/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loops-crafted-1/theatreSquare.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 05:14:12,574 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 05:14:12,632 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 05:14:12,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 05:14:12,636 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 05:14:12,662 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 05:14:12,663 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 05:14:12,663 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 05:14:12,663 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 05:14:12,666 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 05:14:12,666 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 05:14:12,667 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 05:14:12,667 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 05:14:12,668 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 05:14:12,668 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 05:14:12,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 05:14:12,669 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 05:14:12,669 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 05:14:12,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 05:14:12,670 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 05:14:12,670 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 05:14:12,670 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 05:14:12,671 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 05:14:12,671 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 05:14:12,671 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 05:14:12,671 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 05:14:12,671 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 05:14:12,671 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 05:14:12,672 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 05:14:12,672 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 05:14:12,673 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 05:14:12,673 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 05:14:12,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 05:14:12,673 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 05:14:12,673 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 05:14:12,673 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 05:14:12,674 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 05:14:12,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 05:14:12,674 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 05:14:12,674 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 05:14:12,674 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 05:14:12,674 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 05:14:12,674 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 05:14:12,675 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 05:14:12,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 05:14:12,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 05:14:12,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 05:14:12,870 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 05:14:12,870 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 05:14:12,871 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/theatreSquare.c [2023-12-21 05:14:13,897 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 05:14:14,011 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 05:14:14,012 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/theatreSquare.c [2023-12-21 05:14:14,017 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25bc8485b/e3faa146b9884a68957fb41a3998896a/FLAG98dc5cbc4 [2023-12-21 05:14:14,026 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25bc8485b/e3faa146b9884a68957fb41a3998896a [2023-12-21 05:14:14,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 05:14:14,036 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 05:14:14,037 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 05:14:14,037 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 05:14:14,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 05:14:14,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:14:14" (1/1) ... [2023-12-21 05:14:14,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c0f0875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:14:14, skipping insertion in model container [2023-12-21 05:14:14,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:14:14" (1/1) ... [2023-12-21 05:14:14,059 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 05:14:14,164 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/theatreSquare.c[370,383] [2023-12-21 05:14:14,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 05:14:14,187 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 05:14:14,195 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/theatreSquare.c[370,383] [2023-12-21 05:14:14,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 05:14:14,213 INFO L206 MainTranslator]: Completed translation [2023-12-21 05:14:14,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:14:14 WrapperNode [2023-12-21 05:14:14,214 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 05:14:14,215 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 05:14:14,215 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 05:14:14,215 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 05:14:14,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:14:14" (1/1) ... [2023-12-21 05:14:14,225 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:14:14" (1/1) ... [2023-12-21 05:14:14,242 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 103 [2023-12-21 05:14:14,242 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 05:14:14,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 05:14:14,242 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 05:14:14,243 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 05:14:14,249 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:14:14" (1/1) ... [2023-12-21 05:14:14,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:14:14" (1/1) ... [2023-12-21 05:14:14,250 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:14:14" (1/1) ... [2023-12-21 05:14:14,270 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 05:14:14,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:14:14" (1/1) ... [2023-12-21 05:14:14,271 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:14:14" (1/1) ... [2023-12-21 05:14:14,273 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:14:14" (1/1) ... [2023-12-21 05:14:14,276 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:14:14" (1/1) ... [2023-12-21 05:14:14,276 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:14:14" (1/1) ... [2023-12-21 05:14:14,277 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:14:14" (1/1) ... [2023-12-21 05:14:14,278 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 05:14:14,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 05:14:14,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 05:14:14,279 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 05:14:14,279 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:14:14" (1/1) ... [2023-12-21 05:14:14,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 05:14:14,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:14,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 05:14:14,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 05:14:14,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 05:14:14,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 05:14:14,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 05:14:14,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 05:14:14,375 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 05:14:14,377 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 05:14:14,507 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 05:14:14,527 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 05:14:14,527 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-21 05:14:14,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:14:14 BoogieIcfgContainer [2023-12-21 05:14:14,527 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 05:14:14,530 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 05:14:14,530 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 05:14:14,532 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 05:14:14,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 05:14:14" (1/3) ... [2023-12-21 05:14:14,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c0d127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:14:14, skipping insertion in model container [2023-12-21 05:14:14,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:14:14" (2/3) ... [2023-12-21 05:14:14,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c0d127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:14:14, skipping insertion in model container [2023-12-21 05:14:14,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:14:14" (3/3) ... [2023-12-21 05:14:14,535 INFO L112 eAbstractionObserver]: Analyzing ICFG theatreSquare.c [2023-12-21 05:14:14,546 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 05:14:14,547 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 05:14:14,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 05:14:14,579 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@59b53789, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 05:14:14,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 05:14:14,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.9375) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:14,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-21 05:14:14,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:14,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-21 05:14:14,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:14,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:14,589 INFO L85 PathProgramCache]: Analyzing trace with hash 126370538, now seen corresponding path program 1 times [2023-12-21 05:14:14,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:14,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064265690] [2023-12-21 05:14:14,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:14,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:14,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:14:14,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:14,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064265690] [2023-12-21 05:14:14,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064265690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:14:14,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:14:14,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 05:14:14,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422159938] [2023-12-21 05:14:14,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:14:14,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 05:14:14,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:14,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 05:14:14,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 05:14:14,871 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.9375) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:14,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:14,910 INFO L93 Difference]: Finished difference Result 36 states and 60 transitions. [2023-12-21 05:14:14,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 05:14:14,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-21 05:14:14,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:14,916 INFO L225 Difference]: With dead ends: 36 [2023-12-21 05:14:14,916 INFO L226 Difference]: Without dead ends: 16 [2023-12-21 05:14:14,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 05:14:14,925 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:14,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 45 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:14,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-21 05:14:14,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-21 05:14:14,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:14,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2023-12-21 05:14:14,953 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 5 [2023-12-21 05:14:14,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:14,953 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2023-12-21 05:14:14,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:14,953 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2023-12-21 05:14:14,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-21 05:14:14,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:14,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:14,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 05:14:14,954 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:14,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:14,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1401987001, now seen corresponding path program 1 times [2023-12-21 05:14:14,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:14,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370529312] [2023-12-21 05:14:14,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:14,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:15,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:14:15,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:15,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370529312] [2023-12-21 05:14:15,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370529312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:14:15,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:14:15,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 05:14:15,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995897028] [2023-12-21 05:14:15,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:14:15,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 05:14:15,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:15,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 05:14:15,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 05:14:15,118 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:15,184 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2023-12-21 05:14:15,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 05:14:15,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-21 05:14:15,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:15,185 INFO L225 Difference]: With dead ends: 33 [2023-12-21 05:14:15,185 INFO L226 Difference]: Without dead ends: 28 [2023-12-21 05:14:15,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-21 05:14:15,186 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:15,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 80 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:15,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-21 05:14:15,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2023-12-21 05:14:15,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2023-12-21 05:14:15,190 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 15 [2023-12-21 05:14:15,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:15,190 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2023-12-21 05:14:15,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,191 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2023-12-21 05:14:15,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-21 05:14:15,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:15,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:15,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 05:14:15,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:15,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:15,192 INFO L85 PathProgramCache]: Analyzing trace with hash 541116398, now seen corresponding path program 1 times [2023-12-21 05:14:15,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:15,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133721039] [2023-12-21 05:14:15,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:15,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:14:15,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:15,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133721039] [2023-12-21 05:14:15,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133721039] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:14:15,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:14:15,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 05:14:15,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717843098] [2023-12-21 05:14:15,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:14:15,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 05:14:15,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:15,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 05:14:15,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 05:14:15,234 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:15,251 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2023-12-21 05:14:15,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 05:14:15,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-21 05:14:15,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:15,252 INFO L225 Difference]: With dead ends: 37 [2023-12-21 05:14:15,252 INFO L226 Difference]: Without dead ends: 28 [2023-12-21 05:14:15,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 05:14:15,253 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:15,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 34 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:15,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-21 05:14:15,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2023-12-21 05:14:15,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2023-12-21 05:14:15,258 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 16 [2023-12-21 05:14:15,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:15,259 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2023-12-21 05:14:15,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,259 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2023-12-21 05:14:15,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-21 05:14:15,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:15,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:15,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 05:14:15,260 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:15,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:15,260 INFO L85 PathProgramCache]: Analyzing trace with hash -180343911, now seen corresponding path program 1 times [2023-12-21 05:14:15,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:15,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973847744] [2023-12-21 05:14:15,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:15,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:15,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:14:15,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:15,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973847744] [2023-12-21 05:14:15,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973847744] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:14:15,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:14:15,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 05:14:15,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223316247] [2023-12-21 05:14:15,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:14:15,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 05:14:15,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:15,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 05:14:15,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 05:14:15,295 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:15,313 INFO L93 Difference]: Finished difference Result 47 states and 65 transitions. [2023-12-21 05:14:15,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 05:14:15,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-21 05:14:15,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:15,315 INFO L225 Difference]: With dead ends: 47 [2023-12-21 05:14:15,315 INFO L226 Difference]: Without dead ends: 32 [2023-12-21 05:14:15,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 05:14:15,316 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:15,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 43 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:15,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-21 05:14:15,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2023-12-21 05:14:15,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 30 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 43 transitions. [2023-12-21 05:14:15,321 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 43 transitions. Word has length 16 [2023-12-21 05:14:15,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:15,321 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 43 transitions. [2023-12-21 05:14:15,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,321 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2023-12-21 05:14:15,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 05:14:15,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:15,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:15,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 05:14:15,322 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:15,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:15,322 INFO L85 PathProgramCache]: Analyzing trace with hash 668508425, now seen corresponding path program 1 times [2023-12-21 05:14:15,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:15,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37813002] [2023-12-21 05:14:15,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:15,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:15,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:15,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37813002] [2023-12-21 05:14:15,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37813002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:14:15,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:14:15,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 05:14:15,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208861405] [2023-12-21 05:14:15,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:14:15,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 05:14:15,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:15,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 05:14:15,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 05:14:15,357 INFO L87 Difference]: Start difference. First operand 31 states and 43 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:15,367 INFO L93 Difference]: Finished difference Result 58 states and 80 transitions. [2023-12-21 05:14:15,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 05:14:15,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-21 05:14:15,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:15,368 INFO L225 Difference]: With dead ends: 58 [2023-12-21 05:14:15,368 INFO L226 Difference]: Without dead ends: 33 [2023-12-21 05:14:15,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 05:14:15,369 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:15,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 30 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:15,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-21 05:14:15,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-12-21 05:14:15,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.40625) internal successors, (45), 32 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2023-12-21 05:14:15,374 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 17 [2023-12-21 05:14:15,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:15,374 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 45 transitions. [2023-12-21 05:14:15,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,375 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2023-12-21 05:14:15,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 05:14:15,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:15,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:15,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 05:14:15,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:15,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:15,376 INFO L85 PathProgramCache]: Analyzing trace with hash 566072616, now seen corresponding path program 1 times [2023-12-21 05:14:15,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:15,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913512315] [2023-12-21 05:14:15,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:15,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:15,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 05:14:15,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:15,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913512315] [2023-12-21 05:14:15,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913512315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:14:15,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:14:15,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 05:14:15,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665743154] [2023-12-21 05:14:15,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:14:15,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 05:14:15,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:15,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 05:14:15,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 05:14:15,408 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:15,417 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2023-12-21 05:14:15,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 05:14:15,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-21 05:14:15,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:15,418 INFO L225 Difference]: With dead ends: 45 [2023-12-21 05:14:15,418 INFO L226 Difference]: Without dead ends: 29 [2023-12-21 05:14:15,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 05:14:15,419 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:15,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:15,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-21 05:14:15,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-21 05:14:15,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2023-12-21 05:14:15,423 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 18 [2023-12-21 05:14:15,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:15,423 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2023-12-21 05:14:15,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,423 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2023-12-21 05:14:15,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 05:14:15,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:15,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:15,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 05:14:15,424 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:15,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:15,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1647246806, now seen corresponding path program 1 times [2023-12-21 05:14:15,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:15,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948212215] [2023-12-21 05:14:15,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:15,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:15,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 05:14:15,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:15,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948212215] [2023-12-21 05:14:15,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948212215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:14:15,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:14:15,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 05:14:15,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536764154] [2023-12-21 05:14:15,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:14:15,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 05:14:15,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:15,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 05:14:15,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 05:14:15,504 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:15,534 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2023-12-21 05:14:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 05:14:15,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-21 05:14:15,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:15,535 INFO L225 Difference]: With dead ends: 43 [2023-12-21 05:14:15,535 INFO L226 Difference]: Without dead ends: 32 [2023-12-21 05:14:15,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 05:14:15,536 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 14 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:15,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 31 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:15,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-21 05:14:15,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-21 05:14:15,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2023-12-21 05:14:15,541 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 18 [2023-12-21 05:14:15,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:15,541 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2023-12-21 05:14:15,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,541 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2023-12-21 05:14:15,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-21 05:14:15,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:15,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:15,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 05:14:15,542 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:15,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:15,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1592914882, now seen corresponding path program 1 times [2023-12-21 05:14:15,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:15,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967577126] [2023-12-21 05:14:15,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:15,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:15,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:15,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:15,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967577126] [2023-12-21 05:14:15,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967577126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:14:15,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:14:15,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 05:14:15,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339106250] [2023-12-21 05:14:15,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:14:15,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 05:14:15,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:15,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 05:14:15,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 05:14:15,610 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:15,635 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2023-12-21 05:14:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 05:14:15,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-21 05:14:15,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:15,637 INFO L225 Difference]: With dead ends: 37 [2023-12-21 05:14:15,637 INFO L226 Difference]: Without dead ends: 28 [2023-12-21 05:14:15,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 05:14:15,639 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:15,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 33 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:15,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-21 05:14:15,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-21 05:14:15,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2023-12-21 05:14:15,652 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 19 [2023-12-21 05:14:15,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:15,652 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2023-12-21 05:14:15,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,652 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2023-12-21 05:14:15,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 05:14:15,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:15,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:15,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 05:14:15,653 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:15,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:15,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2044207726, now seen corresponding path program 1 times [2023-12-21 05:14:15,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:15,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324772127] [2023-12-21 05:14:15,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:15,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:15,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:15,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:15,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324772127] [2023-12-21 05:14:15,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324772127] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:15,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303975993] [2023-12-21 05:14:15,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:15,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:15,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:15,718 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:15,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 05:14:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:15,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 05:14:15,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:15,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:15,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 05:14:15,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303975993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:14:15,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 05:14:15,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-12-21 05:14:15,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034733832] [2023-12-21 05:14:15,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:14:15,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 05:14:15,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:15,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 05:14:15,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 05:14:15,855 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:15,872 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-12-21 05:14:15,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 05:14:15,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-21 05:14:15,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:15,873 INFO L225 Difference]: With dead ends: 34 [2023-12-21 05:14:15,873 INFO L226 Difference]: Without dead ends: 21 [2023-12-21 05:14:15,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 05:14:15,875 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:15,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:15,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-21 05:14:15,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-21 05:14:15,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2023-12-21 05:14:15,882 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 20 [2023-12-21 05:14:15,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:15,882 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2023-12-21 05:14:15,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:15,882 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2023-12-21 05:14:15,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 05:14:15,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:15,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:15,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 05:14:16,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:16,088 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:16,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:16,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1720419291, now seen corresponding path program 1 times [2023-12-21 05:14:16,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:16,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755993471] [2023-12-21 05:14:16,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:16,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:16,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:16,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755993471] [2023-12-21 05:14:16,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755993471] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:16,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064389327] [2023-12-21 05:14:16,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:16,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:16,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:16,150 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:16,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 05:14:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:16,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 05:14:16,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:16,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 05:14:16,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064389327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:14:16,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 05:14:16,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-12-21 05:14:16,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177486919] [2023-12-21 05:14:16,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:14:16,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 05:14:16,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:16,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 05:14:16,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 05:14:16,224 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:16,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:16,245 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2023-12-21 05:14:16,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 05:14:16,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-21 05:14:16,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:16,247 INFO L225 Difference]: With dead ends: 27 [2023-12-21 05:14:16,247 INFO L226 Difference]: Without dead ends: 22 [2023-12-21 05:14:16,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 05:14:16,248 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:16,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 51 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:16,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-21 05:14:16,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-21 05:14:16,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:16,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2023-12-21 05:14:16,252 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 20 [2023-12-21 05:14:16,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:16,252 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2023-12-21 05:14:16,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:16,252 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2023-12-21 05:14:16,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-21 05:14:16,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:16,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:16,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:16,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-21 05:14:16,461 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:16,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:16,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1822582796, now seen corresponding path program 1 times [2023-12-21 05:14:16,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:16,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509226377] [2023-12-21 05:14:16,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:16,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:16,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:16,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:16,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509226377] [2023-12-21 05:14:16,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509226377] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:16,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970970328] [2023-12-21 05:14:16,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:16,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:16,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:16,702 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:16,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 05:14:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:16,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 05:14:16,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:16,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:16,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970970328] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:16,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:16,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2023-12-21 05:14:16,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877229801] [2023-12-21 05:14:16,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:16,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 05:14:16,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:16,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 05:14:16,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-12-21 05:14:16,936 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:17,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:17,067 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2023-12-21 05:14:17,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 05:14:17,067 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-21 05:14:17,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:17,067 INFO L225 Difference]: With dead ends: 43 [2023-12-21 05:14:17,067 INFO L226 Difference]: Without dead ends: 38 [2023-12-21 05:14:17,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2023-12-21 05:14:17,068 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 28 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:17,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 172 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:17,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-21 05:14:17,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2023-12-21 05:14:17,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:17,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2023-12-21 05:14:17,072 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 21 [2023-12-21 05:14:17,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:17,072 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2023-12-21 05:14:17,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:17,072 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2023-12-21 05:14:17,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 05:14:17,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:17,073 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:17,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:17,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:17,278 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:17,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:17,278 INFO L85 PathProgramCache]: Analyzing trace with hash 110216570, now seen corresponding path program 2 times [2023-12-21 05:14:17,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:17,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283053610] [2023-12-21 05:14:17,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:17,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:17,353 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:17,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:17,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283053610] [2023-12-21 05:14:17,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283053610] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:17,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536702259] [2023-12-21 05:14:17,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:14:17,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:17,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:17,369 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:17,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 05:14:17,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:14:17,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:17,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 05:14:17,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:17,469 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:17,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:17,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536702259] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:17,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:17,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-12-21 05:14:17,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529496529] [2023-12-21 05:14:17,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:17,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 05:14:17,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:17,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 05:14:17,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-21 05:14:17,526 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:17,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:17,584 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2023-12-21 05:14:17,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 05:14:17,584 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-21 05:14:17,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:17,584 INFO L225 Difference]: With dead ends: 56 [2023-12-21 05:14:17,584 INFO L226 Difference]: Without dead ends: 47 [2023-12-21 05:14:17,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2023-12-21 05:14:17,585 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 57 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:17,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 97 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:17,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-21 05:14:17,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2023-12-21 05:14:17,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:17,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2023-12-21 05:14:17,590 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 22 [2023-12-21 05:14:17,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:17,590 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2023-12-21 05:14:17,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:17,590 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2023-12-21 05:14:17,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 05:14:17,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:17,590 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:17,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:17,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:17,795 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:17,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:17,796 INFO L85 PathProgramCache]: Analyzing trace with hash 694684155, now seen corresponding path program 3 times [2023-12-21 05:14:17,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:17,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272594903] [2023-12-21 05:14:17,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:17,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:17,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:17,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272594903] [2023-12-21 05:14:17,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272594903] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:17,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635674008] [2023-12-21 05:14:17,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:14:17,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:17,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:17,831 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:17,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 05:14:17,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 05:14:17,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:17,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 05:14:17,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:17,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:17,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635674008] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:17,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:17,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-21 05:14:17,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057134913] [2023-12-21 05:14:17,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:17,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 05:14:17,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:17,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 05:14:17,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-21 05:14:17,940 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:17,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:17,963 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2023-12-21 05:14:17,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 05:14:17,964 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-21 05:14:17,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:17,964 INFO L225 Difference]: With dead ends: 61 [2023-12-21 05:14:17,964 INFO L226 Difference]: Without dead ends: 50 [2023-12-21 05:14:17,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-21 05:14:17,965 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:17,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 72 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:17,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-21 05:14:17,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2023-12-21 05:14:17,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2023-12-21 05:14:17,972 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 22 [2023-12-21 05:14:17,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:17,972 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2023-12-21 05:14:17,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2023-12-21 05:14:17,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 05:14:17,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:17,973 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:17,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:18,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-21 05:14:18,178 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:18,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:18,178 INFO L85 PathProgramCache]: Analyzing trace with hash -752822738, now seen corresponding path program 4 times [2023-12-21 05:14:18,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:18,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355359869] [2023-12-21 05:14:18,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:18,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:18,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:18,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355359869] [2023-12-21 05:14:18,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355359869] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:18,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854822516] [2023-12-21 05:14:18,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:14:18,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:18,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:18,253 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:18,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 05:14:18,308 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:14:18,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:18,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 05:14:18,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:18,345 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:18,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:18,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:18,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854822516] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:18,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:18,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-21 05:14:18,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376316585] [2023-12-21 05:14:18,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:18,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 05:14:18,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:18,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 05:14:18,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-21 05:14:18,369 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:18,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:18,395 INFO L93 Difference]: Finished difference Result 90 states and 116 transitions. [2023-12-21 05:14:18,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 05:14:18,396 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-21 05:14:18,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:18,397 INFO L225 Difference]: With dead ends: 90 [2023-12-21 05:14:18,397 INFO L226 Difference]: Without dead ends: 61 [2023-12-21 05:14:18,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-21 05:14:18,398 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:18,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 69 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:18,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-21 05:14:18,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2023-12-21 05:14:18,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.293103448275862) internal successors, (75), 58 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:18,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2023-12-21 05:14:18,410 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 22 [2023-12-21 05:14:18,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:18,410 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2023-12-21 05:14:18,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:18,411 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2023-12-21 05:14:18,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 05:14:18,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:18,412 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:18,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:18,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:18,619 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:18,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:18,620 INFO L85 PathProgramCache]: Analyzing trace with hash 38970029, now seen corresponding path program 5 times [2023-12-21 05:14:18,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:18,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101083232] [2023-12-21 05:14:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:18,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:18,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:18,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101083232] [2023-12-21 05:14:18,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101083232] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:18,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261248310] [2023-12-21 05:14:18,695 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:14:18,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:18,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:18,714 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:18,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 05:14:18,767 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:14:18,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:18,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 05:14:18,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:18,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:18,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261248310] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:18,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:18,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-12-21 05:14:18,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007836359] [2023-12-21 05:14:18,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:18,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 05:14:18,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:18,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 05:14:18,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-21 05:14:18,882 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:18,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:18,945 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2023-12-21 05:14:18,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 05:14:18,946 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-21 05:14:18,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:18,946 INFO L225 Difference]: With dead ends: 83 [2023-12-21 05:14:18,946 INFO L226 Difference]: Without dead ends: 72 [2023-12-21 05:14:18,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-12-21 05:14:18,947 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 54 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:18,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 157 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:18,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-21 05:14:18,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 61. [2023-12-21 05:14:18,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 60 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:18,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2023-12-21 05:14:18,954 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 22 [2023-12-21 05:14:18,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:18,954 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2023-12-21 05:14:18,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:18,954 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2023-12-21 05:14:18,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 05:14:18,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:18,954 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:18,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:19,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:19,159 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:19,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:19,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1294635326, now seen corresponding path program 6 times [2023-12-21 05:14:19,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:19,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578214333] [2023-12-21 05:14:19,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:19,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 05:14:19,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:19,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578214333] [2023-12-21 05:14:19,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578214333] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:19,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076421608] [2023-12-21 05:14:19,246 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:14:19,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:19,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:19,247 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:19,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 05:14:19,286 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-12-21 05:14:19,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:19,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 05:14:19,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:14:19,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:14:19,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076421608] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:19,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:19,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2023-12-21 05:14:19,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788165768] [2023-12-21 05:14:19,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:19,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 05:14:19,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:19,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 05:14:19,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-21 05:14:19,401 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:19,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:19,495 INFO L93 Difference]: Finished difference Result 95 states and 115 transitions. [2023-12-21 05:14:19,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 05:14:19,495 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-21 05:14:19,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:19,496 INFO L225 Difference]: With dead ends: 95 [2023-12-21 05:14:19,496 INFO L226 Difference]: Without dead ends: 72 [2023-12-21 05:14:19,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-12-21 05:14:19,496 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 63 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:19,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 114 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:19,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-21 05:14:19,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 61. [2023-12-21 05:14:19,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 60 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:19,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2023-12-21 05:14:19,503 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 23 [2023-12-21 05:14:19,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:19,503 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2023-12-21 05:14:19,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:19,503 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2023-12-21 05:14:19,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 05:14:19,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:19,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:19,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:19,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-21 05:14:19,708 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:19,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:19,709 INFO L85 PathProgramCache]: Analyzing trace with hash 652795641, now seen corresponding path program 7 times [2023-12-21 05:14:19,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:19,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637301180] [2023-12-21 05:14:19,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:19,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:19,858 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:19,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:19,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637301180] [2023-12-21 05:14:19,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637301180] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:19,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482181914] [2023-12-21 05:14:19,859 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:14:19,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:19,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:19,860 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:19,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 05:14:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:19,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-21 05:14:19,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:19,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:20,121 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:20,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482181914] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:20,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:20,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2023-12-21 05:14:20,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790273445] [2023-12-21 05:14:20,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:20,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 05:14:20,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:20,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 05:14:20,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2023-12-21 05:14:20,122 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:20,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:20,360 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2023-12-21 05:14:20,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 05:14:20,360 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-21 05:14:20,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:20,361 INFO L225 Difference]: With dead ends: 97 [2023-12-21 05:14:20,361 INFO L226 Difference]: Without dead ends: 89 [2023-12-21 05:14:20,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2023-12-21 05:14:20,362 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 39 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:20,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 229 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:20,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-21 05:14:20,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2023-12-21 05:14:20,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.2784810126582278) internal successors, (101), 79 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:20,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2023-12-21 05:14:20,372 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 23 [2023-12-21 05:14:20,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:20,372 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2023-12-21 05:14:20,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:20,372 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2023-12-21 05:14:20,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 05:14:20,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:20,372 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:20,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:20,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-21 05:14:20,577 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:20,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:20,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1360307614, now seen corresponding path program 8 times [2023-12-21 05:14:20,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:20,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387144503] [2023-12-21 05:14:20,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:20,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:20,650 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 05:14:20,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:20,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387144503] [2023-12-21 05:14:20,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387144503] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:20,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266159098] [2023-12-21 05:14:20,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:14:20,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:20,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:20,651 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:20,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 05:14:20,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:14:20,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:20,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 05:14:20,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:20,750 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:14:20,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:20,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:14:20,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266159098] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:20,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:20,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2023-12-21 05:14:20,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819473452] [2023-12-21 05:14:20,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:20,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 05:14:20,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:20,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 05:14:20,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-21 05:14:20,822 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:20,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:20,919 INFO L93 Difference]: Finished difference Result 97 states and 117 transitions. [2023-12-21 05:14:20,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 05:14:20,920 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-21 05:14:20,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:20,920 INFO L225 Difference]: With dead ends: 97 [2023-12-21 05:14:20,920 INFO L226 Difference]: Without dead ends: 83 [2023-12-21 05:14:20,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-12-21 05:14:20,921 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 49 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:20,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 180 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:20,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-21 05:14:20,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2023-12-21 05:14:20,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.2467532467532467) internal successors, (96), 77 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:20,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2023-12-21 05:14:20,929 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 96 transitions. Word has length 23 [2023-12-21 05:14:20,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:20,929 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 96 transitions. [2023-12-21 05:14:20,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:20,929 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 96 transitions. [2023-12-21 05:14:20,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 05:14:20,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:20,930 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:20,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:21,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 05:14:21,130 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:21,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:21,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1793446867, now seen corresponding path program 9 times [2023-12-21 05:14:21,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:21,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295956771] [2023-12-21 05:14:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:21,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:21,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:21,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295956771] [2023-12-21 05:14:21,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295956771] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:21,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122344460] [2023-12-21 05:14:21,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:14:21,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:21,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:21,258 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:21,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 05:14:21,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 05:14:21,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:21,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 05:14:21,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:21,431 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:21,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:21,536 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:21,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122344460] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:21,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:21,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-12-21 05:14:21,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788849228] [2023-12-21 05:14:21,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:21,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 05:14:21,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:21,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 05:14:21,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-12-21 05:14:21,538 INFO L87 Difference]: Start difference. First operand 78 states and 96 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:21,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:21,722 INFO L93 Difference]: Finished difference Result 115 states and 139 transitions. [2023-12-21 05:14:21,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 05:14:21,723 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-21 05:14:21,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:21,723 INFO L225 Difference]: With dead ends: 115 [2023-12-21 05:14:21,723 INFO L226 Difference]: Without dead ends: 93 [2023-12-21 05:14:21,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2023-12-21 05:14:21,724 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 92 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:21,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 247 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:21,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-21 05:14:21,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 75. [2023-12-21 05:14:21,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.2567567567567568) internal successors, (93), 74 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:21,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 93 transitions. [2023-12-21 05:14:21,737 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 93 transitions. Word has length 24 [2023-12-21 05:14:21,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:21,737 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 93 transitions. [2023-12-21 05:14:21,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:21,737 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 93 transitions. [2023-12-21 05:14:21,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 05:14:21,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:21,738 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:21,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:21,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:21,943 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:21,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:21,943 INFO L85 PathProgramCache]: Analyzing trace with hash 292877658, now seen corresponding path program 10 times [2023-12-21 05:14:21,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:21,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592990925] [2023-12-21 05:14:21,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:21,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:22,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:22,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592990925] [2023-12-21 05:14:22,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592990925] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:22,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628641225] [2023-12-21 05:14:22,093 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:14:22,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:22,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:22,094 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:22,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 05:14:22,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:14:22,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:22,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 05:14:22,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:22,277 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:22,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:22,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628641225] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:22,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:22,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-12-21 05:14:22,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812047396] [2023-12-21 05:14:22,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:22,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 05:14:22,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:22,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 05:14:22,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-21 05:14:22,401 INFO L87 Difference]: Start difference. First operand 75 states and 93 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:22,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:22,643 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2023-12-21 05:14:22,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 05:14:22,645 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-21 05:14:22,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:22,645 INFO L225 Difference]: With dead ends: 96 [2023-12-21 05:14:22,645 INFO L226 Difference]: Without dead ends: 85 [2023-12-21 05:14:22,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2023-12-21 05:14:22,646 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 84 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:22,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 272 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:22,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-21 05:14:22,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2023-12-21 05:14:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.25) internal successors, (95), 76 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2023-12-21 05:14:22,658 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 24 [2023-12-21 05:14:22,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:22,658 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2023-12-21 05:14:22,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:22,658 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2023-12-21 05:14:22,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 05:14:22,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:22,659 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:22,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:22,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:22,864 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:22,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:22,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1917800498, now seen corresponding path program 11 times [2023-12-21 05:14:22,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:22,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172435263] [2023-12-21 05:14:22,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:22,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 05:14:22,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:22,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172435263] [2023-12-21 05:14:22,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172435263] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:22,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186859460] [2023-12-21 05:14:22,902 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:14:22,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:22,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:22,916 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:22,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 05:14:22,956 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:14:22,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:22,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 05:14:22,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 05:14:22,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:23,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 05:14:23,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186859460] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:23,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:23,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-12-21 05:14:23,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013343525] [2023-12-21 05:14:23,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:23,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 05:14:23,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:23,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 05:14:23,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-21 05:14:23,027 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:23,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:23,085 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2023-12-21 05:14:23,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 05:14:23,086 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-21 05:14:23,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:23,086 INFO L225 Difference]: With dead ends: 94 [2023-12-21 05:14:23,086 INFO L226 Difference]: Without dead ends: 65 [2023-12-21 05:14:23,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-12-21 05:14:23,087 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:23,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:23,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-21 05:14:23,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-12-21 05:14:23,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.234375) internal successors, (79), 64 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:23,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2023-12-21 05:14:23,097 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 24 [2023-12-21 05:14:23,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:23,097 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2023-12-21 05:14:23,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:23,097 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2023-12-21 05:14:23,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 05:14:23,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:23,097 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:23,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:23,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-21 05:14:23,302 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:23,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:23,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1920327959, now seen corresponding path program 12 times [2023-12-21 05:14:23,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:23,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456151884] [2023-12-21 05:14:23,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:23,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 05:14:23,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:23,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456151884] [2023-12-21 05:14:23,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456151884] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:23,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212250184] [2023-12-21 05:14:23,357 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:14:23,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:23,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:23,358 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:23,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 05:14:23,399 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-12-21 05:14:23,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:23,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 05:14:23,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 05:14:23,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:23,458 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 05:14:23,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212250184] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:23,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:23,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-12-21 05:14:23,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502094893] [2023-12-21 05:14:23,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:23,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 05:14:23,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:23,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 05:14:23,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-21 05:14:23,459 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:23,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:23,499 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2023-12-21 05:14:23,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 05:14:23,500 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-21 05:14:23,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:23,501 INFO L225 Difference]: With dead ends: 72 [2023-12-21 05:14:23,501 INFO L226 Difference]: Without dead ends: 67 [2023-12-21 05:14:23,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-12-21 05:14:23,501 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:23,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 103 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:23,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-12-21 05:14:23,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2023-12-21 05:14:23,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 65 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:23,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2023-12-21 05:14:23,516 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 24 [2023-12-21 05:14:23,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:23,516 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2023-12-21 05:14:23,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:23,516 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2023-12-21 05:14:23,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 05:14:23,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:23,517 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:23,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:23,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:23,722 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:23,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:23,722 INFO L85 PathProgramCache]: Analyzing trace with hash -66002452, now seen corresponding path program 13 times [2023-12-21 05:14:23,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:23,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367557711] [2023-12-21 05:14:23,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:23,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:23,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:23,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367557711] [2023-12-21 05:14:23,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367557711] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:23,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481457407] [2023-12-21 05:14:23,938 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:14:23,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:23,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:23,939 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:23,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 05:14:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:23,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 05:14:23,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:24,042 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:24,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:24,169 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:24,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481457407] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:24,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:24,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 25 [2023-12-21 05:14:24,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572135226] [2023-12-21 05:14:24,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:24,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 05:14:24,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:24,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 05:14:24,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2023-12-21 05:14:24,171 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 25 states, 25 states have (on average 1.64) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:24,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:24,386 INFO L93 Difference]: Finished difference Result 91 states and 108 transitions. [2023-12-21 05:14:24,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 05:14:24,386 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.64) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-21 05:14:24,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:24,387 INFO L225 Difference]: With dead ends: 91 [2023-12-21 05:14:24,387 INFO L226 Difference]: Without dead ends: 83 [2023-12-21 05:14:24,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 05:14:24,387 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 40 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:24,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 392 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:24,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-21 05:14:24,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 74. [2023-12-21 05:14:24,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 73 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2023-12-21 05:14:24,399 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 25 [2023-12-21 05:14:24,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:24,399 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2023-12-21 05:14:24,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.64) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:24,400 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2023-12-21 05:14:24,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 05:14:24,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:24,400 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:24,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:24,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:24,605 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:24,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:24,605 INFO L85 PathProgramCache]: Analyzing trace with hash -570183088, now seen corresponding path program 14 times [2023-12-21 05:14:24,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:24,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051515796] [2023-12-21 05:14:24,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:24,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:14:24,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:24,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051515796] [2023-12-21 05:14:24,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051515796] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:24,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264163063] [2023-12-21 05:14:24,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:14:24,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:24,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:24,790 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:24,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 05:14:24,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:14:24,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:24,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-21 05:14:24,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:24,910 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:14:24,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:14:25,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264163063] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:25,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:25,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 24 [2023-12-21 05:14:25,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170569263] [2023-12-21 05:14:25,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:25,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 05:14:25,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:25,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 05:14:25,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2023-12-21 05:14:25,019 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:25,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:25,179 INFO L93 Difference]: Finished difference Result 92 states and 110 transitions. [2023-12-21 05:14:25,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 05:14:25,180 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-21 05:14:25,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:25,180 INFO L225 Difference]: With dead ends: 92 [2023-12-21 05:14:25,180 INFO L226 Difference]: Without dead ends: 87 [2023-12-21 05:14:25,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=828, Unknown=0, NotChecked=0, Total=930 [2023-12-21 05:14:25,181 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:25,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 303 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:25,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-21 05:14:25,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2023-12-21 05:14:25,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.2195121951219512) internal successors, (100), 82 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:25,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 100 transitions. [2023-12-21 05:14:25,196 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 100 transitions. Word has length 25 [2023-12-21 05:14:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:25,196 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 100 transitions. [2023-12-21 05:14:25,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:25,196 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 100 transitions. [2023-12-21 05:14:25,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 05:14:25,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:25,197 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:25,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:25,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-21 05:14:25,402 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:25,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:25,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1693616026, now seen corresponding path program 15 times [2023-12-21 05:14:25,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:25,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393859847] [2023-12-21 05:14:25,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:25,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:25,512 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:25,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:25,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393859847] [2023-12-21 05:14:25,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393859847] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:25,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287741787] [2023-12-21 05:14:25,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:14:25,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:25,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:25,514 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:25,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 05:14:25,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 05:14:25,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:25,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 05:14:25,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:25,716 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:25,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:25,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287741787] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:25,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:25,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2023-12-21 05:14:25,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914408418] [2023-12-21 05:14:25,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:25,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 05:14:25,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:25,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 05:14:25,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2023-12-21 05:14:25,849 INFO L87 Difference]: Start difference. First operand 83 states and 100 transitions. Second operand has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:26,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:26,150 INFO L93 Difference]: Finished difference Result 134 states and 159 transitions. [2023-12-21 05:14:26,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 05:14:26,150 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-21 05:14:26,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:26,151 INFO L225 Difference]: With dead ends: 134 [2023-12-21 05:14:26,151 INFO L226 Difference]: Without dead ends: 110 [2023-12-21 05:14:26,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=225, Invalid=1035, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 05:14:26,152 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 134 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:26,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 307 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:26,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-21 05:14:26,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 86. [2023-12-21 05:14:26,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2352941176470589) internal successors, (105), 85 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 105 transitions. [2023-12-21 05:14:26,169 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 105 transitions. Word has length 26 [2023-12-21 05:14:26,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:26,169 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 105 transitions. [2023-12-21 05:14:26,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:26,169 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 105 transitions. [2023-12-21 05:14:26,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 05:14:26,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:26,169 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:26,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:26,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:26,378 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:26,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:26,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1945166861, now seen corresponding path program 16 times [2023-12-21 05:14:26,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:26,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568757837] [2023-12-21 05:14:26,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:26,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:26,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:26,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568757837] [2023-12-21 05:14:26,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568757837] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:26,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680259225] [2023-12-21 05:14:26,517 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:14:26,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:26,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:26,518 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:26,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 05:14:26,570 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:14:26,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:26,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 05:14:26,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:26,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:26,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680259225] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:26,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:26,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2023-12-21 05:14:26,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420904955] [2023-12-21 05:14:26,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:26,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 05:14:26,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:26,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 05:14:26,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2023-12-21 05:14:26,923 INFO L87 Difference]: Start difference. First operand 86 states and 105 transitions. Second operand has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:27,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:27,215 INFO L93 Difference]: Finished difference Result 109 states and 130 transitions. [2023-12-21 05:14:27,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 05:14:27,216 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-21 05:14:27,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:27,216 INFO L225 Difference]: With dead ends: 109 [2023-12-21 05:14:27,217 INFO L226 Difference]: Without dead ends: 97 [2023-12-21 05:14:27,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=909, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 05:14:27,217 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 109 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:27,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 379 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:27,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-21 05:14:27,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2023-12-21 05:14:27,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.2298850574712643) internal successors, (107), 87 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:27,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 107 transitions. [2023-12-21 05:14:27,234 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 107 transitions. Word has length 26 [2023-12-21 05:14:27,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:27,234 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 107 transitions. [2023-12-21 05:14:27,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:27,234 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 107 transitions. [2023-12-21 05:14:27,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 05:14:27,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:27,235 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:27,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:27,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:27,440 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:27,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:27,440 INFO L85 PathProgramCache]: Analyzing trace with hash -466614217, now seen corresponding path program 17 times [2023-12-21 05:14:27,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:27,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821747997] [2023-12-21 05:14:27,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:27,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 05:14:27,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:27,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821747997] [2023-12-21 05:14:27,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821747997] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:27,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437578697] [2023-12-21 05:14:27,489 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:14:27,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:27,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:27,492 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:27,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 05:14:27,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-21 05:14:27,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:27,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 05:14:27,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 05:14:27,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 05:14:27,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437578697] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:27,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:27,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2023-12-21 05:14:27,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253227220] [2023-12-21 05:14:27,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:27,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 05:14:27,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:27,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 05:14:27,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-12-21 05:14:27,610 INFO L87 Difference]: Start difference. First operand 88 states and 107 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:27,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:27,668 INFO L93 Difference]: Finished difference Result 120 states and 146 transitions. [2023-12-21 05:14:27,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 05:14:27,669 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-21 05:14:27,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:27,669 INFO L225 Difference]: With dead ends: 120 [2023-12-21 05:14:27,669 INFO L226 Difference]: Without dead ends: 108 [2023-12-21 05:14:27,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-12-21 05:14:27,671 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:27,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 139 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:27,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-21 05:14:27,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2023-12-21 05:14:27,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.2427184466019416) internal successors, (128), 103 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:27,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2023-12-21 05:14:27,695 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 26 [2023-12-21 05:14:27,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:27,695 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2023-12-21 05:14:27,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:27,696 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2023-12-21 05:14:27,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 05:14:27,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:27,696 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:27,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:27,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:27,901 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:27,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:27,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1743716338, now seen corresponding path program 18 times [2023-12-21 05:14:27,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:27,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859899927] [2023-12-21 05:14:27,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:27,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:27,959 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 05:14:27,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:27,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859899927] [2023-12-21 05:14:27,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859899927] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:27,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207649698] [2023-12-21 05:14:27,960 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:14:27,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:27,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:27,961 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:27,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 05:14:28,020 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-21 05:14:28,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:28,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 05:14:28,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:28,061 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 05:14:28,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 05:14:28,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207649698] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:28,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:28,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2023-12-21 05:14:28,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411673700] [2023-12-21 05:14:28,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:28,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 05:14:28,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:28,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 05:14:28,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-12-21 05:14:28,092 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:28,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:28,150 INFO L93 Difference]: Finished difference Result 185 states and 232 transitions. [2023-12-21 05:14:28,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 05:14:28,150 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-21 05:14:28,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:28,151 INFO L225 Difference]: With dead ends: 185 [2023-12-21 05:14:28,151 INFO L226 Difference]: Without dead ends: 130 [2023-12-21 05:14:28,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-12-21 05:14:28,152 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 14 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:28,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 63 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:28,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-21 05:14:28,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2023-12-21 05:14:28,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.24) internal successors, (155), 125 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:28,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 155 transitions. [2023-12-21 05:14:28,191 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 155 transitions. Word has length 26 [2023-12-21 05:14:28,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:28,191 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 155 transitions. [2023-12-21 05:14:28,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:28,191 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 155 transitions. [2023-12-21 05:14:28,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-21 05:14:28,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:28,191 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:28,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:28,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-21 05:14:28,397 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:28,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:28,397 INFO L85 PathProgramCache]: Analyzing trace with hash -384644711, now seen corresponding path program 19 times [2023-12-21 05:14:28,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:28,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097728912] [2023-12-21 05:14:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:28,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:28,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:28,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097728912] [2023-12-21 05:14:28,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097728912] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:28,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81168764] [2023-12-21 05:14:28,606 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:14:28,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:28,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:28,612 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:28,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-21 05:14:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:28,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-21 05:14:28,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:28,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:28,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81168764] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:28,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:28,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 29 [2023-12-21 05:14:28,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344620837] [2023-12-21 05:14:28,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:28,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 05:14:28,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:28,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 05:14:28,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=741, Unknown=0, NotChecked=0, Total=812 [2023-12-21 05:14:28,863 INFO L87 Difference]: Start difference. First operand 126 states and 155 transitions. Second operand has 29 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:29,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:29,162 INFO L93 Difference]: Finished difference Result 157 states and 190 transitions. [2023-12-21 05:14:29,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 05:14:29,163 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-21 05:14:29,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:29,163 INFO L225 Difference]: With dead ends: 157 [2023-12-21 05:14:29,163 INFO L226 Difference]: Without dead ends: 149 [2023-12-21 05:14:29,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=1290, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 05:14:29,164 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 50 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:29,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 531 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:14:29,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-21 05:14:29,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 134. [2023-12-21 05:14:29,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.2330827067669172) internal successors, (164), 133 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 164 transitions. [2023-12-21 05:14:29,190 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 164 transitions. Word has length 27 [2023-12-21 05:14:29,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:29,190 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 164 transitions. [2023-12-21 05:14:29,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:29,190 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 164 transitions. [2023-12-21 05:14:29,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-21 05:14:29,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:29,191 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:29,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:29,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-21 05:14:29,395 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:29,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:29,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1446506014, now seen corresponding path program 20 times [2023-12-21 05:14:29,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:29,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897764355] [2023-12-21 05:14:29,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:29,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:29,494 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 05:14:29,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:29,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897764355] [2023-12-21 05:14:29,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897764355] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:29,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111144581] [2023-12-21 05:14:29,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:14:29,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:29,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:29,496 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:29,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-21 05:14:29,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:14:29,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:29,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 05:14:29,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:29,670 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 05:14:29,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 05:14:29,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111144581] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:29,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:29,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2023-12-21 05:14:29,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215364490] [2023-12-21 05:14:29,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:29,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 05:14:29,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:29,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 05:14:29,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2023-12-21 05:14:29,763 INFO L87 Difference]: Start difference. First operand 134 states and 164 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:29,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:29,994 INFO L93 Difference]: Finished difference Result 197 states and 235 transitions. [2023-12-21 05:14:29,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 05:14:29,995 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-21 05:14:29,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:29,995 INFO L225 Difference]: With dead ends: 197 [2023-12-21 05:14:29,995 INFO L226 Difference]: Without dead ends: 163 [2023-12-21 05:14:29,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2023-12-21 05:14:29,997 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 138 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:29,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 190 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:29,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-21 05:14:30,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 142. [2023-12-21 05:14:30,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.2127659574468086) internal successors, (171), 141 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 171 transitions. [2023-12-21 05:14:30,030 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 171 transitions. Word has length 27 [2023-12-21 05:14:30,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:30,030 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 171 transitions. [2023-12-21 05:14:30,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:30,030 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 171 transitions. [2023-12-21 05:14:30,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-21 05:14:30,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:30,030 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:30,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:30,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:30,235 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:30,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:30,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1539073127, now seen corresponding path program 21 times [2023-12-21 05:14:30,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:30,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935111982] [2023-12-21 05:14:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:30,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:14:30,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:30,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935111982] [2023-12-21 05:14:30,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935111982] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:30,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051662080] [2023-12-21 05:14:30,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:14:30,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:30,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:30,391 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:30,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-21 05:14:30,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 05:14:30,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:30,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 05:14:30,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:30,587 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:14:30,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:14:30,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051662080] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:30,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:30,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 27 [2023-12-21 05:14:30,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168788442] [2023-12-21 05:14:30,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:30,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-21 05:14:30,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:30,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-21 05:14:30,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2023-12-21 05:14:30,655 INFO L87 Difference]: Start difference. First operand 142 states and 171 transitions. Second operand has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:30,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:30,875 INFO L93 Difference]: Finished difference Result 169 states and 202 transitions. [2023-12-21 05:14:30,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 05:14:30,876 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-21 05:14:30,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:30,876 INFO L225 Difference]: With dead ends: 169 [2023-12-21 05:14:30,876 INFO L226 Difference]: Without dead ends: 149 [2023-12-21 05:14:30,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 05:14:30,877 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 38 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:30,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 293 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:30,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-21 05:14:30,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 141. [2023-12-21 05:14:30,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.2214285714285715) internal successors, (171), 140 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:30,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 171 transitions. [2023-12-21 05:14:30,908 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 171 transitions. Word has length 27 [2023-12-21 05:14:30,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:30,908 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 171 transitions. [2023-12-21 05:14:30,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:30,908 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 171 transitions. [2023-12-21 05:14:30,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-21 05:14:30,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:30,909 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:30,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:31,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:31,114 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:31,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:31,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1336907646, now seen corresponding path program 22 times [2023-12-21 05:14:31,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:31,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289799611] [2023-12-21 05:14:31,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:31,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:31,214 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 05:14:31,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:31,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289799611] [2023-12-21 05:14:31,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289799611] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:31,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108448873] [2023-12-21 05:14:31,215 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:14:31,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:31,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:31,216 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:31,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-21 05:14:31,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:14:31,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:31,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 05:14:31,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 05:14:31,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 05:14:31,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108448873] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:31,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:31,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2023-12-21 05:14:31,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120592558] [2023-12-21 05:14:31,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:31,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 05:14:31,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:31,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 05:14:31,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2023-12-21 05:14:31,452 INFO L87 Difference]: Start difference. First operand 141 states and 171 transitions. Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:31,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:31,664 INFO L93 Difference]: Finished difference Result 164 states and 193 transitions. [2023-12-21 05:14:31,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 05:14:31,664 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-21 05:14:31,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:31,665 INFO L225 Difference]: With dead ends: 164 [2023-12-21 05:14:31,665 INFO L226 Difference]: Without dead ends: 146 [2023-12-21 05:14:31,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2023-12-21 05:14:31,667 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 93 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:31,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 293 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:31,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-21 05:14:31,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 141. [2023-12-21 05:14:31,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 140 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:31,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 167 transitions. [2023-12-21 05:14:31,712 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 167 transitions. Word has length 27 [2023-12-21 05:14:31,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:31,712 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 167 transitions. [2023-12-21 05:14:31,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:31,713 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 167 transitions. [2023-12-21 05:14:31,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-21 05:14:31,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:31,716 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:31,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:31,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:31,922 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:31,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:31,924 INFO L85 PathProgramCache]: Analyzing trace with hash 405640589, now seen corresponding path program 23 times [2023-12-21 05:14:31,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:31,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262131672] [2023-12-21 05:14:31,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:31,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:32,157 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:32,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:32,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262131672] [2023-12-21 05:14:32,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262131672] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:32,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853301811] [2023-12-21 05:14:32,158 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:14:32,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:32,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:32,159 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:32,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-21 05:14:32,222 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-21 05:14:32,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:32,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 05:14:32,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:32,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:32,606 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:32,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853301811] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:32,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:32,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2023-12-21 05:14:32,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255218834] [2023-12-21 05:14:32,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:32,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 05:14:32,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:32,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 05:14:32,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2023-12-21 05:14:32,607 INFO L87 Difference]: Start difference. First operand 141 states and 167 transitions. Second operand has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 29 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:33,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:33,041 INFO L93 Difference]: Finished difference Result 232 states and 270 transitions. [2023-12-21 05:14:33,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 05:14:33,041 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 29 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-21 05:14:33,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:33,043 INFO L225 Difference]: With dead ends: 232 [2023-12-21 05:14:33,043 INFO L226 Difference]: Without dead ends: 204 [2023-12-21 05:14:33,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=336, Invalid=1644, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 05:14:33,044 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 127 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:33,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 438 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:33,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-21 05:14:33,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 155. [2023-12-21 05:14:33,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.1948051948051948) internal successors, (184), 154 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:33,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2023-12-21 05:14:33,098 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 28 [2023-12-21 05:14:33,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:33,098 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2023-12-21 05:14:33,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 29 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:33,098 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2023-12-21 05:14:33,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-21 05:14:33,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:33,099 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:33,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:33,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-21 05:14:33,304 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:33,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:33,304 INFO L85 PathProgramCache]: Analyzing trace with hash -386218118, now seen corresponding path program 24 times [2023-12-21 05:14:33,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:33,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700627746] [2023-12-21 05:14:33,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:33,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:33,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:33,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700627746] [2023-12-21 05:14:33,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700627746] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:33,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013615338] [2023-12-21 05:14:33,518 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:14:33,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:33,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:33,519 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:33,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-21 05:14:33,567 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-21 05:14:33,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:33,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 05:14:33,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:33,803 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:33,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:33,993 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:33,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013615338] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:33,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:33,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2023-12-21 05:14:33,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100148979] [2023-12-21 05:14:33,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:33,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 05:14:33,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:33,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 05:14:33,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812 [2023-12-21 05:14:33,995 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 29 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:34,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:34,453 INFO L93 Difference]: Finished difference Result 185 states and 217 transitions. [2023-12-21 05:14:34,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 05:14:34,454 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 29 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-21 05:14:34,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:34,454 INFO L225 Difference]: With dead ends: 185 [2023-12-21 05:14:34,454 INFO L226 Difference]: Without dead ends: 171 [2023-12-21 05:14:34,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=1439, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 05:14:34,455 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 115 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:34,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 596 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:14:34,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-21 05:14:34,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 158. [2023-12-21 05:14:34,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.1910828025477707) internal successors, (187), 157 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:34,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 187 transitions. [2023-12-21 05:14:34,526 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 187 transitions. Word has length 28 [2023-12-21 05:14:34,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:34,526 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 187 transitions. [2023-12-21 05:14:34,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 29 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:34,526 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 187 transitions. [2023-12-21 05:14:34,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-21 05:14:34,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:34,527 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:34,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:34,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-21 05:14:34,732 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:34,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:34,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1838398290, now seen corresponding path program 25 times [2023-12-21 05:14:34,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:34,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539108781] [2023-12-21 05:14:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:34,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:34,789 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 05:14:34,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:34,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539108781] [2023-12-21 05:14:34,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539108781] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:34,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371041774] [2023-12-21 05:14:34,789 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:14:34,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:34,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:34,790 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:34,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-21 05:14:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:34,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 05:14:34,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:34,868 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 05:14:34,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:34,903 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 05:14:34,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371041774] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:34,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:34,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-12-21 05:14:34,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075084793] [2023-12-21 05:14:34,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:34,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 05:14:34,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:34,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 05:14:34,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-21 05:14:34,904 INFO L87 Difference]: Start difference. First operand 158 states and 187 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:35,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:35,062 INFO L93 Difference]: Finished difference Result 196 states and 232 transitions. [2023-12-21 05:14:35,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 05:14:35,063 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-21 05:14:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:35,063 INFO L225 Difference]: With dead ends: 196 [2023-12-21 05:14:35,063 INFO L226 Difference]: Without dead ends: 146 [2023-12-21 05:14:35,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2023-12-21 05:14:35,064 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 20 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:35,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 98 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:35,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-21 05:14:35,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-12-21 05:14:35,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.1793103448275861) internal successors, (171), 145 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:35,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2023-12-21 05:14:35,110 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 28 [2023-12-21 05:14:35,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:35,110 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2023-12-21 05:14:35,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:35,110 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2023-12-21 05:14:35,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-21 05:14:35,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:35,110 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:35,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:35,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-21 05:14:35,315 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:35,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:35,315 INFO L85 PathProgramCache]: Analyzing trace with hash -271272933, now seen corresponding path program 26 times [2023-12-21 05:14:35,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:35,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973489290] [2023-12-21 05:14:35,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:35,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 05:14:35,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:35,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973489290] [2023-12-21 05:14:35,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973489290] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:35,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679175123] [2023-12-21 05:14:35,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:14:35,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:35,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:35,400 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:35,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-21 05:14:35,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:14:35,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:35,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 05:14:35,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:35,486 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 05:14:35,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 05:14:35,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679175123] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:35,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:35,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-12-21 05:14:35,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157164694] [2023-12-21 05:14:35,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:35,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 05:14:35,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:35,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 05:14:35,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-21 05:14:35,522 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:35,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:35,614 INFO L93 Difference]: Finished difference Result 156 states and 181 transitions. [2023-12-21 05:14:35,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 05:14:35,614 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-21 05:14:35,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:35,614 INFO L225 Difference]: With dead ends: 156 [2023-12-21 05:14:35,614 INFO L226 Difference]: Without dead ends: 151 [2023-12-21 05:14:35,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2023-12-21 05:14:35,615 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 21 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:35,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 93 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:35,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-12-21 05:14:35,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2023-12-21 05:14:35,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.178082191780822) internal successors, (172), 146 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:35,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 172 transitions. [2023-12-21 05:14:35,657 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 172 transitions. Word has length 28 [2023-12-21 05:14:35,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:35,657 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 172 transitions. [2023-12-21 05:14:35,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:35,657 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 172 transitions. [2023-12-21 05:14:35,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-21 05:14:35,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:35,658 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:35,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:35,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:35,862 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:35,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:35,863 INFO L85 PathProgramCache]: Analyzing trace with hash 356864972, now seen corresponding path program 27 times [2023-12-21 05:14:35,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:35,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504542730] [2023-12-21 05:14:35,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:35,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:36,116 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:36,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:36,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504542730] [2023-12-21 05:14:36,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504542730] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:36,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077477303] [2023-12-21 05:14:36,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:14:36,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:36,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:36,132 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:36,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-21 05:14:36,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 05:14:36,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:36,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 05:14:36,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:36,365 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:36,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:36,440 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:36,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077477303] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:36,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:36,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 32 [2023-12-21 05:14:36,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028558228] [2023-12-21 05:14:36,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:36,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 05:14:36,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:36,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 05:14:36,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2023-12-21 05:14:36,442 INFO L87 Difference]: Start difference. First operand 147 states and 172 transitions. Second operand has 32 states, 32 states have (on average 1.53125) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:36,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:36,807 INFO L93 Difference]: Finished difference Result 181 states and 210 transitions. [2023-12-21 05:14:36,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 05:14:36,807 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.53125) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-21 05:14:36,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:36,808 INFO L225 Difference]: With dead ends: 181 [2023-12-21 05:14:36,808 INFO L226 Difference]: Without dead ends: 173 [2023-12-21 05:14:36,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=1595, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 05:14:36,808 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 58 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:36,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 600 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:14:36,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-21 05:14:36,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 155. [2023-12-21 05:14:36,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.1753246753246753) internal successors, (181), 154 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:36,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 181 transitions. [2023-12-21 05:14:36,857 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 181 transitions. Word has length 29 [2023-12-21 05:14:36,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:36,858 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 181 transitions. [2023-12-21 05:14:36,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.53125) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:36,858 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 181 transitions. [2023-12-21 05:14:36,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-21 05:14:36,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:36,861 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:36,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:37,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-21 05:14:37,066 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:37,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:37,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1140515024, now seen corresponding path program 28 times [2023-12-21 05:14:37,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:37,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626556957] [2023-12-21 05:14:37,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:37,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:37,263 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:14:37,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:37,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626556957] [2023-12-21 05:14:37,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626556957] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:37,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638124919] [2023-12-21 05:14:37,264 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:14:37,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:37,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:37,265 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:37,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-21 05:14:37,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:14:37,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:37,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-21 05:14:37,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:37,482 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:14:37,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:37,556 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:14:37,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638124919] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:37,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:37,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 30 [2023-12-21 05:14:37,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849525318] [2023-12-21 05:14:37,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:37,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 05:14:37,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:37,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 05:14:37,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=793, Unknown=0, NotChecked=0, Total=870 [2023-12-21 05:14:37,557 INFO L87 Difference]: Start difference. First operand 155 states and 181 transitions. Second operand has 30 states, 30 states have (on average 1.6) internal successors, (48), 30 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:37,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:37,825 INFO L93 Difference]: Finished difference Result 168 states and 193 transitions. [2023-12-21 05:14:37,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 05:14:37,832 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6) internal successors, (48), 30 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-21 05:14:37,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:37,833 INFO L225 Difference]: With dead ends: 168 [2023-12-21 05:14:37,833 INFO L226 Difference]: Without dead ends: 147 [2023-12-21 05:14:37,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=1357, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 05:14:37,835 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 39 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:37,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 479 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:37,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-21 05:14:37,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-12-21 05:14:37,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.178082191780822) internal successors, (172), 146 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:37,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 172 transitions. [2023-12-21 05:14:37,878 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 172 transitions. Word has length 29 [2023-12-21 05:14:37,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:37,878 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 172 transitions. [2023-12-21 05:14:37,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6) internal successors, (48), 30 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:37,878 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 172 transitions. [2023-12-21 05:14:37,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-21 05:14:37,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:37,879 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:37,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-21 05:14:38,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-21 05:14:38,084 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:38,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:38,084 INFO L85 PathProgramCache]: Analyzing trace with hash 209665996, now seen corresponding path program 29 times [2023-12-21 05:14:38,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:38,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355130270] [2023-12-21 05:14:38,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:38,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:14:38,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:38,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355130270] [2023-12-21 05:14:38,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355130270] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:38,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644710919] [2023-12-21 05:14:38,267 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:14:38,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:38,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:38,268 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:38,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-21 05:14:38,309 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-21 05:14:38,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:38,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 05:14:38,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:38,417 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:14:38,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:14:38,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644710919] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:38,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:38,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 29 [2023-12-21 05:14:38,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465007604] [2023-12-21 05:14:38,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:38,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 05:14:38,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:38,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 05:14:38,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2023-12-21 05:14:38,557 INFO L87 Difference]: Start difference. First operand 147 states and 172 transitions. Second operand has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:38,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:38,778 INFO L93 Difference]: Finished difference Result 167 states and 195 transitions. [2023-12-21 05:14:38,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 05:14:38,779 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-21 05:14:38,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:38,780 INFO L225 Difference]: With dead ends: 167 [2023-12-21 05:14:38,780 INFO L226 Difference]: Without dead ends: 162 [2023-12-21 05:14:38,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=1206, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 05:14:38,780 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:38,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 310 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:38,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-21 05:14:38,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 157. [2023-12-21 05:14:38,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.1794871794871795) internal successors, (184), 156 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:38,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 184 transitions. [2023-12-21 05:14:38,830 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 184 transitions. Word has length 29 [2023-12-21 05:14:38,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:38,831 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 184 transitions. [2023-12-21 05:14:38,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:38,831 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 184 transitions. [2023-12-21 05:14:38,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 05:14:38,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:38,831 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:38,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:39,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-21 05:14:39,036 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:39,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:39,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1917604282, now seen corresponding path program 30 times [2023-12-21 05:14:39,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:39,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671459583] [2023-12-21 05:14:39,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:39,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:39,237 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:39,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:39,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671459583] [2023-12-21 05:14:39,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671459583] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:39,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569403646] [2023-12-21 05:14:39,237 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:14:39,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:39,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:39,254 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:39,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-21 05:14:39,294 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-21 05:14:39,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:39,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 05:14:39,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:39,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:39,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569403646] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:39,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:39,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2023-12-21 05:14:39,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449402565] [2023-12-21 05:14:39,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:39,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 05:14:39,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:39,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 05:14:39,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1029, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 05:14:39,857 INFO L87 Difference]: Start difference. First operand 157 states and 184 transitions. Second operand has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:40,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:40,474 INFO L93 Difference]: Finished difference Result 263 states and 303 transitions. [2023-12-21 05:14:40,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 05:14:40,474 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-21 05:14:40,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:40,475 INFO L225 Difference]: With dead ends: 263 [2023-12-21 05:14:40,475 INFO L226 Difference]: Without dead ends: 233 [2023-12-21 05:14:40,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=469, Invalid=2393, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 05:14:40,476 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 174 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:40,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 503 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:40,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-12-21 05:14:40,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 172. [2023-12-21 05:14:40,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.1812865497076024) internal successors, (202), 171 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:40,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 202 transitions. [2023-12-21 05:14:40,543 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 202 transitions. Word has length 30 [2023-12-21 05:14:40,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:40,543 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 202 transitions. [2023-12-21 05:14:40,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:40,543 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 202 transitions. [2023-12-21 05:14:40,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 05:14:40,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:40,551 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:40,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:40,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-21 05:14:40,757 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:40,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:40,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1155179155, now seen corresponding path program 31 times [2023-12-21 05:14:40,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:40,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297389761] [2023-12-21 05:14:40,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:40,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:40,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:40,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297389761] [2023-12-21 05:14:40,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297389761] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:40,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211852832] [2023-12-21 05:14:40,946 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:14:40,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:40,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:40,955 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:40,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-21 05:14:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:41,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 05:14:41,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:41,302 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:41,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:41,550 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:41,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211852832] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:41,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:41,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2023-12-21 05:14:41,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638638890] [2023-12-21 05:14:41,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:41,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 05:14:41,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:41,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 05:14:41,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1030, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 05:14:41,551 INFO L87 Difference]: Start difference. First operand 172 states and 202 transitions. Second operand has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:42,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:42,211 INFO L93 Difference]: Finished difference Result 204 states and 237 transitions. [2023-12-21 05:14:42,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 05:14:42,221 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-21 05:14:42,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:42,222 INFO L225 Difference]: With dead ends: 204 [2023-12-21 05:14:42,223 INFO L226 Difference]: Without dead ends: 189 [2023-12-21 05:14:42,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=261, Invalid=2091, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 05:14:42,223 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 268 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:42,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 786 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:14:42,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-21 05:14:42,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 175. [2023-12-21 05:14:42,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.1781609195402298) internal successors, (205), 174 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:42,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 205 transitions. [2023-12-21 05:14:42,285 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 205 transitions. Word has length 30 [2023-12-21 05:14:42,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:42,286 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 205 transitions. [2023-12-21 05:14:42,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:42,286 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 205 transitions. [2023-12-21 05:14:42,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 05:14:42,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:42,286 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:42,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:42,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-12-21 05:14:42,491 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:42,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:42,491 INFO L85 PathProgramCache]: Analyzing trace with hash -2061096389, now seen corresponding path program 32 times [2023-12-21 05:14:42,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:42,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209913845] [2023-12-21 05:14:42,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:42,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 05:14:42,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:42,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209913845] [2023-12-21 05:14:42,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209913845] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:42,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469595500] [2023-12-21 05:14:42,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:14:42,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:42,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:42,546 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:42,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-21 05:14:42,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:14:42,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:42,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 05:14:42,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 05:14:42,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 05:14:42,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469595500] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:42,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:42,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2023-12-21 05:14:42,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745779535] [2023-12-21 05:14:42,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:42,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 05:14:42,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:42,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 05:14:42,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-12-21 05:14:42,688 INFO L87 Difference]: Start difference. First operand 175 states and 205 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:42,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:42,826 INFO L93 Difference]: Finished difference Result 218 states and 257 transitions. [2023-12-21 05:14:42,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 05:14:42,827 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-21 05:14:42,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:42,827 INFO L225 Difference]: With dead ends: 218 [2023-12-21 05:14:42,828 INFO L226 Difference]: Without dead ends: 205 [2023-12-21 05:14:42,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-12-21 05:14:42,828 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 23 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:42,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 151 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:42,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-21 05:14:42,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 197. [2023-12-21 05:14:42,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.1938775510204083) internal successors, (234), 196 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:42,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 234 transitions. [2023-12-21 05:14:42,898 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 234 transitions. Word has length 30 [2023-12-21 05:14:42,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:42,899 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 234 transitions. [2023-12-21 05:14:42,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:42,899 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 234 transitions. [2023-12-21 05:14:42,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 05:14:42,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:42,899 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:42,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:43,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:43,104 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:43,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:43,104 INFO L85 PathProgramCache]: Analyzing trace with hash -724850578, now seen corresponding path program 33 times [2023-12-21 05:14:43,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:43,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132863210] [2023-12-21 05:14:43,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:43,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 05:14:43,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:43,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132863210] [2023-12-21 05:14:43,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132863210] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:43,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644854794] [2023-12-21 05:14:43,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:14:43,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:43,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:43,161 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:43,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-21 05:14:43,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 05:14:43,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:43,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 05:14:43,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:43,252 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 05:14:43,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:43,283 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 05:14:43,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644854794] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:43,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:43,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2023-12-21 05:14:43,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665168478] [2023-12-21 05:14:43,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:43,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 05:14:43,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:43,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 05:14:43,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-12-21 05:14:43,285 INFO L87 Difference]: Start difference. First operand 197 states and 234 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:43,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:43,411 INFO L93 Difference]: Finished difference Result 324 states and 394 transitions. [2023-12-21 05:14:43,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 05:14:43,411 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-21 05:14:43,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:43,412 INFO L225 Difference]: With dead ends: 324 [2023-12-21 05:14:43,412 INFO L226 Difference]: Without dead ends: 241 [2023-12-21 05:14:43,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-12-21 05:14:43,412 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 31 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:43,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 76 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:43,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-21 05:14:43,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 235. [2023-12-21 05:14:43,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.1923076923076923) internal successors, (279), 234 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:43,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 279 transitions. [2023-12-21 05:14:43,493 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 279 transitions. Word has length 30 [2023-12-21 05:14:43,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:43,493 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 279 transitions. [2023-12-21 05:14:43,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:43,494 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 279 transitions. [2023-12-21 05:14:43,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-21 05:14:43,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:43,494 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:43,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:43,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-12-21 05:14:43,699 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:43,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:43,699 INFO L85 PathProgramCache]: Analyzing trace with hash -2006090695, now seen corresponding path program 34 times [2023-12-21 05:14:43,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:43,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177741525] [2023-12-21 05:14:43,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:43,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:43,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:43,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177741525] [2023-12-21 05:14:43,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177741525] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:43,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965639585] [2023-12-21 05:14:43,924 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:14:43,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:43,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:43,925 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:43,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-21 05:14:43,965 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:14:43,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:43,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 05:14:43,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:44,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:44,258 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:44,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965639585] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:44,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:44,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 35 [2023-12-21 05:14:44,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217552995] [2023-12-21 05:14:44,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:44,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 05:14:44,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:44,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 05:14:44,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 05:14:44,259 INFO L87 Difference]: Start difference. First operand 235 states and 279 transitions. Second operand has 35 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 35 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:44,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:44,677 INFO L93 Difference]: Finished difference Result 276 states and 325 transitions. [2023-12-21 05:14:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 05:14:44,677 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 35 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-21 05:14:44,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:44,678 INFO L225 Difference]: With dead ends: 276 [2023-12-21 05:14:44,678 INFO L226 Difference]: Without dead ends: 268 [2023-12-21 05:14:44,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=1932, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 05:14:44,678 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 66 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:44,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 767 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:14:44,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-12-21 05:14:44,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 243. [2023-12-21 05:14:44,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.1900826446280992) internal successors, (288), 242 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:44,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 288 transitions. [2023-12-21 05:14:44,760 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 288 transitions. Word has length 31 [2023-12-21 05:14:44,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:44,760 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 288 transitions. [2023-12-21 05:14:44,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 35 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:44,760 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 288 transitions. [2023-12-21 05:14:44,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-21 05:14:44,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:44,761 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:44,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-12-21 05:14:44,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:44,965 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:44,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:44,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1115054649, now seen corresponding path program 35 times [2023-12-21 05:14:44,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:44,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85630645] [2023-12-21 05:14:44,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:44,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:14:45,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:45,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85630645] [2023-12-21 05:14:45,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85630645] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:45,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505838030] [2023-12-21 05:14:45,177 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:14:45,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:45,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:45,178 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:45,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-21 05:14:45,220 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-21 05:14:45,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:45,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 05:14:45,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:14:45,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:14:45,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505838030] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:45,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:45,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 33 [2023-12-21 05:14:45,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150225997] [2023-12-21 05:14:45,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:45,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 05:14:45,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:45,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 05:14:45,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=972, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 05:14:45,508 INFO L87 Difference]: Start difference. First operand 243 states and 288 transitions. Second operand has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:45,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:45,880 INFO L93 Difference]: Finished difference Result 257 states and 301 transitions. [2023-12-21 05:14:45,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 05:14:45,880 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-21 05:14:45,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:45,881 INFO L225 Difference]: With dead ends: 257 [2023-12-21 05:14:45,881 INFO L226 Difference]: Without dead ends: 235 [2023-12-21 05:14:45,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=1670, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 05:14:45,882 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 46 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:45,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 633 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:14:45,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-12-21 05:14:45,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2023-12-21 05:14:45,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.1923076923076923) internal successors, (279), 234 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:45,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 279 transitions. [2023-12-21 05:14:45,964 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 279 transitions. Word has length 31 [2023-12-21 05:14:45,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:45,964 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 279 transitions. [2023-12-21 05:14:45,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:45,964 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 279 transitions. [2023-12-21 05:14:45,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-21 05:14:45,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:45,964 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:45,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-12-21 05:14:46,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-12-21 05:14:46,169 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:46,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:46,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1008538498, now seen corresponding path program 36 times [2023-12-21 05:14:46,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:46,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608156381] [2023-12-21 05:14:46,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:46,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:46,286 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 05:14:46,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:46,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608156381] [2023-12-21 05:14:46,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608156381] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:46,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919428076] [2023-12-21 05:14:46,286 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:14:46,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:46,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:46,287 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:46,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-21 05:14:46,339 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-21 05:14:46,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:46,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 05:14:46,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 05:14:46,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:46,589 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 05:14:46,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919428076] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:46,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:46,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2023-12-21 05:14:46,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404840941] [2023-12-21 05:14:46,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:46,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 05:14:46,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:46,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 05:14:46,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2023-12-21 05:14:46,593 INFO L87 Difference]: Start difference. First operand 235 states and 279 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:46,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:46,962 INFO L93 Difference]: Finished difference Result 328 states and 384 transitions. [2023-12-21 05:14:46,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 05:14:46,963 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-21 05:14:46,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:46,972 INFO L225 Difference]: With dead ends: 328 [2023-12-21 05:14:46,972 INFO L226 Difference]: Without dead ends: 285 [2023-12-21 05:14:46,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=1161, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 05:14:46,973 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 179 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:46,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 305 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:46,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-21 05:14:47,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 255. [2023-12-21 05:14:47,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.1732283464566928) internal successors, (298), 254 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:47,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 298 transitions. [2023-12-21 05:14:47,070 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 298 transitions. Word has length 31 [2023-12-21 05:14:47,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:47,070 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 298 transitions. [2023-12-21 05:14:47,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:47,071 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 298 transitions. [2023-12-21 05:14:47,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-21 05:14:47,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:47,071 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:47,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-12-21 05:14:47,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-12-21 05:14:47,276 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:47,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:47,277 INFO L85 PathProgramCache]: Analyzing trace with hash -2143968199, now seen corresponding path program 37 times [2023-12-21 05:14:47,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:47,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388298709] [2023-12-21 05:14:47,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:47,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:14:47,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:47,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388298709] [2023-12-21 05:14:47,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388298709] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:47,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502988109] [2023-12-21 05:14:47,496 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:14:47,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:47,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:47,519 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:47,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-21 05:14:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:47,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-21 05:14:47,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:14:47,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:14:47,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502988109] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:47,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:47,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 31 [2023-12-21 05:14:47,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049788958] [2023-12-21 05:14:47,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:47,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 05:14:47,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:47,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 05:14:47,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2023-12-21 05:14:47,831 INFO L87 Difference]: Start difference. First operand 255 states and 298 transitions. Second operand has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:48,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:48,169 INFO L93 Difference]: Finished difference Result 285 states and 332 transitions. [2023-12-21 05:14:48,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 05:14:48,170 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-21 05:14:48,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:48,171 INFO L225 Difference]: With dead ends: 285 [2023-12-21 05:14:48,171 INFO L226 Difference]: Without dead ends: 262 [2023-12-21 05:14:48,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=1426, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 05:14:48,171 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:48,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 390 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:48,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-21 05:14:48,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 253. [2023-12-21 05:14:48,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.1785714285714286) internal successors, (297), 252 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:48,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 297 transitions. [2023-12-21 05:14:48,256 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 297 transitions. Word has length 31 [2023-12-21 05:14:48,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:48,256 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 297 transitions. [2023-12-21 05:14:48,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:48,257 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 297 transitions. [2023-12-21 05:14:48,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-21 05:14:48,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:48,257 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:48,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:48,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-12-21 05:14:48,462 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:48,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:48,462 INFO L85 PathProgramCache]: Analyzing trace with hash -479131682, now seen corresponding path program 38 times [2023-12-21 05:14:48,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:48,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620014938] [2023-12-21 05:14:48,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:48,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:48,583 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 05:14:48,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:48,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620014938] [2023-12-21 05:14:48,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620014938] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:48,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613511130] [2023-12-21 05:14:48,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:14:48,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:48,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:48,585 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:48,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-21 05:14:48,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:14:48,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:48,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 05:14:48,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:48,769 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 05:14:48,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 05:14:48,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613511130] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:48,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:48,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2023-12-21 05:14:48,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15193171] [2023-12-21 05:14:48,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:48,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 05:14:48,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:48,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 05:14:48,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2023-12-21 05:14:48,896 INFO L87 Difference]: Start difference. First operand 253 states and 297 transitions. Second operand has 25 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:49,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:49,280 INFO L93 Difference]: Finished difference Result 281 states and 324 transitions. [2023-12-21 05:14:49,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 05:14:49,280 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-21 05:14:49,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:49,281 INFO L225 Difference]: With dead ends: 281 [2023-12-21 05:14:49,281 INFO L226 Difference]: Without dead ends: 258 [2023-12-21 05:14:49,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=1027, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 05:14:49,281 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 174 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:49,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 521 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:14:49,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-12-21 05:14:49,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 253. [2023-12-21 05:14:49,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.1547619047619047) internal successors, (291), 252 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:49,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 291 transitions. [2023-12-21 05:14:49,383 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 291 transitions. Word has length 31 [2023-12-21 05:14:49,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:49,383 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 291 transitions. [2023-12-21 05:14:49,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:49,383 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 291 transitions. [2023-12-21 05:14:49,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 05:14:49,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:49,384 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:49,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:49,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-12-21 05:14:49,589 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:49,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:49,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1680422637, now seen corresponding path program 39 times [2023-12-21 05:14:49,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:49,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282729226] [2023-12-21 05:14:49,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:49,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:49,798 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:49,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:49,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282729226] [2023-12-21 05:14:49,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282729226] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:49,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148701411] [2023-12-21 05:14:49,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:14:49,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:49,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:49,807 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:49,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-21 05:14:49,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-21 05:14:49,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:49,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 05:14:49,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:50,246 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:50,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:50,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148701411] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:50,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:50,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2023-12-21 05:14:50,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723003431] [2023-12-21 05:14:50,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:50,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-21 05:14:50,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:50,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-21 05:14:50,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1375, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 05:14:50,576 INFO L87 Difference]: Start difference. First operand 253 states and 291 transitions. Second operand has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:51,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:51,443 INFO L93 Difference]: Finished difference Result 422 states and 477 transitions. [2023-12-21 05:14:51,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 05:14:51,444 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-21 05:14:51,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:51,445 INFO L225 Difference]: With dead ends: 422 [2023-12-21 05:14:51,445 INFO L226 Difference]: Without dead ends: 388 [2023-12-21 05:14:51,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=624, Invalid=3282, Unknown=0, NotChecked=0, Total=3906 [2023-12-21 05:14:51,449 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 222 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:51,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 609 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:14:51,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-12-21 05:14:51,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 281. [2023-12-21 05:14:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.1535714285714285) internal successors, (323), 280 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:51,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 323 transitions. [2023-12-21 05:14:51,589 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 323 transitions. Word has length 32 [2023-12-21 05:14:51,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:51,591 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 323 transitions. [2023-12-21 05:14:51,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:51,591 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 323 transitions. [2023-12-21 05:14:51,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 05:14:51,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:51,593 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:51,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:51,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-12-21 05:14:51,798 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:51,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:51,798 INFO L85 PathProgramCache]: Analyzing trace with hash 913416602, now seen corresponding path program 40 times [2023-12-21 05:14:51,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:51,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138586938] [2023-12-21 05:14:51,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:51,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:51,997 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:51,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:51,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138586938] [2023-12-21 05:14:51,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138586938] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:51,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544509911] [2023-12-21 05:14:51,998 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:14:51,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:51,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:51,999 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:52,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-21 05:14:52,040 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:14:52,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:52,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 05:14:52,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:52,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:14:52,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544509911] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:52,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:52,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2023-12-21 05:14:52,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950753946] [2023-12-21 05:14:52,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:52,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-21 05:14:52,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:52,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-21 05:14:52,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1376, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 05:14:52,696 INFO L87 Difference]: Start difference. First operand 281 states and 323 transitions. Second operand has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:53,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:53,598 INFO L93 Difference]: Finished difference Result 318 states and 364 transitions. [2023-12-21 05:14:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 05:14:53,598 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-21 05:14:53,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:53,599 INFO L225 Difference]: With dead ends: 318 [2023-12-21 05:14:53,599 INFO L226 Difference]: Without dead ends: 301 [2023-12-21 05:14:53,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 35 SyntacticMatches, 7 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=327, Invalid=2865, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 05:14:53,599 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 223 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:53,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 1016 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:14:53,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-21 05:14:53,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 285. [2023-12-21 05:14:53,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.1514084507042253) internal successors, (327), 284 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:53,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 327 transitions. [2023-12-21 05:14:53,717 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 327 transitions. Word has length 32 [2023-12-21 05:14:53,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:53,717 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 327 transitions. [2023-12-21 05:14:53,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:53,717 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 327 transitions. [2023-12-21 05:14:53,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 05:14:53,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:53,718 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:53,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-12-21 05:14:53,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-12-21 05:14:53,923 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:53,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:53,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1981187314, now seen corresponding path program 41 times [2023-12-21 05:14:53,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:53,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300744178] [2023-12-21 05:14:53,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:53,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:53,993 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 05:14:53,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:53,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300744178] [2023-12-21 05:14:53,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300744178] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:53,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107358838] [2023-12-21 05:14:53,993 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:14:53,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:53,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:53,994 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:53,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-21 05:14:54,035 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-21 05:14:54,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:54,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 05:14:54,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:54,091 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 05:14:54,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 05:14:54,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107358838] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:54,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:54,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2023-12-21 05:14:54,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159342279] [2023-12-21 05:14:54,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:54,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 05:14:54,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:54,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 05:14:54,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2023-12-21 05:14:54,138 INFO L87 Difference]: Start difference. First operand 285 states and 327 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:54,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:54,334 INFO L93 Difference]: Finished difference Result 345 states and 398 transitions. [2023-12-21 05:14:54,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 05:14:54,334 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-21 05:14:54,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:54,335 INFO L225 Difference]: With dead ends: 345 [2023-12-21 05:14:54,335 INFO L226 Difference]: Without dead ends: 273 [2023-12-21 05:14:54,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2023-12-21 05:14:54,335 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 27 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:54,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 137 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:54,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-21 05:14:54,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-12-21 05:14:54,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.1433823529411764) internal successors, (311), 272 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:54,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 311 transitions. [2023-12-21 05:14:54,446 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 311 transitions. Word has length 32 [2023-12-21 05:14:54,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:54,446 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 311 transitions. [2023-12-21 05:14:54,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:54,446 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 311 transitions. [2023-12-21 05:14:54,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 05:14:54,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:54,446 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:54,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:54,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2023-12-21 05:14:54,651 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:54,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:54,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1058464599, now seen corresponding path program 42 times [2023-12-21 05:14:54,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:54,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105561037] [2023-12-21 05:14:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:54,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 05:14:54,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:54,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105561037] [2023-12-21 05:14:54,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105561037] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:54,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385373886] [2023-12-21 05:14:54,715 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:14:54,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:54,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:54,738 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:54,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-12-21 05:14:54,778 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-21 05:14:54,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:54,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 05:14:54,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:54,834 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 05:14:54,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:54,881 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 05:14:54,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385373886] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:54,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:54,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2023-12-21 05:14:54,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349219293] [2023-12-21 05:14:54,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:54,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 05:14:54,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:54,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 05:14:54,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2023-12-21 05:14:54,884 INFO L87 Difference]: Start difference. First operand 273 states and 311 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:55,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:55,082 INFO L93 Difference]: Finished difference Result 287 states and 325 transitions. [2023-12-21 05:14:55,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 05:14:55,082 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-21 05:14:55,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:55,083 INFO L225 Difference]: With dead ends: 287 [2023-12-21 05:14:55,083 INFO L226 Difference]: Without dead ends: 282 [2023-12-21 05:14:55,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2023-12-21 05:14:55,084 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 34 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:55,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 158 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:14:55,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-12-21 05:14:55,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 274. [2023-12-21 05:14:55,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.1428571428571428) internal successors, (312), 273 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:55,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 312 transitions. [2023-12-21 05:14:55,195 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 312 transitions. Word has length 32 [2023-12-21 05:14:55,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:55,195 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 312 transitions. [2023-12-21 05:14:55,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:55,195 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 312 transitions. [2023-12-21 05:14:55,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 05:14:55,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:55,196 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:55,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:55,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:55,400 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:55,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:55,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1990835628, now seen corresponding path program 43 times [2023-12-21 05:14:55,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:55,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221927120] [2023-12-21 05:14:55,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:55,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:55,727 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:55,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:55,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221927120] [2023-12-21 05:14:55,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221927120] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:55,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712209904] [2023-12-21 05:14:55,727 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:14:55,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:55,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:55,740 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:55,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-12-21 05:14:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:55,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-21 05:14:55,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:56,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:56,154 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:14:56,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712209904] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:56,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:56,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 38 [2023-12-21 05:14:56,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128534096] [2023-12-21 05:14:56,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:56,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-21 05:14:56,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:56,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-21 05:14:56,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1314, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 05:14:56,155 INFO L87 Difference]: Start difference. First operand 274 states and 312 transitions. Second operand has 38 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:56,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:56,714 INFO L93 Difference]: Finished difference Result 318 states and 361 transitions. [2023-12-21 05:14:56,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 05:14:56,715 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-21 05:14:56,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:56,716 INFO L225 Difference]: With dead ends: 318 [2023-12-21 05:14:56,716 INFO L226 Difference]: Without dead ends: 310 [2023-12-21 05:14:56,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=2301, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 05:14:56,716 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 76 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:56,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 879 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:14:56,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-12-21 05:14:56,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 282. [2023-12-21 05:14:56,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.1423487544483986) internal successors, (321), 281 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 321 transitions. [2023-12-21 05:14:56,830 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 321 transitions. Word has length 33 [2023-12-21 05:14:56,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:56,830 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 321 transitions. [2023-12-21 05:14:56,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:56,830 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 321 transitions. [2023-12-21 05:14:56,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 05:14:56,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:56,831 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:56,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:57,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-12-21 05:14:57,036 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:57,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:57,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1192631280, now seen corresponding path program 44 times [2023-12-21 05:14:57,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:57,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262008780] [2023-12-21 05:14:57,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:57,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:57,336 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:14:57,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:57,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262008780] [2023-12-21 05:14:57,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262008780] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:57,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451493046] [2023-12-21 05:14:57,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:14:57,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:57,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:57,337 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:57,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-12-21 05:14:57,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:14:57,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:57,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 05:14:57,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:57,617 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:14:57,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:14:57,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451493046] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:57,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:57,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 36 [2023-12-21 05:14:57,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450616354] [2023-12-21 05:14:57,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:57,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-21 05:14:57,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:57,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-21 05:14:57,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 05:14:57,697 INFO L87 Difference]: Start difference. First operand 282 states and 321 transitions. Second operand has 36 states, 36 states have (on average 1.5) internal successors, (54), 36 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:58,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:58,161 INFO L93 Difference]: Finished difference Result 297 states and 335 transitions. [2023-12-21 05:14:58,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 05:14:58,162 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5) internal successors, (54), 36 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-21 05:14:58,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:58,162 INFO L225 Difference]: With dead ends: 297 [2023-12-21 05:14:58,162 INFO L226 Difference]: Without dead ends: 274 [2023-12-21 05:14:58,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=2015, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 05:14:58,163 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 56 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:58,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 747 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:14:58,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-12-21 05:14:58,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2023-12-21 05:14:58,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.1428571428571428) internal successors, (312), 273 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:58,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 312 transitions. [2023-12-21 05:14:58,276 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 312 transitions. Word has length 33 [2023-12-21 05:14:58,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:58,276 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 312 transitions. [2023-12-21 05:14:58,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5) internal successors, (54), 36 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:58,276 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 312 transitions. [2023-12-21 05:14:58,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 05:14:58,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:58,277 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:58,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-12-21 05:14:58,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:58,482 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:58,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:58,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1003734612, now seen corresponding path program 45 times [2023-12-21 05:14:58,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:58,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716349974] [2023-12-21 05:14:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:58,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:14:58,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:58,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716349974] [2023-12-21 05:14:58,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716349974] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:58,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749951134] [2023-12-21 05:14:58,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:14:58,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:58,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:58,704 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:58,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-12-21 05:14:58,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 05:14:58,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:58,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 05:14:58,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:14:58,985 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:14:58,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:14:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:14:59,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749951134] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:14:59,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:14:59,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 34 [2023-12-21 05:14:59,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488960305] [2023-12-21 05:14:59,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:14:59,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 05:14:59,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:14:59,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 05:14:59,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1032, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 05:14:59,070 INFO L87 Difference]: Start difference. First operand 274 states and 312 transitions. Second operand has 34 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 34 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:59,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:14:59,484 INFO L93 Difference]: Finished difference Result 288 states and 325 transitions. [2023-12-21 05:14:59,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 05:14:59,484 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 34 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-21 05:14:59,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:14:59,485 INFO L225 Difference]: With dead ends: 288 [2023-12-21 05:14:59,485 INFO L226 Difference]: Without dead ends: 264 [2023-12-21 05:14:59,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=1747, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 05:14:59,485 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 39 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:14:59,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 528 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:14:59,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-21 05:14:59,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-12-21 05:14:59,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.144486692015209) internal successors, (301), 263 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:59,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 301 transitions. [2023-12-21 05:14:59,593 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 301 transitions. Word has length 33 [2023-12-21 05:14:59,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:14:59,593 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 301 transitions. [2023-12-21 05:14:59,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 34 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:14:59,593 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 301 transitions. [2023-12-21 05:14:59,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 05:14:59,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:14:59,594 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:14:59,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-12-21 05:14:59,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:59,798 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:14:59,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:14:59,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1518143472, now seen corresponding path program 46 times [2023-12-21 05:14:59,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:14:59,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426459304] [2023-12-21 05:14:59,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:14:59,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:14:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:14:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:14:59,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:14:59,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426459304] [2023-12-21 05:14:59,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426459304] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:14:59,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390061564] [2023-12-21 05:14:59,955 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:14:59,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:14:59,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:14:59,956 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:14:59,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-12-21 05:14:59,998 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:14:59,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:14:59,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-21 05:15:00,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:00,166 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:15:00,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:00,222 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:15:00,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390061564] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:00,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:00,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 33 [2023-12-21 05:15:00,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709904224] [2023-12-21 05:15:00,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:00,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 05:15:00,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:00,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 05:15:00,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=962, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 05:15:00,223 INFO L87 Difference]: Start difference. First operand 264 states and 301 transitions. Second operand has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:00,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:00,493 INFO L93 Difference]: Finished difference Result 286 states and 326 transitions. [2023-12-21 05:15:00,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 05:15:00,493 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-21 05:15:00,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:00,494 INFO L225 Difference]: With dead ends: 286 [2023-12-21 05:15:00,494 INFO L226 Difference]: Without dead ends: 281 [2023-12-21 05:15:00,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=1573, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 05:15:00,494 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 31 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:00,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 335 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:15:00,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-21 05:15:00,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 275. [2023-12-21 05:15:00,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.145985401459854) internal successors, (314), 274 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:00,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 314 transitions. [2023-12-21 05:15:00,613 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 314 transitions. Word has length 33 [2023-12-21 05:15:00,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:00,613 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 314 transitions. [2023-12-21 05:15:00,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:00,613 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 314 transitions. [2023-12-21 05:15:00,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 05:15:00,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:00,614 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:00,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-12-21 05:15:00,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2023-12-21 05:15:00,819 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:00,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:00,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1031087066, now seen corresponding path program 47 times [2023-12-21 05:15:00,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:00,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785641729] [2023-12-21 05:15:00,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:00,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:15:01,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:01,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785641729] [2023-12-21 05:15:01,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785641729] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:01,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40062766] [2023-12-21 05:15:01,064 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:15:01,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:01,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:01,065 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:01,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-12-21 05:15:01,109 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-21 05:15:01,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:01,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 05:15:01,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:15:01,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:01,941 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:15:01,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40062766] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:01,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:01,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 44 [2023-12-21 05:15:01,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541536942] [2023-12-21 05:15:01,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:01,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 05:15:01,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:01,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 05:15:01,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1771, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 05:15:01,943 INFO L87 Difference]: Start difference. First operand 275 states and 314 transitions. Second operand has 44 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 44 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:02,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:02,947 INFO L93 Difference]: Finished difference Result 467 states and 524 transitions. [2023-12-21 05:15:02,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 05:15:02,948 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 44 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-21 05:15:02,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:02,949 INFO L225 Difference]: With dead ends: 467 [2023-12-21 05:15:02,949 INFO L226 Difference]: Without dead ends: 431 [2023-12-21 05:15:02,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=801, Invalid=4311, Unknown=0, NotChecked=0, Total=5112 [2023-12-21 05:15:02,950 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 313 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:02,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 761 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:15:02,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-12-21 05:15:03,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 304. [2023-12-21 05:15:03,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.1452145214521452) internal successors, (347), 303 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:03,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 347 transitions. [2023-12-21 05:15:03,085 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 347 transitions. Word has length 34 [2023-12-21 05:15:03,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:03,085 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 347 transitions. [2023-12-21 05:15:03,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 44 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:03,085 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 347 transitions. [2023-12-21 05:15:03,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 05:15:03,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:03,086 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:03,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-12-21 05:15:03,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-12-21 05:15:03,288 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:03,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:03,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1271263539, now seen corresponding path program 48 times [2023-12-21 05:15:03,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:03,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719457888] [2023-12-21 05:15:03,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:03,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:15:03,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:03,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719457888] [2023-12-21 05:15:03,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719457888] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:03,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023304217] [2023-12-21 05:15:03,499 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:15:03,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:03,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:03,500 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:03,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-12-21 05:15:03,544 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-21 05:15:03,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:03,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 05:15:03,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:15:03,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:04,360 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:15:04,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023304217] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:04,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:04,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 44 [2023-12-21 05:15:04,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667386001] [2023-12-21 05:15:04,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:04,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 05:15:04,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:04,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 05:15:04,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1772, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 05:15:04,361 INFO L87 Difference]: Start difference. First operand 304 states and 347 transitions. Second operand has 44 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 44 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:05,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:05,494 INFO L93 Difference]: Finished difference Result 343 states and 390 transitions. [2023-12-21 05:15:05,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 05:15:05,494 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 44 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-21 05:15:05,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:05,495 INFO L225 Difference]: With dead ends: 343 [2023-12-21 05:15:05,495 INFO L226 Difference]: Without dead ends: 325 [2023-12-21 05:15:05,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 35 SyntacticMatches, 8 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=399, Invalid=3761, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 05:15:05,496 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 419 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:05,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1187 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:15:05,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-12-21 05:15:05,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 308. [2023-12-21 05:15:05,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.1433224755700326) internal successors, (351), 307 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:05,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 351 transitions. [2023-12-21 05:15:05,672 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 351 transitions. Word has length 34 [2023-12-21 05:15:05,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:05,672 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 351 transitions. [2023-12-21 05:15:05,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 44 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:05,672 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 351 transitions. [2023-12-21 05:15:05,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 05:15:05,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:05,673 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:05,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-12-21 05:15:05,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-12-21 05:15:05,878 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:05,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:05,878 INFO L85 PathProgramCache]: Analyzing trace with hash 211384951, now seen corresponding path program 49 times [2023-12-21 05:15:05,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:05,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295381028] [2023-12-21 05:15:05,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:05,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:05,955 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 05:15:05,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:05,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295381028] [2023-12-21 05:15:05,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295381028] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:05,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762383736] [2023-12-21 05:15:05,956 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:15:05,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:05,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:05,957 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:05,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-12-21 05:15:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:06,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 05:15:06,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 05:15:06,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:06,105 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 05:15:06,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762383736] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:06,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:06,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2023-12-21 05:15:06,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570296263] [2023-12-21 05:15:06,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:06,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 05:15:06,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:06,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 05:15:06,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-12-21 05:15:06,106 INFO L87 Difference]: Start difference. First operand 308 states and 351 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:06,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:06,393 INFO L93 Difference]: Finished difference Result 363 states and 417 transitions. [2023-12-21 05:15:06,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 05:15:06,394 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-21 05:15:06,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:06,395 INFO L225 Difference]: With dead ends: 363 [2023-12-21 05:15:06,395 INFO L226 Difference]: Without dead ends: 349 [2023-12-21 05:15:06,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 53 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2023-12-21 05:15:06,395 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 33 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:06,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 149 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:15:06,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-12-21 05:15:06,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 336. [2023-12-21 05:15:06,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 1.1582089552238806) internal successors, (388), 335 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:06,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 388 transitions. [2023-12-21 05:15:06,561 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 388 transitions. Word has length 34 [2023-12-21 05:15:06,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:06,561 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 388 transitions. [2023-12-21 05:15:06,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:06,561 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 388 transitions. [2023-12-21 05:15:06,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 05:15:06,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:06,562 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:06,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-12-21 05:15:06,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-12-21 05:15:06,766 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:06,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:06,767 INFO L85 PathProgramCache]: Analyzing trace with hash -48686258, now seen corresponding path program 50 times [2023-12-21 05:15:06,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:06,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981760299] [2023-12-21 05:15:06,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:06,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:06,830 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 05:15:06,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:06,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981760299] [2023-12-21 05:15:06,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981760299] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:06,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392664957] [2023-12-21 05:15:06,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:15:06,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:06,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:06,831 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:06,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-12-21 05:15:06,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:15:06,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:06,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 05:15:06,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 05:15:06,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:06,992 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 05:15:06,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392664957] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:06,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:06,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2023-12-21 05:15:06,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173124536] [2023-12-21 05:15:06,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:06,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 05:15:06,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:06,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 05:15:06,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-12-21 05:15:06,993 INFO L87 Difference]: Start difference. First operand 336 states and 388 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:07,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:07,291 INFO L93 Difference]: Finished difference Result 517 states and 612 transitions. [2023-12-21 05:15:07,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 05:15:07,291 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-21 05:15:07,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:07,292 INFO L225 Difference]: With dead ends: 517 [2023-12-21 05:15:07,292 INFO L226 Difference]: Without dead ends: 402 [2023-12-21 05:15:07,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 53 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2023-12-21 05:15:07,293 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 36 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:07,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 111 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:15:07,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-12-21 05:15:07,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 394. [2023-12-21 05:15:07,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 1.1577608142493638) internal successors, (455), 393 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:07,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 455 transitions. [2023-12-21 05:15:07,486 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 455 transitions. Word has length 34 [2023-12-21 05:15:07,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:07,486 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 455 transitions. [2023-12-21 05:15:07,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:07,487 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 455 transitions. [2023-12-21 05:15:07,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 05:15:07,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:07,487 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:07,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-12-21 05:15:07,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-12-21 05:15:07,692 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:07,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:07,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1309739303, now seen corresponding path program 51 times [2023-12-21 05:15:07,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:07,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141111700] [2023-12-21 05:15:07,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:07,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:08,034 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:15:08,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:08,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141111700] [2023-12-21 05:15:08,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141111700] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:08,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662762342] [2023-12-21 05:15:08,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:15:08,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:08,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:08,036 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:08,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-12-21 05:15:08,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-21 05:15:08,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:08,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-21 05:15:08,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:15:08,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:08,441 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:15:08,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662762342] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:08,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:08,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 41 [2023-12-21 05:15:08,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459993605] [2023-12-21 05:15:08,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:08,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-21 05:15:08,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:08,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-21 05:15:08,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1541, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 05:15:08,443 INFO L87 Difference]: Start difference. First operand 394 states and 455 transitions. Second operand has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 41 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:09,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:09,076 INFO L93 Difference]: Finished difference Result 446 states and 513 transitions. [2023-12-21 05:15:09,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 05:15:09,077 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 41 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-21 05:15:09,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:09,078 INFO L225 Difference]: With dead ends: 446 [2023-12-21 05:15:09,078 INFO L226 Difference]: Without dead ends: 438 [2023-12-21 05:15:09,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=2702, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 05:15:09,078 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 83 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:09,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1237 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:15:09,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-12-21 05:15:09,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 402. [2023-12-21 05:15:09,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 1.1571072319201996) internal successors, (464), 401 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:09,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 464 transitions. [2023-12-21 05:15:09,274 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 464 transitions. Word has length 35 [2023-12-21 05:15:09,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:09,274 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 464 transitions. [2023-12-21 05:15:09,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 41 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:09,274 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 464 transitions. [2023-12-21 05:15:09,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 05:15:09,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:09,275 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:09,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-12-21 05:15:09,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:09,480 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:09,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:09,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2112286503, now seen corresponding path program 52 times [2023-12-21 05:15:09,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:09,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442232148] [2023-12-21 05:15:09,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:09,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:09,773 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:15:09,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:09,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442232148] [2023-12-21 05:15:09,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442232148] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:09,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477805127] [2023-12-21 05:15:09,774 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:15:09,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:09,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:09,775 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:09,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-12-21 05:15:09,831 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:15:09,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:09,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-21 05:15:09,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:09,924 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:15:09,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:15:10,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477805127] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:10,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:10,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 39 [2023-12-21 05:15:10,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279616012] [2023-12-21 05:15:10,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:10,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-21 05:15:10,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:10,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-21 05:15:10,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1385, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 05:15:10,206 INFO L87 Difference]: Start difference. First operand 402 states and 464 transitions. Second operand has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:10,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:10,849 INFO L93 Difference]: Finished difference Result 418 states and 479 transitions. [2023-12-21 05:15:10,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 05:15:10,849 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-21 05:15:10,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:10,850 INFO L225 Difference]: With dead ends: 418 [2023-12-21 05:15:10,850 INFO L226 Difference]: Without dead ends: 394 [2023-12-21 05:15:10,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=2393, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 05:15:10,851 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 64 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:10,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 878 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:15:10,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-12-21 05:15:11,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2023-12-21 05:15:11,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 1.1577608142493638) internal successors, (455), 393 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:11,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 455 transitions. [2023-12-21 05:15:11,058 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 455 transitions. Word has length 35 [2023-12-21 05:15:11,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:11,059 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 455 transitions. [2023-12-21 05:15:11,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:11,059 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 455 transitions. [2023-12-21 05:15:11,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 05:15:11,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:11,059 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:11,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2023-12-21 05:15:11,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:11,264 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:11,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:11,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1988186407, now seen corresponding path program 53 times [2023-12-21 05:15:11,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:11,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109906132] [2023-12-21 05:15:11,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:11,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:11,557 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:15:11,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:11,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109906132] [2023-12-21 05:15:11,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109906132] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:11,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714891018] [2023-12-21 05:15:11,557 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:15:11,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:11,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:11,558 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:11,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-12-21 05:15:11,612 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-21 05:15:11,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:11,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 05:15:11,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:11,733 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:15:11,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:11,954 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:15:11,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714891018] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:11,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:11,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 38 [2023-12-21 05:15:11,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467287232] [2023-12-21 05:15:11,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:11,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-21 05:15:11,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:11,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-21 05:15:11,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1306, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 05:15:11,956 INFO L87 Difference]: Start difference. First operand 394 states and 455 transitions. Second operand has 38 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 38 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:12,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:12,447 INFO L93 Difference]: Finished difference Result 409 states and 469 transitions. [2023-12-21 05:15:12,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 05:15:12,447 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 38 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-21 05:15:12,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:12,448 INFO L225 Difference]: With dead ends: 409 [2023-12-21 05:15:12,448 INFO L226 Difference]: Without dead ends: 384 [2023-12-21 05:15:12,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=2193, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 05:15:12,449 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 50 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:12,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 596 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:15:12,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-12-21 05:15:12,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2023-12-21 05:15:12,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 1.1592689295039165) internal successors, (444), 383 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:12,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 444 transitions. [2023-12-21 05:15:12,633 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 444 transitions. Word has length 35 [2023-12-21 05:15:12,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:12,633 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 444 transitions. [2023-12-21 05:15:12,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 38 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:12,633 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 444 transitions. [2023-12-21 05:15:12,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 05:15:12,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:12,634 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:12,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-12-21 05:15:12,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:12,838 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:12,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:12,839 INFO L85 PathProgramCache]: Analyzing trace with hash 915980382, now seen corresponding path program 54 times [2023-12-21 05:15:12,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:12,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616517616] [2023-12-21 05:15:12,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:12,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:12,947 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 05:15:12,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:12,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616517616] [2023-12-21 05:15:12,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616517616] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:12,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200619494] [2023-12-21 05:15:12,947 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:15:12,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:12,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:12,948 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:12,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-12-21 05:15:12,998 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-21 05:15:12,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:13,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 05:15:13,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 05:15:13,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:13,268 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 05:15:13,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200619494] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:13,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:13,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2023-12-21 05:15:13,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903435928] [2023-12-21 05:15:13,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:13,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 05:15:13,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:13,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 05:15:13,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2023-12-21 05:15:13,274 INFO L87 Difference]: Start difference. First operand 384 states and 444 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:13,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:13,919 INFO L93 Difference]: Finished difference Result 512 states and 588 transitions. [2023-12-21 05:15:13,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 05:15:13,919 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-21 05:15:13,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:13,920 INFO L225 Difference]: With dead ends: 512 [2023-12-21 05:15:13,920 INFO L226 Difference]: Without dead ends: 460 [2023-12-21 05:15:13,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=1802, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 05:15:13,921 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 221 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:13,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 414 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:15:13,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-12-21 05:15:14,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 420. [2023-12-21 05:15:14,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 1.1431980906921242) internal successors, (479), 419 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:14,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 479 transitions. [2023-12-21 05:15:14,143 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 479 transitions. Word has length 35 [2023-12-21 05:15:14,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:14,143 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 479 transitions. [2023-12-21 05:15:14,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:14,143 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 479 transitions. [2023-12-21 05:15:14,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 05:15:14,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:14,144 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:14,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-12-21 05:15:14,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:14,349 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:14,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:14,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1695635673, now seen corresponding path program 55 times [2023-12-21 05:15:14,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:14,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366439391] [2023-12-21 05:15:14,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:14,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:15:14,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:14,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366439391] [2023-12-21 05:15:14,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366439391] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:14,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517527850] [2023-12-21 05:15:14,545 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:15:14,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:14,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:14,546 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:14,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-12-21 05:15:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:14,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 05:15:14,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:14,822 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:15:14,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:15:14,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517527850] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:14,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:14,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 35 [2023-12-21 05:15:14,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611703423] [2023-12-21 05:15:14,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:14,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 05:15:14,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:14,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 05:15:14,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1094, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 05:15:14,896 INFO L87 Difference]: Start difference. First operand 420 states and 479 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:15,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:15,358 INFO L93 Difference]: Finished difference Result 453 states and 516 transitions. [2023-12-21 05:15:15,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 05:15:15,359 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-21 05:15:15,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:15,360 INFO L225 Difference]: With dead ends: 453 [2023-12-21 05:15:15,360 INFO L226 Difference]: Without dead ends: 427 [2023-12-21 05:15:15,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=1826, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 05:15:15,360 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 38 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:15,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 435 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:15:15,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-12-21 05:15:15,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 417. [2023-12-21 05:15:15,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.1466346153846154) internal successors, (477), 416 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:15,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 477 transitions. [2023-12-21 05:15:15,567 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 477 transitions. Word has length 35 [2023-12-21 05:15:15,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:15,567 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 477 transitions. [2023-12-21 05:15:15,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:15,567 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 477 transitions. [2023-12-21 05:15:15,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 05:15:15,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:15,567 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:15,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2023-12-21 05:15:15,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2023-12-21 05:15:15,769 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:15,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:15,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1914782398, now seen corresponding path program 56 times [2023-12-21 05:15:15,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:15,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955973115] [2023-12-21 05:15:15,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:15,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:15,911 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 05:15:15,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:15,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955973115] [2023-12-21 05:15:15,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955973115] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:15,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175638187] [2023-12-21 05:15:15,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:15:15,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:15,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:15,913 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:15,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-12-21 05:15:15,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:15:15,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:15,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 05:15:15,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:16,178 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 05:15:16,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 05:15:16,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175638187] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:16,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:16,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2023-12-21 05:15:16,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63452190] [2023-12-21 05:15:16,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:16,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 05:15:16,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:16,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 05:15:16,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2023-12-21 05:15:16,368 INFO L87 Difference]: Start difference. First operand 417 states and 477 transitions. Second operand has 30 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:16,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:16,996 INFO L93 Difference]: Finished difference Result 450 states and 509 transitions. [2023-12-21 05:15:16,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 05:15:16,996 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-21 05:15:16,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:16,997 INFO L225 Difference]: With dead ends: 450 [2023-12-21 05:15:16,997 INFO L226 Difference]: Without dead ends: 422 [2023-12-21 05:15:16,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=219, Invalid=1587, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 05:15:16,997 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 226 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:16,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 738 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:15:16,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-12-21 05:15:17,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 417. [2023-12-21 05:15:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.1274038461538463) internal successors, (469), 416 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:17,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 469 transitions. [2023-12-21 05:15:17,208 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 469 transitions. Word has length 35 [2023-12-21 05:15:17,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:17,209 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 469 transitions. [2023-12-21 05:15:17,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:17,209 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 469 transitions. [2023-12-21 05:15:17,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 05:15:17,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:17,209 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:17,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2023-12-21 05:15:17,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2023-12-21 05:15:17,414 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:17,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:17,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1792479309, now seen corresponding path program 57 times [2023-12-21 05:15:17,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:17,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666389387] [2023-12-21 05:15:17,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:17,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:15:17,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:17,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666389387] [2023-12-21 05:15:17,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666389387] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:17,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587788689] [2023-12-21 05:15:17,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:15:17,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:17,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:17,657 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:17,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-12-21 05:15:17,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-21 05:15:17,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:17,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 05:15:17,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:15:18,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:18,625 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:15:18,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587788689] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:18,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:18,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 49 [2023-12-21 05:15:18,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083859969] [2023-12-21 05:15:18,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:18,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-21 05:15:18,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:18,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-21 05:15:18,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2217, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 05:15:18,626 INFO L87 Difference]: Start difference. First operand 417 states and 469 transitions. Second operand has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:20,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:20,126 INFO L93 Difference]: Finished difference Result 701 states and 775 transitions. [2023-12-21 05:15:20,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 05:15:20,126 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 05:15:20,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:20,128 INFO L225 Difference]: With dead ends: 701 [2023-12-21 05:15:20,128 INFO L226 Difference]: Without dead ends: 661 [2023-12-21 05:15:20,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 36 SyntacticMatches, 8 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1000, Invalid=5480, Unknown=0, NotChecked=0, Total=6480 [2023-12-21 05:15:20,129 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 363 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:20,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 829 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:15:20,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-12-21 05:15:20,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 461. [2023-12-21 05:15:20,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.126086956521739) internal successors, (518), 460 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:20,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 518 transitions. [2023-12-21 05:15:20,375 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 518 transitions. Word has length 36 [2023-12-21 05:15:20,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:20,375 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 518 transitions. [2023-12-21 05:15:20,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:20,375 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 518 transitions. [2023-12-21 05:15:20,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 05:15:20,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:20,376 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:20,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2023-12-21 05:15:20,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2023-12-21 05:15:20,581 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:20,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:20,581 INFO L85 PathProgramCache]: Analyzing trace with hash -860912710, now seen corresponding path program 58 times [2023-12-21 05:15:20,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:20,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430032956] [2023-12-21 05:15:20,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:20,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:20,913 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:15:20,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:20,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430032956] [2023-12-21 05:15:20,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430032956] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:20,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895294233] [2023-12-21 05:15:20,914 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:15:20,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:20,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:20,915 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:20,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-12-21 05:15:20,958 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:15:20,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:20,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 05:15:20,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:15:21,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:21,961 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:15:21,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895294233] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:21,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:21,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 49 [2023-12-21 05:15:21,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579997897] [2023-12-21 05:15:21,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:21,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-21 05:15:21,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:21,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-21 05:15:21,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2218, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 05:15:21,962 INFO L87 Difference]: Start difference. First operand 461 states and 518 transitions. Second operand has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:23,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:23,543 INFO L93 Difference]: Finished difference Result 505 states and 567 transitions. [2023-12-21 05:15:23,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 05:15:23,543 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 05:15:23,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:23,544 INFO L225 Difference]: With dead ends: 505 [2023-12-21 05:15:23,544 INFO L226 Difference]: Without dead ends: 485 [2023-12-21 05:15:23,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 35 SyntacticMatches, 9 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=477, Invalid=4779, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 05:15:23,545 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 434 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:23,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1378 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 05:15:23,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2023-12-21 05:15:23,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 466. [2023-12-21 05:15:23,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 1.124731182795699) internal successors, (523), 465 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:23,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 523 transitions. [2023-12-21 05:15:23,796 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 523 transitions. Word has length 36 [2023-12-21 05:15:23,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:23,796 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 523 transitions. [2023-12-21 05:15:23,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:23,796 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 523 transitions. [2023-12-21 05:15:23,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 05:15:23,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:23,797 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:23,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2023-12-21 05:15:24,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:24,000 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:24,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:24,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1653966574, now seen corresponding path program 59 times [2023-12-21 05:15:24,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:24,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512307042] [2023-12-21 05:15:24,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:24,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:24,098 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 05:15:24,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:24,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512307042] [2023-12-21 05:15:24,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512307042] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:24,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192929299] [2023-12-21 05:15:24,099 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:15:24,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:24,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:24,100 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:24,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-12-21 05:15:24,144 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-21 05:15:24,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:24,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 05:15:24,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:24,225 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 05:15:24,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 05:15:24,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192929299] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:24,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:24,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2023-12-21 05:15:24,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572508933] [2023-12-21 05:15:24,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:24,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 05:15:24,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:24,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 05:15:24,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2023-12-21 05:15:24,286 INFO L87 Difference]: Start difference. First operand 466 states and 523 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:24,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:24,657 INFO L93 Difference]: Finished difference Result 552 states and 624 transitions. [2023-12-21 05:15:24,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 05:15:24,657 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 05:15:24,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:24,658 INFO L225 Difference]: With dead ends: 552 [2023-12-21 05:15:24,658 INFO L226 Difference]: Without dead ends: 454 [2023-12-21 05:15:24,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 55 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=304, Invalid=566, Unknown=0, NotChecked=0, Total=870 [2023-12-21 05:15:24,660 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 44 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:24,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 137 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:15:24,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-12-21 05:15:24,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2023-12-21 05:15:24,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.119205298013245) internal successors, (507), 453 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:24,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 507 transitions. [2023-12-21 05:15:24,907 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 507 transitions. Word has length 36 [2023-12-21 05:15:24,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:24,907 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 507 transitions. [2023-12-21 05:15:24,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 507 transitions. [2023-12-21 05:15:24,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 05:15:24,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:24,908 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:24,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2023-12-21 05:15:25,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:25,112 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:25,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:25,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1984619611, now seen corresponding path program 60 times [2023-12-21 05:15:25,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:25,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576654383] [2023-12-21 05:15:25,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:25,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:25,199 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 05:15:25,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:25,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576654383] [2023-12-21 05:15:25,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576654383] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:25,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065687260] [2023-12-21 05:15:25,199 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:15:25,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:25,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:25,201 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:25,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-12-21 05:15:25,253 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-21 05:15:25,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:25,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 05:15:25,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 05:15:25,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:25,386 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 05:15:25,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065687260] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:25,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:25,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2023-12-21 05:15:25,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038267434] [2023-12-21 05:15:25,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:25,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 05:15:25,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:25,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 05:15:25,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2023-12-21 05:15:25,387 INFO L87 Difference]: Start difference. First operand 454 states and 507 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:25,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:25,769 INFO L93 Difference]: Finished difference Result 473 states and 526 transitions. [2023-12-21 05:15:25,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 05:15:25,769 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 05:15:25,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:25,770 INFO L225 Difference]: With dead ends: 473 [2023-12-21 05:15:25,770 INFO L226 Difference]: Without dead ends: 468 [2023-12-21 05:15:25,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 55 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=304, Invalid=566, Unknown=0, NotChecked=0, Total=870 [2023-12-21 05:15:25,771 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 44 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:25,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 145 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:15:25,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-12-21 05:15:26,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 455. [2023-12-21 05:15:26,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.118942731277533) internal successors, (508), 454 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:26,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 508 transitions. [2023-12-21 05:15:26,030 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 508 transitions. Word has length 36 [2023-12-21 05:15:26,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:26,030 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 508 transitions. [2023-12-21 05:15:26,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:26,030 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 508 transitions. [2023-12-21 05:15:26,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 05:15:26,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:26,031 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:26,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2023-12-21 05:15:26,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-12-21 05:15:26,237 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:26,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:26,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1473765492, now seen corresponding path program 61 times [2023-12-21 05:15:26,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:26,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455636838] [2023-12-21 05:15:26,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:26,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:15:26,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:26,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455636838] [2023-12-21 05:15:26,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455636838] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:26,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078862632] [2023-12-21 05:15:26,606 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:15:26,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:26,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:26,607 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:26,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-12-21 05:15:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:26,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-21 05:15:26,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:15:27,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:27,108 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:15:27,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078862632] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:27,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:27,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 44 [2023-12-21 05:15:27,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140108364] [2023-12-21 05:15:27,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:27,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 05:15:27,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:27,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 05:15:27,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1786, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 05:15:27,109 INFO L87 Difference]: Start difference. First operand 455 states and 508 transitions. Second operand has 44 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:27,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:27,966 INFO L93 Difference]: Finished difference Result 510 states and 569 transitions. [2023-12-21 05:15:27,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 05:15:27,966 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-21 05:15:27,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:27,968 INFO L225 Difference]: With dead ends: 510 [2023-12-21 05:15:27,968 INFO L226 Difference]: Without dead ends: 502 [2023-12-21 05:15:27,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=3135, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 05:15:27,968 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 91 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:27,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1264 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1487 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:15:27,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2023-12-21 05:15:28,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 463. [2023-12-21 05:15:28,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.119047619047619) internal successors, (517), 462 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:28,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 517 transitions. [2023-12-21 05:15:28,225 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 517 transitions. Word has length 37 [2023-12-21 05:15:28,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:28,225 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 517 transitions. [2023-12-21 05:15:28,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:28,225 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 517 transitions. [2023-12-21 05:15:28,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 05:15:28,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:28,226 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:28,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2023-12-21 05:15:28,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:28,430 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:28,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:28,431 INFO L85 PathProgramCache]: Analyzing trace with hash -852229904, now seen corresponding path program 62 times [2023-12-21 05:15:28,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:28,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067725000] [2023-12-21 05:15:28,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:28,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:15:28,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:28,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067725000] [2023-12-21 05:15:28,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067725000] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:28,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793580773] [2023-12-21 05:15:28,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:15:28,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:28,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:28,785 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:28,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-12-21 05:15:28,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:15:28,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:28,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-21 05:15:28,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:15:29,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:29,226 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:15:29,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793580773] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:29,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:29,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 42 [2023-12-21 05:15:29,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566185034] [2023-12-21 05:15:29,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:29,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-21 05:15:29,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:29,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-21 05:15:29,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1617, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 05:15:29,227 INFO L87 Difference]: Start difference. First operand 463 states and 517 transitions. Second operand has 42 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 42 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:29,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:29,889 INFO L93 Difference]: Finished difference Result 480 states and 533 transitions. [2023-12-21 05:15:29,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 05:15:29,889 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 42 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-21 05:15:29,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:29,890 INFO L225 Difference]: With dead ends: 480 [2023-12-21 05:15:29,890 INFO L226 Difference]: Without dead ends: 455 [2023-12-21 05:15:29,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=169, Invalid=2801, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 05:15:29,891 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 72 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:29,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 931 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:15:29,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-12-21 05:15:30,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2023-12-21 05:15:30,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.118942731277533) internal successors, (508), 454 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:30,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 508 transitions. [2023-12-21 05:15:30,143 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 508 transitions. Word has length 37 [2023-12-21 05:15:30,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:30,143 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 508 transitions. [2023-12-21 05:15:30,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 42 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:30,143 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 508 transitions. [2023-12-21 05:15:30,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 05:15:30,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:30,144 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:30,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2023-12-21 05:15:30,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:30,349 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:30,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:30,349 INFO L85 PathProgramCache]: Analyzing trace with hash 885730188, now seen corresponding path program 63 times [2023-12-21 05:15:30,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:30,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281604518] [2023-12-21 05:15:30,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:30,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:30,611 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:15:30,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:30,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281604518] [2023-12-21 05:15:30,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281604518] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:30,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842012936] [2023-12-21 05:15:30,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:15:30,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:30,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:30,613 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:30,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-12-21 05:15:30,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 05:15:30,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:30,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-21 05:15:30,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:15:30,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:15:31,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842012936] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:31,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:31,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 40 [2023-12-21 05:15:31,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908330752] [2023-12-21 05:15:31,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:31,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-21 05:15:31,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:31,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-21 05:15:31,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1456, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 05:15:31,060 INFO L87 Difference]: Start difference. First operand 455 states and 508 transitions. Second operand has 40 states, 40 states have (on average 1.45) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:31,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:31,640 INFO L93 Difference]: Finished difference Result 471 states and 523 transitions. [2023-12-21 05:15:31,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 05:15:31,641 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.45) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-21 05:15:31,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:31,642 INFO L225 Difference]: With dead ends: 471 [2023-12-21 05:15:31,642 INFO L226 Difference]: Without dead ends: 445 [2023-12-21 05:15:31,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=2485, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 05:15:31,642 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 55 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:31,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 832 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:15:31,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-12-21 05:15:31,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2023-12-21 05:15:31,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.1193693693693694) internal successors, (497), 444 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:31,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 497 transitions. [2023-12-21 05:15:31,893 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 497 transitions. Word has length 37 [2023-12-21 05:15:31,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:31,893 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 497 transitions. [2023-12-21 05:15:31,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.45) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:31,893 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 497 transitions. [2023-12-21 05:15:31,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 05:15:31,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:31,894 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:31,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2023-12-21 05:15:32,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2023-12-21 05:15:32,098 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:32,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:32,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1826129136, now seen corresponding path program 64 times [2023-12-21 05:15:32,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:32,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988349318] [2023-12-21 05:15:32,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:32,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:15:32,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:32,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988349318] [2023-12-21 05:15:32,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988349318] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:32,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776586940] [2023-12-21 05:15:32,340 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:15:32,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:32,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:32,341 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:32,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-12-21 05:15:32,384 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:15:32,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:32,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 05:15:32,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:32,535 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:15:32,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:15:32,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776586940] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:32,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:32,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 40 [2023-12-21 05:15:32,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800483625] [2023-12-21 05:15:32,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:32,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-21 05:15:32,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:32,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-21 05:15:32,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1450, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 05:15:32,742 INFO L87 Difference]: Start difference. First operand 445 states and 497 transitions. Second operand has 40 states, 40 states have (on average 1.45) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:33,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:33,351 INFO L93 Difference]: Finished difference Result 460 states and 511 transitions. [2023-12-21 05:15:33,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 05:15:33,352 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.45) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-21 05:15:33,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:33,353 INFO L225 Difference]: With dead ends: 460 [2023-12-21 05:15:33,353 INFO L226 Difference]: Without dead ends: 433 [2023-12-21 05:15:33,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=2378, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 05:15:33,353 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 39 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:33,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 616 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:15:33,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-12-21 05:15:33,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2023-12-21 05:15:33,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 1.1203703703703705) internal successors, (484), 432 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:33,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 484 transitions. [2023-12-21 05:15:33,598 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 484 transitions. Word has length 37 [2023-12-21 05:15:33,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:33,598 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 484 transitions. [2023-12-21 05:15:33,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.45) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:33,598 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 484 transitions. [2023-12-21 05:15:33,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 05:15:33,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:33,599 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:33,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2023-12-21 05:15:33,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:33,803 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:33,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:33,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1422858124, now seen corresponding path program 65 times [2023-12-21 05:15:33,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:33,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399669017] [2023-12-21 05:15:33,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:33,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:34,081 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:15:34,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:34,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399669017] [2023-12-21 05:15:34,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399669017] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:34,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44880686] [2023-12-21 05:15:34,081 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:15:34,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:34,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:34,082 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:34,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-12-21 05:15:34,154 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-21 05:15:34,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:34,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-21 05:15:34,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:34,411 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 05:15:34,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:34,500 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:15:34,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44880686] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:34,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:34,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 20] total 41 [2023-12-21 05:15:34,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363352486] [2023-12-21 05:15:34,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:34,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-21 05:15:34,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:34,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-21 05:15:34,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1523, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 05:15:34,501 INFO L87 Difference]: Start difference. First operand 433 states and 484 transitions. Second operand has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 41 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:35,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:35,185 INFO L93 Difference]: Finished difference Result 457 states and 511 transitions. [2023-12-21 05:15:35,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 05:15:35,185 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 41 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-21 05:15:35,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:35,186 INFO L225 Difference]: With dead ends: 457 [2023-12-21 05:15:35,186 INFO L226 Difference]: Without dead ends: 452 [2023-12-21 05:15:35,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=208, Invalid=2872, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 05:15:35,188 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 40 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:35,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 477 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:15:35,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2023-12-21 05:15:35,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 445. [2023-12-21 05:15:35,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.1216216216216217) internal successors, (498), 444 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:35,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 498 transitions. [2023-12-21 05:15:35,435 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 498 transitions. Word has length 37 [2023-12-21 05:15:35,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:35,435 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 498 transitions. [2023-12-21 05:15:35,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 41 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:35,435 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 498 transitions. [2023-12-21 05:15:35,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 05:15:35,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:35,436 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:35,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2023-12-21 05:15:35,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2023-12-21 05:15:35,641 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:35,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:35,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1002634746, now seen corresponding path program 66 times [2023-12-21 05:15:35,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:35,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027853212] [2023-12-21 05:15:35,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:35,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:15:35,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:35,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027853212] [2023-12-21 05:15:35,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027853212] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:35,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634653550] [2023-12-21 05:15:35,940 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:15:35,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:35,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:35,941 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:35,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-12-21 05:15:35,992 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-12-21 05:15:35,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:35,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 05:15:35,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:15:36,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:37,171 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:15:37,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634653550] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:37,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:37,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 54 [2023-12-21 05:15:37,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818189848] [2023-12-21 05:15:37,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:37,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-21 05:15:37,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:37,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-21 05:15:37,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2713, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 05:15:37,173 INFO L87 Difference]: Start difference. First operand 445 states and 498 transitions. Second operand has 54 states, 54 states have (on average 1.5) internal successors, (81), 54 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:38,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:38,864 INFO L93 Difference]: Finished difference Result 762 states and 838 transitions. [2023-12-21 05:15:38,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 05:15:38,864 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.5) internal successors, (81), 54 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-21 05:15:38,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:38,866 INFO L225 Difference]: With dead ends: 762 [2023-12-21 05:15:38,866 INFO L226 Difference]: Without dead ends: 720 [2023-12-21 05:15:38,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 36 SyntacticMatches, 9 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1221, Invalid=6789, Unknown=0, NotChecked=0, Total=8010 [2023-12-21 05:15:38,866 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 380 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:38,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 989 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:15:38,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2023-12-21 05:15:39,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 490. [2023-12-21 05:15:39,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.1206543967280163) internal successors, (548), 489 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:39,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 548 transitions. [2023-12-21 05:15:39,157 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 548 transitions. Word has length 38 [2023-12-21 05:15:39,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:39,157 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 548 transitions. [2023-12-21 05:15:39,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.5) internal successors, (81), 54 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:39,157 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 548 transitions. [2023-12-21 05:15:39,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 05:15:39,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:39,158 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:39,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2023-12-21 05:15:39,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2023-12-21 05:15:39,363 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:39,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:39,363 INFO L85 PathProgramCache]: Analyzing trace with hash 351860781, now seen corresponding path program 67 times [2023-12-21 05:15:39,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:39,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783713919] [2023-12-21 05:15:39,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:39,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:39,589 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:15:39,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:39,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783713919] [2023-12-21 05:15:39,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783713919] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:39,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143856619] [2023-12-21 05:15:39,589 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:15:39,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:39,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:39,591 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:39,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-12-21 05:15:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:39,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 05:15:39,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:40,169 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:15:40,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:40,659 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:15:40,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143856619] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:40,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:40,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 54 [2023-12-21 05:15:40,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127292839] [2023-12-21 05:15:40,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:40,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-21 05:15:40,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:40,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-21 05:15:40,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2714, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 05:15:40,660 INFO L87 Difference]: Start difference. First operand 490 states and 548 transitions. Second operand has 54 states, 54 states have (on average 1.5) internal successors, (81), 54 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:42,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:42,524 INFO L93 Difference]: Finished difference Result 536 states and 599 transitions. [2023-12-21 05:15:42,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 05:15:42,528 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.5) internal successors, (81), 54 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-21 05:15:42,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:42,529 INFO L225 Difference]: With dead ends: 536 [2023-12-21 05:15:42,529 INFO L226 Difference]: Without dead ends: 515 [2023-12-21 05:15:42,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 35 SyntacticMatches, 10 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=561, Invalid=5919, Unknown=0, NotChecked=0, Total=6480 [2023-12-21 05:15:42,530 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 416 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:42,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 1716 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 05:15:42,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-12-21 05:15:42,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 495. [2023-12-21 05:15:42,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.1194331983805668) internal successors, (553), 494 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:42,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 553 transitions. [2023-12-21 05:15:42,830 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 553 transitions. Word has length 38 [2023-12-21 05:15:42,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:42,830 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 553 transitions. [2023-12-21 05:15:42,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.5) internal successors, (81), 54 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:42,830 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 553 transitions. [2023-12-21 05:15:42,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 05:15:42,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:42,831 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:42,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2023-12-21 05:15:43,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:43,036 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:43,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:43,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1188121211, now seen corresponding path program 68 times [2023-12-21 05:15:43,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:43,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16945978] [2023-12-21 05:15:43,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:43,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 05:15:43,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:43,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16945978] [2023-12-21 05:15:43,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16945978] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:43,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262574843] [2023-12-21 05:15:43,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:15:43,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:43,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:43,179 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:43,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2023-12-21 05:15:43,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:15:43,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:43,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 05:15:43,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:43,336 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 05:15:43,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:43,397 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 05:15:43,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262574843] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:43,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:43,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2023-12-21 05:15:43,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589145572] [2023-12-21 05:15:43,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:43,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 05:15:43,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:43,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 05:15:43,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2023-12-21 05:15:43,398 INFO L87 Difference]: Start difference. First operand 495 states and 553 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:43,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:43,864 INFO L93 Difference]: Finished difference Result 563 states and 634 transitions. [2023-12-21 05:15:43,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 05:15:43,864 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-21 05:15:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:43,865 INFO L225 Difference]: With dead ends: 563 [2023-12-21 05:15:43,865 INFO L226 Difference]: Without dead ends: 548 [2023-12-21 05:15:43,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 05:15:43,866 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 75 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:43,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 101 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:15:43,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-12-21 05:15:44,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 529. [2023-12-21 05:15:44,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 528 states have (on average 1.1325757575757576) internal successors, (598), 528 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:44,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 598 transitions. [2023-12-21 05:15:44,196 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 598 transitions. Word has length 38 [2023-12-21 05:15:44,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:44,196 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 598 transitions. [2023-12-21 05:15:44,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:44,196 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 598 transitions. [2023-12-21 05:15:44,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 05:15:44,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:44,197 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:44,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2023-12-21 05:15:44,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:44,401 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:44,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:44,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1446536530, now seen corresponding path program 69 times [2023-12-21 05:15:44,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:44,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219613059] [2023-12-21 05:15:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:44,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:44,467 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 05:15:44,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:44,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219613059] [2023-12-21 05:15:44,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219613059] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:44,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949016928] [2023-12-21 05:15:44,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:15:44,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:44,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:44,468 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:44,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-12-21 05:15:44,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 05:15:44,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:44,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 05:15:44,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 05:15:44,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:44,616 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 05:15:44,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949016928] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:44,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:44,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2023-12-21 05:15:44,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078034798] [2023-12-21 05:15:44,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:44,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 05:15:44,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:44,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 05:15:44,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2023-12-21 05:15:44,617 INFO L87 Difference]: Start difference. First operand 529 states and 598 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:45,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:45,145 INFO L93 Difference]: Finished difference Result 772 states and 894 transitions. [2023-12-21 05:15:45,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 05:15:45,146 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-21 05:15:45,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:45,147 INFO L225 Difference]: With dead ends: 772 [2023-12-21 05:15:45,147 INFO L226 Difference]: Without dead ends: 621 [2023-12-21 05:15:45,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 05:15:45,148 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 45 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:45,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 218 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:15:45,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2023-12-21 05:15:45,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 611. [2023-12-21 05:15:45,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 1.1327868852459015) internal successors, (691), 610 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 691 transitions. [2023-12-21 05:15:45,556 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 691 transitions. Word has length 38 [2023-12-21 05:15:45,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:45,556 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 691 transitions. [2023-12-21 05:15:45,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:45,557 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 691 transitions. [2023-12-21 05:15:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 05:15:45,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:45,557 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:45,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2023-12-21 05:15:45,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2023-12-21 05:15:45,762 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:45,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:45,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1762474361, now seen corresponding path program 70 times [2023-12-21 05:15:45,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:45,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066772343] [2023-12-21 05:15:45,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:45,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:46,063 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:15:46,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:46,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066772343] [2023-12-21 05:15:46,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066772343] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:46,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326708994] [2023-12-21 05:15:46,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:15:46,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:46,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:46,065 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:46,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-12-21 05:15:46,109 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:15:46,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:46,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 05:15:46,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:46,349 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:15:46,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:46,450 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:15:46,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326708994] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:46,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:46,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 47 [2023-12-21 05:15:46,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552617557] [2023-12-21 05:15:46,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:46,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-21 05:15:46,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:46,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-21 05:15:46,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=2049, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 05:15:46,452 INFO L87 Difference]: Start difference. First operand 611 states and 691 transitions. Second operand has 47 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:47,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:47,587 INFO L93 Difference]: Finished difference Result 675 states and 762 transitions. [2023-12-21 05:15:47,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 05:15:47,587 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-21 05:15:47,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:47,589 INFO L225 Difference]: With dead ends: 675 [2023-12-21 05:15:47,589 INFO L226 Difference]: Without dead ends: 667 [2023-12-21 05:15:47,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=182, Invalid=3600, Unknown=0, NotChecked=0, Total=3782 [2023-12-21 05:15:47,590 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 100 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:47,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1562 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1812 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 05:15:47,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-12-21 05:15:48,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 619. [2023-12-21 05:15:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 618 states have (on average 1.132686084142395) internal successors, (700), 618 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:48,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 700 transitions. [2023-12-21 05:15:48,010 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 700 transitions. Word has length 39 [2023-12-21 05:15:48,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:48,011 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 700 transitions. [2023-12-21 05:15:48,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:48,011 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 700 transitions. [2023-12-21 05:15:48,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 05:15:48,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:48,011 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:48,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2023-12-21 05:15:48,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2023-12-21 05:15:48,216 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:48,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:48,216 INFO L85 PathProgramCache]: Analyzing trace with hash -859199623, now seen corresponding path program 71 times [2023-12-21 05:15:48,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:48,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917910621] [2023-12-21 05:15:48,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:48,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:15:48,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:48,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917910621] [2023-12-21 05:15:48,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917910621] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:48,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517036475] [2023-12-21 05:15:48,579 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:15:48,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:48,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:48,580 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:48,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-12-21 05:15:48,624 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-21 05:15:48,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:48,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-21 05:15:48,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:15:48,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:49,035 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:15:49,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517036475] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:49,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:49,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 45 [2023-12-21 05:15:49,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912676437] [2023-12-21 05:15:49,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:49,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-21 05:15:49,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:49,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-21 05:15:49,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1869, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 05:15:49,037 INFO L87 Difference]: Start difference. First operand 619 states and 700 transitions. Second operand has 45 states, 45 states have (on average 1.4) internal successors, (63), 45 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:50,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:50,043 INFO L93 Difference]: Finished difference Result 637 states and 717 transitions. [2023-12-21 05:15:50,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 05:15:50,044 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.4) internal successors, (63), 45 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-21 05:15:50,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:50,045 INFO L225 Difference]: With dead ends: 637 [2023-12-21 05:15:50,045 INFO L226 Difference]: Without dead ends: 611 [2023-12-21 05:15:50,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=179, Invalid=3243, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 05:15:50,046 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 78 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:50,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1290 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:15:50,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2023-12-21 05:15:50,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2023-12-21 05:15:50,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 1.1327868852459015) internal successors, (691), 610 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:50,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 691 transitions. [2023-12-21 05:15:50,465 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 691 transitions. Word has length 39 [2023-12-21 05:15:50,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:50,465 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 691 transitions. [2023-12-21 05:15:50,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.4) internal successors, (63), 45 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:50,465 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 691 transitions. [2023-12-21 05:15:50,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 05:15:50,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:50,466 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:50,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2023-12-21 05:15:50,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:50,671 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:50,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:50,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1719435641, now seen corresponding path program 72 times [2023-12-21 05:15:50,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:50,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982035139] [2023-12-21 05:15:50,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:50,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:50,969 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:15:50,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:50,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982035139] [2023-12-21 05:15:50,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982035139] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:50,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201806721] [2023-12-21 05:15:50,970 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:15:50,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:50,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:50,971 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:50,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-12-21 05:15:51,016 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-21 05:15:51,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:51,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-21 05:15:51,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:15:51,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:51,411 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:15:51,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201806721] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:51,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:51,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 43 [2023-12-21 05:15:51,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305130671] [2023-12-21 05:15:51,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:51,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-21 05:15:51,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:51,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-21 05:15:51,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1695, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 05:15:51,413 INFO L87 Difference]: Start difference. First operand 611 states and 691 transitions. Second operand has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:52,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:52,274 INFO L93 Difference]: Finished difference Result 628 states and 707 transitions. [2023-12-21 05:15:52,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 05:15:52,274 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-21 05:15:52,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:52,276 INFO L225 Difference]: With dead ends: 628 [2023-12-21 05:15:52,276 INFO L226 Difference]: Without dead ends: 601 [2023-12-21 05:15:52,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=2902, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 05:15:52,276 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 64 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:52,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1066 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:15:52,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2023-12-21 05:15:52,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2023-12-21 05:15:52,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 600 states have (on average 1.1333333333333333) internal successors, (680), 600 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:52,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 680 transitions. [2023-12-21 05:15:52,653 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 680 transitions. Word has length 39 [2023-12-21 05:15:52,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:52,654 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 680 transitions. [2023-12-21 05:15:52,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:52,654 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 680 transitions. [2023-12-21 05:15:52,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 05:15:52,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:52,655 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:52,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2023-12-21 05:15:52,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:52,859 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:52,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:52,860 INFO L85 PathProgramCache]: Analyzing trace with hash -151888007, now seen corresponding path program 73 times [2023-12-21 05:15:52,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:52,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830714000] [2023-12-21 05:15:52,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:52,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:53,170 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:15:53,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:53,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830714000] [2023-12-21 05:15:53,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830714000] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:53,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332794004] [2023-12-21 05:15:53,171 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:15:53,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:53,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:53,172 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:53,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2023-12-21 05:15:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:53,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-21 05:15:53,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:15:53,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:15:53,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332794004] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:53,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:53,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 43 [2023-12-21 05:15:53,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576085389] [2023-12-21 05:15:53,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:53,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-21 05:15:53,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:53,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-21 05:15:53,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1689, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 05:15:53,709 INFO L87 Difference]: Start difference. First operand 601 states and 680 transitions. Second operand has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:54,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:54,495 INFO L93 Difference]: Finished difference Result 617 states and 695 transitions. [2023-12-21 05:15:54,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 05:15:54,496 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-21 05:15:54,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:54,497 INFO L225 Difference]: With dead ends: 617 [2023-12-21 05:15:54,497 INFO L226 Difference]: Without dead ends: 589 [2023-12-21 05:15:54,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=2787, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 05:15:54,498 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 48 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:54,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 717 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:15:54,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2023-12-21 05:15:54,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2023-12-21 05:15:54,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 588 states have (on average 1.1343537414965987) internal successors, (667), 588 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:54,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 667 transitions. [2023-12-21 05:15:54,866 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 667 transitions. Word has length 39 [2023-12-21 05:15:54,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:54,867 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 667 transitions. [2023-12-21 05:15:54,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:54,867 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 667 transitions. [2023-12-21 05:15:54,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 05:15:54,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:54,867 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:54,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2023-12-21 05:15:55,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2023-12-21 05:15:55,072 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:55,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:55,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1350604866, now seen corresponding path program 74 times [2023-12-21 05:15:55,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:55,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955583283] [2023-12-21 05:15:55,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:55,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 05:15:55,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:55,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955583283] [2023-12-21 05:15:55,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955583283] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:55,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455894409] [2023-12-21 05:15:55,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:15:55,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:55,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:55,241 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:55,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2023-12-21 05:15:55,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:15:55,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:55,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 05:15:55,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:55,527 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 05:15:55,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 05:15:55,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455894409] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:55,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:55,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 35 [2023-12-21 05:15:55,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428203105] [2023-12-21 05:15:55,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:55,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 05:15:55,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:55,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 05:15:55,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1089, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 05:15:55,740 INFO L87 Difference]: Start difference. First operand 589 states and 667 transitions. Second operand has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 35 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:56,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:56,728 INFO L93 Difference]: Finished difference Result 757 states and 855 transitions. [2023-12-21 05:15:56,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 05:15:56,744 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 35 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-21 05:15:56,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:56,746 INFO L225 Difference]: With dead ends: 757 [2023-12-21 05:15:56,746 INFO L226 Difference]: Without dead ends: 696 [2023-12-21 05:15:56,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=497, Invalid=2583, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 05:15:56,747 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 403 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:56,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 479 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:15:56,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-12-21 05:15:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 645. [2023-12-21 05:15:57,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 1.1211180124223603) internal successors, (722), 644 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:57,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 722 transitions. [2023-12-21 05:15:57,143 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 722 transitions. Word has length 39 [2023-12-21 05:15:57,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:57,143 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 722 transitions. [2023-12-21 05:15:57,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 35 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:57,143 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 722 transitions. [2023-12-21 05:15:57,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 05:15:57,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:57,144 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:57,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2023-12-21 05:15:57,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:57,349 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:57,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:57,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1780758151, now seen corresponding path program 75 times [2023-12-21 05:15:57,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:57,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845686505] [2023-12-21 05:15:57,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:57,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:57,544 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:15:57,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:57,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845686505] [2023-12-21 05:15:57,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845686505] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:57,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029608592] [2023-12-21 05:15:57,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:15:57,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:57,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:57,545 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:57,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2023-12-21 05:15:57,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 05:15:57,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:57,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 05:15:57,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:15:57,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:57,862 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:15:57,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029608592] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:57,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:57,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 39 [2023-12-21 05:15:57,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509712587] [2023-12-21 05:15:57,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:57,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-21 05:15:57,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:57,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-21 05:15:57,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1373, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 05:15:57,863 INFO L87 Difference]: Start difference. First operand 645 states and 722 transitions. Second operand has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:58,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:15:58,545 INFO L93 Difference]: Finished difference Result 681 states and 762 transitions. [2023-12-21 05:15:58,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 05:15:58,545 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-21 05:15:58,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:15:58,547 INFO L225 Difference]: With dead ends: 681 [2023-12-21 05:15:58,547 INFO L226 Difference]: Without dead ends: 652 [2023-12-21 05:15:58,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=174, Invalid=2276, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 05:15:58,547 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 39 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:15:58,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 500 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:15:58,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2023-12-21 05:15:58,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 641. [2023-12-21 05:15:58,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 1.1234375) internal successors, (719), 640 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:58,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 719 transitions. [2023-12-21 05:15:58,952 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 719 transitions. Word has length 39 [2023-12-21 05:15:58,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:15:58,952 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 719 transitions. [2023-12-21 05:15:58,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:15:58,953 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 719 transitions. [2023-12-21 05:15:58,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 05:15:58,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:15:58,954 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:15:58,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2023-12-21 05:15:59,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:59,159 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:15:59,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:15:59,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2037478882, now seen corresponding path program 76 times [2023-12-21 05:15:59,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:15:59,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256687860] [2023-12-21 05:15:59,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:15:59,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:15:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:15:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 05:15:59,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:15:59,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256687860] [2023-12-21 05:15:59,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256687860] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:15:59,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694097723] [2023-12-21 05:15:59,378 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:15:59,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:15:59,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:15:59,379 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:15:59,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2023-12-21 05:15:59,425 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:15:59,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:15:59,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 05:15:59,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:15:59,692 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 05:15:59,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:15:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 05:15:59,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694097723] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:15:59,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:15:59,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 35 [2023-12-21 05:15:59,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32383745] [2023-12-21 05:15:59,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:15:59,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 05:15:59,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:15:59,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 05:15:59,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1089, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 05:15:59,933 INFO L87 Difference]: Start difference. First operand 641 states and 719 transitions. Second operand has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:00,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:00,973 INFO L93 Difference]: Finished difference Result 679 states and 756 transitions. [2023-12-21 05:16:00,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 05:16:00,974 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-21 05:16:00,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:00,976 INFO L225 Difference]: With dead ends: 679 [2023-12-21 05:16:00,976 INFO L226 Difference]: Without dead ends: 646 [2023-12-21 05:16:00,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=281, Invalid=2269, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 05:16:00,976 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 258 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:00,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 843 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:16:00,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2023-12-21 05:16:01,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 641. [2023-12-21 05:16:01,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 1.1078125) internal successors, (709), 640 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:01,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 709 transitions. [2023-12-21 05:16:01,396 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 709 transitions. Word has length 39 [2023-12-21 05:16:01,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:01,396 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 709 transitions. [2023-12-21 05:16:01,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:01,396 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 709 transitions. [2023-12-21 05:16:01,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 05:16:01,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:01,397 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:01,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2023-12-21 05:16:01,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:01,602 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:01,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:01,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1753144915, now seen corresponding path program 77 times [2023-12-21 05:16:01,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:01,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979259364] [2023-12-21 05:16:01,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:01,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:16:01,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:01,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979259364] [2023-12-21 05:16:01,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979259364] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:01,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803447117] [2023-12-21 05:16:01,934 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:16:01,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:01,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:01,935 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:16:01,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2023-12-21 05:16:01,980 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-12-21 05:16:01,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:01,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 05:16:01,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:16:02,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:16:03,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803447117] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:03,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:03,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 59 [2023-12-21 05:16:03,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5376205] [2023-12-21 05:16:03,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:03,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-21 05:16:03,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:03,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-21 05:16:03,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=3259, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 05:16:03,146 INFO L87 Difference]: Start difference. First operand 641 states and 709 transitions. Second operand has 59 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 59 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:05,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:05,646 INFO L93 Difference]: Finished difference Result 1085 states and 1180 transitions. [2023-12-21 05:16:05,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-21 05:16:05,647 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 59 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-21 05:16:05,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:05,649 INFO L225 Difference]: With dead ends: 1085 [2023-12-21 05:16:05,649 INFO L226 Difference]: Without dead ends: 1039 [2023-12-21 05:16:05,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 36 SyntacticMatches, 10 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1331 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1464, Invalid=8238, Unknown=0, NotChecked=0, Total=9702 [2023-12-21 05:16:05,650 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 446 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:05,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 1083 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:16:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2023-12-21 05:16:06,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 703. [2023-12-21 05:16:06,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 702 states have (on average 1.106837606837607) internal successors, (777), 702 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 777 transitions. [2023-12-21 05:16:06,121 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 777 transitions. Word has length 40 [2023-12-21 05:16:06,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:06,121 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 777 transitions. [2023-12-21 05:16:06,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 59 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:06,121 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 777 transitions. [2023-12-21 05:16:06,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 05:16:06,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:06,122 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:06,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2023-12-21 05:16:06,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2023-12-21 05:16:06,327 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:06,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:06,327 INFO L85 PathProgramCache]: Analyzing trace with hash -452301350, now seen corresponding path program 78 times [2023-12-21 05:16:06,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:06,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172170234] [2023-12-21 05:16:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:06,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:16:06,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:06,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172170234] [2023-12-21 05:16:06,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172170234] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:06,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069282443] [2023-12-21 05:16:06,613 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:16:06,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:06,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:06,614 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:16:06,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2023-12-21 05:16:06,661 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-21 05:16:06,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:06,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 05:16:06,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:16:07,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:07,754 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:16:07,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069282443] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:07,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:07,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 59 [2023-12-21 05:16:07,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752828101] [2023-12-21 05:16:07,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:07,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-21 05:16:07,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:07,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-21 05:16:07,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=3260, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 05:16:07,755 INFO L87 Difference]: Start difference. First operand 703 states and 777 transitions. Second operand has 59 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 59 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:10,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:10,192 INFO L93 Difference]: Finished difference Result 754 states and 834 transitions. [2023-12-21 05:16:10,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-21 05:16:10,192 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 59 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-21 05:16:10,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:10,194 INFO L225 Difference]: With dead ends: 754 [2023-12-21 05:16:10,194 INFO L226 Difference]: Without dead ends: 731 [2023-12-21 05:16:10,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 35 SyntacticMatches, 11 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1031 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=651, Invalid=7181, Unknown=0, NotChecked=0, Total=7832 [2023-12-21 05:16:10,196 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 631 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 1952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:10,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 1954 Invalid, 1952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 05:16:10,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-12-21 05:16:10,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 709. [2023-12-21 05:16:10,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 708 states have (on average 1.1059322033898304) internal successors, (783), 708 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:10,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 783 transitions. [2023-12-21 05:16:10,701 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 783 transitions. Word has length 40 [2023-12-21 05:16:10,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:10,702 INFO L495 AbstractCegarLoop]: Abstraction has 709 states and 783 transitions. [2023-12-21 05:16:10,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 59 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:10,706 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 783 transitions. [2023-12-21 05:16:10,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 05:16:10,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:10,707 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:10,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2023-12-21 05:16:10,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2023-12-21 05:16:10,912 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:10,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:10,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1805018702, now seen corresponding path program 79 times [2023-12-21 05:16:10,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:10,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225929217] [2023-12-21 05:16:10,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:10,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-21 05:16:11,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:11,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225929217] [2023-12-21 05:16:11,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225929217] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:11,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652882719] [2023-12-21 05:16:11,041 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:16:11,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:11,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:11,058 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:16:11,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2023-12-21 05:16:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:11,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 05:16:11,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-21 05:16:11,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:11,269 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-21 05:16:11,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652882719] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:11,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:11,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2023-12-21 05:16:11,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130686385] [2023-12-21 05:16:11,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:11,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 05:16:11,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:11,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 05:16:11,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=329, Unknown=0, NotChecked=0, Total=506 [2023-12-21 05:16:11,271 INFO L87 Difference]: Start difference. First operand 709 states and 783 transitions. Second operand has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:11,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:11,902 INFO L93 Difference]: Finished difference Result 825 states and 918 transitions. [2023-12-21 05:16:11,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-21 05:16:11,903 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-21 05:16:11,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:11,904 INFO L225 Difference]: With dead ends: 825 [2023-12-21 05:16:11,904 INFO L226 Difference]: Without dead ends: 697 [2023-12-21 05:16:11,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 60 SyntacticMatches, 12 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=487, Invalid=919, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 05:16:11,905 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 72 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:11,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 146 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:16:11,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2023-12-21 05:16:12,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2023-12-21 05:16:12,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 1.1020114942528736) internal successors, (767), 696 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:12,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 767 transitions. [2023-12-21 05:16:12,397 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 767 transitions. Word has length 40 [2023-12-21 05:16:12,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:12,397 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 767 transitions. [2023-12-21 05:16:12,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:12,397 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 767 transitions. [2023-12-21 05:16:12,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 05:16:12,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:12,398 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:12,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2023-12-21 05:16:12,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2023-12-21 05:16:12,603 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:12,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:12,603 INFO L85 PathProgramCache]: Analyzing trace with hash -79321705, now seen corresponding path program 80 times [2023-12-21 05:16:12,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:12,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256233033] [2023-12-21 05:16:12,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:12,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:12,696 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-21 05:16:12,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:12,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256233033] [2023-12-21 05:16:12,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256233033] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:12,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915701781] [2023-12-21 05:16:12,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:16:12,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:12,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:12,699 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:16:12,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2023-12-21 05:16:12,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:16:12,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:12,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 05:16:12,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-21 05:16:12,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-21 05:16:12,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915701781] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:12,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:12,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2023-12-21 05:16:12,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226938375] [2023-12-21 05:16:12,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:12,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 05:16:12,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:12,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 05:16:12,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=329, Unknown=0, NotChecked=0, Total=506 [2023-12-21 05:16:12,943 INFO L87 Difference]: Start difference. First operand 697 states and 767 transitions. Second operand has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:13,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:13,640 INFO L93 Difference]: Finished difference Result 722 states and 792 transitions. [2023-12-21 05:16:13,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-21 05:16:13,640 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-21 05:16:13,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:13,642 INFO L225 Difference]: With dead ends: 722 [2023-12-21 05:16:13,642 INFO L226 Difference]: Without dead ends: 717 [2023-12-21 05:16:13,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 60 SyntacticMatches, 12 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=487, Invalid=919, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 05:16:13,643 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 63 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:13,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 118 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:16:13,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-12-21 05:16:14,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 698. [2023-12-21 05:16:14,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 1.1018651362984218) internal successors, (768), 697 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 768 transitions. [2023-12-21 05:16:14,129 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 768 transitions. Word has length 40 [2023-12-21 05:16:14,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:14,129 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 768 transitions. [2023-12-21 05:16:14,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:14,129 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 768 transitions. [2023-12-21 05:16:14,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 05:16:14,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:14,130 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:14,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2023-12-21 05:16:14,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2023-12-21 05:16:14,334 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:14,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:14,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1691715220, now seen corresponding path program 81 times [2023-12-21 05:16:14,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:14,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802202761] [2023-12-21 05:16:14,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:14,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:14,725 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:16:14,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:14,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802202761] [2023-12-21 05:16:14,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802202761] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:14,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658488682] [2023-12-21 05:16:14,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:16:14,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:14,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:14,726 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:16:14,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2023-12-21 05:16:14,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-21 05:16:14,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:14,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-21 05:16:14,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:16:15,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:16:15,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658488682] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:15,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:15,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 50 [2023-12-21 05:16:15,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378210491] [2023-12-21 05:16:15,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:15,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-21 05:16:15,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:15,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-21 05:16:15,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=2330, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 05:16:15,298 INFO L87 Difference]: Start difference. First operand 698 states and 768 transitions. Second operand has 50 states, 50 states have (on average 1.34) internal successors, (67), 50 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:16,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:16,442 INFO L93 Difference]: Finished difference Result 765 states and 842 transitions. [2023-12-21 05:16:16,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 05:16:16,442 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.34) internal successors, (67), 50 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-21 05:16:16,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:16,444 INFO L225 Difference]: With dead ends: 765 [2023-12-21 05:16:16,444 INFO L226 Difference]: Without dead ends: 757 [2023-12-21 05:16:16,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=193, Invalid=4097, Unknown=0, NotChecked=0, Total=4290 [2023-12-21 05:16:16,445 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 108 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 2062 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 2063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:16,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1739 Invalid, 2063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2062 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:16:16,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2023-12-21 05:16:16,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 706. [2023-12-21 05:16:16,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 1.102127659574468) internal successors, (777), 705 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:16,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 777 transitions. [2023-12-21 05:16:16,957 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 777 transitions. Word has length 41 [2023-12-21 05:16:16,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:16,957 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 777 transitions. [2023-12-21 05:16:16,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.34) internal successors, (67), 50 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:16,957 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 777 transitions. [2023-12-21 05:16:16,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 05:16:16,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:16,958 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:16,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2023-12-21 05:16:17,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:17,163 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:17,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:17,163 INFO L85 PathProgramCache]: Analyzing trace with hash 484799952, now seen corresponding path program 82 times [2023-12-21 05:16:17,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:17,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246695137] [2023-12-21 05:16:17,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:17,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:17,582 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:16:17,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:17,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246695137] [2023-12-21 05:16:17,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246695137] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:17,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161106472] [2023-12-21 05:16:17,582 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:16:17,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:17,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:17,585 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:16:17,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2023-12-21 05:16:17,629 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:16:17,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:17,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 05:16:17,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:16:18,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:16:18,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161106472] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:18,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:18,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 48 [2023-12-21 05:16:18,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520193390] [2023-12-21 05:16:18,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:18,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 05:16:18,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:18,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 05:16:18,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=2137, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 05:16:18,156 INFO L87 Difference]: Start difference. First operand 706 states and 777 transitions. Second operand has 48 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:19,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:19,225 INFO L93 Difference]: Finished difference Result 725 states and 795 transitions. [2023-12-21 05:16:19,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 05:16:19,225 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-21 05:16:19,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:19,227 INFO L225 Difference]: With dead ends: 725 [2023-12-21 05:16:19,227 INFO L226 Difference]: Without dead ends: 698 [2023-12-21 05:16:19,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=191, Invalid=3715, Unknown=0, NotChecked=0, Total=3906 [2023-12-21 05:16:19,227 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 85 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:19,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1440 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:16:19,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2023-12-21 05:16:19,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2023-12-21 05:16:19,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 1.1018651362984218) internal successors, (768), 697 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:19,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 768 transitions. [2023-12-21 05:16:19,710 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 768 transitions. Word has length 41 [2023-12-21 05:16:19,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:19,710 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 768 transitions. [2023-12-21 05:16:19,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:19,710 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 768 transitions. [2023-12-21 05:16:19,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 05:16:19,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:19,711 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:19,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2023-12-21 05:16:19,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:19,912 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:19,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:19,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1144646292, now seen corresponding path program 83 times [2023-12-21 05:16:19,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:19,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480666763] [2023-12-21 05:16:19,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:19,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:20,227 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:16:20,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:20,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480666763] [2023-12-21 05:16:20,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480666763] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:20,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694092329] [2023-12-21 05:16:20,227 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:16:20,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:20,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:20,229 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:16:20,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2023-12-21 05:16:20,293 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-21 05:16:20,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:20,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-21 05:16:20,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:20,626 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:16:20,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:16:20,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694092329] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:20,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:20,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 46 [2023-12-21 05:16:20,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202730906] [2023-12-21 05:16:20,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:20,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-21 05:16:20,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:20,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-21 05:16:20,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1952, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 05:16:20,722 INFO L87 Difference]: Start difference. First operand 698 states and 768 transitions. Second operand has 46 states, 46 states have (on average 1.391304347826087) internal successors, (64), 46 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:21,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:21,774 INFO L93 Difference]: Finished difference Result 716 states and 785 transitions. [2023-12-21 05:16:21,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 05:16:21,775 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.391304347826087) internal successors, (64), 46 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-21 05:16:21,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:21,776 INFO L225 Difference]: With dead ends: 716 [2023-12-21 05:16:21,776 INFO L226 Difference]: Without dead ends: 688 [2023-12-21 05:16:21,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=3351, Unknown=0, NotChecked=0, Total=3540 [2023-12-21 05:16:21,777 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 72 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:21,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1208 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:16:21,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2023-12-21 05:16:22,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2023-12-21 05:16:22,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 687 states have (on average 1.1018922852983988) internal successors, (757), 687 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:22,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 757 transitions. [2023-12-21 05:16:22,254 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 757 transitions. Word has length 41 [2023-12-21 05:16:22,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:22,254 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 757 transitions. [2023-12-21 05:16:22,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.391304347826087) internal successors, (64), 46 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:22,254 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 757 transitions. [2023-12-21 05:16:22,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 05:16:22,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:22,255 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:22,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2023-12-21 05:16:22,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:22,460 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:22,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:22,460 INFO L85 PathProgramCache]: Analyzing trace with hash -130192944, now seen corresponding path program 84 times [2023-12-21 05:16:22,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:22,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040488671] [2023-12-21 05:16:22,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:22,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:22,749 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:16:22,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:22,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040488671] [2023-12-21 05:16:22,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040488671] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:22,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486027285] [2023-12-21 05:16:22,749 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:16:22,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:22,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:22,750 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:16:22,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2023-12-21 05:16:22,797 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-21 05:16:22,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:22,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-21 05:16:22,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:16:23,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:16:23,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486027285] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:23,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:23,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 44 [2023-12-21 05:16:23,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971072001] [2023-12-21 05:16:23,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:23,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 05:16:23,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:23,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 05:16:23,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1775, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 05:16:23,275 INFO L87 Difference]: Start difference. First operand 688 states and 757 transitions. Second operand has 44 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 44 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:24,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:24,237 INFO L93 Difference]: Finished difference Result 705 states and 773 transitions. [2023-12-21 05:16:24,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 05:16:24,237 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 44 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-21 05:16:24,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:24,255 INFO L225 Difference]: With dead ends: 705 [2023-12-21 05:16:24,255 INFO L226 Difference]: Without dead ends: 676 [2023-12-21 05:16:24,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=187, Invalid=3005, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 05:16:24,255 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 57 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:24,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 894 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:16:24,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-12-21 05:16:24,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 676. [2023-12-21 05:16:24,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 675 states have (on average 1.1022222222222222) internal successors, (744), 675 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:24,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 744 transitions. [2023-12-21 05:16:24,732 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 744 transitions. Word has length 41 [2023-12-21 05:16:24,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:24,732 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 744 transitions. [2023-12-21 05:16:24,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 44 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:24,732 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 744 transitions. [2023-12-21 05:16:24,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 05:16:24,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:24,733 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:24,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2023-12-21 05:16:24,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:24,937 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:24,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:24,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1252692332, now seen corresponding path program 85 times [2023-12-21 05:16:24,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:24,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253648783] [2023-12-21 05:16:24,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:24,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:25,233 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:16:25,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:25,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253648783] [2023-12-21 05:16:25,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253648783] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:25,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553874608] [2023-12-21 05:16:25,233 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:16:25,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:25,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:25,234 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:16:25,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2023-12-21 05:16:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:25,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-21 05:16:25,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:16:25,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:25,681 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:16:25,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553874608] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:25,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:25,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 42 [2023-12-21 05:16:25,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858239019] [2023-12-21 05:16:25,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:25,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-21 05:16:25,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:25,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-21 05:16:25,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1606, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 05:16:25,682 INFO L87 Difference]: Start difference. First operand 676 states and 744 transitions. Second operand has 42 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 42 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:26,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:26,545 INFO L93 Difference]: Finished difference Result 692 states and 759 transitions. [2023-12-21 05:16:26,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 05:16:26,545 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 42 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-21 05:16:26,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:26,546 INFO L225 Difference]: With dead ends: 692 [2023-12-21 05:16:26,546 INFO L226 Difference]: Without dead ends: 662 [2023-12-21 05:16:26,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=185, Invalid=2677, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 05:16:26,547 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 40 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:26,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 651 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:16:26,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-12-21 05:16:27,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2023-12-21 05:16:27,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.1028744326777609) internal successors, (729), 661 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:27,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 729 transitions. [2023-12-21 05:16:27,008 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 729 transitions. Word has length 41 [2023-12-21 05:16:27,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:27,008 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 729 transitions. [2023-12-21 05:16:27,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 42 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:27,009 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 729 transitions. [2023-12-21 05:16:27,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 05:16:27,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:27,009 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:27,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2023-12-21 05:16:27,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:27,214 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:27,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:27,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1865186768, now seen corresponding path program 86 times [2023-12-21 05:16:27,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:27,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692844261] [2023-12-21 05:16:27,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:27,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:27,464 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:16:27,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:27,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692844261] [2023-12-21 05:16:27,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692844261] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:27,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496315340] [2023-12-21 05:16:27,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:16:27,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:27,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:27,465 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:16:27,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2023-12-21 05:16:27,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:16:27,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:27,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 05:16:27,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:27,875 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:16:27,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:16:27,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496315340] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:27,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:27,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 40 [2023-12-21 05:16:27,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945597103] [2023-12-21 05:16:27,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:27,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-21 05:16:27,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:27,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-21 05:16:27,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1445, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 05:16:27,981 INFO L87 Difference]: Start difference. First operand 662 states and 729 transitions. Second operand has 40 states, 40 states have (on average 1.45) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:28,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:28,781 INFO L93 Difference]: Finished difference Result 688 states and 758 transitions. [2023-12-21 05:16:28,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 05:16:28,782 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.45) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-21 05:16:28,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:28,783 INFO L225 Difference]: With dead ends: 688 [2023-12-21 05:16:28,783 INFO L226 Difference]: Without dead ends: 683 [2023-12-21 05:16:28,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=2367, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 05:16:28,783 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 31 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:28,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 415 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:16:28,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2023-12-21 05:16:29,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 675. [2023-12-21 05:16:29,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 1.1038575667655786) internal successors, (744), 674 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:29,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 744 transitions. [2023-12-21 05:16:29,255 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 744 transitions. Word has length 41 [2023-12-21 05:16:29,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:29,256 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 744 transitions. [2023-12-21 05:16:29,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.45) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:29,256 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 744 transitions. [2023-12-21 05:16:29,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 05:16:29,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:29,257 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:29,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2023-12-21 05:16:29,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2023-12-21 05:16:29,461 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:29,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:29,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1458839526, now seen corresponding path program 87 times [2023-12-21 05:16:29,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:29,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261750112] [2023-12-21 05:16:29,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:29,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:16:29,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:29,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261750112] [2023-12-21 05:16:29,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261750112] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:29,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088739171] [2023-12-21 05:16:29,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:16:29,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:29,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:29,845 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:16:29,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2023-12-21 05:16:29,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-21 05:16:29,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:29,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-21 05:16:29,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:16:30,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:16:31,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088739171] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:31,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:31,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 64 [2023-12-21 05:16:31,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61105520] [2023-12-21 05:16:31,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:31,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-21 05:16:31,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:31,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-21 05:16:31,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=3855, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 05:16:31,391 INFO L87 Difference]: Start difference. First operand 675 states and 744 transitions. Second operand has 64 states, 64 states have (on average 1.421875) internal successors, (91), 64 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:34,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:34,320 INFO L93 Difference]: Finished difference Result 1164 states and 1261 transitions. [2023-12-21 05:16:34,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-21 05:16:34,321 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.421875) internal successors, (91), 64 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-21 05:16:34,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:34,322 INFO L225 Difference]: With dead ends: 1164 [2023-12-21 05:16:34,322 INFO L226 Difference]: Without dead ends: 1116 [2023-12-21 05:16:34,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 36 SyntacticMatches, 11 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1591 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1729, Invalid=9827, Unknown=0, NotChecked=0, Total=11556 [2023-12-21 05:16:34,323 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 552 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:34,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 1308 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:16:34,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2023-12-21 05:16:34,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 738. [2023-12-21 05:16:34,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 737 states have (on average 1.1031207598371777) internal successors, (813), 737 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:34,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 813 transitions. [2023-12-21 05:16:34,854 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 813 transitions. Word has length 42 [2023-12-21 05:16:34,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:34,854 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 813 transitions. [2023-12-21 05:16:34,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.421875) internal successors, (91), 64 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:34,854 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 813 transitions. [2023-12-21 05:16:34,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 05:16:34,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:34,855 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:34,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2023-12-21 05:16:35,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2023-12-21 05:16:35,059 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:35,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:35,060 INFO L85 PathProgramCache]: Analyzing trace with hash 212605325, now seen corresponding path program 88 times [2023-12-21 05:16:35,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:35,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022205697] [2023-12-21 05:16:35,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:35,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:35,446 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:16:35,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:35,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022205697] [2023-12-21 05:16:35,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022205697] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:35,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945918727] [2023-12-21 05:16:35,446 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:16:35,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:35,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:35,447 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:16:35,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2023-12-21 05:16:35,493 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:16:35,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:35,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-21 05:16:35,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:36,267 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:16:36,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:16:37,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945918727] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:37,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:37,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 64 [2023-12-21 05:16:37,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168157773] [2023-12-21 05:16:37,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:37,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-21 05:16:37,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:37,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-21 05:16:37,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=3856, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 05:16:37,034 INFO L87 Difference]: Start difference. First operand 738 states and 813 transitions. Second operand has 64 states, 64 states have (on average 1.421875) internal successors, (91), 64 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:39,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:39,998 INFO L93 Difference]: Finished difference Result 791 states and 872 transitions. [2023-12-21 05:16:39,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 05:16:39,998 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.421875) internal successors, (91), 64 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-21 05:16:39,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:39,999 INFO L225 Difference]: With dead ends: 791 [2023-12-21 05:16:39,999 INFO L226 Difference]: Without dead ends: 767 [2023-12-21 05:16:39,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 35 SyntacticMatches, 12 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=747, Invalid=8565, Unknown=0, NotChecked=0, Total=9312 [2023-12-21 05:16:40,000 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 793 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 2321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:40,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 2237 Invalid, 2321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2235 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 05:16:40,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2023-12-21 05:16:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 744. [2023-12-21 05:16:40,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 743 states have (on average 1.1022880215343203) internal successors, (819), 743 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:40,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 819 transitions. [2023-12-21 05:16:40,549 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 819 transitions. Word has length 42 [2023-12-21 05:16:40,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:40,549 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 819 transitions. [2023-12-21 05:16:40,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.421875) internal successors, (91), 64 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:40,549 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 819 transitions. [2023-12-21 05:16:40,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 05:16:40,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:40,550 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:40,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2023-12-21 05:16:40,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:40,754 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:40,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:40,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2015407287, now seen corresponding path program 89 times [2023-12-21 05:16:40,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:40,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225689180] [2023-12-21 05:16:40,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:40,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:40,873 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-21 05:16:40,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:40,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225689180] [2023-12-21 05:16:40,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225689180] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:40,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027050396] [2023-12-21 05:16:40,873 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:16:40,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:40,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:40,874 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:16:40,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2023-12-21 05:16:40,923 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-21 05:16:40,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:40,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 05:16:40,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-21 05:16:41,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-21 05:16:41,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027050396] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:41,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:41,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 25 [2023-12-21 05:16:41,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727330839] [2023-12-21 05:16:41,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:41,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 05:16:41,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:41,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 05:16:41,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2023-12-21 05:16:41,116 INFO L87 Difference]: Start difference. First operand 744 states and 819 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:41,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:41,974 INFO L93 Difference]: Finished difference Result 826 states and 916 transitions. [2023-12-21 05:16:41,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 05:16:41,974 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-21 05:16:41,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:41,975 INFO L225 Difference]: With dead ends: 826 [2023-12-21 05:16:41,975 INFO L226 Difference]: Without dead ends: 810 [2023-12-21 05:16:41,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 12 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=495, Invalid=1485, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 05:16:41,975 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 74 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:41,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 158 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:16:41,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2023-12-21 05:16:42,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 784. [2023-12-21 05:16:42,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.1136653895274584) internal successors, (872), 783 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:42,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 872 transitions. [2023-12-21 05:16:42,558 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 872 transitions. Word has length 42 [2023-12-21 05:16:42,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:42,558 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 872 transitions. [2023-12-21 05:16:42,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:42,558 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 872 transitions. [2023-12-21 05:16:42,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 05:16:42,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:42,559 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:42,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2023-12-21 05:16:42,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:42,762 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:42,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:42,762 INFO L85 PathProgramCache]: Analyzing trace with hash -564570482, now seen corresponding path program 90 times [2023-12-21 05:16:42,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:42,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067222] [2023-12-21 05:16:42,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:42,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:42,876 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-21 05:16:42,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:42,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067222] [2023-12-21 05:16:42,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067222] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:42,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95760205] [2023-12-21 05:16:42,876 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:16:42,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:42,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:42,879 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:16:42,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2023-12-21 05:16:42,937 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-21 05:16:42,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:42,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 05:16:42,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-21 05:16:43,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-21 05:16:43,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95760205] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:43,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:43,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 25 [2023-12-21 05:16:43,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334511585] [2023-12-21 05:16:43,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:43,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 05:16:43,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:43,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 05:16:43,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2023-12-21 05:16:43,129 INFO L87 Difference]: Start difference. First operand 784 states and 872 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:44,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:44,049 INFO L93 Difference]: Finished difference Result 1097 states and 1248 transitions. [2023-12-21 05:16:44,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 05:16:44,049 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-21 05:16:44,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:44,051 INFO L225 Difference]: With dead ends: 1097 [2023-12-21 05:16:44,051 INFO L226 Difference]: Without dead ends: 906 [2023-12-21 05:16:44,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 12 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=495, Invalid=1485, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 05:16:44,051 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 71 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:44,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 201 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:16:44,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-21 05:16:44,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 894. [2023-12-21 05:16:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 1.1142217245240762) internal successors, (995), 893 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:44,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 995 transitions. [2023-12-21 05:16:44,727 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 995 transitions. Word has length 42 [2023-12-21 05:16:44,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:44,727 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 995 transitions. [2023-12-21 05:16:44,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:44,727 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 995 transitions. [2023-12-21 05:16:44,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 05:16:44,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:44,728 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:44,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2023-12-21 05:16:44,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:44,933 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:44,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:44,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1740522521, now seen corresponding path program 91 times [2023-12-21 05:16:44,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:44,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969511126] [2023-12-21 05:16:44,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:44,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:45,468 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:16:45,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:45,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969511126] [2023-12-21 05:16:45,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969511126] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:45,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400269274] [2023-12-21 05:16:45,468 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:16:45,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:45,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:45,469 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:16:45,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2023-12-21 05:16:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:45,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-21 05:16:45,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:16:45,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:16:46,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400269274] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:46,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:46,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 52 [2023-12-21 05:16:46,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489924251] [2023-12-21 05:16:46,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:46,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-21 05:16:46,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:46,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-21 05:16:46,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=2530, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 05:16:46,088 INFO L87 Difference]: Start difference. First operand 894 states and 995 transitions. Second operand has 52 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 52 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:47,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:47,606 INFO L93 Difference]: Finished difference Result 971 states and 1080 transitions. [2023-12-21 05:16:47,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 05:16:47,606 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 52 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-21 05:16:47,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:47,607 INFO L225 Difference]: With dead ends: 971 [2023-12-21 05:16:47,607 INFO L226 Difference]: Without dead ends: 963 [2023-12-21 05:16:47,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=199, Invalid=4493, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 05:16:47,608 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 117 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 2451 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:47,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 2072 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 05:16:47,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2023-12-21 05:16:48,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 902. [2023-12-21 05:16:48,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 901 states have (on average 1.1143174250832408) internal successors, (1004), 901 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:48,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1004 transitions. [2023-12-21 05:16:48,303 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1004 transitions. Word has length 43 [2023-12-21 05:16:48,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:48,303 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 1004 transitions. [2023-12-21 05:16:48,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 52 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:48,303 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1004 transitions. [2023-12-21 05:16:48,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 05:16:48,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:48,304 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:48,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2023-12-21 05:16:48,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2023-12-21 05:16:48,509 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:48,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:48,509 INFO L85 PathProgramCache]: Analyzing trace with hash -525982183, now seen corresponding path program 92 times [2023-12-21 05:16:48,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:48,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638590742] [2023-12-21 05:16:48,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:48,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:16:48,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:48,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638590742] [2023-12-21 05:16:48,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638590742] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:48,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132970499] [2023-12-21 05:16:48,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:16:48,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:48,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:48,938 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:16:48,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2023-12-21 05:16:49,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:16:49,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:49,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-21 05:16:49,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:16:49,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:16:49,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132970499] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:49,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:49,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 51 [2023-12-21 05:16:49,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270494779] [2023-12-21 05:16:49,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:49,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-21 05:16:49,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:49,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-21 05:16:49,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=2424, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 05:16:49,546 INFO L87 Difference]: Start difference. First operand 902 states and 1004 transitions. Second operand has 51 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 51 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:50,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:50,856 INFO L93 Difference]: Finished difference Result 922 states and 1023 transitions. [2023-12-21 05:16:50,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 05:16:50,857 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 51 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-21 05:16:50,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:50,858 INFO L225 Difference]: With dead ends: 922 [2023-12-21 05:16:50,858 INFO L226 Difference]: Without dead ends: 894 [2023-12-21 05:16:50,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=202, Invalid=4220, Unknown=0, NotChecked=0, Total=4422 [2023-12-21 05:16:50,858 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 96 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:50,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 1580 Invalid, 1861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:16:50,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2023-12-21 05:16:51,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 894. [2023-12-21 05:16:51,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 1.1142217245240762) internal successors, (995), 893 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 995 transitions. [2023-12-21 05:16:51,542 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 995 transitions. Word has length 43 [2023-12-21 05:16:51,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:51,542 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 995 transitions. [2023-12-21 05:16:51,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 51 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:51,543 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 995 transitions. [2023-12-21 05:16:51,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 05:16:51,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:51,543 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:51,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2023-12-21 05:16:51,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2023-12-21 05:16:51,748 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:51,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:51,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1831148569, now seen corresponding path program 93 times [2023-12-21 05:16:51,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:51,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410020941] [2023-12-21 05:16:51,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:51,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:16:52,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:52,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410020941] [2023-12-21 05:16:52,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410020941] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:52,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131543561] [2023-12-21 05:16:52,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:16:52,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:52,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:52,151 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:16:52,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2023-12-21 05:16:52,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-21 05:16:52,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:52,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 05:16:52,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:52,610 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:16:52,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:52,732 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:16:52,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131543561] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:52,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:52,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 49 [2023-12-21 05:16:52,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496251189] [2023-12-21 05:16:52,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:52,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-21 05:16:52,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:52,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-21 05:16:52,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2227, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 05:16:52,733 INFO L87 Difference]: Start difference. First operand 894 states and 995 transitions. Second operand has 49 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 49 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:53,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:53,964 INFO L93 Difference]: Finished difference Result 913 states and 1013 transitions. [2023-12-21 05:16:53,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 05:16:53,964 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 49 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-21 05:16:53,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:53,965 INFO L225 Difference]: With dead ends: 913 [2023-12-21 05:16:53,965 INFO L226 Difference]: Without dead ends: 884 [2023-12-21 05:16:53,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=200, Invalid=3832, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 05:16:53,966 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 79 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:53,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1338 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1602 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:16:53,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2023-12-21 05:16:54,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 884. [2023-12-21 05:16:54,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 883 states have (on average 1.1143827859569648) internal successors, (984), 883 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:54,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 984 transitions. [2023-12-21 05:16:54,648 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 984 transitions. Word has length 43 [2023-12-21 05:16:54,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:54,648 INFO L495 AbstractCegarLoop]: Abstraction has 884 states and 984 transitions. [2023-12-21 05:16:54,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 49 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:54,649 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 984 transitions. [2023-12-21 05:16:54,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 05:16:54,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:54,649 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:54,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2023-12-21 05:16:54,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2023-12-21 05:16:54,854 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:54,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:54,855 INFO L85 PathProgramCache]: Analyzing trace with hash 73879065, now seen corresponding path program 94 times [2023-12-21 05:16:54,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:54,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434067057] [2023-12-21 05:16:54,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:54,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:16:55,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:55,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434067057] [2023-12-21 05:16:55,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434067057] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:55,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754261228] [2023-12-21 05:16:55,212 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:16:55,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:55,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:55,213 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:16:55,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2023-12-21 05:16:55,267 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:16:55,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:55,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-21 05:16:55,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:16:55,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:55,797 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:16:55,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754261228] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:55,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:55,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 47 [2023-12-21 05:16:55,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703856561] [2023-12-21 05:16:55,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:55,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-21 05:16:55,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:55,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-21 05:16:55,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=2038, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 05:16:55,799 INFO L87 Difference]: Start difference. First operand 884 states and 984 transitions. Second operand has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:57,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:57,062 INFO L93 Difference]: Finished difference Result 902 states and 1001 transitions. [2023-12-21 05:16:57,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 05:16:57,062 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-21 05:16:57,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:57,064 INFO L225 Difference]: With dead ends: 902 [2023-12-21 05:16:57,064 INFO L226 Difference]: Without dead ends: 872 [2023-12-21 05:16:57,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=198, Invalid=3462, Unknown=0, NotChecked=0, Total=3660 [2023-12-21 05:16:57,064 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 64 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:57,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1060 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:16:57,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2023-12-21 05:16:57,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2023-12-21 05:16:57,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 1.1148105625717566) internal successors, (971), 871 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:57,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 971 transitions. [2023-12-21 05:16:57,731 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 971 transitions. Word has length 43 [2023-12-21 05:16:57,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:57,731 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 971 transitions. [2023-12-21 05:16:57,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:57,731 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 971 transitions. [2023-12-21 05:16:57,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 05:16:57,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:57,732 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:57,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2023-12-21 05:16:57,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2023-12-21 05:16:57,937 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:57,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:57,937 INFO L85 PathProgramCache]: Analyzing trace with hash 127661081, now seen corresponding path program 95 times [2023-12-21 05:16:57,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:57,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544984810] [2023-12-21 05:16:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:57,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:16:58,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:58,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544984810] [2023-12-21 05:16:58,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544984810] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:58,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446600149] [2023-12-21 05:16:58,284 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:16:58,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:58,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:58,286 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:16:58,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2023-12-21 05:16:58,333 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-21 05:16:58,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:58,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-21 05:16:58,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:58,734 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:16:58,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:16:58,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446600149] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:58,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:58,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 45 [2023-12-21 05:16:58,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781020239] [2023-12-21 05:16:58,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:58,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-21 05:16:58,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:58,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-21 05:16:58,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1857, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 05:16:58,844 INFO L87 Difference]: Start difference. First operand 872 states and 971 transitions. Second operand has 45 states, 45 states have (on average 1.4) internal successors, (63), 45 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:59,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:59,984 INFO L93 Difference]: Finished difference Result 889 states and 987 transitions. [2023-12-21 05:16:59,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 05:16:59,985 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.4) internal successors, (63), 45 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-21 05:16:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:59,986 INFO L225 Difference]: With dead ends: 889 [2023-12-21 05:16:59,986 INFO L226 Difference]: Without dead ends: 858 [2023-12-21 05:16:59,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=196, Invalid=3110, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 05:16:59,987 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 50 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:59,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 742 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:16:59,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2023-12-21 05:17:00,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 858. [2023-12-21 05:17:00,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 1.1155192532088682) internal successors, (956), 857 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:00,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 956 transitions. [2023-12-21 05:17:00,674 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 956 transitions. Word has length 43 [2023-12-21 05:17:00,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:00,674 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 956 transitions. [2023-12-21 05:17:00,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.4) internal successors, (63), 45 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:00,674 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 956 transitions. [2023-12-21 05:17:00,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 05:17:00,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:00,675 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:00,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2023-12-21 05:17:00,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:00,880 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:00,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:00,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1064914274, now seen corresponding path program 96 times [2023-12-21 05:17:00,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:00,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467586375] [2023-12-21 05:17:00,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:00,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:01,096 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 7 proven. 43 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-21 05:17:01,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:01,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467586375] [2023-12-21 05:17:01,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467586375] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:01,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076396927] [2023-12-21 05:17:01,096 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:17:01,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:01,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:01,097 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:17:01,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2023-12-21 05:17:01,146 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-21 05:17:01,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:01,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 05:17:01,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-21 05:17:01,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-21 05:17:01,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076396927] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:01,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:01,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 40 [2023-12-21 05:17:01,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3291378] [2023-12-21 05:17:01,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:01,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-21 05:17:01,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:01,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-21 05:17:01,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 05:17:01,800 INFO L87 Difference]: Start difference. First operand 858 states and 956 transitions. Second operand has 40 states, 40 states have (on average 1.475) internal successors, (59), 40 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:03,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:03,370 INFO L93 Difference]: Finished difference Result 1071 states and 1193 transitions. [2023-12-21 05:17:03,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 05:17:03,371 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.475) internal successors, (59), 40 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-21 05:17:03,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:03,372 INFO L225 Difference]: With dead ends: 1071 [2023-12-21 05:17:03,372 INFO L226 Difference]: Without dead ends: 1001 [2023-12-21 05:17:03,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=656, Invalid=3504, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 05:17:03,373 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 459 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:03,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 710 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:17:03,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2023-12-21 05:17:04,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 938. [2023-12-21 05:17:04,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 937 states have (on average 1.104589114194237) internal successors, (1035), 937 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:04,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1035 transitions. [2023-12-21 05:17:04,092 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1035 transitions. Word has length 43 [2023-12-21 05:17:04,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:04,092 INFO L495 AbstractCegarLoop]: Abstraction has 938 states and 1035 transitions. [2023-12-21 05:17:04,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.475) internal successors, (59), 40 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:04,092 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1035 transitions. [2023-12-21 05:17:04,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 05:17:04,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:04,093 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:04,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2023-12-21 05:17:04,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2023-12-21 05:17:04,298 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:04,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:04,299 INFO L85 PathProgramCache]: Analyzing trace with hash -463964647, now seen corresponding path program 97 times [2023-12-21 05:17:04,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:04,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938108703] [2023-12-21 05:17:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:04,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:17:04,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:04,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938108703] [2023-12-21 05:17:04,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938108703] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:04,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004136327] [2023-12-21 05:17:04,607 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:17:04,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:04,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:04,608 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:17:04,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2023-12-21 05:17:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:04,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-21 05:17:04,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:17:04,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:17:05,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004136327] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:05,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:05,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-12-21 05:17:05,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293375309] [2023-12-21 05:17:05,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:05,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-21 05:17:05,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:05,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-21 05:17:05,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2025, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 05:17:05,185 INFO L87 Difference]: Start difference. First operand 938 states and 1035 transitions. Second operand has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:06,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:06,386 INFO L93 Difference]: Finished difference Result 977 states and 1078 transitions. [2023-12-21 05:17:06,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 05:17:06,387 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-21 05:17:06,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:06,388 INFO L225 Difference]: With dead ends: 977 [2023-12-21 05:17:06,388 INFO L226 Difference]: Without dead ends: 945 [2023-12-21 05:17:06,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=3213, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 05:17:06,389 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 38 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:06,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 586 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:17:06,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2023-12-21 05:17:07,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 933. [2023-12-21 05:17:07,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 932 states have (on average 1.1062231759656653) internal successors, (1031), 932 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:07,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1031 transitions. [2023-12-21 05:17:07,102 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1031 transitions. Word has length 43 [2023-12-21 05:17:07,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:07,103 INFO L495 AbstractCegarLoop]: Abstraction has 933 states and 1031 transitions. [2023-12-21 05:17:07,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:07,103 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1031 transitions. [2023-12-21 05:17:07,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 05:17:07,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:07,104 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:07,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2023-12-21 05:17:07,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:07,308 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:07,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:07,308 INFO L85 PathProgramCache]: Analyzing trace with hash 372968958, now seen corresponding path program 98 times [2023-12-21 05:17:07,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:07,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017004558] [2023-12-21 05:17:07,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:07,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:07,503 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-21 05:17:07,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:07,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017004558] [2023-12-21 05:17:07,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017004558] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:07,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196586892] [2023-12-21 05:17:07,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:17:07,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:07,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:07,505 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:17:07,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2023-12-21 05:17:07,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:17:07,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:07,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 05:17:07,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-21 05:17:07,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-21 05:17:08,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196586892] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:08,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:08,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 40 [2023-12-21 05:17:08,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764683154] [2023-12-21 05:17:08,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:08,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-21 05:17:08,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:08,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-21 05:17:08,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 05:17:08,044 INFO L87 Difference]: Start difference. First operand 933 states and 1031 transitions. Second operand has 40 states, 40 states have (on average 1.5) internal successors, (60), 40 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:09,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:09,456 INFO L93 Difference]: Finished difference Result 976 states and 1073 transitions. [2023-12-21 05:17:09,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 05:17:09,457 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.5) internal successors, (60), 40 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-21 05:17:09,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:09,458 INFO L225 Difference]: With dead ends: 976 [2023-12-21 05:17:09,458 INFO L226 Difference]: Without dead ends: 938 [2023-12-21 05:17:09,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=349, Invalid=3073, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 05:17:09,458 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 351 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:09,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1082 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:17:09,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-12-21 05:17:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 933. [2023-12-21 05:17:10,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 932 states have (on average 1.0933476394849786) internal successors, (1019), 932 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1019 transitions. [2023-12-21 05:17:10,227 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1019 transitions. Word has length 43 [2023-12-21 05:17:10,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:10,227 INFO L495 AbstractCegarLoop]: Abstraction has 933 states and 1019 transitions. [2023-12-21 05:17:10,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.5) internal successors, (60), 40 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:10,227 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1019 transitions. [2023-12-21 05:17:10,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-21 05:17:10,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:10,228 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:10,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2023-12-21 05:17:10,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:10,433 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:10,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:10,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1861315341, now seen corresponding path program 99 times [2023-12-21 05:17:10,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:10,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258292658] [2023-12-21 05:17:10,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:10,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 13 proven. 156 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:17:10,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:10,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258292658] [2023-12-21 05:17:10,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258292658] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:10,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039311384] [2023-12-21 05:17:10,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:17:10,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:10,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:10,892 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:17:10,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2023-12-21 05:17:10,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-12-21 05:17:10,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:10,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 05:17:10,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:11,942 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 13 proven. 156 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:17:11,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 13 proven. 156 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:17:12,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039311384] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:12,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:12,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 69 [2023-12-21 05:17:12,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258160781] [2023-12-21 05:17:12,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:12,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-21 05:17:12,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:12,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-21 05:17:12,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=4501, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 05:17:12,801 INFO L87 Difference]: Start difference. First operand 933 states and 1019 transitions. Second operand has 69 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:16,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:16,764 INFO L93 Difference]: Finished difference Result 1590 states and 1708 transitions. [2023-12-21 05:17:16,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-21 05:17:16,765 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-21 05:17:16,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:16,767 INFO L225 Difference]: With dead ends: 1590 [2023-12-21 05:17:16,767 INFO L226 Difference]: Without dead ends: 1538 [2023-12-21 05:17:16,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 36 SyntacticMatches, 12 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1889 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2016, Invalid=11556, Unknown=0, NotChecked=0, Total=13572 [2023-12-21 05:17:16,768 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 619 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:16,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 1422 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:17:16,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2023-12-21 05:17:17,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1015. [2023-12-21 05:17:17,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1014 states have (on average 1.0927021696252466) internal successors, (1108), 1014 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:17,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1108 transitions. [2023-12-21 05:17:17,578 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1108 transitions. Word has length 44 [2023-12-21 05:17:17,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:17,578 INFO L495 AbstractCegarLoop]: Abstraction has 1015 states and 1108 transitions. [2023-12-21 05:17:17,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:17,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1108 transitions. [2023-12-21 05:17:17,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-21 05:17:17,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:17,579 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:17,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2023-12-21 05:17:17,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:17,784 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:17,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:17,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2136498170, now seen corresponding path program 100 times [2023-12-21 05:17:17,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:17,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850888572] [2023-12-21 05:17:17,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:17,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:18,196 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:17:18,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:18,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850888572] [2023-12-21 05:17:18,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850888572] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:18,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41072245] [2023-12-21 05:17:18,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:17:18,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:18,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:18,198 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:17:18,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2023-12-21 05:17:18,245 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:17:18,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:18,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 05:17:18,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:17:19,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:19,783 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 13 proven. 156 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:17:19,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41072245] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:19,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:19,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 69 [2023-12-21 05:17:19,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065681992] [2023-12-21 05:17:19,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:19,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-21 05:17:19,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:19,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-21 05:17:19,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=4502, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 05:17:19,784 INFO L87 Difference]: Start difference. First operand 1015 states and 1108 transitions. Second operand has 69 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:23,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:23,030 INFO L93 Difference]: Finished difference Result 1073 states and 1173 transitions. [2023-12-21 05:17:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-21 05:17:23,031 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-21 05:17:23,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:23,032 INFO L225 Difference]: With dead ends: 1073 [2023-12-21 05:17:23,032 INFO L226 Difference]: Without dead ends: 1047 [2023-12-21 05:17:23,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 35 SyntacticMatches, 13 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1464 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=849, Invalid=10071, Unknown=0, NotChecked=0, Total=10920 [2023-12-21 05:17:23,034 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 664 mSDsluCounter, 2668 mSDsCounter, 0 mSdLazyCounter, 2819 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:23,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 2727 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2819 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 05:17:23,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2023-12-21 05:17:23,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1022. [2023-12-21 05:17:23,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 1021 states have (on average 1.0920666013712046) internal successors, (1115), 1021 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:23,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1115 transitions. [2023-12-21 05:17:23,887 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1115 transitions. Word has length 44 [2023-12-21 05:17:23,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:23,887 INFO L495 AbstractCegarLoop]: Abstraction has 1022 states and 1115 transitions. [2023-12-21 05:17:23,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:23,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1115 transitions. [2023-12-21 05:17:23,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-21 05:17:23,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:23,888 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:23,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2023-12-21 05:17:24,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2023-12-21 05:17:24,092 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:24,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:24,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2065962706, now seen corresponding path program 101 times [2023-12-21 05:17:24,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:24,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344716510] [2023-12-21 05:17:24,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:24,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-21 05:17:24,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:24,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344716510] [2023-12-21 05:17:24,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344716510] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:24,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263052053] [2023-12-21 05:17:24,216 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:17:24,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:24,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:24,217 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:17:24,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2023-12-21 05:17:24,267 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-21 05:17:24,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:24,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 05:17:24,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-21 05:17:24,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-21 05:17:24,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263052053] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:24,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:24,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2023-12-21 05:17:24,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842820662] [2023-12-21 05:17:24,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:24,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 05:17:24,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:24,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 05:17:24,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=424, Unknown=0, NotChecked=0, Total=650 [2023-12-21 05:17:24,439 INFO L87 Difference]: Start difference. First operand 1022 states and 1115 transitions. Second operand has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:25,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:25,564 INFO L93 Difference]: Finished difference Result 1172 states and 1288 transitions. [2023-12-21 05:17:25,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-21 05:17:25,564 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-21 05:17:25,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:25,566 INFO L225 Difference]: With dead ends: 1172 [2023-12-21 05:17:25,566 INFO L226 Difference]: Without dead ends: 1010 [2023-12-21 05:17:25,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 65 SyntacticMatches, 14 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=744, Invalid=1418, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 05:17:25,566 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 96 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:25,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 159 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:25,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-12-21 05:17:26,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1010. [2023-12-21 05:17:26,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 1009 states have (on average 1.089197224975223) internal successors, (1099), 1009 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:26,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1099 transitions. [2023-12-21 05:17:26,453 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1099 transitions. Word has length 44 [2023-12-21 05:17:26,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:26,453 INFO L495 AbstractCegarLoop]: Abstraction has 1010 states and 1099 transitions. [2023-12-21 05:17:26,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:26,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1099 transitions. [2023-12-21 05:17:26,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-21 05:17:26,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:26,454 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:26,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2023-12-21 05:17:26,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:26,659 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:26,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:26,659 INFO L85 PathProgramCache]: Analyzing trace with hash -850520933, now seen corresponding path program 102 times [2023-12-21 05:17:26,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:26,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139593523] [2023-12-21 05:17:26,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:26,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:26,791 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-21 05:17:26,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:26,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139593523] [2023-12-21 05:17:26,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139593523] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:26,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443642078] [2023-12-21 05:17:26,791 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:17:26,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:26,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:26,794 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:17:26,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2023-12-21 05:17:26,852 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-21 05:17:26,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:26,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 05:17:26,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-21 05:17:26,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:27,071 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-21 05:17:27,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443642078] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:27,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:27,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2023-12-21 05:17:27,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025303297] [2023-12-21 05:17:27,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:27,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 05:17:27,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:27,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 05:17:27,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=424, Unknown=0, NotChecked=0, Total=650 [2023-12-21 05:17:27,073 INFO L87 Difference]: Start difference. First operand 1010 states and 1099 transitions. Second operand has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:28,249 INFO L93 Difference]: Finished difference Result 1042 states and 1131 transitions. [2023-12-21 05:17:28,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-21 05:17:28,249 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-21 05:17:28,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:28,251 INFO L225 Difference]: With dead ends: 1042 [2023-12-21 05:17:28,251 INFO L226 Difference]: Without dead ends: 1037 [2023-12-21 05:17:28,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 65 SyntacticMatches, 14 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=744, Invalid=1418, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 05:17:28,251 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 67 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:28,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 210 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:28,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2023-12-21 05:17:29,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1011. [2023-12-21 05:17:29,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1010 states have (on average 1.0891089108910892) internal successors, (1100), 1010 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:29,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1100 transitions. [2023-12-21 05:17:29,098 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1100 transitions. Word has length 44 [2023-12-21 05:17:29,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:29,098 INFO L495 AbstractCegarLoop]: Abstraction has 1011 states and 1100 transitions. [2023-12-21 05:17:29,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:29,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1100 transitions. [2023-12-21 05:17:29,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-21 05:17:29,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:29,099 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:29,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2023-12-21 05:17:29,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:29,304 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:29,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:29,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1251658572, now seen corresponding path program 103 times [2023-12-21 05:17:29,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:29,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736406905] [2023-12-21 05:17:29,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:29,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:17:29,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:29,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736406905] [2023-12-21 05:17:29,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736406905] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:29,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958536873] [2023-12-21 05:17:29,881 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:17:29,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:29,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:29,882 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:17:29,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2023-12-21 05:17:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:29,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-21 05:17:29,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:17:30,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:30,598 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:17:30,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958536873] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:30,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:30,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 56 [2023-12-21 05:17:30,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619381312] [2023-12-21 05:17:30,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:30,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-21 05:17:30,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:30,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-21 05:17:30,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2946, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 05:17:30,599 INFO L87 Difference]: Start difference. First operand 1011 states and 1100 transitions. Second operand has 56 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 56 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:32,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:32,292 INFO L93 Difference]: Finished difference Result 1091 states and 1188 transitions. [2023-12-21 05:17:32,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 05:17:32,292 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 56 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-21 05:17:32,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:32,293 INFO L225 Difference]: With dead ends: 1091 [2023-12-21 05:17:32,293 INFO L226 Difference]: Without dead ends: 1083 [2023-12-21 05:17:32,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=215, Invalid=5187, Unknown=0, NotChecked=0, Total=5402 [2023-12-21 05:17:32,294 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 124 mSDsluCounter, 2063 mSDsCounter, 0 mSdLazyCounter, 2599 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 2600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:32,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2115 Invalid, 2600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2599 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 05:17:32,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2023-12-21 05:17:33,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1019. [2023-12-21 05:17:33,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 1018 states have (on average 1.0893909626719056) internal successors, (1109), 1018 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:33,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1109 transitions. [2023-12-21 05:17:33,137 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1109 transitions. Word has length 45 [2023-12-21 05:17:33,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:33,137 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1109 transitions. [2023-12-21 05:17:33,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 56 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:33,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1109 transitions. [2023-12-21 05:17:33,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-21 05:17:33,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:33,138 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:33,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2023-12-21 05:17:33,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2023-12-21 05:17:33,343 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:33,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:33,343 INFO L85 PathProgramCache]: Analyzing trace with hash 394281648, now seen corresponding path program 104 times [2023-12-21 05:17:33,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:33,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461456374] [2023-12-21 05:17:33,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:33,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:33,705 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:17:33,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:33,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461456374] [2023-12-21 05:17:33,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461456374] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:33,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372782233] [2023-12-21 05:17:33,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:17:33,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:33,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:33,707 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:17:33,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2023-12-21 05:17:33,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:17:33,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:33,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-21 05:17:33,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:17:34,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:17:34,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372782233] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:34,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:34,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 54 [2023-12-21 05:17:34,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803495617] [2023-12-21 05:17:34,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:34,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-21 05:17:34,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:34,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-21 05:17:34,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=2729, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 05:17:34,193 INFO L87 Difference]: Start difference. First operand 1019 states and 1109 transitions. Second operand has 54 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:35,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:35,706 INFO L93 Difference]: Finished difference Result 1040 states and 1129 transitions. [2023-12-21 05:17:35,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 05:17:35,706 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-21 05:17:35,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:35,707 INFO L225 Difference]: With dead ends: 1040 [2023-12-21 05:17:35,707 INFO L226 Difference]: Without dead ends: 1011 [2023-12-21 05:17:35,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=213, Invalid=4757, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 05:17:35,708 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 101 mSDsluCounter, 1864 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:35,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 1914 Invalid, 2265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 05:17:35,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2023-12-21 05:17:36,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1011. [2023-12-21 05:17:36,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1010 states have (on average 1.0891089108910892) internal successors, (1100), 1010 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:36,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1100 transitions. [2023-12-21 05:17:36,550 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1100 transitions. Word has length 45 [2023-12-21 05:17:36,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:36,550 INFO L495 AbstractCegarLoop]: Abstraction has 1011 states and 1100 transitions. [2023-12-21 05:17:36,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:36,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1100 transitions. [2023-12-21 05:17:36,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-21 05:17:36,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:36,551 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:36,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2023-12-21 05:17:36,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2023-12-21 05:17:36,757 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:36,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:36,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1073285300, now seen corresponding path program 105 times [2023-12-21 05:17:36,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:36,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840612300] [2023-12-21 05:17:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:36,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:37,165 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:17:37,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:37,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840612300] [2023-12-21 05:17:37,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840612300] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:37,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172955938] [2023-12-21 05:17:37,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:17:37,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:37,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:37,168 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:17:37,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2023-12-21 05:17:37,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-21 05:17:37,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:37,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-21 05:17:37,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:37,692 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:17:37,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:17:37,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172955938] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:37,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:37,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 52 [2023-12-21 05:17:37,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45674745] [2023-12-21 05:17:37,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:37,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-21 05:17:37,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:37,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-21 05:17:37,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=2520, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 05:17:37,821 INFO L87 Difference]: Start difference. First operand 1011 states and 1100 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 52 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:39,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:39,478 INFO L93 Difference]: Finished difference Result 1031 states and 1119 transitions. [2023-12-21 05:17:39,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 05:17:39,479 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 52 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-21 05:17:39,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:39,480 INFO L225 Difference]: With dead ends: 1031 [2023-12-21 05:17:39,480 INFO L226 Difference]: Without dead ends: 1001 [2023-12-21 05:17:39,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=211, Invalid=4345, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 05:17:39,481 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 88 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:39,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 1636 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1969 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 05:17:39,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2023-12-21 05:17:40,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1001. [2023-12-21 05:17:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 1000 states have (on average 1.089) internal successors, (1089), 1000 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:40,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1089 transitions. [2023-12-21 05:17:40,319 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1089 transitions. Word has length 45 [2023-12-21 05:17:40,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:40,319 INFO L495 AbstractCegarLoop]: Abstraction has 1001 states and 1089 transitions. [2023-12-21 05:17:40,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 52 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:40,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1089 transitions. [2023-12-21 05:17:40,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-21 05:17:40,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:40,320 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:40,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2023-12-21 05:17:40,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2023-12-21 05:17:40,525 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:40,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:40,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1422678352, now seen corresponding path program 106 times [2023-12-21 05:17:40,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:40,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438103456] [2023-12-21 05:17:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:40,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:40,886 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:17:40,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:40,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438103456] [2023-12-21 05:17:40,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438103456] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:40,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625486754] [2023-12-21 05:17:40,887 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:17:40,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:40,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:40,888 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:17:40,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2023-12-21 05:17:40,938 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:17:40,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:40,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 05:17:40,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:41,396 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:17:41,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:41,543 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:17:41,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625486754] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:41,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:41,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 50 [2023-12-21 05:17:41,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16235860] [2023-12-21 05:17:41,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:41,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-21 05:17:41,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:41,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-21 05:17:41,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=2319, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 05:17:41,545 INFO L87 Difference]: Start difference. First operand 1001 states and 1089 transitions. Second operand has 50 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:43,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:43,037 INFO L93 Difference]: Finished difference Result 1020 states and 1107 transitions. [2023-12-21 05:17:43,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 05:17:43,037 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-21 05:17:43,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:43,038 INFO L225 Difference]: With dead ends: 1020 [2023-12-21 05:17:43,038 INFO L226 Difference]: Without dead ends: 989 [2023-12-21 05:17:43,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=209, Invalid=3951, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 05:17:43,039 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 71 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:43,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1174 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:17:43,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2023-12-21 05:17:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 989. [2023-12-21 05:17:43,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 988 states have (on average 1.0890688259109311) internal successors, (1076), 988 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:43,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1076 transitions. [2023-12-21 05:17:43,860 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1076 transitions. Word has length 45 [2023-12-21 05:17:43,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:43,860 INFO L495 AbstractCegarLoop]: Abstraction has 989 states and 1076 transitions. [2023-12-21 05:17:43,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:43,860 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1076 transitions. [2023-12-21 05:17:43,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-21 05:17:43,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:43,861 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:43,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2023-12-21 05:17:44,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:44,066 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:44,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:44,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1671693132, now seen corresponding path program 107 times [2023-12-21 05:17:44,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:44,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436635809] [2023-12-21 05:17:44,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:44,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:17:44,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:44,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436635809] [2023-12-21 05:17:44,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436635809] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:44,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248120814] [2023-12-21 05:17:44,450 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:17:44,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:44,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:44,451 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:17:44,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2023-12-21 05:17:44,501 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-21 05:17:44,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:44,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-21 05:17:44,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:17:44,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:17:45,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248120814] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:45,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:45,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 48 [2023-12-21 05:17:45,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372531250] [2023-12-21 05:17:45,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:45,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 05:17:45,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:45,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 05:17:45,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=2126, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 05:17:45,062 INFO L87 Difference]: Start difference. First operand 989 states and 1076 transitions. Second operand has 48 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:46,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:46,485 INFO L93 Difference]: Finished difference Result 1007 states and 1093 transitions. [2023-12-21 05:17:46,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 05:17:46,485 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-21 05:17:46,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:46,486 INFO L225 Difference]: With dead ends: 1007 [2023-12-21 05:17:46,487 INFO L226 Difference]: Without dead ends: 975 [2023-12-21 05:17:46,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=207, Invalid=3575, Unknown=0, NotChecked=0, Total=3782 [2023-12-21 05:17:46,487 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 54 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:46,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1118 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:17:46,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-12-21 05:17:47,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 975. [2023-12-21 05:17:47,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 1.0893223819301847) internal successors, (1061), 974 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:47,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1061 transitions. [2023-12-21 05:17:47,301 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1061 transitions. Word has length 45 [2023-12-21 05:17:47,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:47,301 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1061 transitions. [2023-12-21 05:17:47,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:47,301 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1061 transitions. [2023-12-21 05:17:47,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-21 05:17:47,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:47,302 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:47,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2023-12-21 05:17:47,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2023-12-21 05:17:47,504 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:47,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:47,504 INFO L85 PathProgramCache]: Analyzing trace with hash 370551472, now seen corresponding path program 108 times [2023-12-21 05:17:47,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:47,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050337037] [2023-12-21 05:17:47,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:47,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:47,825 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:17:47,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:47,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050337037] [2023-12-21 05:17:47,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050337037] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:47,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021594176] [2023-12-21 05:17:47,826 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:17:47,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:47,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:47,827 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:17:47,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2023-12-21 05:17:47,876 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-21 05:17:47,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:47,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-21 05:17:47,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:48,260 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:17:48,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:17:48,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021594176] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:48,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:48,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 46 [2023-12-21 05:17:48,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998671042] [2023-12-21 05:17:48,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:48,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-21 05:17:48,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:48,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-21 05:17:48,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1941, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 05:17:48,365 INFO L87 Difference]: Start difference. First operand 975 states and 1061 transitions. Second operand has 46 states, 46 states have (on average 1.391304347826087) internal successors, (64), 46 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:49,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:49,629 INFO L93 Difference]: Finished difference Result 992 states and 1077 transitions. [2023-12-21 05:17:49,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 05:17:49,629 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.391304347826087) internal successors, (64), 46 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-21 05:17:49,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:49,631 INFO L225 Difference]: With dead ends: 992 [2023-12-21 05:17:49,631 INFO L226 Difference]: Without dead ends: 959 [2023-12-21 05:17:49,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=205, Invalid=3217, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 05:17:49,631 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 40 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:49,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 723 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:17:49,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-12-21 05:17:50,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2023-12-21 05:17:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 958 states have (on average 1.0897703549060542) internal successors, (1044), 958 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:50,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1044 transitions. [2023-12-21 05:17:50,430 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1044 transitions. Word has length 45 [2023-12-21 05:17:50,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:50,430 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1044 transitions. [2023-12-21 05:17:50,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.391304347826087) internal successors, (64), 46 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:50,430 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1044 transitions. [2023-12-21 05:17:50,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-21 05:17:50,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:50,431 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:50,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2023-12-21 05:17:50,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2023-12-21 05:17:50,635 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:50,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:50,636 INFO L85 PathProgramCache]: Analyzing trace with hash -567152820, now seen corresponding path program 109 times [2023-12-21 05:17:50,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:50,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997561182] [2023-12-21 05:17:50,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:50,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:50,903 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:17:50,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:50,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997561182] [2023-12-21 05:17:50,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997561182] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:50,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795547711] [2023-12-21 05:17:50,903 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:17:50,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:50,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:50,904 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:17:50,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2023-12-21 05:17:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:50,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-21 05:17:50,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:51,382 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:17:51,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:51,506 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:17:51,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795547711] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:51,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:51,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 44 [2023-12-21 05:17:51,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634145473] [2023-12-21 05:17:51,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:51,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 05:17:51,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:51,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 05:17:51,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1764, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 05:17:51,508 INFO L87 Difference]: Start difference. First operand 959 states and 1044 transitions. Second operand has 44 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 44 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:52,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:52,717 INFO L93 Difference]: Finished difference Result 987 states and 1075 transitions. [2023-12-21 05:17:52,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 05:17:52,717 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 44 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-21 05:17:52,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:52,718 INFO L225 Difference]: With dead ends: 987 [2023-12-21 05:17:52,718 INFO L226 Difference]: Without dead ends: 982 [2023-12-21 05:17:52,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=203, Invalid=2877, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 05:17:52,719 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 25 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:52,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 488 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:17:52,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2023-12-21 05:17:53,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 973. [2023-12-21 05:17:53,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 972 states have (on average 1.0905349794238683) internal successors, (1060), 972 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:53,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1060 transitions. [2023-12-21 05:17:53,533 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1060 transitions. Word has length 45 [2023-12-21 05:17:53,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:53,533 INFO L495 AbstractCegarLoop]: Abstraction has 973 states and 1060 transitions. [2023-12-21 05:17:53,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 44 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:53,533 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1060 transitions. [2023-12-21 05:17:53,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-21 05:17:53,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:53,534 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:53,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2023-12-21 05:17:53,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2023-12-21 05:17:53,738 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:53,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:53,738 INFO L85 PathProgramCache]: Analyzing trace with hash -408565190, now seen corresponding path program 110 times [2023-12-21 05:17:53,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:53,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330994842] [2023-12-21 05:17:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:53,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:17:54,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:54,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330994842] [2023-12-21 05:17:54,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330994842] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:54,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244174808] [2023-12-21 05:17:54,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:17:54,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:54,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:54,263 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:17:54,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2023-12-21 05:17:54,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:17:54,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:54,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 05:17:54,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:17:55,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:17:56,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244174808] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:56,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:56,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 74 [2023-12-21 05:17:56,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149191212] [2023-12-21 05:17:56,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:56,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-21 05:17:56,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:56,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-21 05:17:56,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=5197, Unknown=0, NotChecked=0, Total=5402 [2023-12-21 05:17:56,414 INFO L87 Difference]: Start difference. First operand 973 states and 1060 transitions. Second operand has 74 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:01,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:01,228 INFO L93 Difference]: Finished difference Result 1689 states and 1809 transitions. [2023-12-21 05:18:01,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 05:18:01,228 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-21 05:18:01,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:01,258 INFO L225 Difference]: With dead ends: 1689 [2023-12-21 05:18:01,258 INFO L226 Difference]: Without dead ends: 1635 [2023-12-21 05:18:01,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 36 SyntacticMatches, 13 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2195 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2325, Invalid=13425, Unknown=0, NotChecked=0, Total=15750 [2023-12-21 05:18:01,259 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 700 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:01,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1598 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:18:01,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2023-12-21 05:18:02,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1056. [2023-12-21 05:18:02,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1055 states have (on average 1.0900473933649288) internal successors, (1150), 1055 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:02,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1150 transitions. [2023-12-21 05:18:02,204 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1150 transitions. Word has length 46 [2023-12-21 05:18:02,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:02,204 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1150 transitions. [2023-12-21 05:18:02,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:02,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1150 transitions. [2023-12-21 05:18:02,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-21 05:18:02,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:02,205 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:02,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2023-12-21 05:18:02,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119 [2023-12-21 05:18:02,409 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:02,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:02,409 INFO L85 PathProgramCache]: Analyzing trace with hash -467832083, now seen corresponding path program 111 times [2023-12-21 05:18:02,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:02,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901411509] [2023-12-21 05:18:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:02,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:02,920 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:18:02,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:02,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901411509] [2023-12-21 05:18:02,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901411509] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:02,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129448839] [2023-12-21 05:18:02,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:18:02,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:02,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:02,921 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:18:02,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2023-12-21 05:18:02,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-12-21 05:18:02,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:02,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 05:18:02,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:04,090 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:18:04,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:05,078 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:18:05,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129448839] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:05,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:05,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 74 [2023-12-21 05:18:05,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394026635] [2023-12-21 05:18:05,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:05,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-21 05:18:05,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:05,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-21 05:18:05,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=5198, Unknown=0, NotChecked=0, Total=5402 [2023-12-21 05:18:05,080 INFO L87 Difference]: Start difference. First operand 1056 states and 1150 transitions. Second operand has 74 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:09,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:09,078 INFO L93 Difference]: Finished difference Result 1116 states and 1217 transitions. [2023-12-21 05:18:09,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-21 05:18:09,079 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-21 05:18:09,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:09,080 INFO L225 Difference]: With dead ends: 1116 [2023-12-21 05:18:09,080 INFO L226 Difference]: Without dead ends: 1089 [2023-12-21 05:18:09,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 35 SyntacticMatches, 14 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1709 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=957, Invalid=11699, Unknown=0, NotChecked=0, Total=12656 [2023-12-21 05:18:09,081 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 1090 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 2761 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:09,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 2738 Invalid, 2876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2761 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 05:18:09,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2023-12-21 05:18:10,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1063. [2023-12-21 05:18:10,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 1.0894538606403013) internal successors, (1157), 1062 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:10,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1157 transitions. [2023-12-21 05:18:10,042 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1157 transitions. Word has length 46 [2023-12-21 05:18:10,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:10,042 INFO L495 AbstractCegarLoop]: Abstraction has 1063 states and 1157 transitions. [2023-12-21 05:18:10,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:10,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1157 transitions. [2023-12-21 05:18:10,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-21 05:18:10,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:10,044 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:10,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2023-12-21 05:18:10,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:10,247 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:10,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:10,247 INFO L85 PathProgramCache]: Analyzing trace with hash -372675909, now seen corresponding path program 112 times [2023-12-21 05:18:10,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:10,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794125010] [2023-12-21 05:18:10,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:10,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-21 05:18:10,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:10,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794125010] [2023-12-21 05:18:10,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794125010] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:10,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666969755] [2023-12-21 05:18:10,376 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:18:10,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:10,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:10,377 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:18:10,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2023-12-21 05:18:10,424 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:18:10,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:10,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 05:18:10,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-21 05:18:10,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-21 05:18:10,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666969755] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:10,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:10,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 28 [2023-12-21 05:18:10,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545662878] [2023-12-21 05:18:10,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:10,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 05:18:10,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:10,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 05:18:10,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2023-12-21 05:18:10,656 INFO L87 Difference]: Start difference. First operand 1063 states and 1157 transitions. Second operand has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:12,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:12,083 INFO L93 Difference]: Finished difference Result 1160 states and 1271 transitions. [2023-12-21 05:18:12,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-21 05:18:12,083 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-21 05:18:12,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:12,084 INFO L225 Difference]: With dead ends: 1160 [2023-12-21 05:18:12,084 INFO L226 Difference]: Without dead ends: 1143 [2023-12-21 05:18:12,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 68 SyntacticMatches, 14 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=719, Invalid=2251, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 05:18:12,090 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 100 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:12,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 189 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:18:12,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2023-12-21 05:18:13,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1109. [2023-12-21 05:18:13,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 1108 states have (on average 1.0992779783393503) internal successors, (1218), 1108 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:13,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1218 transitions. [2023-12-21 05:18:13,114 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1218 transitions. Word has length 46 [2023-12-21 05:18:13,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:13,114 INFO L495 AbstractCegarLoop]: Abstraction has 1109 states and 1218 transitions. [2023-12-21 05:18:13,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:13,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1218 transitions. [2023-12-21 05:18:13,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-21 05:18:13,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:13,115 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:13,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2023-12-21 05:18:13,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:13,320 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:13,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:13,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1348686610, now seen corresponding path program 113 times [2023-12-21 05:18:13,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:13,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285872969] [2023-12-21 05:18:13,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:13,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:13,453 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-21 05:18:13,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:13,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285872969] [2023-12-21 05:18:13,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285872969] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:13,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346868680] [2023-12-21 05:18:13,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:18:13,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:13,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:13,454 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:18:13,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2023-12-21 05:18:13,502 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-21 05:18:13,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:13,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 05:18:13,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:13,630 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-21 05:18:13,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-21 05:18:13,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346868680] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:13,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:13,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 28 [2023-12-21 05:18:13,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692615440] [2023-12-21 05:18:13,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:13,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 05:18:13,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:13,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 05:18:13,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2023-12-21 05:18:13,722 INFO L87 Difference]: Start difference. First operand 1109 states and 1218 transitions. Second operand has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:15,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:15,164 INFO L93 Difference]: Finished difference Result 1500 states and 1682 transitions. [2023-12-21 05:18:15,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-21 05:18:15,164 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-21 05:18:15,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:15,165 INFO L225 Difference]: With dead ends: 1500 [2023-12-21 05:18:15,165 INFO L226 Difference]: Without dead ends: 1265 [2023-12-21 05:18:15,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 68 SyntacticMatches, 14 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=719, Invalid=2251, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 05:18:15,166 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 93 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:15,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 117 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:18:15,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2023-12-21 05:18:16,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1251. [2023-12-21 05:18:16,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1250 states have (on average 1.1) internal successors, (1375), 1250 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:16,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1375 transitions. [2023-12-21 05:18:16,309 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1375 transitions. Word has length 46 [2023-12-21 05:18:16,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:16,309 INFO L495 AbstractCegarLoop]: Abstraction has 1251 states and 1375 transitions. [2023-12-21 05:18:16,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:16,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1375 transitions. [2023-12-21 05:18:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 05:18:16,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:16,310 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:16,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2023-12-21 05:18:16,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2023-12-21 05:18:16,515 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:16,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:16,515 INFO L85 PathProgramCache]: Analyzing trace with hash 2121799353, now seen corresponding path program 114 times [2023-12-21 05:18:16,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:16,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322246260] [2023-12-21 05:18:16,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:16,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:18:17,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:17,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322246260] [2023-12-21 05:18:17,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322246260] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:17,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558862006] [2023-12-21 05:18:17,088 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:18:17,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:17,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:17,090 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:18:17,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2023-12-21 05:18:17,140 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-12-21 05:18:17,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:17,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-21 05:18:17,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:18:17,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:18:17,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558862006] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:17,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:17,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 59 [2023-12-21 05:18:17,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913104737] [2023-12-21 05:18:17,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:17,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-21 05:18:17,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:17,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-21 05:18:17,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=3281, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 05:18:17,787 INFO L87 Difference]: Start difference. First operand 1251 states and 1375 transitions. Second operand has 59 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 59 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:20,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:20,120 INFO L93 Difference]: Finished difference Result 1342 states and 1475 transitions. [2023-12-21 05:18:20,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 05:18:20,121 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 59 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-21 05:18:20,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:20,122 INFO L225 Difference]: With dead ends: 1342 [2023-12-21 05:18:20,122 INFO L226 Difference]: Without dead ends: 1334 [2023-12-21 05:18:20,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=226, Invalid=5780, Unknown=0, NotChecked=0, Total=6006 [2023-12-21 05:18:20,122 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 136 mSDsluCounter, 2453 mSDsCounter, 0 mSdLazyCounter, 2986 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 2987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:20,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 2509 Invalid, 2987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2986 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 05:18:20,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2023-12-21 05:18:21,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1259. [2023-12-21 05:18:21,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1258 states have (on average 1.1001589825119238) internal successors, (1384), 1258 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:21,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1384 transitions. [2023-12-21 05:18:21,275 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1384 transitions. Word has length 47 [2023-12-21 05:18:21,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:21,275 INFO L495 AbstractCegarLoop]: Abstraction has 1259 states and 1384 transitions. [2023-12-21 05:18:21,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 59 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:21,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1384 transitions. [2023-12-21 05:18:21,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 05:18:21,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:21,276 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:21,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2023-12-21 05:18:21,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2023-12-21 05:18:21,481 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:21,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:21,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1337160519, now seen corresponding path program 115 times [2023-12-21 05:18:21,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:21,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914539565] [2023-12-21 05:18:21,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:21,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:22,063 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:18:22,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:22,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914539565] [2023-12-21 05:18:22,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914539565] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:22,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158940336] [2023-12-21 05:18:22,063 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:18:22,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:22,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:22,065 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:18:22,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2023-12-21 05:18:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:22,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-21 05:18:22,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:22,691 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:18:22,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:18:22,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158940336] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:22,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:22,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 57 [2023-12-21 05:18:22,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392178612] [2023-12-21 05:18:22,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:22,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-21 05:18:22,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:22,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-21 05:18:22,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=3052, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 05:18:22,825 INFO L87 Difference]: Start difference. First operand 1259 states and 1384 transitions. Second operand has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:24,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:24,953 INFO L93 Difference]: Finished difference Result 1281 states and 1405 transitions. [2023-12-21 05:18:24,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 05:18:24,953 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-21 05:18:24,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:24,954 INFO L225 Difference]: With dead ends: 1281 [2023-12-21 05:18:24,954 INFO L226 Difference]: Without dead ends: 1251 [2023-12-21 05:18:24,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=224, Invalid=5326, Unknown=0, NotChecked=0, Total=5550 [2023-12-21 05:18:24,954 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 113 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 2465 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 2466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:24,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 2088 Invalid, 2466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2465 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 05:18:24,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2023-12-21 05:18:26,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1251. [2023-12-21 05:18:26,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1250 states have (on average 1.1) internal successors, (1375), 1250 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:26,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1375 transitions. [2023-12-21 05:18:26,127 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1375 transitions. Word has length 47 [2023-12-21 05:18:26,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:26,127 INFO L495 AbstractCegarLoop]: Abstraction has 1251 states and 1375 transitions. [2023-12-21 05:18:26,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:26,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1375 transitions. [2023-12-21 05:18:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 05:18:26,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:26,129 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:26,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2023-12-21 05:18:26,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2023-12-21 05:18:26,334 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:26,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:26,334 INFO L85 PathProgramCache]: Analyzing trace with hash 166624953, now seen corresponding path program 116 times [2023-12-21 05:18:26,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:26,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293583197] [2023-12-21 05:18:26,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:26,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:26,843 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:18:26,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:26,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293583197] [2023-12-21 05:18:26,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293583197] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:26,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323456193] [2023-12-21 05:18:26,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:18:26,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:26,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:26,845 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:18:26,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2023-12-21 05:18:26,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:18:26,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:26,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-21 05:18:26,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:27,455 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:18:27,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:27,587 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:18:27,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323456193] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:27,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:27,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 55 [2023-12-21 05:18:27,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077518827] [2023-12-21 05:18:27,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:27,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-21 05:18:27,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:27,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-21 05:18:27,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2831, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 05:18:27,588 INFO L87 Difference]: Start difference. First operand 1251 states and 1375 transitions. Second operand has 55 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 55 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:29,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:29,551 INFO L93 Difference]: Finished difference Result 1272 states and 1395 transitions. [2023-12-21 05:18:29,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 05:18:29,551 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 55 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-21 05:18:29,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:29,552 INFO L225 Difference]: With dead ends: 1272 [2023-12-21 05:18:29,552 INFO L226 Difference]: Without dead ends: 1241 [2023-12-21 05:18:29,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=222, Invalid=4890, Unknown=0, NotChecked=0, Total=5112 [2023-12-21 05:18:29,553 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 96 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 2074 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 2075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:29,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 1687 Invalid, 2075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2074 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 05:18:29,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2023-12-21 05:18:30,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1241. [2023-12-21 05:18:30,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 1240 states have (on average 1.1) internal successors, (1364), 1240 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:30,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1364 transitions. [2023-12-21 05:18:30,682 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1364 transitions. Word has length 47 [2023-12-21 05:18:30,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:30,683 INFO L495 AbstractCegarLoop]: Abstraction has 1241 states and 1364 transitions. [2023-12-21 05:18:30,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 55 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:30,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1364 transitions. [2023-12-21 05:18:30,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 05:18:30,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:30,684 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:30,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2023-12-21 05:18:30,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2023-12-21 05:18:30,889 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:30,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:30,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2079447879, now seen corresponding path program 117 times [2023-12-21 05:18:30,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:30,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670129132] [2023-12-21 05:18:30,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:30,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:31,376 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:18:31,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:31,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670129132] [2023-12-21 05:18:31,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670129132] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:31,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021606537] [2023-12-21 05:18:31,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:18:31,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:31,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:31,377 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:18:31,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2023-12-21 05:18:31,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-21 05:18:31,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:31,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-21 05:18:31,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:31,964 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:18:31,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:18:32,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021606537] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:32,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:32,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 53 [2023-12-21 05:18:32,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446821013] [2023-12-21 05:18:32,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:32,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-21 05:18:32,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:32,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-21 05:18:32,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2618, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 05:18:32,093 INFO L87 Difference]: Start difference. First operand 1241 states and 1364 transitions. Second operand has 53 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:33,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:33,969 INFO L93 Difference]: Finished difference Result 1261 states and 1383 transitions. [2023-12-21 05:18:33,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 05:18:33,969 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-21 05:18:33,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:33,970 INFO L225 Difference]: With dead ends: 1261 [2023-12-21 05:18:33,970 INFO L226 Difference]: Without dead ends: 1229 [2023-12-21 05:18:33,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=220, Invalid=4472, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 05:18:33,971 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 80 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:33,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1418 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 05:18:33,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2023-12-21 05:18:35,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1229. [2023-12-21 05:18:35,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1228 states have (on average 1.1001628664495113) internal successors, (1351), 1228 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:35,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1351 transitions. [2023-12-21 05:18:35,084 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1351 transitions. Word has length 47 [2023-12-21 05:18:35,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:35,084 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 1351 transitions. [2023-12-21 05:18:35,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:35,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1351 transitions. [2023-12-21 05:18:35,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 05:18:35,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:35,085 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:35,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2023-12-21 05:18:35,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2023-12-21 05:18:35,290 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:35,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:35,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2070616391, now seen corresponding path program 118 times [2023-12-21 05:18:35,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:35,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24813740] [2023-12-21 05:18:35,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:35,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:35,715 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:18:35,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:35,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24813740] [2023-12-21 05:18:35,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24813740] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:35,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195852725] [2023-12-21 05:18:35,716 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:18:35,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:35,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:35,717 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:18:35,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2023-12-21 05:18:35,765 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:18:35,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:35,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 05:18:35,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:36,360 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:18:36,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:18:36,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195852725] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:36,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:36,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 51 [2023-12-21 05:18:36,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754396183] [2023-12-21 05:18:36,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:36,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-21 05:18:36,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:36,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-21 05:18:36,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2413, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 05:18:36,486 INFO L87 Difference]: Start difference. First operand 1229 states and 1351 transitions. Second operand has 51 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 51 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:38,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:38,274 INFO L93 Difference]: Finished difference Result 1248 states and 1369 transitions. [2023-12-21 05:18:38,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 05:18:38,275 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 51 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-21 05:18:38,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:38,276 INFO L225 Difference]: With dead ends: 1248 [2023-12-21 05:18:38,276 INFO L226 Difference]: Without dead ends: 1215 [2023-12-21 05:18:38,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=218, Invalid=4072, Unknown=0, NotChecked=0, Total=4290 [2023-12-21 05:18:38,277 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 64 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:38,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1100 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:18:38,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-12-21 05:18:39,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1215. [2023-12-21 05:18:39,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1214 states have (on average 1.100494233937397) internal successors, (1336), 1214 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:39,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1336 transitions. [2023-12-21 05:18:39,398 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1336 transitions. Word has length 47 [2023-12-21 05:18:39,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:39,398 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 1336 transitions. [2023-12-21 05:18:39,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 51 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:39,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1336 transitions. [2023-12-21 05:18:39,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 05:18:39,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:39,399 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:39,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2023-12-21 05:18:39,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2023-12-21 05:18:39,604 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:39,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:39,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1834990777, now seen corresponding path program 119 times [2023-12-21 05:18:39,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:39,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366478417] [2023-12-21 05:18:39,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:39,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:39,976 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:18:39,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:39,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366478417] [2023-12-21 05:18:39,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366478417] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:39,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089099489] [2023-12-21 05:18:39,977 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:18:39,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:39,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:39,978 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:18:39,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2023-12-21 05:18:40,042 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-21 05:18:40,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:40,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-21 05:18:40,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:18:40,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:18:40,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089099489] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:40,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:40,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 49 [2023-12-21 05:18:40,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333164768] [2023-12-21 05:18:40,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:40,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-21 05:18:40,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:40,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-21 05:18:40,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=2216, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 05:18:40,656 INFO L87 Difference]: Start difference. First operand 1215 states and 1336 transitions. Second operand has 49 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 49 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:42,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:42,338 INFO L93 Difference]: Finished difference Result 1233 states and 1353 transitions. [2023-12-21 05:18:42,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 05:18:42,339 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 49 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-21 05:18:42,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:42,340 INFO L225 Difference]: With dead ends: 1233 [2023-12-21 05:18:42,340 INFO L226 Difference]: Without dead ends: 1199 [2023-12-21 05:18:42,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=216, Invalid=3690, Unknown=0, NotChecked=0, Total=3906 [2023-12-21 05:18:42,340 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 47 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:42,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 870 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:18:42,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2023-12-21 05:18:43,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1199. [2023-12-21 05:18:43,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1198 states have (on average 1.1010016694490818) internal successors, (1319), 1198 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:43,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1319 transitions. [2023-12-21 05:18:43,435 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1319 transitions. Word has length 47 [2023-12-21 05:18:43,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:43,435 INFO L495 AbstractCegarLoop]: Abstraction has 1199 states and 1319 transitions. [2023-12-21 05:18:43,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 49 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:43,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1319 transitions. [2023-12-21 05:18:43,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 05:18:43,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:43,436 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:43,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2023-12-21 05:18:43,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:43,641 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:43,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:43,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2027422462, now seen corresponding path program 120 times [2023-12-21 05:18:43,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:43,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71905390] [2023-12-21 05:18:43,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:43,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:43,864 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-21 05:18:43,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:43,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71905390] [2023-12-21 05:18:43,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71905390] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:43,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640163840] [2023-12-21 05:18:43,865 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:18:43,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:43,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:43,867 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:18:43,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2023-12-21 05:18:43,915 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-21 05:18:43,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:43,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 05:18:43,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-21 05:18:44,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-21 05:18:44,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640163840] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:44,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:44,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2023-12-21 05:18:44,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508450215] [2023-12-21 05:18:44,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:44,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-21 05:18:44,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:44,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-21 05:18:44,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1849, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 05:18:44,624 INFO L87 Difference]: Start difference. First operand 1199 states and 1319 transitions. Second operand has 45 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:46,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:46,958 INFO L93 Difference]: Finished difference Result 1462 states and 1610 transitions. [2023-12-21 05:18:46,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 05:18:46,958 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-21 05:18:46,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:46,960 INFO L225 Difference]: With dead ends: 1462 [2023-12-21 05:18:46,960 INFO L226 Difference]: Without dead ends: 1383 [2023-12-21 05:18:46,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 62 SyntacticMatches, 7 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=837, Invalid=4565, Unknown=0, NotChecked=0, Total=5402 [2023-12-21 05:18:46,960 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 572 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:46,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 850 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:18:46,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-12-21 05:18:48,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1307. [2023-12-21 05:18:48,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1306 states have (on average 1.0918836140888208) internal successors, (1426), 1306 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:48,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1426 transitions. [2023-12-21 05:18:48,129 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1426 transitions. Word has length 47 [2023-12-21 05:18:48,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:48,129 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 1426 transitions. [2023-12-21 05:18:48,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:48,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1426 transitions. [2023-12-21 05:18:48,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 05:18:48,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:48,130 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:48,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2023-12-21 05:18:48,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:48,335 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:48,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:48,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1528082759, now seen corresponding path program 121 times [2023-12-21 05:18:48,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:48,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588706493] [2023-12-21 05:18:48,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:48,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:48,626 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:18:48,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:48,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588706493] [2023-12-21 05:18:48,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588706493] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:48,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408291509] [2023-12-21 05:18:48,627 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:18:48,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:48,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:48,628 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:18:48,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2023-12-21 05:18:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:48,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-21 05:18:48,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:49,145 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:18:49,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:49,259 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:18:49,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408291509] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:49,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:49,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 47 [2023-12-21 05:18:49,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8431653] [2023-12-21 05:18:49,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:49,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-21 05:18:49,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:49,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-21 05:18:49,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2027, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 05:18:49,260 INFO L87 Difference]: Start difference. First operand 1307 states and 1426 transitions. Second operand has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:50,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:50,967 INFO L93 Difference]: Finished difference Result 1349 states and 1472 transitions. [2023-12-21 05:18:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 05:18:50,968 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-21 05:18:50,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:50,969 INFO L225 Difference]: With dead ends: 1349 [2023-12-21 05:18:50,969 INFO L226 Difference]: Without dead ends: 1314 [2023-12-21 05:18:50,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=3326, Unknown=0, NotChecked=0, Total=3540 [2023-12-21 05:18:50,970 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 39 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:50,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 556 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:18:50,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2023-12-21 05:18:52,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1301. [2023-12-21 05:18:52,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1300 states have (on average 1.093076923076923) internal successors, (1421), 1300 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:52,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1421 transitions. [2023-12-21 05:18:52,171 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1421 transitions. Word has length 47 [2023-12-21 05:18:52,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:52,172 INFO L495 AbstractCegarLoop]: Abstraction has 1301 states and 1421 transitions. [2023-12-21 05:18:52,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:52,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1421 transitions. [2023-12-21 05:18:52,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 05:18:52,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:52,173 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:52,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2023-12-21 05:18:52,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:52,378 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:52,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:52,378 INFO L85 PathProgramCache]: Analyzing trace with hash 670379102, now seen corresponding path program 122 times [2023-12-21 05:18:52,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:52,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035783935] [2023-12-21 05:18:52,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:52,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-21 05:18:52,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:52,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035783935] [2023-12-21 05:18:52,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035783935] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:52,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733393928] [2023-12-21 05:18:52,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:18:52,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:52,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:52,666 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:18:52,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2023-12-21 05:18:52,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:18:52,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:52,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 05:18:52,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-21 05:18:53,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-21 05:18:53,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733393928] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:53,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:53,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2023-12-21 05:18:53,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235842052] [2023-12-21 05:18:53,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:53,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-21 05:18:53,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:53,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-21 05:18:53,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1849, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 05:18:53,542 INFO L87 Difference]: Start difference. First operand 1301 states and 1421 transitions. Second operand has 45 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 45 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:55,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:55,749 INFO L93 Difference]: Finished difference Result 1349 states and 1468 transitions. [2023-12-21 05:18:55,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 05:18:55,750 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 45 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-21 05:18:55,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:55,751 INFO L225 Difference]: With dead ends: 1349 [2023-12-21 05:18:55,751 INFO L226 Difference]: Without dead ends: 1306 [2023-12-21 05:18:55,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 61 SyntacticMatches, 8 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=423, Invalid=3999, Unknown=0, NotChecked=0, Total=4422 [2023-12-21 05:18:55,751 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 520 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:55,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 1381 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:18:55,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2023-12-21 05:18:56,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1301. [2023-12-21 05:18:56,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1300 states have (on average 1.0823076923076924) internal successors, (1407), 1300 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1407 transitions. [2023-12-21 05:18:56,987 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1407 transitions. Word has length 47 [2023-12-21 05:18:56,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:56,987 INFO L495 AbstractCegarLoop]: Abstraction has 1301 states and 1407 transitions. [2023-12-21 05:18:56,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 45 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:56,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1407 transitions. [2023-12-21 05:18:56,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 05:18:56,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:56,988 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:56,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2023-12-21 05:18:57,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:57,194 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:57,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:57,194 INFO L85 PathProgramCache]: Analyzing trace with hash 795995245, now seen corresponding path program 123 times [2023-12-21 05:18:57,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:57,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954597152] [2023-12-21 05:18:57,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:57,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:57,763 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:18:57,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:57,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954597152] [2023-12-21 05:18:57,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954597152] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:57,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680200818] [2023-12-21 05:18:57,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:18:57,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:57,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:57,765 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:18:57,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2023-12-21 05:18:57,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-12-21 05:18:57,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:57,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 05:18:57,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:58,875 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:18:58,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:59,636 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:18:59,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680200818] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:59,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:59,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 79 [2023-12-21 05:18:59,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861688356] [2023-12-21 05:18:59,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:59,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-12-21 05:18:59,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:59,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-12-21 05:18:59,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=5943, Unknown=0, NotChecked=0, Total=6162 [2023-12-21 05:18:59,639 INFO L87 Difference]: Start difference. First operand 1301 states and 1407 transitions. Second operand has 79 states, 79 states have (on average 1.3417721518987342) internal successors, (106), 79 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:05,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:05,686 INFO L93 Difference]: Finished difference Result 2232 states and 2375 transitions. [2023-12-21 05:19:05,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-21 05:19:05,687 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.3417721518987342) internal successors, (106), 79 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-12-21 05:19:05,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:05,689 INFO L225 Difference]: With dead ends: 2232 [2023-12-21 05:19:05,689 INFO L226 Difference]: Without dead ends: 2174 [2023-12-21 05:19:05,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 36 SyntacticMatches, 14 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2544 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2656, Invalid=15434, Unknown=0, NotChecked=0, Total=18090 [2023-12-21 05:19:05,690 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 780 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:05,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1723 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:19:05,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2023-12-21 05:19:07,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 1405. [2023-12-21 05:19:07,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1404 states have (on average 1.081908831908832) internal successors, (1519), 1404 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 1519 transitions. [2023-12-21 05:19:07,065 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 1519 transitions. Word has length 48 [2023-12-21 05:19:07,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:07,065 INFO L495 AbstractCegarLoop]: Abstraction has 1405 states and 1519 transitions. [2023-12-21 05:19:07,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.3417721518987342) internal successors, (106), 79 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:07,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 1519 transitions. [2023-12-21 05:19:07,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 05:19:07,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:07,066 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:07,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2023-12-21 05:19:07,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2023-12-21 05:19:07,271 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:07,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:07,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1041278438, now seen corresponding path program 124 times [2023-12-21 05:19:07,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:07,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603208768] [2023-12-21 05:19:07,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:07,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:19:07,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:07,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603208768] [2023-12-21 05:19:07,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603208768] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:07,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119950701] [2023-12-21 05:19:07,859 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:19:07,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:07,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:07,860 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:19:07,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2023-12-21 05:19:07,910 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:19:07,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:07,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 05:19:07,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:09,203 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:19:09,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:19:10,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119950701] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:10,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:10,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 79 [2023-12-21 05:19:10,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309109896] [2023-12-21 05:19:10,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:10,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-12-21 05:19:10,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:10,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-12-21 05:19:10,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=5944, Unknown=0, NotChecked=0, Total=6162 [2023-12-21 05:19:10,429 INFO L87 Difference]: Start difference. First operand 1405 states and 1519 transitions. Second operand has 79 states, 79 states have (on average 1.3417721518987342) internal successors, (106), 79 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:15,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:15,151 INFO L93 Difference]: Finished difference Result 1470 states and 1592 transitions. [2023-12-21 05:19:15,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-21 05:19:15,152 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.3417721518987342) internal successors, (106), 79 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-12-21 05:19:15,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:15,153 INFO L225 Difference]: With dead ends: 1470 [2023-12-21 05:19:15,153 INFO L226 Difference]: Without dead ends: 1441 [2023-12-21 05:19:15,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 35 SyntacticMatches, 15 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1973 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1071, Invalid=13449, Unknown=0, NotChecked=0, Total=14520 [2023-12-21 05:19:15,154 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 1168 mSDsluCounter, 3300 mSDsCounter, 0 mSdLazyCounter, 3547 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 3365 SdHoareTripleChecker+Invalid, 3678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 3547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:15,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 3365 Invalid, 3678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 3547 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 05:19:15,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2023-12-21 05:19:16,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1413. [2023-12-21 05:19:16,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1412 states have (on average 1.0814447592067988) internal successors, (1527), 1412 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:16,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1527 transitions. [2023-12-21 05:19:16,545 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1527 transitions. Word has length 48 [2023-12-21 05:19:16,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:16,545 INFO L495 AbstractCegarLoop]: Abstraction has 1413 states and 1527 transitions. [2023-12-21 05:19:16,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.3417721518987342) internal successors, (106), 79 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:16,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1527 transitions. [2023-12-21 05:19:16,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 05:19:16,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:16,547 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:16,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2023-12-21 05:19:16,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2023-12-21 05:19:16,751 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:16,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:16,752 INFO L85 PathProgramCache]: Analyzing trace with hash 193950094, now seen corresponding path program 125 times [2023-12-21 05:19:16,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:16,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487909801] [2023-12-21 05:19:16,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:16,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:16,884 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-21 05:19:16,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:16,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487909801] [2023-12-21 05:19:16,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487909801] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:16,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565500045] [2023-12-21 05:19:16,885 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:19:16,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:16,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:16,888 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:19:16,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2023-12-21 05:19:16,942 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-21 05:19:16,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:16,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 05:19:16,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-21 05:19:17,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-21 05:19:17,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565500045] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:17,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:17,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2023-12-21 05:19:17,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507923424] [2023-12-21 05:19:17,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:17,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 05:19:17,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:17,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 05:19:17,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=531, Unknown=0, NotChecked=0, Total=812 [2023-12-21 05:19:17,142 INFO L87 Difference]: Start difference. First operand 1413 states and 1527 transitions. Second operand has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:18,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:18,818 INFO L93 Difference]: Finished difference Result 1601 states and 1742 transitions. [2023-12-21 05:19:18,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 05:19:18,819 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-12-21 05:19:18,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:18,820 INFO L225 Difference]: With dead ends: 1601 [2023-12-21 05:19:18,820 INFO L226 Difference]: Without dead ends: 1401 [2023-12-21 05:19:18,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 70 SyntacticMatches, 16 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1358 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1093, Invalid=2099, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 05:19:18,820 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 102 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:18,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 194 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:19:18,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2023-12-21 05:19:20,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1401. [2023-12-21 05:19:20,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1400 states have (on average 1.0792857142857142) internal successors, (1511), 1400 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:20,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1511 transitions. [2023-12-21 05:19:20,180 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1511 transitions. Word has length 48 [2023-12-21 05:19:20,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:20,180 INFO L495 AbstractCegarLoop]: Abstraction has 1401 states and 1511 transitions. [2023-12-21 05:19:20,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:20,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1511 transitions. [2023-12-21 05:19:20,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 05:19:20,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:20,181 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:20,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2023-12-21 05:19:20,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:20,386 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:20,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:20,386 INFO L85 PathProgramCache]: Analyzing trace with hash 188884951, now seen corresponding path program 126 times [2023-12-21 05:19:20,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:20,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010736554] [2023-12-21 05:19:20,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:20,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:20,541 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-21 05:19:20,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:20,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010736554] [2023-12-21 05:19:20,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010736554] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:20,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356584330] [2023-12-21 05:19:20,541 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:19:20,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:20,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:20,542 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:19:20,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2023-12-21 05:19:20,592 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-21 05:19:20,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:20,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 05:19:20,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-21 05:19:20,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-21 05:19:20,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356584330] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:20,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:20,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2023-12-21 05:19:20,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806709509] [2023-12-21 05:19:20,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:20,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 05:19:20,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:20,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 05:19:20,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=531, Unknown=0, NotChecked=0, Total=812 [2023-12-21 05:19:20,800 INFO L87 Difference]: Start difference. First operand 1401 states and 1511 transitions. Second operand has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:22,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:22,713 INFO L93 Difference]: Finished difference Result 1441 states and 1551 transitions. [2023-12-21 05:19:22,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 05:19:22,714 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-12-21 05:19:22,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:22,715 INFO L225 Difference]: With dead ends: 1441 [2023-12-21 05:19:22,715 INFO L226 Difference]: Without dead ends: 1436 [2023-12-21 05:19:22,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 70 SyntacticMatches, 16 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1358 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1093, Invalid=2099, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 05:19:22,716 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 102 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:22,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 219 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:19:22,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2023-12-21 05:19:24,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1402. [2023-12-21 05:19:24,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 1.0792291220556745) internal successors, (1512), 1401 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:24,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 1512 transitions. [2023-12-21 05:19:24,108 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 1512 transitions. Word has length 48 [2023-12-21 05:19:24,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:24,108 INFO L495 AbstractCegarLoop]: Abstraction has 1402 states and 1512 transitions. [2023-12-21 05:19:24,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:24,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 1512 transitions. [2023-12-21 05:19:24,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 05:19:24,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:24,109 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:24,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2023-12-21 05:19:24,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2023-12-21 05:19:24,315 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:24,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:24,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1524831532, now seen corresponding path program 127 times [2023-12-21 05:19:24,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:24,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604712455] [2023-12-21 05:19:24,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:24,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:24,963 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:19:24,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:24,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604712455] [2023-12-21 05:19:24,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604712455] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:24,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391933426] [2023-12-21 05:19:24,963 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:19:24,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:24,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:24,964 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:19:24,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2023-12-21 05:19:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:25,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 86 conjunts are in the unsatisfiable core [2023-12-21 05:19:25,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:19:25,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:19:25,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391933426] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:25,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:25,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 62 [2023-12-21 05:19:25,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32096581] [2023-12-21 05:19:25,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:25,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-21 05:19:25,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:25,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-21 05:19:25,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=3634, Unknown=0, NotChecked=0, Total=3782 [2023-12-21 05:19:25,859 INFO L87 Difference]: Start difference. First operand 1402 states and 1512 transitions. Second operand has 62 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:28,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:28,313 INFO L93 Difference]: Finished difference Result 1496 states and 1615 transitions. [2023-12-21 05:19:28,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 05:19:28,313 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-21 05:19:28,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:28,315 INFO L225 Difference]: With dead ends: 1496 [2023-12-21 05:19:28,315 INFO L226 Difference]: Without dead ends: 1488 [2023-12-21 05:19:28,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=237, Invalid=6405, Unknown=0, NotChecked=0, Total=6642 [2023-12-21 05:19:28,315 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 141 mSDsluCounter, 2818 mSDsCounter, 0 mSdLazyCounter, 3551 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 2876 SdHoareTripleChecker+Invalid, 3552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:28,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 2876 Invalid, 3552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3551 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 05:19:28,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2023-12-21 05:19:29,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1410. [2023-12-21 05:19:29,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1409 states have (on average 1.0794889992902768) internal successors, (1521), 1409 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:29,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1521 transitions. [2023-12-21 05:19:29,768 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1521 transitions. Word has length 49 [2023-12-21 05:19:29,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:29,768 INFO L495 AbstractCegarLoop]: Abstraction has 1410 states and 1521 transitions. [2023-12-21 05:19:29,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:29,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1521 transitions. [2023-12-21 05:19:29,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 05:19:29,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:29,770 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:29,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2023-12-21 05:19:29,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2023-12-21 05:19:29,975 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:29,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:29,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1744410736, now seen corresponding path program 128 times [2023-12-21 05:19:29,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:29,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378985300] [2023-12-21 05:19:29,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:29,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:19:30,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:30,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378985300] [2023-12-21 05:19:30,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378985300] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:30,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450110082] [2023-12-21 05:19:30,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:19:30,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:30,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:30,512 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:19:30,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2023-12-21 05:19:30,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:19:30,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:30,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-21 05:19:30,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:19:31,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:31,235 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:19:31,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450110082] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:31,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:31,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 60 [2023-12-21 05:19:31,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029621278] [2023-12-21 05:19:31,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:31,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-21 05:19:31,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:31,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-21 05:19:31,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=3393, Unknown=0, NotChecked=0, Total=3540 [2023-12-21 05:19:31,237 INFO L87 Difference]: Start difference. First operand 1410 states and 1521 transitions. Second operand has 60 states, 60 states have (on average 1.3) internal successors, (78), 60 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:33,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:33,839 INFO L93 Difference]: Finished difference Result 1433 states and 1543 transitions. [2023-12-21 05:19:33,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 05:19:33,840 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.3) internal successors, (78), 60 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-21 05:19:33,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:33,841 INFO L225 Difference]: With dead ends: 1433 [2023-12-21 05:19:33,841 INFO L226 Difference]: Without dead ends: 1402 [2023-12-21 05:19:33,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=235, Invalid=5927, Unknown=0, NotChecked=0, Total=6162 [2023-12-21 05:19:33,842 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 117 mSDsluCounter, 2630 mSDsCounter, 0 mSdLazyCounter, 3217 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 3218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:33,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 2686 Invalid, 3218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3217 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 05:19:33,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2023-12-21 05:19:35,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1402. [2023-12-21 05:19:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 1.0792291220556745) internal successors, (1512), 1401 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:35,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 1512 transitions. [2023-12-21 05:19:35,202 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 1512 transitions. Word has length 49 [2023-12-21 05:19:35,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:35,202 INFO L495 AbstractCegarLoop]: Abstraction has 1402 states and 1512 transitions. [2023-12-21 05:19:35,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.3) internal successors, (78), 60 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:35,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 1512 transitions. [2023-12-21 05:19:35,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 05:19:35,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:35,203 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:35,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2023-12-21 05:19:35,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:35,416 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:35,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:35,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1375195436, now seen corresponding path program 129 times [2023-12-21 05:19:35,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:35,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302903530] [2023-12-21 05:19:35,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:35,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:35,918 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:19:35,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:35,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302903530] [2023-12-21 05:19:35,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302903530] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:35,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427669707] [2023-12-21 05:19:35,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:19:35,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:35,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:35,920 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:19:35,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2023-12-21 05:19:35,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-21 05:19:35,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:35,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-21 05:19:35,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:36,493 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:19:36,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:36,635 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:19:36,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427669707] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:36,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:36,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 58 [2023-12-21 05:19:36,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742517464] [2023-12-21 05:19:36,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:36,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-21 05:19:36,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:36,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-21 05:19:36,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=3160, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 05:19:36,637 INFO L87 Difference]: Start difference. First operand 1402 states and 1512 transitions. Second operand has 58 states, 58 states have (on average 1.3103448275862069) internal successors, (76), 58 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:38,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:38,880 INFO L93 Difference]: Finished difference Result 1424 states and 1533 transitions. [2023-12-21 05:19:38,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 05:19:38,880 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.3103448275862069) internal successors, (76), 58 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-21 05:19:38,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:38,881 INFO L225 Difference]: With dead ends: 1424 [2023-12-21 05:19:38,881 INFO L226 Difference]: Without dead ends: 1392 [2023-12-21 05:19:38,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=233, Invalid=5467, Unknown=0, NotChecked=0, Total=5700 [2023-12-21 05:19:38,882 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 102 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:38,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 2052 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 05:19:38,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2023-12-21 05:19:40,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1392. [2023-12-21 05:19:40,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 1.0790797987059668) internal successors, (1501), 1391 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:40,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1501 transitions. [2023-12-21 05:19:40,248 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1501 transitions. Word has length 49 [2023-12-21 05:19:40,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:40,248 INFO L495 AbstractCegarLoop]: Abstraction has 1392 states and 1501 transitions. [2023-12-21 05:19:40,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.3103448275862069) internal successors, (76), 58 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:40,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1501 transitions. [2023-12-21 05:19:40,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 05:19:40,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:40,250 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:40,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2023-12-21 05:19:40,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:40,454 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:40,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:40,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1421687696, now seen corresponding path program 130 times [2023-12-21 05:19:40,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:40,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305390057] [2023-12-21 05:19:40,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:40,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:41,054 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:19:41,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:41,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305390057] [2023-12-21 05:19:41,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305390057] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:41,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482088207] [2023-12-21 05:19:41,054 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:19:41,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:41,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:41,055 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:19:41,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2023-12-21 05:19:41,123 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:19:41,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:41,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-21 05:19:41,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:19:41,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:19:41,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482088207] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:41,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:41,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 56 [2023-12-21 05:19:41,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55488806] [2023-12-21 05:19:41,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:41,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-21 05:19:41,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:41,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-21 05:19:41,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=2935, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 05:19:41,839 INFO L87 Difference]: Start difference. First operand 1392 states and 1501 transitions. Second operand has 56 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 56 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:44,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:44,162 INFO L93 Difference]: Finished difference Result 1413 states and 1521 transitions. [2023-12-21 05:19:44,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 05:19:44,162 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 56 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-21 05:19:44,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:44,163 INFO L225 Difference]: With dead ends: 1413 [2023-12-21 05:19:44,163 INFO L226 Difference]: Without dead ends: 1380 [2023-12-21 05:19:44,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=231, Invalid=5025, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 05:19:44,164 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 86 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:44,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1773 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 05:19:44,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2023-12-21 05:19:45,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1380. [2023-12-21 05:19:45,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 1.079042784626541) internal successors, (1488), 1379 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:45,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 1488 transitions. [2023-12-21 05:19:45,533 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 1488 transitions. Word has length 49 [2023-12-21 05:19:45,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:45,533 INFO L495 AbstractCegarLoop]: Abstraction has 1380 states and 1488 transitions. [2023-12-21 05:19:45,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 56 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:45,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 1488 transitions. [2023-12-21 05:19:45,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 05:19:45,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:45,535 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:45,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Forceful destruction successful, exit code 0 [2023-12-21 05:19:45,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2023-12-21 05:19:45,739 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:45,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:45,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1545956652, now seen corresponding path program 131 times [2023-12-21 05:19:45,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:45,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787540985] [2023-12-21 05:19:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:45,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:46,219 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:19:46,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:46,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787540985] [2023-12-21 05:19:46,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787540985] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:46,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631981902] [2023-12-21 05:19:46,219 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:19:46,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:46,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:46,228 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:19:46,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2023-12-21 05:19:46,279 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-21 05:19:46,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:46,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-21 05:19:46,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:19:46,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:46,884 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:19:46,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631981902] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:46,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:46,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 54 [2023-12-21 05:19:46,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379250998] [2023-12-21 05:19:46,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:46,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-21 05:19:46,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:46,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-21 05:19:46,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=2718, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 05:19:46,886 INFO L87 Difference]: Start difference. First operand 1380 states and 1488 transitions. Second operand has 54 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:49,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:49,016 INFO L93 Difference]: Finished difference Result 1400 states and 1507 transitions. [2023-12-21 05:19:49,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 05:19:49,016 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-21 05:19:49,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:49,017 INFO L225 Difference]: With dead ends: 1400 [2023-12-21 05:19:49,017 INFO L226 Difference]: Without dead ends: 1366 [2023-12-21 05:19:49,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=229, Invalid=4601, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 05:19:49,018 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 72 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:49,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1226 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 05:19:49,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2023-12-21 05:19:50,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1366. [2023-12-21 05:19:50,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1365 states have (on average 1.079120879120879) internal successors, (1473), 1365 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:50,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 1473 transitions. [2023-12-21 05:19:50,375 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 1473 transitions. Word has length 49 [2023-12-21 05:19:50,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:50,375 INFO L495 AbstractCegarLoop]: Abstraction has 1366 states and 1473 transitions. [2023-12-21 05:19:50,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:50,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 1473 transitions. [2023-12-21 05:19:50,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 05:19:50,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:50,376 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:50,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2023-12-21 05:19:50,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:50,581 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:50,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:50,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1060843408, now seen corresponding path program 132 times [2023-12-21 05:19:50,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:50,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957208155] [2023-12-21 05:19:50,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:50,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:50,959 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:19:50,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:50,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957208155] [2023-12-21 05:19:50,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957208155] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:50,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469339390] [2023-12-21 05:19:50,959 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:19:50,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:50,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:50,960 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:19:50,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2023-12-21 05:19:51,010 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-21 05:19:51,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:51,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 05:19:51,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:51,527 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:19:51,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:51,657 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:19:51,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469339390] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:51,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:51,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 52 [2023-12-21 05:19:51,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854339988] [2023-12-21 05:19:51,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:51,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-21 05:19:51,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:51,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-21 05:19:51,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2509, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 05:19:51,658 INFO L87 Difference]: Start difference. First operand 1366 states and 1473 transitions. Second operand has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 52 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:53,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:53,696 INFO L93 Difference]: Finished difference Result 1385 states and 1491 transitions. [2023-12-21 05:19:53,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 05:19:53,696 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 52 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-21 05:19:53,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:53,698 INFO L225 Difference]: With dead ends: 1385 [2023-12-21 05:19:53,698 INFO L226 Difference]: Without dead ends: 1350 [2023-12-21 05:19:53,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=227, Invalid=4195, Unknown=0, NotChecked=0, Total=4422 [2023-12-21 05:19:53,698 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 55 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:53,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 938 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:19:53,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2023-12-21 05:19:55,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1350. [2023-12-21 05:19:55,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 1.0793180133432172) internal successors, (1456), 1349 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:55,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1456 transitions. [2023-12-21 05:19:55,022 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1456 transitions. Word has length 49 [2023-12-21 05:19:55,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:55,022 INFO L495 AbstractCegarLoop]: Abstraction has 1350 states and 1456 transitions. [2023-12-21 05:19:55,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 52 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:55,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1456 transitions. [2023-12-21 05:19:55,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 05:19:55,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:55,024 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:55,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2023-12-21 05:19:55,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:55,229 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:55,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:55,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1261168940, now seen corresponding path program 133 times [2023-12-21 05:19:55,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:55,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851319828] [2023-12-21 05:19:55,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:55,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:55,618 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:19:55,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:55,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851319828] [2023-12-21 05:19:55,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851319828] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:55,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79082177] [2023-12-21 05:19:55,618 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:19:55,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:55,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:55,619 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:19:55,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2023-12-21 05:19:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:55,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-21 05:19:55,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:19:56,134 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:56,221 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:19:56,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79082177] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:56,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:56,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 50 [2023-12-21 05:19:56,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623834842] [2023-12-21 05:19:56,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:56,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-21 05:19:56,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:56,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-21 05:19:56,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2308, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 05:19:56,223 INFO L87 Difference]: Start difference. First operand 1350 states and 1456 transitions. Second operand has 50 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:57,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:57,979 INFO L93 Difference]: Finished difference Result 1368 states and 1473 transitions. [2023-12-21 05:19:57,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 05:19:57,979 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-21 05:19:57,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:57,980 INFO L225 Difference]: With dead ends: 1368 [2023-12-21 05:19:57,980 INFO L226 Difference]: Without dead ends: 1332 [2023-12-21 05:19:57,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=225, Invalid=3807, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 05:19:57,981 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 40 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:57,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 804 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:19:57,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2023-12-21 05:19:59,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1332. [2023-12-21 05:19:59,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1331 states have (on average 1.0796393688955672) internal successors, (1437), 1331 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:59,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1437 transitions. [2023-12-21 05:19:59,302 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1437 transitions. Word has length 49 [2023-12-21 05:19:59,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:59,302 INFO L495 AbstractCegarLoop]: Abstraction has 1332 states and 1437 transitions. [2023-12-21 05:19:59,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:59,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1437 transitions. [2023-12-21 05:19:59,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 05:19:59,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:59,304 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:59,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2023-12-21 05:19:59,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:59,508 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:59,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:59,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1589658512, now seen corresponding path program 134 times [2023-12-21 05:19:59,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:59,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424714400] [2023-12-21 05:19:59,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:59,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 05:19:59,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:59,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424714400] [2023-12-21 05:19:59,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424714400] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:59,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585978236] [2023-12-21 05:19:59,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:19:59,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:59,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:59,842 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:19:59,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2023-12-21 05:19:59,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:19:59,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:59,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-21 05:19:59,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 05:20:00,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:00,477 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 05:20:00,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585978236] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:00,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:00,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 48 [2023-12-21 05:20:00,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413306057] [2023-12-21 05:20:00,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:00,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 05:20:00,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:00,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 05:20:00,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2115, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 05:20:00,478 INFO L87 Difference]: Start difference. First operand 1332 states and 1437 transitions. Second operand has 48 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:02,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:02,256 INFO L93 Difference]: Finished difference Result 1362 states and 1470 transitions. [2023-12-21 05:20:02,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 05:20:02,257 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-21 05:20:02,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:02,258 INFO L225 Difference]: With dead ends: 1362 [2023-12-21 05:20:02,258 INFO L226 Difference]: Without dead ends: 1357 [2023-12-21 05:20:02,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=223, Invalid=3437, Unknown=0, NotChecked=0, Total=3660 [2023-12-21 05:20:02,259 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 31 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:02,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 495 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:20:02,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2023-12-21 05:20:03,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1347. [2023-12-21 05:20:03,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1346 states have (on average 1.0802377414561664) internal successors, (1454), 1346 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:03,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1454 transitions. [2023-12-21 05:20:03,578 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1454 transitions. Word has length 49 [2023-12-21 05:20:03,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:03,578 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 1454 transitions. [2023-12-21 05:20:03,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:03,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1454 transitions. [2023-12-21 05:20:03,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 05:20:03,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:03,579 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:03,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2023-12-21 05:20:03,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:03,784 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:03,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:03,784 INFO L85 PathProgramCache]: Analyzing trace with hash -530138022, now seen corresponding path program 135 times [2023-12-21 05:20:03,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:03,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398798552] [2023-12-21 05:20:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:03,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:04,415 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 16 proven. 240 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:20:04,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:04,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398798552] [2023-12-21 05:20:04,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398798552] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:04,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391324702] [2023-12-21 05:20:04,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:20:04,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:04,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:04,417 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:20:04,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2023-12-21 05:20:04,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-12-21 05:20:04,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:20:04,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-21 05:20:04,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:05,881 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 16 proven. 240 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:20:05,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:07,048 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 16 proven. 240 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:20:07,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391324702] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:07,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:07,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 84 [2023-12-21 05:20:07,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930711548] [2023-12-21 05:20:07,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:07,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2023-12-21 05:20:07,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:07,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2023-12-21 05:20:07,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=6739, Unknown=0, NotChecked=0, Total=6972 [2023-12-21 05:20:07,049 INFO L87 Difference]: Start difference. First operand 1347 states and 1454 transitions. Second operand has 84 states, 84 states have (on average 1.3214285714285714) internal successors, (111), 84 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:14,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:14,735 INFO L93 Difference]: Finished difference Result 2353 states and 2498 transitions. [2023-12-21 05:20:14,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-21 05:20:14,735 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.3214285714285714) internal successors, (111), 84 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-21 05:20:14,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:14,737 INFO L225 Difference]: With dead ends: 2353 [2023-12-21 05:20:14,738 INFO L226 Difference]: Without dead ends: 2293 [2023-12-21 05:20:14,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 36 SyntacticMatches, 15 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2897 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=3009, Invalid=17583, Unknown=0, NotChecked=0, Total=20592 [2023-12-21 05:20:14,739 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 907 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:14,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 1868 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1677 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 05:20:14,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2023-12-21 05:20:16,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 1452. [2023-12-21 05:20:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1451 states have (on average 1.0799448656099242) internal successors, (1567), 1451 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:16,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1567 transitions. [2023-12-21 05:20:16,218 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1567 transitions. Word has length 50 [2023-12-21 05:20:16,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:16,218 INFO L495 AbstractCegarLoop]: Abstraction has 1452 states and 1567 transitions. [2023-12-21 05:20:16,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.3214285714285714) internal successors, (111), 84 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:16,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1567 transitions. [2023-12-21 05:20:16,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 05:20:16,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:16,219 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:16,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2023-12-21 05:20:16,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2023-12-21 05:20:16,424 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:16,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:16,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1651047347, now seen corresponding path program 136 times [2023-12-21 05:20:16,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:16,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928502219] [2023-12-21 05:20:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:16,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:17,011 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:20:17,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:17,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928502219] [2023-12-21 05:20:17,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928502219] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:17,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245289154] [2023-12-21 05:20:17,012 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:20:17,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:17,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:17,013 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:20:17,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2023-12-21 05:20:17,074 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:20:17,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:20:17,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-21 05:20:17,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:20:18,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:19,424 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 16 proven. 240 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:20:19,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245289154] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:19,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:19,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 84 [2023-12-21 05:20:19,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110801133] [2023-12-21 05:20:19,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:19,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2023-12-21 05:20:19,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:19,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2023-12-21 05:20:19,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=6740, Unknown=0, NotChecked=0, Total=6972 [2023-12-21 05:20:19,426 INFO L87 Difference]: Start difference. First operand 1452 states and 1567 transitions. Second operand has 84 states, 84 states have (on average 1.3214285714285714) internal successors, (111), 84 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:25,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:25,002 INFO L93 Difference]: Finished difference Result 1519 states and 1642 transitions. [2023-12-21 05:20:25,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-21 05:20:25,003 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.3214285714285714) internal successors, (111), 84 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-21 05:20:25,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:25,004 INFO L225 Difference]: With dead ends: 1519 [2023-12-21 05:20:25,004 INFO L226 Difference]: Without dead ends: 1489 [2023-12-21 05:20:25,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 35 SyntacticMatches, 16 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2256 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1191, Invalid=15321, Unknown=0, NotChecked=0, Total=16512 [2023-12-21 05:20:25,007 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 1191 mSDsluCounter, 3823 mSDsCounter, 0 mSdLazyCounter, 4052 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 3891 SdHoareTripleChecker+Invalid, 4199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 4052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:25,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 3891 Invalid, 4199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 4052 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 05:20:25,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2023-12-21 05:20:26,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1460. [2023-12-21 05:20:26,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 1.0795065113091158) internal successors, (1575), 1459 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:26,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 1575 transitions. [2023-12-21 05:20:26,581 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 1575 transitions. Word has length 50 [2023-12-21 05:20:26,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:26,582 INFO L495 AbstractCegarLoop]: Abstraction has 1460 states and 1575 transitions. [2023-12-21 05:20:26,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.3214285714285714) internal successors, (111), 84 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:26,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 1575 transitions. [2023-12-21 05:20:26,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 05:20:26,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:26,589 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:26,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Forceful destruction successful, exit code 0 [2023-12-21 05:20:26,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2023-12-21 05:20:26,793 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:26,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:26,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2063965943, now seen corresponding path program 137 times [2023-12-21 05:20:26,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:26,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644243431] [2023-12-21 05:20:26,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:26,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 37 proven. 44 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-21 05:20:26,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:26,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644243431] [2023-12-21 05:20:26,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644243431] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:26,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593084384] [2023-12-21 05:20:26,957 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:20:26,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:26,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:26,958 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:20:26,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2023-12-21 05:20:27,008 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-21 05:20:27,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:20:27,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 05:20:27,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-21 05:20:27,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-21 05:20:27,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593084384] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:27,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:27,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 31 [2023-12-21 05:20:27,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558833768] [2023-12-21 05:20:27,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:27,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 05:20:27,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:27,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 05:20:27,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930 [2023-12-21 05:20:27,268 INFO L87 Difference]: Start difference. First operand 1460 states and 1575 transitions. Second operand has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:29,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:29,452 INFO L93 Difference]: Finished difference Result 1573 states and 1707 transitions. [2023-12-21 05:20:29,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-21 05:20:29,453 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-21 05:20:29,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:29,454 INFO L225 Difference]: With dead ends: 1573 [2023-12-21 05:20:29,454 INFO L226 Difference]: Without dead ends: 1555 [2023-12-21 05:20:29,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 73 SyntacticMatches, 16 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1010, Invalid=3280, Unknown=0, NotChecked=0, Total=4290 [2023-12-21 05:20:29,455 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 119 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:29,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 159 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:20:29,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2023-12-21 05:20:31,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1512. [2023-12-21 05:20:31,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1511 states have (on average 1.0880211780277962) internal successors, (1644), 1511 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:31,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 1644 transitions. [2023-12-21 05:20:31,066 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 1644 transitions. Word has length 50 [2023-12-21 05:20:31,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:31,066 INFO L495 AbstractCegarLoop]: Abstraction has 1512 states and 1644 transitions. [2023-12-21 05:20:31,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:31,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 1644 transitions. [2023-12-21 05:20:31,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 05:20:31,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:31,067 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:31,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2023-12-21 05:20:31,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2023-12-21 05:20:31,272 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:31,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:31,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1906946510, now seen corresponding path program 138 times [2023-12-21 05:20:31,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:31,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480071495] [2023-12-21 05:20:31,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:31,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:31,432 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 37 proven. 44 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-21 05:20:31,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:31,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480071495] [2023-12-21 05:20:31,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480071495] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:31,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459619134] [2023-12-21 05:20:31,433 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:20:31,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:31,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:31,434 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:20:31,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2023-12-21 05:20:31,485 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-12-21 05:20:31,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:20:31,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 05:20:31,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:31,611 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-21 05:20:31,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-21 05:20:31,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459619134] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:31,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:31,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 31 [2023-12-21 05:20:31,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223473534] [2023-12-21 05:20:31,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:31,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 05:20:31,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:31,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 05:20:31,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930 [2023-12-21 05:20:31,716 INFO L87 Difference]: Start difference. First operand 1512 states and 1644 transitions. Second operand has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:33,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:33,908 INFO L93 Difference]: Finished difference Result 1989 states and 2204 transitions. [2023-12-21 05:20:33,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-21 05:20:33,908 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-21 05:20:33,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:33,910 INFO L225 Difference]: With dead ends: 1989 [2023-12-21 05:20:33,910 INFO L226 Difference]: Without dead ends: 1706 [2023-12-21 05:20:33,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 73 SyntacticMatches, 16 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1010, Invalid=3280, Unknown=0, NotChecked=0, Total=4290 [2023-12-21 05:20:33,911 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 90 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:33,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 235 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:20:33,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2023-12-21 05:20:35,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1690. [2023-12-21 05:20:35,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1689 states have (on average 1.088809946714032) internal successors, (1839), 1689 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 1839 transitions. [2023-12-21 05:20:35,677 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 1839 transitions. Word has length 50 [2023-12-21 05:20:35,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:35,677 INFO L495 AbstractCegarLoop]: Abstraction has 1690 states and 1839 transitions. [2023-12-21 05:20:35,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:35,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 1839 transitions. [2023-12-21 05:20:35,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 05:20:35,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:35,678 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:35,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Ended with exit code 0 [2023-12-21 05:20:35,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2023-12-21 05:20:35,883 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:35,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:35,883 INFO L85 PathProgramCache]: Analyzing trace with hash -198135463, now seen corresponding path program 139 times [2023-12-21 05:20:35,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:35,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941858190] [2023-12-21 05:20:35,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:35,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:36,638 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 274 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:20:36,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:36,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941858190] [2023-12-21 05:20:36,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941858190] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:36,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447294361] [2023-12-21 05:20:36,639 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:20:36,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:36,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:36,640 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:20:36,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2023-12-21 05:20:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:36,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 90 conjunts are in the unsatisfiable core [2023-12-21 05:20:36,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:36,794 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 274 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:20:36,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:37,499 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 274 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:20:37,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447294361] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:37,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:37,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 64 [2023-12-21 05:20:37,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547750768] [2023-12-21 05:20:37,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:37,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-21 05:20:37,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:37,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-21 05:20:37,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=3882, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 05:20:37,501 INFO L87 Difference]: Start difference. First operand 1690 states and 1839 transitions. Second operand has 64 states, 64 states have (on average 1.25) internal successors, (80), 64 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:40,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:40,842 INFO L93 Difference]: Finished difference Result 1796 states and 1955 transitions. [2023-12-21 05:20:40,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-21 05:20:40,843 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.25) internal successors, (80), 64 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-21 05:20:40,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:40,845 INFO L225 Difference]: With dead ends: 1796 [2023-12-21 05:20:40,845 INFO L226 Difference]: Without dead ends: 1788 [2023-12-21 05:20:40,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=243, Invalid=6897, Unknown=0, NotChecked=0, Total=7140 [2023-12-21 05:20:40,846 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 152 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 3610 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 3611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:40,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 2974 Invalid, 3611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3610 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 05:20:40,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2023-12-21 05:20:42,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1698. [2023-12-21 05:20:42,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1697 states have (on average 1.08898055391868) internal successors, (1848), 1697 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:42,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 1848 transitions. [2023-12-21 05:20:42,788 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 1848 transitions. Word has length 51 [2023-12-21 05:20:42,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:42,788 INFO L495 AbstractCegarLoop]: Abstraction has 1698 states and 1848 transitions. [2023-12-21 05:20:42,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.25) internal successors, (80), 64 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:42,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 1848 transitions. [2023-12-21 05:20:42,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 05:20:42,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:42,790 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:42,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2023-12-21 05:20:42,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:42,994 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:42,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:42,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1121639257, now seen corresponding path program 140 times [2023-12-21 05:20:42,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:42,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183781047] [2023-12-21 05:20:42,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:42,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:43,592 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:20:43,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:43,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183781047] [2023-12-21 05:20:43,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183781047] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:43,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940227701] [2023-12-21 05:20:43,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:20:43,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:43,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:43,593 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:20:43,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2023-12-21 05:20:43,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:20:43,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:20:43,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 86 conjunts are in the unsatisfiable core [2023-12-21 05:20:43,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:44,313 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:20:44,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:44,465 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:20:44,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940227701] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:44,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:44,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 63 [2023-12-21 05:20:44,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956397336] [2023-12-21 05:20:44,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:44,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-21 05:20:44,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:44,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-21 05:20:44,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=3752, Unknown=0, NotChecked=0, Total=3906 [2023-12-21 05:20:44,467 INFO L87 Difference]: Start difference. First operand 1698 states and 1848 transitions. Second operand has 63 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 63 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:47,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:47,597 INFO L93 Difference]: Finished difference Result 1722 states and 1871 transitions. [2023-12-21 05:20:47,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 05:20:47,597 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 63 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-21 05:20:47,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:47,599 INFO L225 Difference]: With dead ends: 1722 [2023-12-21 05:20:47,599 INFO L226 Difference]: Without dead ends: 1690 [2023-12-21 05:20:47,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=246, Invalid=6560, Unknown=0, NotChecked=0, Total=6806 [2023-12-21 05:20:47,600 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 127 mSDsluCounter, 2503 mSDsCounter, 0 mSdLazyCounter, 3066 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 3067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:47,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 2561 Invalid, 3067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3066 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 05:20:47,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2023-12-21 05:20:49,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1690. [2023-12-21 05:20:49,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1689 states have (on average 1.088809946714032) internal successors, (1839), 1689 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:49,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 1839 transitions. [2023-12-21 05:20:49,376 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 1839 transitions. Word has length 51 [2023-12-21 05:20:49,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:49,376 INFO L495 AbstractCegarLoop]: Abstraction has 1690 states and 1839 transitions. [2023-12-21 05:20:49,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 63 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:49,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 1839 transitions. [2023-12-21 05:20:49,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 05:20:49,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:49,378 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:49,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Forceful destruction successful, exit code 0 [2023-12-21 05:20:49,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2023-12-21 05:20:49,582 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:49,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:49,582 INFO L85 PathProgramCache]: Analyzing trace with hash 533637465, now seen corresponding path program 141 times [2023-12-21 05:20:49,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:49,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127830625] [2023-12-21 05:20:49,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:49,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:20:50,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:50,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127830625] [2023-12-21 05:20:50,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127830625] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:50,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404465541] [2023-12-21 05:20:50,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:20:50,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:50,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:50,157 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:20:50,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2023-12-21 05:20:50,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-21 05:20:50,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:20:50,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-21 05:20:50,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:50,721 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:20:50,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:20:50,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404465541] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:50,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:50,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 61 [2023-12-21 05:20:50,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263140103] [2023-12-21 05:20:50,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:50,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-21 05:20:50,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:50,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-21 05:20:50,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=3507, Unknown=0, NotChecked=0, Total=3660 [2023-12-21 05:20:50,825 INFO L87 Difference]: Start difference. First operand 1690 states and 1839 transitions. Second operand has 61 states, 61 states have (on average 1.2950819672131149) internal successors, (79), 61 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:53,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:53,640 INFO L93 Difference]: Finished difference Result 1713 states and 1861 transitions. [2023-12-21 05:20:53,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 05:20:53,641 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.2950819672131149) internal successors, (79), 61 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-21 05:20:53,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:53,642 INFO L225 Difference]: With dead ends: 1713 [2023-12-21 05:20:53,642 INFO L226 Difference]: Without dead ends: 1680 [2023-12-21 05:20:53,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=244, Invalid=6076, Unknown=0, NotChecked=0, Total=6320 [2023-12-21 05:20:53,643 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 112 mSDsluCounter, 2498 mSDsCounter, 0 mSdLazyCounter, 3180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 3181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:53,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 2550 Invalid, 3181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3180 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 05:20:53,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2023-12-21 05:20:55,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1680. [2023-12-21 05:20:55,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1679 states have (on average 1.0887432995830852) internal successors, (1828), 1679 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:55,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 1828 transitions. [2023-12-21 05:20:55,408 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 1828 transitions. Word has length 51 [2023-12-21 05:20:55,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:55,408 INFO L495 AbstractCegarLoop]: Abstraction has 1680 states and 1828 transitions. [2023-12-21 05:20:55,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.2950819672131149) internal successors, (79), 61 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:55,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 1828 transitions. [2023-12-21 05:20:55,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 05:20:55,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:55,410 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:55,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Forceful destruction successful, exit code 0 [2023-12-21 05:20:55,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:55,614 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:55,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:55,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2130386087, now seen corresponding path program 142 times [2023-12-21 05:20:55,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:55,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858702903] [2023-12-21 05:20:55,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:55,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:56,123 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:20:56,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:56,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858702903] [2023-12-21 05:20:56,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858702903] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:56,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554009087] [2023-12-21 05:20:56,124 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:20:56,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:56,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:56,125 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:20:56,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2023-12-21 05:20:56,177 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:20:56,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:20:56,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-21 05:20:56,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:20:56,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:56,954 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:20:56,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554009087] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:56,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:56,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 59 [2023-12-21 05:20:56,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651852662] [2023-12-21 05:20:56,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:56,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-21 05:20:56,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:56,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-21 05:20:56,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=3270, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 05:20:56,956 INFO L87 Difference]: Start difference. First operand 1680 states and 1828 transitions. Second operand has 59 states, 59 states have (on average 1.305084745762712) internal successors, (77), 59 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:59,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:59,633 INFO L93 Difference]: Finished difference Result 1702 states and 1849 transitions. [2023-12-21 05:20:59,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 05:20:59,633 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.305084745762712) internal successors, (77), 59 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-21 05:20:59,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:59,635 INFO L225 Difference]: With dead ends: 1702 [2023-12-21 05:20:59,635 INFO L226 Difference]: Without dead ends: 1668 [2023-12-21 05:20:59,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=242, Invalid=5610, Unknown=0, NotChecked=0, Total=5852 [2023-12-21 05:20:59,635 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 96 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:59,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 1982 Invalid, 2537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 05:20:59,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2023-12-21 05:21:01,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1668. [2023-12-21 05:21:01,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1667 states have (on average 1.0887822435512897) internal successors, (1815), 1667 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:01,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 1815 transitions. [2023-12-21 05:21:01,473 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 1815 transitions. Word has length 51 [2023-12-21 05:21:01,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:21:01,473 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 1815 transitions. [2023-12-21 05:21:01,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.305084745762712) internal successors, (77), 59 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:01,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 1815 transitions. [2023-12-21 05:21:01,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 05:21:01,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:21:01,475 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:21:01,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2023-12-21 05:21:01,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:01,680 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:21:01,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:21:01,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1270653273, now seen corresponding path program 143 times [2023-12-21 05:21:01,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:21:01,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200703912] [2023-12-21 05:21:01,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:21:01,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:21:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:02,147 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:21:02,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:21:02,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200703912] [2023-12-21 05:21:02,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200703912] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:21:02,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170975934] [2023-12-21 05:21:02,148 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:21:02,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:02,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:21:02,149 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:21:02,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2023-12-21 05:21:02,209 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-21 05:21:02,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:21:02,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-21 05:21:02,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:21:02,740 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:21:02,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:21:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:21:02,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170975934] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:21:02,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:21:02,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 57 [2023-12-21 05:21:02,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482902177] [2023-12-21 05:21:02,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:21:02,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-21 05:21:02,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:21:02,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-21 05:21:02,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=3041, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 05:21:02,857 INFO L87 Difference]: Start difference. First operand 1668 states and 1815 transitions. Second operand has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:05,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:21:05,410 INFO L93 Difference]: Finished difference Result 1689 states and 1835 transitions. [2023-12-21 05:21:05,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 05:21:05,410 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-21 05:21:05,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:21:05,412 INFO L225 Difference]: With dead ends: 1689 [2023-12-21 05:21:05,412 INFO L226 Difference]: Without dead ends: 1654 [2023-12-21 05:21:05,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=240, Invalid=5162, Unknown=0, NotChecked=0, Total=5402 [2023-12-21 05:21:05,412 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 80 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 05:21:05,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1444 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 05:21:05,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2023-12-21 05:21:07,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1654. [2023-12-21 05:21:07,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1653 states have (on average 1.0889292196007259) internal successors, (1800), 1653 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:07,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 1800 transitions. [2023-12-21 05:21:07,149 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 1800 transitions. Word has length 51 [2023-12-21 05:21:07,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:21:07,149 INFO L495 AbstractCegarLoop]: Abstraction has 1654 states and 1800 transitions. [2023-12-21 05:21:07,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:07,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 1800 transitions. [2023-12-21 05:21:07,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 05:21:07,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:21:07,150 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:21:07,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2023-12-21 05:21:07,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:07,355 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:21:07,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:21:07,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1222710439, now seen corresponding path program 144 times [2023-12-21 05:21:07,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:21:07,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739600242] [2023-12-21 05:21:07,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:21:07,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:21:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:21:07,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:21:07,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739600242] [2023-12-21 05:21:07,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739600242] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:21:07,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686500333] [2023-12-21 05:21:07,828 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:21:07,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:07,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:21:07,829 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:21:07,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2023-12-21 05:21:07,879 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-21 05:21:07,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:21:07,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-21 05:21:07,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:21:08,475 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:21:08,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:21:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:21:08,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686500333] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:21:08,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:21:08,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 55 [2023-12-21 05:21:08,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573591076] [2023-12-21 05:21:08,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:21:08,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-21 05:21:08,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:21:08,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-21 05:21:08,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2820, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 05:21:08,609 INFO L87 Difference]: Start difference. First operand 1654 states and 1800 transitions. Second operand has 55 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 55 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:11,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:21:11,128 INFO L93 Difference]: Finished difference Result 1674 states and 1819 transitions. [2023-12-21 05:21:11,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 05:21:11,128 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 55 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-21 05:21:11,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:21:11,130 INFO L225 Difference]: With dead ends: 1674 [2023-12-21 05:21:11,130 INFO L226 Difference]: Without dead ends: 1638 [2023-12-21 05:21:11,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=238, Invalid=4732, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 05:21:11,131 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 65 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:21:11,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1171 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:21:11,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2023-12-21 05:21:12,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1638. [2023-12-21 05:21:12,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1637 states have (on average 1.0891875381795968) internal successors, (1783), 1637 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:12,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 1783 transitions. [2023-12-21 05:21:12,857 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 1783 transitions. Word has length 51 [2023-12-21 05:21:12,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:21:12,857 INFO L495 AbstractCegarLoop]: Abstraction has 1638 states and 1783 transitions. [2023-12-21 05:21:12,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 55 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:12,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 1783 transitions. [2023-12-21 05:21:12,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 05:21:12,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:21:12,858 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:21:12,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2023-12-21 05:21:13,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:13,063 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:21:13,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:21:13,063 INFO L85 PathProgramCache]: Analyzing trace with hash -948266663, now seen corresponding path program 145 times [2023-12-21 05:21:13,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:21:13,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168144543] [2023-12-21 05:21:13,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:21:13,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:21:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:13,483 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:21:13,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:21:13,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168144543] [2023-12-21 05:21:13,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168144543] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:21:13,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881960856] [2023-12-21 05:21:13,484 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:21:13,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:13,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:21:13,485 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:21:13,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2023-12-21 05:21:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:13,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 05:21:13,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:21:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:21:14,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:21:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:21:14,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881960856] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:21:14,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:21:14,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 53 [2023-12-21 05:21:14,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100360865] [2023-12-21 05:21:14,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:21:14,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-21 05:21:14,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:21:14,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-21 05:21:14,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2607, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 05:21:14,179 INFO L87 Difference]: Start difference. First operand 1638 states and 1783 transitions. Second operand has 53 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:16,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:21:16,476 INFO L93 Difference]: Finished difference Result 1657 states and 1801 transitions. [2023-12-21 05:21:16,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 05:21:16,476 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-21 05:21:16,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:21:16,478 INFO L225 Difference]: With dead ends: 1657 [2023-12-21 05:21:16,478 INFO L226 Difference]: Without dead ends: 1620 [2023-12-21 05:21:16,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=236, Invalid=4320, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 05:21:16,478 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 49 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:21:16,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 900 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:21:16,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2023-12-21 05:21:18,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1620. [2023-12-21 05:21:18,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1619 states have (on average 1.089561457689932) internal successors, (1764), 1619 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:18,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 1764 transitions. [2023-12-21 05:21:18,206 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 1764 transitions. Word has length 51 [2023-12-21 05:21:18,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:21:18,207 INFO L495 AbstractCegarLoop]: Abstraction has 1620 states and 1764 transitions. [2023-12-21 05:21:18,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:18,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 1764 transitions. [2023-12-21 05:21:18,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 05:21:18,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:21:18,208 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:21:18,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Ended with exit code 0 [2023-12-21 05:21:18,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:18,412 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:21:18,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:21:18,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1232485154, now seen corresponding path program 146 times [2023-12-21 05:21:18,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:21:18,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760984014] [2023-12-21 05:21:18,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:21:18,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:21:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 9 proven. 73 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-21 05:21:18,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:21:18,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760984014] [2023-12-21 05:21:18,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760984014] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:21:18,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144906123] [2023-12-21 05:21:18,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:21:18,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:18,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:21:18,708 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:21:18,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2023-12-21 05:21:18,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:21:18,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:21:18,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 05:21:18,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:21:19,240 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-21 05:21:19,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:21:19,647 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-21 05:21:19,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144906123] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:21:19,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:21:19,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 50 [2023-12-21 05:21:19,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733764678] [2023-12-21 05:21:19,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:21:19,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-21 05:21:19,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:21:19,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-21 05:21:19,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2304, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 05:21:19,648 INFO L87 Difference]: Start difference. First operand 1620 states and 1764 transitions. Second operand has 50 states, 50 states have (on average 1.38) internal successors, (69), 50 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:22,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:21:22,987 INFO L93 Difference]: Finished difference Result 1938 states and 2114 transitions. [2023-12-21 05:21:22,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 05:21:22,987 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.38) internal successors, (69), 50 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-21 05:21:22,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:21:22,989 INFO L225 Difference]: With dead ends: 1938 [2023-12-21 05:21:22,989 INFO L226 Difference]: Without dead ends: 1850 [2023-12-21 05:21:22,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 66 SyntacticMatches, 8 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1040, Invalid=5766, Unknown=0, NotChecked=0, Total=6806 [2023-12-21 05:21:22,990 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 691 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:21:22,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 991 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:21:22,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2023-12-21 05:21:24,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1760. [2023-12-21 05:21:24,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1759 states have (on average 1.0818646958499147) internal successors, (1903), 1759 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:24,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 1903 transitions. [2023-12-21 05:21:24,826 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 1903 transitions. Word has length 51 [2023-12-21 05:21:24,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:21:24,826 INFO L495 AbstractCegarLoop]: Abstraction has 1760 states and 1903 transitions. [2023-12-21 05:21:24,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.38) internal successors, (69), 50 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:24,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 1903 transitions. [2023-12-21 05:21:24,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 05:21:24,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:21:24,828 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:21:24,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Ended with exit code 0 [2023-12-21 05:21:25,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2023-12-21 05:21:25,032 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:21:25,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:21:25,032 INFO L85 PathProgramCache]: Analyzing trace with hash 363393881, now seen corresponding path program 147 times [2023-12-21 05:21:25,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:21:25,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770931756] [2023-12-21 05:21:25,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:21:25,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:21:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:25,447 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 05:21:25,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:21:25,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770931756] [2023-12-21 05:21:25,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770931756] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:21:25,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535551244] [2023-12-21 05:21:25,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:21:25,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:25,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:21:25,449 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:21:25,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2023-12-21 05:21:25,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-21 05:21:25,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:21:25,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-21 05:21:25,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:21:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 05:21:25,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:21:26,257 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 05:21:26,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535551244] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:21:26,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:21:26,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 57 [2023-12-21 05:21:26,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606081296] [2023-12-21 05:21:26,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:21:26,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-21 05:21:26,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:21:26,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-21 05:21:26,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=3021, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 05:21:26,259 INFO L87 Difference]: Start difference. First operand 1760 states and 1903 transitions. Second operand has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:28,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:21:28,716 INFO L93 Difference]: Finished difference Result 1805 states and 1952 transitions. [2023-12-21 05:21:28,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 05:21:28,716 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-21 05:21:28,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:21:28,718 INFO L225 Difference]: With dead ends: 1805 [2023-12-21 05:21:28,718 INFO L226 Difference]: Without dead ends: 1767 [2023-12-21 05:21:28,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=257, Invalid=4713, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 05:21:28,718 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 34 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:21:28,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 698 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:21:28,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2023-12-21 05:21:30,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1753. [2023-12-21 05:21:30,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1752 states have (on average 1.0827625570776256) internal successors, (1897), 1752 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:30,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 1897 transitions. [2023-12-21 05:21:30,553 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 1897 transitions. Word has length 51 [2023-12-21 05:21:30,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:21:30,553 INFO L495 AbstractCegarLoop]: Abstraction has 1753 states and 1897 transitions. [2023-12-21 05:21:30,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:30,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 1897 transitions. [2023-12-21 05:21:30,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 05:21:30,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:21:30,555 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:21:30,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2023-12-21 05:21:30,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2023-12-21 05:21:30,759 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:21:30,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:21:30,759 INFO L85 PathProgramCache]: Analyzing trace with hash 30734654, now seen corresponding path program 148 times [2023-12-21 05:21:30,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:21:30,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655952808] [2023-12-21 05:21:30,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:21:30,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:21:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:31,048 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-21 05:21:31,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:21:31,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655952808] [2023-12-21 05:21:31,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655952808] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:21:31,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682920670] [2023-12-21 05:21:31,049 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:21:31,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:31,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:21:31,050 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:21:31,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2023-12-21 05:21:31,102 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:21:31,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:21:31,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 05:21:31,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:21:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-21 05:21:31,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:21:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-21 05:21:32,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682920670] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:21:32,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:21:32,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 50 [2023-12-21 05:21:32,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460844201] [2023-12-21 05:21:32,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:21:32,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-21 05:21:32,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:21:32,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-21 05:21:32,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2304, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 05:21:32,080 INFO L87 Difference]: Start difference. First operand 1753 states and 1897 transitions. Second operand has 50 states, 50 states have (on average 1.4) internal successors, (70), 50 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:35,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:21:35,331 INFO L93 Difference]: Finished difference Result 1806 states and 1949 transitions. [2023-12-21 05:21:35,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-21 05:21:35,331 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.4) internal successors, (70), 50 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-21 05:21:35,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:21:35,333 INFO L225 Difference]: With dead ends: 1806 [2023-12-21 05:21:35,333 INFO L226 Difference]: Without dead ends: 1758 [2023-12-21 05:21:35,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 65 SyntacticMatches, 9 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=503, Invalid=5047, Unknown=0, NotChecked=0, Total=5550 [2023-12-21 05:21:35,333 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 602 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 1423 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 05:21:35,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 1489 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1423 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 05:21:35,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2023-12-21 05:21:37,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1753. [2023-12-21 05:21:37,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1752 states have (on average 1.0736301369863013) internal successors, (1881), 1752 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:37,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 1881 transitions. [2023-12-21 05:21:37,210 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 1881 transitions. Word has length 51 [2023-12-21 05:21:37,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:21:37,211 INFO L495 AbstractCegarLoop]: Abstraction has 1753 states and 1881 transitions. [2023-12-21 05:21:37,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.4) internal successors, (70), 50 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:37,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 1881 transitions. [2023-12-21 05:21:37,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 05:21:37,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:21:37,212 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:21:37,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Ended with exit code 0 [2023-12-21 05:21:37,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2023-12-21 05:21:37,416 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:21:37,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:21:37,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1892459981, now seen corresponding path program 149 times [2023-12-21 05:21:37,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:21:37,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190894908] [2023-12-21 05:21:37,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:21:37,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:21:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 17 proven. 272 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:21:38,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:21:38,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190894908] [2023-12-21 05:21:38,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190894908] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:21:38,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941463985] [2023-12-21 05:21:38,074 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:21:38,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:38,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:21:38,075 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:21:38,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2023-12-21 05:21:38,131 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-12-21 05:21:38,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:21:38,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 05:21:38,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:21:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 17 proven. 272 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:21:39,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:21:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 17 proven. 272 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:21:41,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941463985] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:21:41,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:21:41,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 89 [2023-12-21 05:21:41,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211060274] [2023-12-21 05:21:41,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:21:41,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2023-12-21 05:21:41,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:21:41,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2023-12-21 05:21:41,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=7585, Unknown=0, NotChecked=0, Total=7832 [2023-12-21 05:21:41,110 INFO L87 Difference]: Start difference. First operand 1753 states and 1881 transitions. Second operand has 89 states, 89 states have (on average 1.303370786516854) internal successors, (116), 89 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:50,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:21:50,758 INFO L93 Difference]: Finished difference Result 3027 states and 3197 transitions. [2023-12-21 05:21:50,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-21 05:21:50,758 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.303370786516854) internal successors, (116), 89 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-21 05:21:50,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:21:50,761 INFO L225 Difference]: With dead ends: 3027 [2023-12-21 05:21:50,761 INFO L226 Difference]: Without dead ends: 2963 [2023-12-21 05:21:50,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 36 SyntacticMatches, 16 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3297 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=3384, Invalid=19872, Unknown=0, NotChecked=0, Total=23256 [2023-12-21 05:21:50,762 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 983 mSDsluCounter, 2017 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 05:21:50,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 2052 Invalid, 1930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 05:21:50,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2023-12-21 05:21:52,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1881. [2023-12-21 05:21:52,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 1.073404255319149) internal successors, (2018), 1880 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2018 transitions. [2023-12-21 05:21:52,836 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2018 transitions. Word has length 52 [2023-12-21 05:21:52,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:21:52,837 INFO L495 AbstractCegarLoop]: Abstraction has 1881 states and 2018 transitions. [2023-12-21 05:21:52,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.303370786516854) internal successors, (116), 89 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:52,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2018 transitions. [2023-12-21 05:21:52,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 05:21:52,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:21:52,838 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:21:52,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Ended with exit code 0 [2023-12-21 05:21:53,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2023-12-21 05:21:53,042 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:21:53,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:21:53,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1504009274, now seen corresponding path program 150 times [2023-12-21 05:21:53,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:21:53,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867557856] [2023-12-21 05:21:53,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:21:53,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:21:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:21:53,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:21:53,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867557856] [2023-12-21 05:21:53,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867557856] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:21:53,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597502191] [2023-12-21 05:21:53,690 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:21:53,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:53,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:21:53,691 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:21:53,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2023-12-21 05:21:53,745 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-12-21 05:21:53,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:21:53,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 05:21:53,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:21:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:21:55,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:21:56,857 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 17 proven. 272 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:21:56,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597502191] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:21:56,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:21:56,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 89 [2023-12-21 05:21:56,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241302961] [2023-12-21 05:21:56,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:21:56,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2023-12-21 05:21:56,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:21:56,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2023-12-21 05:21:56,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=7586, Unknown=0, NotChecked=0, Total=7832 [2023-12-21 05:21:56,858 INFO L87 Difference]: Start difference. First operand 1881 states and 2018 transitions. Second operand has 89 states, 89 states have (on average 1.303370786516854) internal successors, (116), 89 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:04,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:22:04,176 INFO L93 Difference]: Finished difference Result 1953 states and 2099 transitions. [2023-12-21 05:22:04,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-21 05:22:04,177 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.303370786516854) internal successors, (116), 89 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-21 05:22:04,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:22:04,179 INFO L225 Difference]: With dead ends: 1953 [2023-12-21 05:22:04,179 INFO L226 Difference]: Without dead ends: 1921 [2023-12-21 05:22:04,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 35 SyntacticMatches, 17 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2558 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1317, Invalid=17315, Unknown=0, NotChecked=0, Total=18632 [2023-12-21 05:22:04,180 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 1197 mSDsluCounter, 3912 mSDsCounter, 0 mSdLazyCounter, 4201 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 3983 SdHoareTripleChecker+Invalid, 4367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 4201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:22:04,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 3983 Invalid, 4367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 4201 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 05:22:04,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2023-12-21 05:22:06,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1890. [2023-12-21 05:22:06,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1889 states have (on average 1.073054526204341) internal successors, (2027), 1889 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:06,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 2027 transitions. [2023-12-21 05:22:06,370 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 2027 transitions. Word has length 52 [2023-12-21 05:22:06,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:22:06,370 INFO L495 AbstractCegarLoop]: Abstraction has 1890 states and 2027 transitions. [2023-12-21 05:22:06,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.303370786516854) internal successors, (116), 89 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:06,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 2027 transitions. [2023-12-21 05:22:06,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 05:22:06,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:22:06,372 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:22:06,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Forceful destruction successful, exit code 0 [2023-12-21 05:22:06,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2023-12-21 05:22:06,576 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:22:06,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:22:06,577 INFO L85 PathProgramCache]: Analyzing trace with hash 734489454, now seen corresponding path program 151 times [2023-12-21 05:22:06,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:22:06,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684376735] [2023-12-21 05:22:06,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:22:06,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:22:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:22:06,804 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 36 proven. 45 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-21 05:22:06,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:22:06,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684376735] [2023-12-21 05:22:06,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684376735] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:22:06,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598291100] [2023-12-21 05:22:06,804 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:22:06,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:06,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:22:06,805 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:22:06,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2023-12-21 05:22:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:22:06,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 05:22:06,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:22:07,025 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-21 05:22:07,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:22:07,163 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-21 05:22:07,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598291100] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:22:07,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:22:07,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2023-12-21 05:22:07,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290096063] [2023-12-21 05:22:07,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:22:07,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 05:22:07,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:22:07,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 05:22:07,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=650, Unknown=0, NotChecked=0, Total=992 [2023-12-21 05:22:07,165 INFO L87 Difference]: Start difference. First operand 1890 states and 2027 transitions. Second operand has 32 states, 32 states have (on average 1.5625) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:09,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:22:09,738 INFO L93 Difference]: Finished difference Result 2120 states and 2288 transitions. [2023-12-21 05:22:09,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 05:22:09,739 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-21 05:22:09,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:22:09,741 INFO L225 Difference]: With dead ends: 2120 [2023-12-21 05:22:09,741 INFO L226 Difference]: Without dead ends: 1878 [2023-12-21 05:22:09,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 75 SyntacticMatches, 18 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1977 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1554, Invalid=3002, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 05:22:09,742 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 119 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:22:09,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 307 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:22:09,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2023-12-21 05:22:11,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1878. [2023-12-21 05:22:11,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1877 states have (on average 1.0713905167820992) internal successors, (2011), 1877 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:11,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2011 transitions. [2023-12-21 05:22:11,914 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2011 transitions. Word has length 52 [2023-12-21 05:22:11,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:22:11,914 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 2011 transitions. [2023-12-21 05:22:11,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:11,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2011 transitions. [2023-12-21 05:22:11,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 05:22:11,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:22:11,916 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:22:11,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Ended with exit code 0 [2023-12-21 05:22:12,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:12,121 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:22:12,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:22:12,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1648248027, now seen corresponding path program 152 times [2023-12-21 05:22:12,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:22:12,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915024528] [2023-12-21 05:22:12,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:22:12,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:22:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:22:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 36 proven. 45 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-21 05:22:12,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:22:12,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915024528] [2023-12-21 05:22:12,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915024528] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:22:12,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955535424] [2023-12-21 05:22:12,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:22:12,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:12,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:22:12,306 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:22:12,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2023-12-21 05:22:12,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:22:12,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:22:12,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 05:22:12,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:22:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-21 05:22:12,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:22:12,641 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-21 05:22:12,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955535424] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:22:12,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:22:12,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2023-12-21 05:22:12,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328386781] [2023-12-21 05:22:12,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:22:12,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 05:22:12,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:22:12,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 05:22:12,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=650, Unknown=0, NotChecked=0, Total=992 [2023-12-21 05:22:12,643 INFO L87 Difference]: Start difference. First operand 1878 states and 2011 transitions. Second operand has 32 states, 32 states have (on average 1.5625) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:15,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:22:15,548 INFO L93 Difference]: Finished difference Result 1927 states and 2060 transitions. [2023-12-21 05:22:15,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 05:22:15,548 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-21 05:22:15,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:22:15,557 INFO L225 Difference]: With dead ends: 1927 [2023-12-21 05:22:15,557 INFO L226 Difference]: Without dead ends: 1922 [2023-12-21 05:22:15,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 75 SyntacticMatches, 18 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1977 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1554, Invalid=3002, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 05:22:15,558 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 99 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:22:15,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 281 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:22:15,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2023-12-21 05:22:17,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1879. [2023-12-21 05:22:17,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1879 states, 1878 states have (on average 1.071352502662407) internal successors, (2012), 1878 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:17,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 2012 transitions. [2023-12-21 05:22:17,809 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 2012 transitions. Word has length 52 [2023-12-21 05:22:17,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:22:17,809 INFO L495 AbstractCegarLoop]: Abstraction has 1879 states and 2012 transitions. [2023-12-21 05:22:17,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:17,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 2012 transitions. [2023-12-21 05:22:17,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 05:22:17,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:22:17,811 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:22:17,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Ended with exit code 0 [2023-12-21 05:22:18,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:18,016 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:22:18,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:22:18,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1175628020, now seen corresponding path program 153 times [2023-12-21 05:22:18,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:22:18,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354028092] [2023-12-21 05:22:18,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:22:18,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:22:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:22:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:22:18,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:22:18,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354028092] [2023-12-21 05:22:18,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354028092] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:22:18,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809514778] [2023-12-21 05:22:18,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:22:18,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:18,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:22:18,821 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:22:18,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2023-12-21 05:22:18,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-21 05:22:18,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:22:18,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 94 conjunts are in the unsatisfiable core [2023-12-21 05:22:18,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:22:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:22:19,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:22:19,765 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:22:19,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809514778] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:22:19,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:22:19,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 68 [2023-12-21 05:22:19,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60853240] [2023-12-21 05:22:19,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:22:19,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-21 05:22:19,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:22:19,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-21 05:22:19,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=4394, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 05:22:19,766 INFO L87 Difference]: Start difference. First operand 1879 states and 2012 transitions. Second operand has 68 states, 68 states have (on average 1.25) internal successors, (85), 68 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:23,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:22:23,502 INFO L93 Difference]: Finished difference Result 1988 states and 2131 transitions. [2023-12-21 05:22:23,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-21 05:22:23,503 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.25) internal successors, (85), 68 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-21 05:22:23,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:22:23,505 INFO L225 Difference]: With dead ends: 1988 [2023-12-21 05:22:23,505 INFO L226 Difference]: Without dead ends: 1980 [2023-12-21 05:22:23,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=259, Invalid=7751, Unknown=0, NotChecked=0, Total=8010 [2023-12-21 05:22:23,505 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 159 mSDsluCounter, 3180 mSDsCounter, 0 mSdLazyCounter, 4001 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 3244 SdHoareTripleChecker+Invalid, 4002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:22:23,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 3244 Invalid, 4002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4001 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 05:22:23,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2023-12-21 05:22:25,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1887. [2023-12-21 05:22:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1886 states have (on average 1.0715800636267232) internal successors, (2021), 1886 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:25,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2021 transitions. [2023-12-21 05:22:25,646 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2021 transitions. Word has length 53 [2023-12-21 05:22:25,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:22:25,646 INFO L495 AbstractCegarLoop]: Abstraction has 1887 states and 2021 transitions. [2023-12-21 05:22:25,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.25) internal successors, (85), 68 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:25,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2021 transitions. [2023-12-21 05:22:25,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 05:22:25,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:22:25,648 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:22:25,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Forceful destruction successful, exit code 0 [2023-12-21 05:22:25,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:25,852 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:22:25,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:22:25,853 INFO L85 PathProgramCache]: Analyzing trace with hash 83485808, now seen corresponding path program 154 times [2023-12-21 05:22:25,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:22:25,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508313993] [2023-12-21 05:22:25,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:22:25,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:22:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:22:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 246 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:22:26,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:22:26,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508313993] [2023-12-21 05:22:26,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508313993] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:22:26,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449753545] [2023-12-21 05:22:26,622 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:22:26,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:26,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:22:26,628 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:22:26,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2023-12-21 05:22:26,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:22:26,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:22:26,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 90 conjunts are in the unsatisfiable core [2023-12-21 05:22:26,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:22:27,449 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 246 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:22:27,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:22:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 246 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:22:27,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449753545] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:22:27,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:22:27,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 66 [2023-12-21 05:22:27,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558659681] [2023-12-21 05:22:27,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:22:27,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-21 05:22:27,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:22:27,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-21 05:22:27,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=4129, Unknown=0, NotChecked=0, Total=4290 [2023-12-21 05:22:27,609 INFO L87 Difference]: Start difference. First operand 1887 states and 2021 transitions. Second operand has 66 states, 66 states have (on average 1.2727272727272727) internal successors, (84), 66 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:30,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:22:30,966 INFO L93 Difference]: Finished difference Result 1912 states and 2045 transitions. [2023-12-21 05:22:30,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-21 05:22:30,967 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.2727272727272727) internal successors, (84), 66 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-21 05:22:30,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:22:30,969 INFO L225 Difference]: With dead ends: 1912 [2023-12-21 05:22:30,969 INFO L226 Difference]: Without dead ends: 1879 [2023-12-21 05:22:30,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=257, Invalid=7225, Unknown=0, NotChecked=0, Total=7482 [2023-12-21 05:22:30,969 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 133 mSDsluCounter, 2976 mSDsCounter, 0 mSdLazyCounter, 3700 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 3701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 05:22:30,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 3038 Invalid, 3701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3700 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 05:22:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2023-12-21 05:22:33,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1879. [2023-12-21 05:22:33,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1879 states, 1878 states have (on average 1.071352502662407) internal successors, (2012), 1878 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:33,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 2012 transitions. [2023-12-21 05:22:33,100 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 2012 transitions. Word has length 53 [2023-12-21 05:22:33,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:22:33,101 INFO L495 AbstractCegarLoop]: Abstraction has 1879 states and 2012 transitions. [2023-12-21 05:22:33,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.2727272727272727) internal successors, (84), 66 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:33,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 2012 transitions. [2023-12-21 05:22:33,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 05:22:33,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:22:33,102 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:22:33,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Ended with exit code 0 [2023-12-21 05:22:33,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:33,307 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:22:33,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:22:33,307 INFO L85 PathProgramCache]: Analyzing trace with hash -880631028, now seen corresponding path program 155 times [2023-12-21 05:22:33,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:22:33,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908013153] [2023-12-21 05:22:33,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:22:33,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:22:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:22:33,930 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:22:33,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:22:33,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908013153] [2023-12-21 05:22:33,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908013153] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:22:33,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242385664] [2023-12-21 05:22:33,930 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:22:33,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:33,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:22:33,931 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:22:33,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2023-12-21 05:22:33,989 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-12-21 05:22:33,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:22:33,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 86 conjunts are in the unsatisfiable core [2023-12-21 05:22:33,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:22:34,610 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:22:34,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:22:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:22:34,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242385664] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:22:34,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:22:34,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 64 [2023-12-21 05:22:34,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020593616] [2023-12-21 05:22:34,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:22:34,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-21 05:22:34,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:22:34,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-21 05:22:34,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=3872, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 05:22:34,767 INFO L87 Difference]: Start difference. First operand 1879 states and 2012 transitions. Second operand has 64 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:38,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:22:38,232 INFO L93 Difference]: Finished difference Result 1903 states and 2035 transitions. [2023-12-21 05:22:38,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 05:22:38,233 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-21 05:22:38,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:22:38,234 INFO L225 Difference]: With dead ends: 1903 [2023-12-21 05:22:38,234 INFO L226 Difference]: Without dead ends: 1869 [2023-12-21 05:22:38,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=255, Invalid=6717, Unknown=0, NotChecked=0, Total=6972 [2023-12-21 05:22:38,235 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 118 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 3201 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 3202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 05:22:38,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 2560 Invalid, 3202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3201 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 05:22:38,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2023-12-21 05:22:40,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1869. [2023-12-21 05:22:40,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1868 states have (on average 1.0711991434689507) internal successors, (2001), 1868 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:40,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2001 transitions. [2023-12-21 05:22:40,368 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2001 transitions. Word has length 53 [2023-12-21 05:22:40,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:22:40,368 INFO L495 AbstractCegarLoop]: Abstraction has 1869 states and 2001 transitions. [2023-12-21 05:22:40,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2001 transitions. [2023-12-21 05:22:40,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 05:22:40,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:22:40,370 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:22:40,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Forceful destruction successful, exit code 0 [2023-12-21 05:22:40,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable164 [2023-12-21 05:22:40,575 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:22:40,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:22:40,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1331439728, now seen corresponding path program 156 times [2023-12-21 05:22:40,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:22:40,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567999435] [2023-12-21 05:22:40,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:22:40,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:22:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:22:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:22:41,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:22:41,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567999435] [2023-12-21 05:22:41,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567999435] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:22:41,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039044128] [2023-12-21 05:22:41,239 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:22:41,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:41,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:22:41,240 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:22:41,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2023-12-21 05:22:41,302 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-21 05:22:41,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:22:41,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-21 05:22:41,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:22:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:22:41,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:22:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:22:42,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039044128] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:22:42,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:22:42,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 62 [2023-12-21 05:22:42,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239105518] [2023-12-21 05:22:42,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:22:42,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-21 05:22:42,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:22:42,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-21 05:22:42,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=3623, Unknown=0, NotChecked=0, Total=3782 [2023-12-21 05:22:42,067 INFO L87 Difference]: Start difference. First operand 1869 states and 2001 transitions. Second operand has 62 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 62 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:45,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:22:45,221 INFO L93 Difference]: Finished difference Result 1892 states and 2023 transitions. [2023-12-21 05:22:45,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 05:22:45,221 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 62 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-21 05:22:45,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:22:45,242 INFO L225 Difference]: With dead ends: 1892 [2023-12-21 05:22:45,242 INFO L226 Difference]: Without dead ends: 1857 [2023-12-21 05:22:45,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=253, Invalid=6227, Unknown=0, NotChecked=0, Total=6480 [2023-12-21 05:22:45,242 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 102 mSDsluCounter, 2214 mSDsCounter, 0 mSdLazyCounter, 2926 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 05:22:45,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 2264 Invalid, 2927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2926 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 05:22:45,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2023-12-21 05:22:47,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1857. [2023-12-21 05:22:47,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 1.0711206896551724) internal successors, (1988), 1856 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:47,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 1988 transitions. [2023-12-21 05:22:47,333 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 1988 transitions. Word has length 53 [2023-12-21 05:22:47,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:22:47,333 INFO L495 AbstractCegarLoop]: Abstraction has 1857 states and 1988 transitions. [2023-12-21 05:22:47,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 62 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:47,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 1988 transitions. [2023-12-21 05:22:47,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 05:22:47,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:22:47,335 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:22:47,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Forceful destruction successful, exit code 0 [2023-12-21 05:22:47,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:47,540 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:22:47,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:22:47,540 INFO L85 PathProgramCache]: Analyzing trace with hash 974704396, now seen corresponding path program 157 times [2023-12-21 05:22:47,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:22:47,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070534081] [2023-12-21 05:22:47,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:22:47,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:22:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:22:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:22:48,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:22:48,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070534081] [2023-12-21 05:22:48,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070534081] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:22:48,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696720450] [2023-12-21 05:22:48,098 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:22:48,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:48,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:22:48,099 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:22:48,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2023-12-21 05:22:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:22:48,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-21 05:22:48,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:22:48,769 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:22:48,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:22:48,896 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:22:48,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696720450] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:22:48,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:22:48,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 60 [2023-12-21 05:22:48,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602980558] [2023-12-21 05:22:48,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:22:48,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-21 05:22:48,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:22:48,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-21 05:22:48,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=3382, Unknown=0, NotChecked=0, Total=3540 [2023-12-21 05:22:48,897 INFO L87 Difference]: Start difference. First operand 1857 states and 1988 transitions. Second operand has 60 states, 60 states have (on average 1.3) internal successors, (78), 60 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:51,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:22:51,983 INFO L93 Difference]: Finished difference Result 1879 states and 2009 transitions. [2023-12-21 05:22:51,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 05:22:51,983 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.3) internal successors, (78), 60 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-21 05:22:51,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:22:51,985 INFO L225 Difference]: With dead ends: 1879 [2023-12-21 05:22:51,985 INFO L226 Difference]: Without dead ends: 1843 [2023-12-21 05:22:51,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=251, Invalid=5755, Unknown=0, NotChecked=0, Total=6006 [2023-12-21 05:22:51,986 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 88 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 05:22:51,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 1718 Invalid, 2333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 05:22:51,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2023-12-21 05:22:54,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1843. [2023-12-21 05:22:54,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1842 states have (on average 1.0711183496199783) internal successors, (1973), 1842 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:54,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 1973 transitions. [2023-12-21 05:22:54,093 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 1973 transitions. Word has length 53 [2023-12-21 05:22:54,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:22:54,093 INFO L495 AbstractCegarLoop]: Abstraction has 1843 states and 1973 transitions. [2023-12-21 05:22:54,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.3) internal successors, (78), 60 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:54,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 1973 transitions. [2023-12-21 05:22:54,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 05:22:54,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:22:54,095 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:22:54,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Forceful destruction successful, exit code 0 [2023-12-21 05:22:54,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:54,300 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:22:54,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:22:54,300 INFO L85 PathProgramCache]: Analyzing trace with hash -115504016, now seen corresponding path program 158 times [2023-12-21 05:22:54,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:22:54,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772490943] [2023-12-21 05:22:54,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:22:54,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:22:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:22:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:22:54,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:22:54,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772490943] [2023-12-21 05:22:54,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772490943] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:22:54,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110628273] [2023-12-21 05:22:54,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:22:54,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:54,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:22:54,849 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:22:54,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2023-12-21 05:22:54,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:22:54,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:22:54,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-21 05:22:54,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:22:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:22:55,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:22:55,716 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:22:55,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110628273] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:22:55,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:22:55,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 58 [2023-12-21 05:22:55,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619169650] [2023-12-21 05:22:55,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:22:55,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-21 05:22:55,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:22:55,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-21 05:22:55,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=3149, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 05:22:55,718 INFO L87 Difference]: Start difference. First operand 1843 states and 1973 transitions. Second operand has 58 states, 58 states have (on average 1.3103448275862069) internal successors, (76), 58 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:58,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:22:58,662 INFO L93 Difference]: Finished difference Result 1864 states and 1993 transitions. [2023-12-21 05:22:58,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 05:22:58,662 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.3103448275862069) internal successors, (76), 58 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-21 05:22:58,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:22:58,664 INFO L225 Difference]: With dead ends: 1864 [2023-12-21 05:22:58,664 INFO L226 Difference]: Without dead ends: 1827 [2023-12-21 05:22:58,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=249, Invalid=5301, Unknown=0, NotChecked=0, Total=5550 [2023-12-21 05:22:58,665 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 71 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 05:22:58,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1366 Invalid, 1912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1911 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 05:22:58,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2023-12-21 05:23:00,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1827. [2023-12-21 05:23:00,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1826 states have (on average 1.0711938663745892) internal successors, (1956), 1826 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:00,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 1956 transitions. [2023-12-21 05:23:00,773 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 1956 transitions. Word has length 53 [2023-12-21 05:23:00,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:23:00,773 INFO L495 AbstractCegarLoop]: Abstraction has 1827 states and 1956 transitions. [2023-12-21 05:23:00,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.3103448275862069) internal successors, (76), 58 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:00,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 1956 transitions. [2023-12-21 05:23:00,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 05:23:00,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:23:00,775 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:23:00,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Forceful destruction successful, exit code 0 [2023-12-21 05:23:00,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2023-12-21 05:23:00,979 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:23:00,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:23:00,979 INFO L85 PathProgramCache]: Analyzing trace with hash -2140153076, now seen corresponding path program 159 times [2023-12-21 05:23:00,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:23:00,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073218564] [2023-12-21 05:23:00,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:23:00,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:23:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:23:01,396 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:23:01,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:23:01,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073218564] [2023-12-21 05:23:01,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073218564] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:23:01,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798149270] [2023-12-21 05:23:01,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:23:01,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:01,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:23:01,398 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:23:01,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2023-12-21 05:23:01,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-21 05:23:01,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:23:01,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-21 05:23:01,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:23:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:23:01,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:23:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:23:02,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798149270] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:23:02,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:23:02,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 56 [2023-12-21 05:23:02,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251077288] [2023-12-21 05:23:02,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:23:02,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-21 05:23:02,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:23:02,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-21 05:23:02,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2924, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 05:23:02,121 INFO L87 Difference]: Start difference. First operand 1827 states and 1956 transitions. Second operand has 56 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 56 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:04,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:23:04,998 INFO L93 Difference]: Finished difference Result 1847 states and 1975 transitions. [2023-12-21 05:23:04,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 05:23:04,999 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 56 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-21 05:23:04,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:23:05,000 INFO L225 Difference]: With dead ends: 1847 [2023-12-21 05:23:05,001 INFO L226 Difference]: Without dead ends: 1809 [2023-12-21 05:23:05,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=247, Invalid=4865, Unknown=0, NotChecked=0, Total=5112 [2023-12-21 05:23:05,001 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 56 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:23:05,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1114 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:23:05,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2023-12-21 05:23:07,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1809. [2023-12-21 05:23:07,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.071349557522124) internal successors, (1937), 1808 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:07,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 1937 transitions. [2023-12-21 05:23:07,057 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 1937 transitions. Word has length 53 [2023-12-21 05:23:07,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:23:07,057 INFO L495 AbstractCegarLoop]: Abstraction has 1809 states and 1937 transitions. [2023-12-21 05:23:07,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 56 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:07,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 1937 transitions. [2023-12-21 05:23:07,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 05:23:07,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:23:07,058 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:23:07,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Forceful destruction successful, exit code 0 [2023-12-21 05:23:07,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2023-12-21 05:23:07,263 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:23:07,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:23:07,263 INFO L85 PathProgramCache]: Analyzing trace with hash 545132656, now seen corresponding path program 160 times [2023-12-21 05:23:07,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:23:07,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568687598] [2023-12-21 05:23:07,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:23:07,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:23:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:23:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 05:23:07,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:23:07,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568687598] [2023-12-21 05:23:07,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568687598] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:23:07,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099972434] [2023-12-21 05:23:07,696 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:23:07,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:07,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:23:07,698 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:23:07,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2023-12-21 05:23:07,755 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:23:07,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:23:07,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 05:23:07,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:23:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 05:23:08,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:23:08,506 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 05:23:08,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099972434] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:23:08,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:23:08,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 54 [2023-12-21 05:23:08,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201381566] [2023-12-21 05:23:08,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:23:08,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-21 05:23:08,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:23:08,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-21 05:23:08,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2707, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 05:23:08,507 INFO L87 Difference]: Start difference. First operand 1809 states and 1937 transitions. Second operand has 54 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:11,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:23:11,219 INFO L93 Difference]: Finished difference Result 1828 states and 1955 transitions. [2023-12-21 05:23:11,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 05:23:11,220 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-21 05:23:11,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:23:11,221 INFO L225 Difference]: With dead ends: 1828 [2023-12-21 05:23:11,221 INFO L226 Difference]: Without dead ends: 1789 [2023-12-21 05:23:11,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=245, Invalid=4447, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 05:23:11,222 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 38 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:23:11,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 854 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:23:11,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2023-12-21 05:23:13,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1789. [2023-12-21 05:23:13,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1789 states, 1788 states have (on average 1.0715883668903803) internal successors, (1916), 1788 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:13,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 1916 transitions. [2023-12-21 05:23:13,308 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 1916 transitions. Word has length 53 [2023-12-21 05:23:13,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:23:13,308 INFO L495 AbstractCegarLoop]: Abstraction has 1789 states and 1916 transitions. [2023-12-21 05:23:13,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:13,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 1916 transitions. [2023-12-21 05:23:13,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 05:23:13,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:23:13,309 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:23:13,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Forceful destruction successful, exit code 0 [2023-12-21 05:23:13,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2023-12-21 05:23:13,514 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:23:13,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:23:13,515 INFO L85 PathProgramCache]: Analyzing trace with hash -414726388, now seen corresponding path program 161 times [2023-12-21 05:23:13,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:23:13,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506683510] [2023-12-21 05:23:13,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:23:13,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:23:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:23:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-21 05:23:13,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:23:13,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506683510] [2023-12-21 05:23:13,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506683510] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:23:13,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613716004] [2023-12-21 05:23:13,913 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:23:13,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:13,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:23:13,914 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:23:13,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2023-12-21 05:23:13,968 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-21 05:23:13,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:23:13,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-21 05:23:13,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:23:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 137 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-21 05:23:14,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:23:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-21 05:23:14,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613716004] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:23:14,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:23:14,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 37, 28] total 61 [2023-12-21 05:23:14,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510940980] [2023-12-21 05:23:14,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:23:14,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-21 05:23:14,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:23:14,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-21 05:23:14,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=3479, Unknown=0, NotChecked=0, Total=3660 [2023-12-21 05:23:14,992 INFO L87 Difference]: Start difference. First operand 1789 states and 1916 transitions. Second operand has 61 states, 61 states have (on average 1.3114754098360655) internal successors, (80), 61 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:17,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:23:17,979 INFO L93 Difference]: Finished difference Result 1821 states and 1951 transitions. [2023-12-21 05:23:17,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-21 05:23:17,980 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.3114754098360655) internal successors, (80), 61 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-21 05:23:17,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:23:17,981 INFO L225 Difference]: With dead ends: 1821 [2023-12-21 05:23:17,981 INFO L226 Difference]: Without dead ends: 1816 [2023-12-21 05:23:17,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1410 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=324, Invalid=6648, Unknown=0, NotChecked=0, Total=6972 [2023-12-21 05:23:17,982 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 56 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 2194 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 2195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 05:23:17,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1024 Invalid, 2195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2194 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 05:23:17,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2023-12-21 05:23:20,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1805. [2023-12-21 05:23:20,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1804 states have (on average 1.0720620842572062) internal successors, (1934), 1804 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 1934 transitions. [2023-12-21 05:23:20,051 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 1934 transitions. Word has length 53 [2023-12-21 05:23:20,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:23:20,051 INFO L495 AbstractCegarLoop]: Abstraction has 1805 states and 1934 transitions. [2023-12-21 05:23:20,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.3114754098360655) internal successors, (80), 61 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 1934 transitions. [2023-12-21 05:23:20,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 05:23:20,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:23:20,053 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:23:20,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Forceful destruction successful, exit code 0 [2023-12-21 05:23:20,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:20,258 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:23:20,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:23:20,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1654961786, now seen corresponding path program 162 times [2023-12-21 05:23:20,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:23:20,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283776892] [2023-12-21 05:23:20,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:23:20,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:23:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:23:21,041 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 18 proven. 306 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:23:21,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:23:21,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283776892] [2023-12-21 05:23:21,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283776892] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:23:21,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863704878] [2023-12-21 05:23:21,042 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:23:21,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:21,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:23:21,043 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:23:21,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2023-12-21 05:23:21,105 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-12-21 05:23:21,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:23:21,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 05:23:21,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:23:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 18 proven. 306 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:23:22,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:23:24,071 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 18 proven. 306 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:23:24,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863704878] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:23:24,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:23:24,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 94 [2023-12-21 05:23:24,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685019189] [2023-12-21 05:23:24,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:23:24,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2023-12-21 05:23:24,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:23:24,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2023-12-21 05:23:24,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=8481, Unknown=0, NotChecked=0, Total=8742 [2023-12-21 05:23:24,073 INFO L87 Difference]: Start difference. First operand 1805 states and 1934 transitions. Second operand has 94 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 94 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:35,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:23:35,134 INFO L93 Difference]: Finished difference Result 3172 states and 3344 transitions. [2023-12-21 05:23:35,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-21 05:23:35,135 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 94 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-21 05:23:35,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:23:35,137 INFO L225 Difference]: With dead ends: 3172 [2023-12-21 05:23:35,137 INFO L226 Difference]: Without dead ends: 3106 [2023-12-21 05:23:35,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 36 SyntacticMatches, 17 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3697 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=3781, Invalid=22301, Unknown=0, NotChecked=0, Total=26082 [2023-12-21 05:23:35,139 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 1082 mSDsluCounter, 2209 mSDsCounter, 0 mSdLazyCounter, 2068 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 05:23:35,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 2246 Invalid, 2142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2068 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 05:23:35,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2023-12-21 05:23:37,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 1934. [2023-12-21 05:23:37,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1933 states have (on average 1.0719089498189343) internal successors, (2072), 1933 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 2072 transitions. [2023-12-21 05:23:37,402 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 2072 transitions. Word has length 54 [2023-12-21 05:23:37,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:23:37,402 INFO L495 AbstractCegarLoop]: Abstraction has 1934 states and 2072 transitions. [2023-12-21 05:23:37,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 94 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:37,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 2072 transitions. [2023-12-21 05:23:37,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 05:23:37,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:23:37,404 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:23:37,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Forceful destruction successful, exit code 0 [2023-12-21 05:23:37,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2023-12-21 05:23:37,609 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:23:37,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:23:37,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1797075539, now seen corresponding path program 163 times [2023-12-21 05:23:37,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:23:37,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328746438] [2023-12-21 05:23:37,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:23:37,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:23:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:23:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:23:38,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:23:38,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328746438] [2023-12-21 05:23:38,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328746438] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:23:38,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724034187] [2023-12-21 05:23:38,369 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:23:38,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:38,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:23:38,370 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:23:38,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2023-12-21 05:23:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:23:38,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 05:23:38,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:23:39,975 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:23:39,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:23:41,366 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 18 proven. 306 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:23:41,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724034187] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:23:41,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:23:41,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 94 [2023-12-21 05:23:41,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542548075] [2023-12-21 05:23:41,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:23:41,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2023-12-21 05:23:41,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:23:41,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2023-12-21 05:23:41,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=8482, Unknown=0, NotChecked=0, Total=8742 [2023-12-21 05:23:41,368 INFO L87 Difference]: Start difference. First operand 1934 states and 2072 transitions. Second operand has 94 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 94 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:49,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:23:49,311 INFO L93 Difference]: Finished difference Result 2008 states and 2155 transitions. [2023-12-21 05:23:49,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-21 05:23:49,311 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 94 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-21 05:23:49,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:23:49,313 INFO L225 Difference]: With dead ends: 2008 [2023-12-21 05:23:49,313 INFO L226 Difference]: Without dead ends: 1975 [2023-12-21 05:23:49,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 35 SyntacticMatches, 18 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2879 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1449, Invalid=19431, Unknown=0, NotChecked=0, Total=20880 [2023-12-21 05:23:49,314 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 1518 mSDsluCounter, 4431 mSDsCounter, 0 mSdLazyCounter, 4724 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 4505 SdHoareTripleChecker+Invalid, 4908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 4724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 05:23:49,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 4505 Invalid, 4908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 4724 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 05:23:49,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2023-12-21 05:23:51,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1943. [2023-12-21 05:23:51,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1942 states have (on average 1.0715756951596291) internal successors, (2081), 1942 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:51,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 2081 transitions. [2023-12-21 05:23:51,675 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 2081 transitions. Word has length 54 [2023-12-21 05:23:51,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:23:51,675 INFO L495 AbstractCegarLoop]: Abstraction has 1943 states and 2081 transitions. [2023-12-21 05:23:51,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 94 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:51,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 2081 transitions. [2023-12-21 05:23:51,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 05:23:51,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:23:51,677 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:23:51,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Ended with exit code 0 [2023-12-21 05:23:51,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable172 [2023-12-21 05:23:51,881 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:23:51,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:23:51,882 INFO L85 PathProgramCache]: Analyzing trace with hash 57576187, now seen corresponding path program 164 times [2023-12-21 05:23:51,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:23:51,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536805249] [2023-12-21 05:23:51,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:23:51,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:23:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:23:52,062 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 46 proven. 54 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-21 05:23:52,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:23:52,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536805249] [2023-12-21 05:23:52,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536805249] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:23:52,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802465319] [2023-12-21 05:23:52,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:23:52,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:52,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:23:52,064 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:23:52,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2023-12-21 05:23:52,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:23:52,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:23:52,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 05:23:52,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:23:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-21 05:23:52,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:23:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-21 05:23:52,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802465319] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:23:52,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:23:52,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 34 [2023-12-21 05:23:52,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521860165] [2023-12-21 05:23:52,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:23:52,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 05:23:52,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:23:52,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 05:23:52,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 05:23:52,461 INFO L87 Difference]: Start difference. First operand 1943 states and 2081 transitions. Second operand has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:55,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:23:55,757 INFO L93 Difference]: Finished difference Result 2073 states and 2232 transitions. [2023-12-21 05:23:55,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-21 05:23:55,757 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-21 05:23:55,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:23:55,760 INFO L225 Difference]: With dead ends: 2073 [2023-12-21 05:23:55,760 INFO L226 Difference]: Without dead ends: 2054 [2023-12-21 05:23:55,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 78 SyntacticMatches, 18 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1670 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1380, Invalid=4626, Unknown=0, NotChecked=0, Total=6006 [2023-12-21 05:23:55,761 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 115 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:23:55,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 225 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:23:55,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2023-12-21 05:23:58,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 2001. [2023-12-21 05:23:58,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 2000 states have (on average 1.079) internal successors, (2158), 2000 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:58,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 2158 transitions. [2023-12-21 05:23:58,189 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 2158 transitions. Word has length 54 [2023-12-21 05:23:58,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:23:58,189 INFO L495 AbstractCegarLoop]: Abstraction has 2001 states and 2158 transitions. [2023-12-21 05:23:58,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:58,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 2158 transitions. [2023-12-21 05:23:58,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 05:23:58,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:23:58,191 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:23:58,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Ended with exit code 0 [2023-12-21 05:23:58,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:58,395 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:23:58,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:23:58,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1680679122, now seen corresponding path program 165 times [2023-12-21 05:23:58,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:23:58,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508054714] [2023-12-21 05:23:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:23:58,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:23:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:23:58,571 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 46 proven. 54 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-21 05:23:58,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:23:58,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508054714] [2023-12-21 05:23:58,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508054714] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:23:58,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508441202] [2023-12-21 05:23:58,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:23:58,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:58,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:23:58,572 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:23:58,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2023-12-21 05:23:58,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-21 05:23:58,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:23:58,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 05:23:58,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:23:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-21 05:23:58,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:23:58,887 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-21 05:23:58,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508441202] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:23:58,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:23:58,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 34 [2023-12-21 05:23:58,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797029354] [2023-12-21 05:23:58,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:23:58,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 05:23:58,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:23:58,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 05:23:58,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 05:23:58,889 INFO L87 Difference]: Start difference. First operand 2001 states and 2158 transitions. Second operand has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:02,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:24:02,154 INFO L93 Difference]: Finished difference Result 2572 states and 2822 transitions. [2023-12-21 05:24:02,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-21 05:24:02,155 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-21 05:24:02,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:24:02,165 INFO L225 Difference]: With dead ends: 2572 [2023-12-21 05:24:02,165 INFO L226 Difference]: Without dead ends: 2237 [2023-12-21 05:24:02,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 78 SyntacticMatches, 18 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1670 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1380, Invalid=4626, Unknown=0, NotChecked=0, Total=6006 [2023-12-21 05:24:02,166 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 107 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:24:02,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 208 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:24:02,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2023-12-21 05:24:04,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 2219. [2023-12-21 05:24:04,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2219 states, 2218 states have (on average 1.0798016230838594) internal successors, (2395), 2218 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:04,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 2395 transitions. [2023-12-21 05:24:04,861 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 2395 transitions. Word has length 54 [2023-12-21 05:24:04,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:24:04,861 INFO L495 AbstractCegarLoop]: Abstraction has 2219 states and 2395 transitions. [2023-12-21 05:24:04,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:04,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 2395 transitions. [2023-12-21 05:24:04,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 05:24:04,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:24:04,863 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:24:04,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Forceful destruction successful, exit code 0 [2023-12-21 05:24:05,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:05,068 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:24:05,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:24:05,069 INFO L85 PathProgramCache]: Analyzing trace with hash -430042119, now seen corresponding path program 166 times [2023-12-21 05:24:05,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:24:05,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913458264] [2023-12-21 05:24:05,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:24:05,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:24:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:24:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 344 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:24:05,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:24:05,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913458264] [2023-12-21 05:24:05,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913458264] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:24:05,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657935471] [2023-12-21 05:24:05,909 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:24:05,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:05,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:24:05,910 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:24:05,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2023-12-21 05:24:05,980 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:24:05,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:24:05,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 98 conjunts are in the unsatisfiable core [2023-12-21 05:24:05,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:24:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 344 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:24:06,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:24:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 344 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:24:06,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657935471] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:24:06,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:24:06,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 71 [2023-12-21 05:24:06,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199492313] [2023-12-21 05:24:06,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:24:06,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-12-21 05:24:06,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:24:06,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-12-21 05:24:06,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=4801, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 05:24:06,877 INFO L87 Difference]: Start difference. First operand 2219 states and 2395 transitions. Second operand has 71 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 71 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:11,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:24:11,375 INFO L93 Difference]: Finished difference Result 2341 states and 2528 transitions. [2023-12-21 05:24:11,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 05:24:11,375 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 71 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 05:24:11,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:24:11,378 INFO L225 Difference]: With dead ends: 2341 [2023-12-21 05:24:11,378 INFO L226 Difference]: Without dead ends: 2333 [2023-12-21 05:24:11,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1149 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=270, Invalid=8472, Unknown=0, NotChecked=0, Total=8742 [2023-12-21 05:24:11,378 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 168 mSDsluCounter, 3449 mSDsCounter, 0 mSdLazyCounter, 4290 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 3517 SdHoareTripleChecker+Invalid, 4291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:24:11,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 3517 Invalid, 4291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4290 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 05:24:11,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2023-12-21 05:24:14,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 2227. [2023-12-21 05:24:14,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 2226 states have (on average 1.0799640610961365) internal successors, (2404), 2226 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:14,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 2404 transitions. [2023-12-21 05:24:14,121 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 2404 transitions. Word has length 55 [2023-12-21 05:24:14,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:24:14,121 INFO L495 AbstractCegarLoop]: Abstraction has 2227 states and 2404 transitions. [2023-12-21 05:24:14,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 71 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:14,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 2404 transitions. [2023-12-21 05:24:14,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 05:24:14,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:24:14,123 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:24:14,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Forceful destruction successful, exit code 0 [2023-12-21 05:24:14,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:14,328 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:24:14,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:24:14,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1813048839, now seen corresponding path program 167 times [2023-12-21 05:24:14,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:24:14,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356069211] [2023-12-21 05:24:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:24:14,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:24:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:24:15,053 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 278 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:24:15,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:24:15,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356069211] [2023-12-21 05:24:15,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356069211] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:24:15,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409790725] [2023-12-21 05:24:15,055 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:24:15,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:15,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:24:15,056 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:24:15,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2023-12-21 05:24:15,125 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-12-21 05:24:15,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:24:15,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 94 conjunts are in the unsatisfiable core [2023-12-21 05:24:15,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:24:15,945 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 278 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:24:15,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:24:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 278 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:24:16,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409790725] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:24:16,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:24:16,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 69 [2023-12-21 05:24:16,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294911718] [2023-12-21 05:24:16,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:24:16,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-21 05:24:16,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:24:16,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-21 05:24:16,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=4524, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 05:24:16,111 INFO L87 Difference]: Start difference. First operand 2227 states and 2404 transitions. Second operand has 69 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 69 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:20,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:24:20,164 INFO L93 Difference]: Finished difference Result 2253 states and 2429 transitions. [2023-12-21 05:24:20,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-21 05:24:20,164 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 69 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 05:24:20,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:24:20,167 INFO L225 Difference]: With dead ends: 2253 [2023-12-21 05:24:20,167 INFO L226 Difference]: Without dead ends: 2219 [2023-12-21 05:24:20,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=268, Invalid=7922, Unknown=0, NotChecked=0, Total=8190 [2023-12-21 05:24:20,167 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 144 mSDsluCounter, 3251 mSDsCounter, 0 mSdLazyCounter, 4100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 3315 SdHoareTripleChecker+Invalid, 4101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 05:24:20,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 3315 Invalid, 4101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4100 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 05:24:20,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2023-12-21 05:24:22,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 2219. [2023-12-21 05:24:22,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2219 states, 2218 states have (on average 1.0798016230838594) internal successors, (2395), 2218 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:22,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 2395 transitions. [2023-12-21 05:24:22,849 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 2395 transitions. Word has length 55 [2023-12-21 05:24:22,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:24:22,849 INFO L495 AbstractCegarLoop]: Abstraction has 2219 states and 2395 transitions. [2023-12-21 05:24:22,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 69 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:22,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 2395 transitions. [2023-12-21 05:24:22,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 05:24:22,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:24:22,850 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:24:22,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Ended with exit code 0 [2023-12-21 05:24:23,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:23,055 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:24:23,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:24:23,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1748737017, now seen corresponding path program 168 times [2023-12-21 05:24:23,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:24:23,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648975073] [2023-12-21 05:24:23,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:24:23,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:24:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:24:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:24:23,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:24:23,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648975073] [2023-12-21 05:24:23,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648975073] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:24:23,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949161320] [2023-12-21 05:24:23,799 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:24:23,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:23,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:24:23,800 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:24:23,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2023-12-21 05:24:23,871 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-12-21 05:24:23,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:24:23,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 90 conjunts are in the unsatisfiable core [2023-12-21 05:24:23,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:24:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:24:24,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:24:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:24:24,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949161320] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:24:24,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:24:24,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 67 [2023-12-21 05:24:24,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917023954] [2023-12-21 05:24:24,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:24:24,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-21 05:24:24,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:24:24,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-21 05:24:24,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=4255, Unknown=0, NotChecked=0, Total=4422 [2023-12-21 05:24:24,751 INFO L87 Difference]: Start difference. First operand 2219 states and 2395 transitions. Second operand has 67 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 67 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:28,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:24:28,752 INFO L93 Difference]: Finished difference Result 2244 states and 2419 transitions. [2023-12-21 05:24:28,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-21 05:24:28,752 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 67 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 05:24:28,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:24:28,755 INFO L225 Difference]: With dead ends: 2244 [2023-12-21 05:24:28,755 INFO L226 Difference]: Without dead ends: 2209 [2023-12-21 05:24:28,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=266, Invalid=7390, Unknown=0, NotChecked=0, Total=7656 [2023-12-21 05:24:28,755 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 129 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 3240 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 3241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 05:24:28,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2537 Invalid, 3241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3240 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 05:24:28,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2209 states. [2023-12-21 05:24:31,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2209 to 2209. [2023-12-21 05:24:31,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 2208 states have (on average 1.0797101449275361) internal successors, (2384), 2208 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:31,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 2384 transitions. [2023-12-21 05:24:31,546 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 2384 transitions. Word has length 55 [2023-12-21 05:24:31,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:24:31,546 INFO L495 AbstractCegarLoop]: Abstraction has 2209 states and 2384 transitions. [2023-12-21 05:24:31,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 67 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:31,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 2384 transitions. [2023-12-21 05:24:31,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 05:24:31,548 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:24:31,548 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:24:31,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Ended with exit code 0 [2023-12-21 05:24:31,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2023-12-21 05:24:31,753 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:24:31,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:24:31,754 INFO L85 PathProgramCache]: Analyzing trace with hash -85358087, now seen corresponding path program 169 times [2023-12-21 05:24:31,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:24:31,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495042117] [2023-12-21 05:24:31,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:24:31,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:24:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:24:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:24:32,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:24:32,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495042117] [2023-12-21 05:24:32,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495042117] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:24:32,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710841146] [2023-12-21 05:24:32,482 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:24:32,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:32,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:24:32,483 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:24:32,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2023-12-21 05:24:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:24:32,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 86 conjunts are in the unsatisfiable core [2023-12-21 05:24:32,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:24:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:24:32,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:24:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:24:33,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710841146] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:24:33,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:24:33,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 67 [2023-12-21 05:24:33,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742101463] [2023-12-21 05:24:33,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:24:33,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-21 05:24:33,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:24:33,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-21 05:24:33,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=4249, Unknown=0, NotChecked=0, Total=4422 [2023-12-21 05:24:33,557 INFO L87 Difference]: Start difference. First operand 2209 states and 2384 transitions. Second operand has 67 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 67 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:37,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:24:37,462 INFO L93 Difference]: Finished difference Result 2233 states and 2407 transitions. [2023-12-21 05:24:37,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 05:24:37,462 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 67 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 05:24:37,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:24:37,465 INFO L225 Difference]: With dead ends: 2233 [2023-12-21 05:24:37,465 INFO L226 Difference]: Without dead ends: 2197 [2023-12-21 05:24:37,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=271, Invalid=7211, Unknown=0, NotChecked=0, Total=7482 [2023-12-21 05:24:37,465 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 111 mSDsluCounter, 2313 mSDsCounter, 0 mSdLazyCounter, 3062 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 2365 SdHoareTripleChecker+Invalid, 3063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 05:24:37,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 2365 Invalid, 3063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3062 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 05:24:37,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2197 states. [2023-12-21 05:24:40,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2197 to 2197. [2023-12-21 05:24:40,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2197 states, 2196 states have (on average 1.0796903460837888) internal successors, (2371), 2196 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2197 states to 2197 states and 2371 transitions. [2023-12-21 05:24:40,136 INFO L78 Accepts]: Start accepts. Automaton has 2197 states and 2371 transitions. Word has length 55 [2023-12-21 05:24:40,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:24:40,136 INFO L495 AbstractCegarLoop]: Abstraction has 2197 states and 2371 transitions. [2023-12-21 05:24:40,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 67 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:40,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2197 states and 2371 transitions. [2023-12-21 05:24:40,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 05:24:40,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:24:40,138 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:24:40,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Ended with exit code 0 [2023-12-21 05:24:40,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 172 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2023-12-21 05:24:40,343 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:24:40,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:24:40,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1921590265, now seen corresponding path program 170 times [2023-12-21 05:24:40,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:24:40,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463241100] [2023-12-21 05:24:40,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:24:40,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:24:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:24:40,927 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:24:40,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:24:40,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463241100] [2023-12-21 05:24:40,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463241100] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:24:40,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071365668] [2023-12-21 05:24:40,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:24:40,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:40,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:24:40,929 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:24:40,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2023-12-21 05:24:40,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:24:40,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:24:40,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-21 05:24:40,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:24:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:24:41,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:24:41,912 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:24:41,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071365668] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:24:41,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:24:41,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 63 [2023-12-21 05:24:41,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419276165] [2023-12-21 05:24:41,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:24:41,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-21 05:24:41,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:24:41,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-21 05:24:41,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=3741, Unknown=0, NotChecked=0, Total=3906 [2023-12-21 05:24:41,913 INFO L87 Difference]: Start difference. First operand 2197 states and 2371 transitions. Second operand has 63 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 63 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:45,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:24:45,569 INFO L93 Difference]: Finished difference Result 2220 states and 2393 transitions. [2023-12-21 05:24:45,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 05:24:45,570 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 63 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 05:24:45,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:24:45,572 INFO L225 Difference]: With dead ends: 2220 [2023-12-21 05:24:45,572 INFO L226 Difference]: Without dead ends: 2183 [2023-12-21 05:24:45,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=262, Invalid=6380, Unknown=0, NotChecked=0, Total=6642 [2023-12-21 05:24:45,573 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 97 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 2455 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 2456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 05:24:45,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1816 Invalid, 2456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2455 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 05:24:45,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2183 states. [2023-12-21 05:24:48,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2183 to 2183. [2023-12-21 05:24:48,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2183 states, 2182 states have (on average 1.07974335472044) internal successors, (2356), 2182 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:48,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 2356 transitions. [2023-12-21 05:24:48,217 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 2356 transitions. Word has length 55 [2023-12-21 05:24:48,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:24:48,217 INFO L495 AbstractCegarLoop]: Abstraction has 2183 states and 2356 transitions. [2023-12-21 05:24:48,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 63 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:48,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 2356 transitions. [2023-12-21 05:24:48,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 05:24:48,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:24:48,219 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:24:48,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Forceful destruction successful, exit code 0 [2023-12-21 05:24:48,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2023-12-21 05:24:48,424 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:24:48,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:24:48,424 INFO L85 PathProgramCache]: Analyzing trace with hash 87294457, now seen corresponding path program 171 times [2023-12-21 05:24:48,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:24:48,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049730285] [2023-12-21 05:24:48,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:24:48,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:24:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:24:49,035 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:24:49,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:24:49,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049730285] [2023-12-21 05:24:49,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049730285] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:24:49,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051986827] [2023-12-21 05:24:49,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:24:49,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:49,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:24:49,037 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:24:49,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2023-12-21 05:24:49,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-21 05:24:49,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:24:49,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-21 05:24:49,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:24:49,481 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:24:49,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:24:50,086 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:24:50,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051986827] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:24:50,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:24:50,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 65 [2023-12-21 05:24:50,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967197808] [2023-12-21 05:24:50,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:24:50,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-21 05:24:50,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:24:50,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-21 05:24:50,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=3981, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 05:24:50,087 INFO L87 Difference]: Start difference. First operand 2183 states and 2356 transitions. Second operand has 65 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:53,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:24:53,679 INFO L93 Difference]: Finished difference Result 2205 states and 2377 transitions. [2023-12-21 05:24:53,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 05:24:53,680 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 05:24:53,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:24:53,682 INFO L225 Difference]: With dead ends: 2205 [2023-12-21 05:24:53,682 INFO L226 Difference]: Without dead ends: 2167 [2023-12-21 05:24:53,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=275, Invalid=6531, Unknown=0, NotChecked=0, Total=6806 [2023-12-21 05:24:53,683 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 81 mSDsluCounter, 1561 mSDsCounter, 0 mSdLazyCounter, 2248 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 2249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 05:24:53,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1601 Invalid, 2249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2248 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 05:24:53,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2023-12-21 05:24:56,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 2167. [2023-12-21 05:24:56,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 2166 states have (on average 1.079870729455217) internal successors, (2339), 2166 states have internal predecessors, (2339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:56,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 2339 transitions. [2023-12-21 05:24:56,367 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 2339 transitions. Word has length 55 [2023-12-21 05:24:56,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:24:56,367 INFO L495 AbstractCegarLoop]: Abstraction has 2167 states and 2339 transitions. [2023-12-21 05:24:56,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:56,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 2339 transitions. [2023-12-21 05:24:56,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 05:24:56,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:24:56,369 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:24:56,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Forceful destruction successful, exit code 0 [2023-12-21 05:24:56,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:56,574 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:24:56,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:24:56,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1841736697, now seen corresponding path program 172 times [2023-12-21 05:24:56,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:24:56,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780299545] [2023-12-21 05:24:56,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:24:56,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:24:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:24:57,114 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:24:57,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:24:57,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780299545] [2023-12-21 05:24:57,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780299545] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:24:57,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896926726] [2023-12-21 05:24:57,115 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:24:57,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:57,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:24:57,116 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:24:57,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2023-12-21 05:24:57,167 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:24:57,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:24:57,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-21 05:24:57,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:24:57,861 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:24:57,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:24:58,004 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:24:58,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896926726] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:24:58,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:24:58,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 59 [2023-12-21 05:24:58,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022347065] [2023-12-21 05:24:58,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:24:58,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-21 05:24:58,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:24:58,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-21 05:24:58,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=3259, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 05:24:58,006 INFO L87 Difference]: Start difference. First operand 2167 states and 2339 transitions. Second operand has 59 states, 59 states have (on average 1.305084745762712) internal successors, (77), 59 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:01,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:25:01,365 INFO L93 Difference]: Finished difference Result 2188 states and 2359 transitions. [2023-12-21 05:25:01,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 05:25:01,366 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.305084745762712) internal successors, (77), 59 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 05:25:01,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:25:01,368 INFO L225 Difference]: With dead ends: 2188 [2023-12-21 05:25:01,368 INFO L226 Difference]: Without dead ends: 2149 [2023-12-21 05:25:01,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=258, Invalid=5442, Unknown=0, NotChecked=0, Total=5700 [2023-12-21 05:25:01,369 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 64 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:25:01,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1228 Invalid, 1810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:25:01,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2023-12-21 05:25:03,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 2149. [2023-12-21 05:25:03,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 2148 states have (on average 1.080074487895717) internal successors, (2320), 2148 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:03,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 2320 transitions. [2023-12-21 05:25:03,999 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 2320 transitions. Word has length 55 [2023-12-21 05:25:04,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:25:04,000 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 2320 transitions. [2023-12-21 05:25:04,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.305084745762712) internal successors, (77), 59 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:04,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 2320 transitions. [2023-12-21 05:25:04,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 05:25:04,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:25:04,001 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:25:04,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Ended with exit code 0 [2023-12-21 05:25:04,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable181 [2023-12-21 05:25:04,206 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:25:04,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:25:04,206 INFO L85 PathProgramCache]: Analyzing trace with hash -900826631, now seen corresponding path program 173 times [2023-12-21 05:25:04,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:25:04,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226518080] [2023-12-21 05:25:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:25:04,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:25:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:25:04,666 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 05:25:04,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:25:04,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226518080] [2023-12-21 05:25:04,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226518080] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:25:04,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518714388] [2023-12-21 05:25:04,667 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:25:04,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:04,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:25:04,668 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:25:04,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2023-12-21 05:25:04,732 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-21 05:25:04,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:25:04,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-21 05:25:04,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:25:05,325 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 05:25:05,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:25:05,479 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 05:25:05,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518714388] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:25:05,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:25:05,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 57 [2023-12-21 05:25:05,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514943917] [2023-12-21 05:25:05,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:25:05,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-21 05:25:05,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:25:05,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-21 05:25:05,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=3030, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 05:25:05,480 INFO L87 Difference]: Start difference. First operand 2149 states and 2320 transitions. Second operand has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:08,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:25:08,802 INFO L93 Difference]: Finished difference Result 2169 states and 2339 transitions. [2023-12-21 05:25:08,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 05:25:08,803 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 05:25:08,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:25:08,805 INFO L225 Difference]: With dead ends: 2169 [2023-12-21 05:25:08,805 INFO L226 Difference]: Without dead ends: 2129 [2023-12-21 05:25:08,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=256, Invalid=5000, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 05:25:08,806 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 48 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:25:08,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 838 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:25:08,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2023-12-21 05:25:11,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 2129. [2023-12-21 05:25:11,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2128 states have (on average 1.0803571428571428) internal successors, (2299), 2128 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:11,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 2299 transitions. [2023-12-21 05:25:11,409 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 2299 transitions. Word has length 55 [2023-12-21 05:25:11,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:25:11,409 INFO L495 AbstractCegarLoop]: Abstraction has 2129 states and 2299 transitions. [2023-12-21 05:25:11,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:11,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 2299 transitions. [2023-12-21 05:25:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 05:25:11,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:25:11,411 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:25:11,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Ended with exit code 0 [2023-12-21 05:25:11,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:11,615 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:25:11,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:25:11,615 INFO L85 PathProgramCache]: Analyzing trace with hash -2134589890, now seen corresponding path program 174 times [2023-12-21 05:25:11,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:25:11,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302524639] [2023-12-21 05:25:11,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:25:11,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:25:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:25:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 10 proven. 91 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-21 05:25:11,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:25:11,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302524639] [2023-12-21 05:25:11,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302524639] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:25:11,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898432615] [2023-12-21 05:25:11,967 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:25:11,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:11,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:25:11,968 INFO L229 MonitoredProcess]: Starting monitored process 177 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:25:11,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Waiting until timeout for monitored process [2023-12-21 05:25:12,027 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-12-21 05:25:12,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:25:12,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 05:25:12,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:25:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-21 05:25:12,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:25:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-21 05:25:13,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898432615] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:25:13,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:25:13,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 55 [2023-12-21 05:25:13,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255008390] [2023-12-21 05:25:13,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:25:13,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-21 05:25:13,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:25:13,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-21 05:25:13,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2809, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 05:25:13,144 INFO L87 Difference]: Start difference. First operand 2129 states and 2299 transitions. Second operand has 55 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 55 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:18,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:25:18,087 INFO L93 Difference]: Finished difference Result 2507 states and 2713 transitions. [2023-12-21 05:25:18,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 05:25:18,088 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 55 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 05:25:18,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:25:18,090 INFO L225 Difference]: With dead ends: 2507 [2023-12-21 05:25:18,091 INFO L226 Difference]: Without dead ends: 2410 [2023-12-21 05:25:18,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 70 SyntacticMatches, 9 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1133 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1265, Invalid=7107, Unknown=0, NotChecked=0, Total=8372 [2023-12-21 05:25:18,091 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 920 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:25:18,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 1232 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:25:18,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2023-12-21 05:25:20,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 2305. [2023-12-21 05:25:20,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 2304 states have (on average 1.0737847222222223) internal successors, (2474), 2304 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:20,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 2474 transitions. [2023-12-21 05:25:20,863 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 2474 transitions. Word has length 55 [2023-12-21 05:25:20,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:25:20,863 INFO L495 AbstractCegarLoop]: Abstraction has 2305 states and 2474 transitions. [2023-12-21 05:25:20,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 55 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:20,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 2474 transitions. [2023-12-21 05:25:20,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 05:25:20,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:25:20,865 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:25:20,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Forceful destruction successful, exit code 0 [2023-12-21 05:25:21,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,177 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:21,070 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:25:21,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:25:21,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1032571911, now seen corresponding path program 175 times [2023-12-21 05:25:21,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:25:21,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782136226] [2023-12-21 05:25:21,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:25:21,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:25:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:25:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-21 05:25:21,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:25:21,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782136226] [2023-12-21 05:25:21,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782136226] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:25:21,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715546005] [2023-12-21 05:25:21,507 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:25:21,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:21,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:25:21,508 INFO L229 MonitoredProcess]: Starting monitored process 178 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:25:21,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Waiting until timeout for monitored process [2023-12-21 05:25:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:25:21,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 05:25:21,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:25:22,155 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-21 05:25:22,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:25:22,280 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-21 05:25:22,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715546005] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:25:22,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:25:22,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 55 [2023-12-21 05:25:22,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668517375] [2023-12-21 05:25:22,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:25:22,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-21 05:25:22,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:25:22,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-21 05:25:22,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2809, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 05:25:22,282 INFO L87 Difference]: Start difference. First operand 2305 states and 2474 transitions. Second operand has 55 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 55 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:25,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:25:25,717 INFO L93 Difference]: Finished difference Result 2353 states and 2526 transitions. [2023-12-21 05:25:25,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 05:25:25,718 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 55 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 05:25:25,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:25:25,720 INFO L225 Difference]: With dead ends: 2353 [2023-12-21 05:25:25,720 INFO L226 Difference]: Without dead ends: 2312 [2023-12-21 05:25:25,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=254, Invalid=4576, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 05:25:25,721 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 38 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:25:25,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 590 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:25:25,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2023-12-21 05:25:28,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 2297. [2023-12-21 05:25:28,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2297 states, 2296 states have (on average 1.0744773519163764) internal successors, (2467), 2296 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:28,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 2467 transitions. [2023-12-21 05:25:28,544 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 2467 transitions. Word has length 55 [2023-12-21 05:25:28,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:25:28,544 INFO L495 AbstractCegarLoop]: Abstraction has 2297 states and 2467 transitions. [2023-12-21 05:25:28,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 55 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:28,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 2467 transitions. [2023-12-21 05:25:28,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 05:25:28,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:25:28,546 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:25:28,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Forceful destruction successful, exit code 0 [2023-12-21 05:25:28,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,178 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:28,751 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:25:28,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:25:28,751 INFO L85 PathProgramCache]: Analyzing trace with hash 221048478, now seen corresponding path program 176 times [2023-12-21 05:25:28,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:25:28,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626468575] [2023-12-21 05:25:28,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:25:28,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:25:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:25:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-21 05:25:29,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:25:29,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626468575] [2023-12-21 05:25:29,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626468575] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:25:29,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355677736] [2023-12-21 05:25:29,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:25:29,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:29,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:25:29,104 INFO L229 MonitoredProcess]: Starting monitored process 179 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:25:29,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Waiting until timeout for monitored process [2023-12-21 05:25:29,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:25:29,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:25:29,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 05:25:29,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:25:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-21 05:25:29,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:25:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-21 05:25:30,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355677736] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:25:30,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:25:30,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 55 [2023-12-21 05:25:30,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309244107] [2023-12-21 05:25:30,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:25:30,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-21 05:25:30,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:25:30,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-21 05:25:30,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2809, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 05:25:30,360 INFO L87 Difference]: Start difference. First operand 2297 states and 2467 transitions. Second operand has 55 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 55 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:34,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:25:34,860 INFO L93 Difference]: Finished difference Result 2355 states and 2524 transitions. [2023-12-21 05:25:34,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 05:25:34,861 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 55 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 05:25:34,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:25:34,863 INFO L225 Difference]: With dead ends: 2355 [2023-12-21 05:25:34,863 INFO L226 Difference]: Without dead ends: 2302 [2023-12-21 05:25:34,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 69 SyntacticMatches, 10 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=589, Invalid=6217, Unknown=0, NotChecked=0, Total=6806 [2023-12-21 05:25:34,864 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 720 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 1865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 05:25:34,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1890 Invalid, 1865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1798 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 05:25:34,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2023-12-21 05:25:37,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2297. [2023-12-21 05:25:37,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2297 states, 2296 states have (on average 1.0666376306620209) internal successors, (2449), 2296 states have internal predecessors, (2449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:37,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 2449 transitions. [2023-12-21 05:25:37,737 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 2449 transitions. Word has length 55 [2023-12-21 05:25:37,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:25:37,737 INFO L495 AbstractCegarLoop]: Abstraction has 2297 states and 2449 transitions. [2023-12-21 05:25:37,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 55 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 2449 transitions. [2023-12-21 05:25:37,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 05:25:37,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:25:37,739 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:25:37,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Ended with exit code 0 [2023-12-21 05:25:37,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,179 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:37,943 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:25:37,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:25:37,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1001679059, now seen corresponding path program 177 times [2023-12-21 05:25:37,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:25:37,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117748675] [2023-12-21 05:25:37,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:25:37,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:25:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:25:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 19 proven. 342 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:25:38,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:25:38,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117748675] [2023-12-21 05:25:38,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117748675] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:25:38,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800016878] [2023-12-21 05:25:38,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:25:38,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:38,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:25:38,737 INFO L229 MonitoredProcess]: Starting monitored process 180 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:25:38,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Waiting until timeout for monitored process [2023-12-21 05:25:38,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-12-21 05:25:38,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:25:38,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 05:25:38,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:25:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 19 proven. 342 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:25:40,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:25:42,304 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 19 proven. 342 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:25:42,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800016878] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:25:42,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:25:42,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 99 [2023-12-21 05:25:42,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045521592] [2023-12-21 05:25:42,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:25:42,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2023-12-21 05:25:42,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:25:42,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2023-12-21 05:25:42,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=9427, Unknown=0, NotChecked=0, Total=9702 [2023-12-21 05:25:42,306 INFO L87 Difference]: Start difference. First operand 2297 states and 2449 transitions. Second operand has 99 states, 99 states have (on average 1.2727272727272727) internal successors, (126), 99 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:56,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:25:56,168 INFO L93 Difference]: Finished difference Result 3991 states and 4190 transitions. [2023-12-21 05:25:56,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-21 05:25:56,168 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.2727272727272727) internal successors, (126), 99 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-21 05:25:56,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:25:56,181 INFO L225 Difference]: With dead ends: 3991 [2023-12-21 05:25:56,182 INFO L226 Difference]: Without dead ends: 3921 [2023-12-21 05:25:56,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 36 SyntacticMatches, 18 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4148 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=4200, Invalid=24870, Unknown=0, NotChecked=0, Total=29070 [2023-12-21 05:25:56,183 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 982 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 05:25:56,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 2403 Invalid, 2298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 05:25:56,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3921 states. [2023-12-21 05:25:59,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3921 to 2451. [2023-12-21 05:25:59,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2451 states, 2450 states have (on average 1.0665306122448979) internal successors, (2613), 2450 states have internal predecessors, (2613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:59,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 2613 transitions. [2023-12-21 05:25:59,348 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 2613 transitions. Word has length 56 [2023-12-21 05:25:59,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:25:59,349 INFO L495 AbstractCegarLoop]: Abstraction has 2451 states and 2613 transitions. [2023-12-21 05:25:59,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 1.2727272727272727) internal successors, (126), 99 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:59,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 2613 transitions. [2023-12-21 05:25:59,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 05:25:59,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:25:59,351 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:25:59,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Ended with exit code 0 [2023-12-21 05:25:59,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,180 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:59,552 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:25:59,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:25:59,552 INFO L85 PathProgramCache]: Analyzing trace with hash -640653734, now seen corresponding path program 178 times [2023-12-21 05:25:59,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:25:59,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066596903] [2023-12-21 05:25:59,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:25:59,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:25:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:26:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:26:00,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:26:00,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066596903] [2023-12-21 05:26:00,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066596903] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:26:00,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642587933] [2023-12-21 05:26:00,321 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:26:00,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:00,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:26:00,322 INFO L229 MonitoredProcess]: Starting monitored process 181 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:26:00,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Waiting until timeout for monitored process [2023-12-21 05:26:00,399 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:26:00,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:26:00,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 05:26:00,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:26:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:26:01,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:26:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 19 proven. 342 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:26:03,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642587933] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:26:03,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:26:03,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 99 [2023-12-21 05:26:03,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555799829] [2023-12-21 05:26:03,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:26:03,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2023-12-21 05:26:03,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:26:03,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2023-12-21 05:26:03,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=9428, Unknown=0, NotChecked=0, Total=9702 [2023-12-21 05:26:03,105 INFO L87 Difference]: Start difference. First operand 2451 states and 2613 transitions. Second operand has 99 states, 99 states have (on average 1.2727272727272727) internal successors, (126), 99 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:12,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:26:12,674 INFO L93 Difference]: Finished difference Result 2530 states and 2702 transitions. [2023-12-21 05:26:12,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-21 05:26:12,675 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.2727272727272727) internal successors, (126), 99 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-21 05:26:12,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:26:12,677 INFO L225 Difference]: With dead ends: 2530 [2023-12-21 05:26:12,677 INFO L226 Difference]: Without dead ends: 2495 [2023-12-21 05:26:12,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 35 SyntacticMatches, 19 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3219 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1587, Invalid=21669, Unknown=0, NotChecked=0, Total=23256 [2023-12-21 05:26:12,678 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 1667 mSDsluCounter, 5144 mSDsCounter, 0 mSdLazyCounter, 5737 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1667 SdHoareTripleChecker+Valid, 5221 SdHoareTripleChecker+Invalid, 5941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 5737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 05:26:12,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1667 Valid, 5221 Invalid, 5941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 5737 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 05:26:12,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2023-12-21 05:26:15,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2461. [2023-12-21 05:26:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2461 states, 2460 states have (on average 1.066260162601626) internal successors, (2623), 2460 states have internal predecessors, (2623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:15,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 2623 transitions. [2023-12-21 05:26:15,843 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 2623 transitions. Word has length 56 [2023-12-21 05:26:15,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:26:15,843 INFO L495 AbstractCegarLoop]: Abstraction has 2461 states and 2623 transitions. [2023-12-21 05:26:15,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 1.2727272727272727) internal successors, (126), 99 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:15,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 2623 transitions. [2023-12-21 05:26:15,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 05:26:15,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:26:15,845 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:26:15,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Ended with exit code 0 [2023-12-21 05:26:16,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,181 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:16,049 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:26:16,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:26:16,050 INFO L85 PathProgramCache]: Analyzing trace with hash 984390862, now seen corresponding path program 179 times [2023-12-21 05:26:16,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:26:16,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772863392] [2023-12-21 05:26:16,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:26:16,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:26:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:26:16,249 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 05:26:16,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:26:16,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772863392] [2023-12-21 05:26:16,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772863392] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:26:16,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552546905] [2023-12-21 05:26:16,249 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:26:16,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:16,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:26:16,250 INFO L229 MonitoredProcess]: Starting monitored process 182 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:26:16,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Waiting until timeout for monitored process [2023-12-21 05:26:16,321 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-21 05:26:16,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:26:16,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 05:26:16,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:26:16,492 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 05:26:16,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:26:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 05:26:16,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552546905] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:26:16,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:26:16,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2023-12-21 05:26:16,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164511544] [2023-12-21 05:26:16,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:26:16,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 05:26:16,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:26:16,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 05:26:16,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=781, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 05:26:16,663 INFO L87 Difference]: Start difference. First operand 2461 states and 2623 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:20,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:26:20,392 INFO L93 Difference]: Finished difference Result 2737 states and 2934 transitions. [2023-12-21 05:26:20,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-21 05:26:20,393 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-21 05:26:20,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:26:20,395 INFO L225 Difference]: With dead ends: 2737 [2023-12-21 05:26:20,395 INFO L226 Difference]: Without dead ends: 2449 [2023-12-21 05:26:20,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 80 SyntacticMatches, 20 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2803 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2149, Invalid=4171, Unknown=0, NotChecked=0, Total=6320 [2023-12-21 05:26:20,395 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 119 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:26:20,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 265 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:26:20,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2449 states. [2023-12-21 05:26:23,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2449 to 2449. [2023-12-21 05:26:23,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2449 states, 2448 states have (on average 1.0649509803921569) internal successors, (2607), 2448 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:23,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 2607 transitions. [2023-12-21 05:26:23,484 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 2607 transitions. Word has length 56 [2023-12-21 05:26:23,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:26:23,484 INFO L495 AbstractCegarLoop]: Abstraction has 2449 states and 2607 transitions. [2023-12-21 05:26:23,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:23,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 2607 transitions. [2023-12-21 05:26:23,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 05:26:23,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:26:23,486 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:26:23,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Ended with exit code 0 [2023-12-21 05:26:23,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 182 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2023-12-21 05:26:23,691 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:26:23,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:26:23,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1766615575, now seen corresponding path program 180 times [2023-12-21 05:26:23,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:26:23,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641016293] [2023-12-21 05:26:23,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:26:23,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:26:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:26:23,907 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 05:26:23,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:26:23,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641016293] [2023-12-21 05:26:23,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641016293] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:26:23,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582379013] [2023-12-21 05:26:23,908 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:26:23,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:23,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:26:23,909 INFO L229 MonitoredProcess]: Starting monitored process 183 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:26:23,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Waiting until timeout for monitored process [2023-12-21 05:26:23,963 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-12-21 05:26:23,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:26:23,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 05:26:23,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:26:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 05:26:24,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:26:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 05:26:24,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582379013] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:26:24,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:26:24,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2023-12-21 05:26:24,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799771279] [2023-12-21 05:26:24,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:26:24,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 05:26:24,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:26:24,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 05:26:24,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=781, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 05:26:24,293 INFO L87 Difference]: Start difference. First operand 2449 states and 2607 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:28,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:26:28,468 INFO L93 Difference]: Finished difference Result 2508 states and 2666 transitions. [2023-12-21 05:26:28,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-21 05:26:28,469 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-21 05:26:28,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:26:28,471 INFO L225 Difference]: With dead ends: 2508 [2023-12-21 05:26:28,471 INFO L226 Difference]: Without dead ends: 2503 [2023-12-21 05:26:28,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 80 SyntacticMatches, 20 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2803 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2149, Invalid=4171, Unknown=0, NotChecked=0, Total=6320 [2023-12-21 05:26:28,472 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 140 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:26:28,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 385 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:26:28,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2023-12-21 05:26:31,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2450. [2023-12-21 05:26:31,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2450 states, 2449 states have (on average 1.064924458962842) internal successors, (2608), 2449 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:31,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 2608 transitions. [2023-12-21 05:26:31,632 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 2608 transitions. Word has length 56 [2023-12-21 05:26:31,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:26:31,632 INFO L495 AbstractCegarLoop]: Abstraction has 2450 states and 2608 transitions. [2023-12-21 05:26:31,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:31,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 2608 transitions. [2023-12-21 05:26:31,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 05:26:31,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:26:31,634 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:26:31,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Forceful destruction successful, exit code 0 [2023-12-21 05:26:31,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189,183 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:31,839 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:26:31,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:26:31,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1059295468, now seen corresponding path program 181 times [2023-12-21 05:26:31,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:26:31,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396027632] [2023-12-21 05:26:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:26:31,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:26:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:26:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 382 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:26:32,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:26:32,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396027632] [2023-12-21 05:26:32,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396027632] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:26:32,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649072061] [2023-12-21 05:26:32,768 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:26:32,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:32,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:26:32,769 INFO L229 MonitoredProcess]: Starting monitored process 184 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:26:32,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Waiting until timeout for monitored process [2023-12-21 05:26:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:26:32,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 102 conjunts are in the unsatisfiable core [2023-12-21 05:26:32,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:26:33,650 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 382 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:26:33,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:26:33,820 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 382 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 05:26:33,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649072061] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:26:33,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:26:33,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 74 [2023-12-21 05:26:33,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401634584] [2023-12-21 05:26:33,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:26:33,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-21 05:26:33,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:26:33,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-21 05:26:33,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=5226, Unknown=0, NotChecked=0, Total=5402 [2023-12-21 05:26:33,821 INFO L87 Difference]: Start difference. First operand 2450 states and 2608 transitions. Second operand has 74 states, 74 states have (on average 1.2297297297297298) internal successors, (91), 74 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:38,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:26:38,949 INFO L93 Difference]: Finished difference Result 2575 states and 2744 transitions. [2023-12-21 05:26:38,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-21 05:26:38,949 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.2297297297297298) internal successors, (91), 74 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-21 05:26:38,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:26:38,952 INFO L225 Difference]: With dead ends: 2575 [2023-12-21 05:26:38,952 INFO L226 Difference]: Without dead ends: 2567 [2023-12-21 05:26:38,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=281, Invalid=9225, Unknown=0, NotChecked=0, Total=9506 [2023-12-21 05:26:38,952 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 176 mSDsluCounter, 3969 mSDsCounter, 0 mSdLazyCounter, 5010 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 4039 SdHoareTripleChecker+Invalid, 5011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:26:38,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 4039 Invalid, 5011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5010 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 05:26:38,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2023-12-21 05:26:42,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2458. [2023-12-21 05:26:42,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2458 states, 2457 states have (on average 1.0651200651200652) internal successors, (2617), 2457 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:42,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2458 states to 2458 states and 2617 transitions. [2023-12-21 05:26:42,066 INFO L78 Accepts]: Start accepts. Automaton has 2458 states and 2617 transitions. Word has length 57 [2023-12-21 05:26:42,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:26:42,066 INFO L495 AbstractCegarLoop]: Abstraction has 2458 states and 2617 transitions. [2023-12-21 05:26:42,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.2297297297297298) internal successors, (91), 74 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:42,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2458 states and 2617 transitions. [2023-12-21 05:26:42,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 05:26:42,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:26:42,068 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:26:42,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Ended with exit code 0 [2023-12-21 05:26:42,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,184 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:42,272 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:26:42,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:26:42,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1885124944, now seen corresponding path program 182 times [2023-12-21 05:26:42,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:26:42,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022867677] [2023-12-21 05:26:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:26:42,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:26:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:26:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:26:43,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:26:43,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022867677] [2023-12-21 05:26:43,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022867677] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:26:43,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185845294] [2023-12-21 05:26:43,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:26:43,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:43,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:26:43,152 INFO L229 MonitoredProcess]: Starting monitored process 185 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:26:43,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Waiting until timeout for monitored process [2023-12-21 05:26:43,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:26:43,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:26:43,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 98 conjunts are in the unsatisfiable core [2023-12-21 05:26:43,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:26:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:26:44,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:26:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:26:44,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185845294] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:26:44,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:26:44,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 72 [2023-12-21 05:26:44,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464054258] [2023-12-21 05:26:44,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:26:44,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-12-21 05:26:44,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:26:44,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-12-21 05:26:44,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=4937, Unknown=0, NotChecked=0, Total=5112 [2023-12-21 05:26:44,190 INFO L87 Difference]: Start difference. First operand 2458 states and 2617 transitions. Second operand has 72 states, 72 states have (on average 1.25) internal successors, (90), 72 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:48,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:26:48,671 INFO L93 Difference]: Finished difference Result 2485 states and 2643 transitions. [2023-12-21 05:26:48,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 05:26:48,671 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.25) internal successors, (90), 72 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-21 05:26:48,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:26:48,674 INFO L225 Difference]: With dead ends: 2485 [2023-12-21 05:26:48,674 INFO L226 Difference]: Without dead ends: 2450 [2023-12-21 05:26:48,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1195 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=279, Invalid=8651, Unknown=0, NotChecked=0, Total=8930 [2023-12-21 05:26:48,674 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 150 mSDsluCounter, 3471 mSDsCounter, 0 mSdLazyCounter, 4308 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 3539 SdHoareTripleChecker+Invalid, 4309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 05:26:48,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 3539 Invalid, 4309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4308 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 05:26:48,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2023-12-21 05:26:51,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 2450. [2023-12-21 05:26:51,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2450 states, 2449 states have (on average 1.064924458962842) internal successors, (2608), 2449 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:51,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 2608 transitions. [2023-12-21 05:26:51,891 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 2608 transitions. Word has length 57 [2023-12-21 05:26:51,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:26:51,892 INFO L495 AbstractCegarLoop]: Abstraction has 2450 states and 2608 transitions. [2023-12-21 05:26:51,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.25) internal successors, (90), 72 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:51,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 2608 transitions. [2023-12-21 05:26:51,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 05:26:51,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:26:51,893 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:26:51,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Ended with exit code 0 [2023-12-21 05:26:52,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,185 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:52,098 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:26:52,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:26:52,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1880190188, now seen corresponding path program 183 times [2023-12-21 05:26:52,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:26:52,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419289858] [2023-12-21 05:26:52,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:26:52,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:26:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:26:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:26:52,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:26:52,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419289858] [2023-12-21 05:26:52,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419289858] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:26:52,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76380534] [2023-12-21 05:26:52,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:26:52,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:52,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:26:52,947 INFO L229 MonitoredProcess]: Starting monitored process 186 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:26:52,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Waiting until timeout for monitored process [2023-12-21 05:26:53,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-12-21 05:26:53,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:26:53,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 94 conjunts are in the unsatisfiable core [2023-12-21 05:26:53,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:26:53,749 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:26:53,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:26:53,859 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 05:26:53,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76380534] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:26:53,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:26:53,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 70 [2023-12-21 05:26:53,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723060681] [2023-12-21 05:26:53,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:26:53,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-21 05:26:53,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:26:53,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-21 05:26:53,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=4656, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 05:26:53,861 INFO L87 Difference]: Start difference. First operand 2450 states and 2608 transitions. Second operand has 70 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 70 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:58,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:26:58,336 INFO L93 Difference]: Finished difference Result 2476 states and 2633 transitions. [2023-12-21 05:26:58,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-21 05:26:58,336 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 70 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-21 05:26:58,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:26:58,339 INFO L225 Difference]: With dead ends: 2476 [2023-12-21 05:26:58,339 INFO L226 Difference]: Without dead ends: 2440 [2023-12-21 05:26:58,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=277, Invalid=8095, Unknown=0, NotChecked=0, Total=8372 [2023-12-21 05:26:58,339 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 135 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 4085 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 3234 SdHoareTripleChecker+Invalid, 4086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 05:26:58,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 3234 Invalid, 4086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4085 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 05:26:58,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2023-12-21 05:27:01,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2440. [2023-12-21 05:27:01,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2440 states, 2439 states have (on average 1.064780647806478) internal successors, (2597), 2439 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:01,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 2597 transitions. [2023-12-21 05:27:01,503 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 2597 transitions. Word has length 57 [2023-12-21 05:27:01,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:27:01,504 INFO L495 AbstractCegarLoop]: Abstraction has 2440 states and 2597 transitions. [2023-12-21 05:27:01,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 70 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:01,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 2597 transitions. [2023-12-21 05:27:01,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 05:27:01,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:27:01,506 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:27:01,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Ended with exit code 0 [2023-12-21 05:27:01,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,186 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:01,710 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:27:01,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:27:01,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1592627888, now seen corresponding path program 184 times [2023-12-21 05:27:01,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:27:01,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279627669] [2023-12-21 05:27:01,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:27:01,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:27:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:27:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:27:02,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:27:02,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279627669] [2023-12-21 05:27:02,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279627669] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:27:02,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688585464] [2023-12-21 05:27:02,475 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:27:02,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:02,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:27:02,476 INFO L229 MonitoredProcess]: Starting monitored process 187 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:27:02,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Waiting until timeout for monitored process [2023-12-21 05:27:02,532 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:27:02,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:27:02,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 90 conjunts are in the unsatisfiable core [2023-12-21 05:27:02,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:27:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:27:03,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:27:03,533 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 05:27:03,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688585464] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:27:03,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:27:03,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 68 [2023-12-21 05:27:03,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107300554] [2023-12-21 05:27:03,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:27:03,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-21 05:27:03,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:27:03,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-21 05:27:03,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=4383, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 05:27:03,535 INFO L87 Difference]: Start difference. First operand 2440 states and 2597 transitions. Second operand has 68 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 68 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:07,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:27:07,752 INFO L93 Difference]: Finished difference Result 2465 states and 2621 transitions. [2023-12-21 05:27:07,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-21 05:27:07,753 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 68 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-21 05:27:07,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:27:07,755 INFO L225 Difference]: With dead ends: 2465 [2023-12-21 05:27:07,755 INFO L226 Difference]: Without dead ends: 2428 [2023-12-21 05:27:07,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1094 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=275, Invalid=7557, Unknown=0, NotChecked=0, Total=7832 [2023-12-21 05:27:07,755 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 121 mSDsluCounter, 2558 mSDsCounter, 0 mSdLazyCounter, 3362 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 2614 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 05:27:07,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 2614 Invalid, 3363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3362 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 05:27:07,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2023-12-21 05:27:10,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 2428. [2023-12-21 05:27:10,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 2427 states have (on average 1.0646889163576432) internal successors, (2584), 2427 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:10,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 2584 transitions. [2023-12-21 05:27:10,842 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 2584 transitions. Word has length 57 [2023-12-21 05:27:10,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:27:10,842 INFO L495 AbstractCegarLoop]: Abstraction has 2428 states and 2584 transitions. [2023-12-21 05:27:10,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 68 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:10,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 2584 transitions. [2023-12-21 05:27:10,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 05:27:10,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:27:10,844 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:27:10,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Ended with exit code 0 [2023-12-21 05:27:11,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,187 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:11,048 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:27:11,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:27:11,049 INFO L85 PathProgramCache]: Analyzing trace with hash -320329492, now seen corresponding path program 185 times [2023-12-21 05:27:11,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:27:11,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635534479] [2023-12-21 05:27:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:27:11,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:27:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:27:11,685 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:27:11,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:27:11,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635534479] [2023-12-21 05:27:11,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635534479] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:27:11,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341900277] [2023-12-21 05:27:11,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:27:11,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:11,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:27:11,690 INFO L229 MonitoredProcess]: Starting monitored process 188 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:27:11,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Waiting until timeout for monitored process [2023-12-21 05:27:11,752 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-12-21 05:27:11,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:27:11,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 86 conjunts are in the unsatisfiable core [2023-12-21 05:27:11,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:27:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:27:12,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:27:12,673 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 05:27:12,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341900277] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:27:12,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:27:12,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 66 [2023-12-21 05:27:12,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230955830] [2023-12-21 05:27:12,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:27:12,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-21 05:27:12,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:27:12,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-21 05:27:12,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=4118, Unknown=0, NotChecked=0, Total=4290 [2023-12-21 05:27:12,674 INFO L87 Difference]: Start difference. First operand 2428 states and 2584 transitions. Second operand has 66 states, 66 states have (on average 1.2727272727272727) internal successors, (84), 66 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:16,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:27:16,810 INFO L93 Difference]: Finished difference Result 2452 states and 2607 transitions. [2023-12-21 05:27:16,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 05:27:16,811 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.2727272727272727) internal successors, (84), 66 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-21 05:27:16,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:27:16,813 INFO L225 Difference]: With dead ends: 2452 [2023-12-21 05:27:16,813 INFO L226 Difference]: Without dead ends: 2414 [2023-12-21 05:27:16,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=273, Invalid=7037, Unknown=0, NotChecked=0, Total=7310 [2023-12-21 05:27:16,840 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 105 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 3028 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 3029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 05:27:16,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 2232 Invalid, 3029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3028 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 05:27:16,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2023-12-21 05:27:19,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 2414. [2023-12-21 05:27:19,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2414 states, 2413 states have (on average 1.0646498135101534) internal successors, (2569), 2413 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 2569 transitions. [2023-12-21 05:27:19,907 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 2569 transitions. Word has length 57 [2023-12-21 05:27:19,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:27:19,908 INFO L495 AbstractCegarLoop]: Abstraction has 2414 states and 2569 transitions. [2023-12-21 05:27:19,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.2727272727272727) internal successors, (84), 66 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:19,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 2569 transitions. [2023-12-21 05:27:19,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 05:27:19,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:27:19,909 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:27:19,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Ended with exit code 0 [2023-12-21 05:27:20,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2023-12-21 05:27:20,114 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:27:20,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:27:20,114 INFO L85 PathProgramCache]: Analyzing trace with hash -37797552, now seen corresponding path program 186 times [2023-12-21 05:27:20,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:27:20,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627113050] [2023-12-21 05:27:20,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:27:20,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:27:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:27:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:27:20,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:27:20,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627113050] [2023-12-21 05:27:20,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627113050] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:27:20,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103698838] [2023-12-21 05:27:20,749 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:27:20,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:20,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:27:20,753 INFO L229 MonitoredProcess]: Starting monitored process 189 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:27:20,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Waiting until timeout for monitored process [2023-12-21 05:27:20,810 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-12-21 05:27:20,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:27:20,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-21 05:27:20,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:27:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:27:21,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:27:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 05:27:21,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103698838] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:27:21,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:27:21,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 64 [2023-12-21 05:27:21,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347802061] [2023-12-21 05:27:21,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:27:21,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-21 05:27:21,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:27:21,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-21 05:27:21,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=3861, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 05:27:21,697 INFO L87 Difference]: Start difference. First operand 2414 states and 2569 transitions. Second operand has 64 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:25,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:27:25,786 INFO L93 Difference]: Finished difference Result 2437 states and 2591 transitions. [2023-12-21 05:27:25,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 05:27:25,787 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-21 05:27:25,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:27:25,789 INFO L225 Difference]: With dead ends: 2437 [2023-12-21 05:27:25,789 INFO L226 Difference]: Without dead ends: 2398 [2023-12-21 05:27:25,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=271, Invalid=6535, Unknown=0, NotChecked=0, Total=6806 [2023-12-21 05:27:25,789 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 86 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 2701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 05:27:25,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1920 Invalid, 2701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 05:27:25,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2023-12-21 05:27:28,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2398. [2023-12-21 05:27:28,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2397 states have (on average 1.0646641635377556) internal successors, (2552), 2397 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:28,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 2552 transitions. [2023-12-21 05:27:28,825 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 2552 transitions. Word has length 57 [2023-12-21 05:27:28,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:27:28,825 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 2552 transitions. [2023-12-21 05:27:28,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:28,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 2552 transitions. [2023-12-21 05:27:28,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 05:27:28,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:27:28,827 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:27:28,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Forceful destruction successful, exit code 0 [2023-12-21 05:27:29,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,189 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:29,031 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:27:29,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:27:29,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1499972844, now seen corresponding path program 187 times [2023-12-21 05:27:29,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:27:29,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614682429] [2023-12-21 05:27:29,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:27:29,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:27:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:27:29,550 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:27:29,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:27:29,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614682429] [2023-12-21 05:27:29,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614682429] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:27:29,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536376092] [2023-12-21 05:27:29,550 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:27:29,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:29,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:27:29,551 INFO L229 MonitoredProcess]: Starting monitored process 190 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:27:29,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Waiting until timeout for monitored process [2023-12-21 05:27:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:27:29,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-21 05:27:29,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:27:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:27:30,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:27:30,451 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 05:27:30,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536376092] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:27:30,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:27:30,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 62 [2023-12-21 05:27:30,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406752101] [2023-12-21 05:27:30,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:27:30,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-21 05:27:30,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:27:30,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-21 05:27:30,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3612, Unknown=0, NotChecked=0, Total=3782 [2023-12-21 05:27:30,452 INFO L87 Difference]: Start difference. First operand 2398 states and 2552 transitions. Second operand has 62 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 62 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:34,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:27:34,316 INFO L93 Difference]: Finished difference Result 2420 states and 2573 transitions. [2023-12-21 05:27:34,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 05:27:34,316 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 62 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-21 05:27:34,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:27:34,318 INFO L225 Difference]: With dead ends: 2420 [2023-12-21 05:27:34,318 INFO L226 Difference]: Without dead ends: 2380 [2023-12-21 05:27:34,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=269, Invalid=6051, Unknown=0, NotChecked=0, Total=6320 [2023-12-21 05:27:34,319 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 71 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 05:27:34,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1560 Invalid, 2282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2281 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 05:27:34,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2023-12-21 05:27:37,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2380. [2023-12-21 05:27:37,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2379 states have (on average 1.0647330811265237) internal successors, (2533), 2379 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:37,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 2533 transitions. [2023-12-21 05:27:37,339 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 2533 transitions. Word has length 57 [2023-12-21 05:27:37,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:27:37,339 INFO L495 AbstractCegarLoop]: Abstraction has 2380 states and 2533 transitions. [2023-12-21 05:27:37,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 62 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:37,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 2533 transitions. [2023-12-21 05:27:37,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 05:27:37,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:27:37,341 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:27:37,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Ended with exit code 0 [2023-12-21 05:27:37,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,190 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:37,546 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:27:37,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:27:37,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1000551760, now seen corresponding path program 188 times [2023-12-21 05:27:37,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:27:37,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585501231] [2023-12-21 05:27:37,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:27:37,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:27:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:27:38,088 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 05:27:38,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:27:38,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585501231] [2023-12-21 05:27:38,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585501231] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:27:38,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860703861] [2023-12-21 05:27:38,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:27:38,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:38,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:27:38,089 INFO L229 MonitoredProcess]: Starting monitored process 191 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:27:38,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Waiting until timeout for monitored process [2023-12-21 05:27:38,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:27:38,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:27:38,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-21 05:27:38,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:27:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 05:27:38,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:27:38,867 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 05:27:38,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860703861] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:27:38,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:27:38,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 60 [2023-12-21 05:27:38,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827182142] [2023-12-21 05:27:38,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:27:38,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-21 05:27:38,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:27:38,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-21 05:27:38,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=3371, Unknown=0, NotChecked=0, Total=3540 [2023-12-21 05:27:38,869 INFO L87 Difference]: Start difference. First operand 2380 states and 2533 transitions. Second operand has 60 states, 60 states have (on average 1.3) internal successors, (78), 60 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:42,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:27:42,686 INFO L93 Difference]: Finished difference Result 2401 states and 2553 transitions. [2023-12-21 05:27:42,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 05:27:42,686 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.3) internal successors, (78), 60 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-21 05:27:42,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:27:42,688 INFO L225 Difference]: With dead ends: 2401 [2023-12-21 05:27:42,688 INFO L226 Difference]: Without dead ends: 2360 [2023-12-21 05:27:42,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=267, Invalid=5585, Unknown=0, NotChecked=0, Total=5852 [2023-12-21 05:27:42,689 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 56 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 05:27:42,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1240 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 05:27:42,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2023-12-21 05:27:45,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 2360. [2023-12-21 05:27:45,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 2359 states have (on average 1.0648579906740143) internal successors, (2512), 2359 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 2512 transitions. [2023-12-21 05:27:45,702 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 2512 transitions. Word has length 57 [2023-12-21 05:27:45,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:27:45,702 INFO L495 AbstractCegarLoop]: Abstraction has 2360 states and 2512 transitions. [2023-12-21 05:27:45,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.3) internal successors, (78), 60 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:45,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 2512 transitions. [2023-12-21 05:27:45,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 05:27:45,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:27:45,704 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:27:45,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Forceful destruction successful, exit code 0 [2023-12-21 05:27:45,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,191 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:45,909 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:27:45,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:27:45,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1487912724, now seen corresponding path program 189 times [2023-12-21 05:27:45,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:27:45,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215000998] [2023-12-21 05:27:45,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:27:45,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:27:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:27:46,338 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-21 05:27:46,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:27:46,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215000998] [2023-12-21 05:27:46,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215000998] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:27:46,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086093334] [2023-12-21 05:27:46,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:27:46,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:46,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:27:46,341 INFO L229 MonitoredProcess]: Starting monitored process 192 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:27:46,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Waiting until timeout for monitored process [2023-12-21 05:27:46,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-21 05:27:46,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:27:46,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-21 05:27:46,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:27:46,999 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-21 05:27:47,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:27:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-21 05:27:47,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086093334] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:27:47,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:27:47,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 58 [2023-12-21 05:27:47,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373100316] [2023-12-21 05:27:47,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:27:47,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-21 05:27:47,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:27:47,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-21 05:27:47,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=3138, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 05:27:47,122 INFO L87 Difference]: Start difference. First operand 2360 states and 2512 transitions. Second operand has 58 states, 58 states have (on average 1.3103448275862069) internal successors, (76), 58 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:50,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:27:50,881 INFO L93 Difference]: Finished difference Result 2380 states and 2531 transitions. [2023-12-21 05:27:50,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 05:27:50,882 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.3103448275862069) internal successors, (76), 58 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-21 05:27:50,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:27:50,884 INFO L225 Difference]: With dead ends: 2380 [2023-12-21 05:27:50,884 INFO L226 Difference]: Without dead ends: 2338 [2023-12-21 05:27:50,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=265, Invalid=5137, Unknown=0, NotChecked=0, Total=5402 [2023-12-21 05:27:50,885 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 38 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:27:50,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 899 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:27:50,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2023-12-21 05:27:53,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 2338. [2023-12-21 05:27:53,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 2337 states have (on average 1.065040650406504) internal successors, (2489), 2337 states have internal predecessors, (2489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:53,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 2489 transitions. [2023-12-21 05:27:53,948 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 2489 transitions. Word has length 57 [2023-12-21 05:27:53,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:27:53,948 INFO L495 AbstractCegarLoop]: Abstraction has 2338 states and 2489 transitions. [2023-12-21 05:27:53,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.3103448275862069) internal successors, (76), 58 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:53,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 2489 transitions. [2023-12-21 05:27:53,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 05:27:53,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:27:53,950 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:27:53,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Forceful destruction successful, exit code 0 [2023-12-21 05:27:54,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,192 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:54,155 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:27:54,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:27:54,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1040299696, now seen corresponding path program 190 times [2023-12-21 05:27:54,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:27:54,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057777737] [2023-12-21 05:27:54,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:27:54,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:27:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:27:54,593 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-21 05:27:54,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:27:54,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057777737] [2023-12-21 05:27:54,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057777737] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:27:54,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264264035] [2023-12-21 05:27:54,594 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:27:54,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:54,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:27:54,595 INFO L229 MonitoredProcess]: Starting monitored process 193 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:27:54,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Waiting until timeout for monitored process [2023-12-21 05:27:54,649 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:27:54,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:27:54,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-21 05:27:54,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:27:55,280 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-21 05:27:55,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:27:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-21 05:27:55,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264264035] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:27:55,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:27:55,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 57 [2023-12-21 05:27:55,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075779903] [2023-12-21 05:27:55,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:27:55,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-21 05:27:55,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:27:55,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-21 05:27:55,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3020, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 05:27:55,418 INFO L87 Difference]: Start difference. First operand 2338 states and 2489 transitions. Second operand has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:59,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:27:59,021 INFO L93 Difference]: Finished difference Result 2372 states and 2526 transitions. [2023-12-21 05:27:59,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 05:27:59,021 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-21 05:27:59,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:27:59,023 INFO L225 Difference]: With dead ends: 2372 [2023-12-21 05:27:59,023 INFO L226 Difference]: Without dead ends: 2367 [2023-12-21 05:27:59,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=269, Invalid=4843, Unknown=0, NotChecked=0, Total=5112 [2023-12-21 05:27:59,024 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:27:59,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 554 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:27:59,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2023-12-21 05:28:02,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2355. [2023-12-21 05:28:02,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2354 states have (on average 1.0654205607476634) internal successors, (2508), 2354 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:02,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 2508 transitions. [2023-12-21 05:28:02,014 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 2508 transitions. Word has length 57 [2023-12-21 05:28:02,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:28:02,014 INFO L495 AbstractCegarLoop]: Abstraction has 2355 states and 2508 transitions. [2023-12-21 05:28:02,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:02,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 2508 transitions. [2023-12-21 05:28:02,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 05:28:02,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:28:02,016 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:28:02,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Ended with exit code 0 [2023-12-21 05:28:02,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2023-12-21 05:28:02,221 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:28:02,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:28:02,221 INFO L85 PathProgramCache]: Analyzing trace with hash -2076854118, now seen corresponding path program 191 times [2023-12-21 05:28:02,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:28:02,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056689337] [2023-12-21 05:28:02,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:28:02,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:28:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:28:03,148 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 20 proven. 380 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:28:03,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:28:03,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056689337] [2023-12-21 05:28:03,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056689337] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:28:03,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559135967] [2023-12-21 05:28:03,148 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:28:03,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:28:03,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:28:03,149 INFO L229 MonitoredProcess]: Starting monitored process 194 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:28:03,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Waiting until timeout for monitored process [2023-12-21 05:28:03,204 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-12-21 05:28:03,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:28:03,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 05:28:03,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:28:05,226 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 20 proven. 380 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:28:05,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:28:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 20 proven. 380 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:28:07,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559135967] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:28:07,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:28:07,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 104 [2023-12-21 05:28:07,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351246836] [2023-12-21 05:28:07,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:28:07,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2023-12-21 05:28:07,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:28:07,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2023-12-21 05:28:07,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=10423, Unknown=0, NotChecked=0, Total=10712 [2023-12-21 05:28:07,134 INFO L87 Difference]: Start difference. First operand 2355 states and 2508 transitions. Second operand has 104 states, 104 states have (on average 1.2596153846153846) internal successors, (131), 104 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:22,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:28:22,609 INFO L93 Difference]: Finished difference Result 4162 states and 4363 transitions. [2023-12-21 05:28:22,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-21 05:28:22,610 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.2596153846153846) internal successors, (131), 104 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-21 05:28:22,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:28:22,613 INFO L225 Difference]: With dead ends: 4162 [2023-12-21 05:28:22,613 INFO L226 Difference]: Without dead ends: 4090 [2023-12-21 05:28:22,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 36 SyntacticMatches, 19 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4595 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=4641, Invalid=27579, Unknown=0, NotChecked=0, Total=32220 [2023-12-21 05:28:22,615 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 1213 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 2478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 05:28:22,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 2563 Invalid, 2478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 05:28:22,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4090 states. [2023-12-21 05:28:25,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4090 to 2510. [2023-12-21 05:28:25,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2510 states, 2509 states have (on average 1.0653646871263451) internal successors, (2673), 2509 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:25,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2510 states to 2510 states and 2673 transitions. [2023-12-21 05:28:25,921 INFO L78 Accepts]: Start accepts. Automaton has 2510 states and 2673 transitions. Word has length 58 [2023-12-21 05:28:25,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:28:25,921 INFO L495 AbstractCegarLoop]: Abstraction has 2510 states and 2673 transitions. [2023-12-21 05:28:25,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.2596153846153846) internal successors, (131), 104 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:25,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2510 states and 2673 transitions. [2023-12-21 05:28:25,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 05:28:25,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:28:25,923 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:28:25,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Forceful destruction successful, exit code 0 [2023-12-21 05:28:26,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 194 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2023-12-21 05:28:26,128 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:28:26,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:28:26,129 INFO L85 PathProgramCache]: Analyzing trace with hash 524996365, now seen corresponding path program 192 times [2023-12-21 05:28:26,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:28:26,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006179739] [2023-12-21 05:28:26,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:28:26,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:28:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:28:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:28:27,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:28:27,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006179739] [2023-12-21 05:28:27,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006179739] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:28:27,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230480038] [2023-12-21 05:28:27,067 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:28:27,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:28:27,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:28:27,068 INFO L229 MonitoredProcess]: Starting monitored process 195 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:28:27,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Waiting until timeout for monitored process [2023-12-21 05:28:27,144 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-12-21 05:28:27,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:28:27,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 05:28:27,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:28:28,906 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:28:28,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:28:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 20 proven. 380 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 05:28:30,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230480038] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:28:30,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:28:30,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 104 [2023-12-21 05:28:30,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226716821] [2023-12-21 05:28:30,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:28:30,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2023-12-21 05:28:30,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:28:30,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2023-12-21 05:28:30,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=10424, Unknown=0, NotChecked=0, Total=10712 [2023-12-21 05:28:30,753 INFO L87 Difference]: Start difference. First operand 2510 states and 2673 transitions. Second operand has 104 states, 104 states have (on average 1.2596153846153846) internal successors, (131), 104 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:41,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:28:41,779 INFO L93 Difference]: Finished difference Result 2591 states and 2764 transitions. [2023-12-21 05:28:41,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-21 05:28:41,780 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.2596153846153846) internal successors, (131), 104 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-21 05:28:41,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:28:41,782 INFO L225 Difference]: With dead ends: 2591 [2023-12-21 05:28:41,782 INFO L226 Difference]: Without dead ends: 2555 [2023-12-21 05:28:41,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 35 SyntacticMatches, 20 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3578 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=1731, Invalid=24029, Unknown=0, NotChecked=0, Total=25760 [2023-12-21 05:28:41,783 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1993 mSDsluCounter, 5389 mSDsCounter, 0 mSdLazyCounter, 6011 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 6237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 6011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:28:41,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1993 Valid, 5469 Invalid, 6237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 6011 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 05:28:41,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2023-12-21 05:28:45,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 2520. [2023-12-21 05:28:45,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2520 states, 2519 states have (on average 1.0651052004763795) internal successors, (2683), 2519 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:45,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2520 states to 2520 states and 2683 transitions. [2023-12-21 05:28:45,100 INFO L78 Accepts]: Start accepts. Automaton has 2520 states and 2683 transitions. Word has length 58 [2023-12-21 05:28:45,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:28:45,100 INFO L495 AbstractCegarLoop]: Abstraction has 2520 states and 2683 transitions. [2023-12-21 05:28:45,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.2596153846153846) internal successors, (131), 104 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:45,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2520 states and 2683 transitions. [2023-12-21 05:28:45,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 05:28:45,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:28:45,102 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:28:45,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Forceful destruction successful, exit code 0 [2023-12-21 05:28:45,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2023-12-21 05:28:45,307 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:28:45,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:28:45,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2139640119, now seen corresponding path program 193 times [2023-12-21 05:28:45,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:28:45,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732316646] [2023-12-21 05:28:45,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:28:45,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:28:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:28:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 56 proven. 65 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 05:28:45,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:28:45,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732316646] [2023-12-21 05:28:45,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732316646] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:28:45,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763757137] [2023-12-21 05:28:45,525 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:28:45,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:28:45,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:28:45,526 INFO L229 MonitoredProcess]: Starting monitored process 196 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:28:45,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Waiting until timeout for monitored process [2023-12-21 05:28:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:28:45,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-21 05:28:45,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:28:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 05:28:45,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:28:45,909 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 05:28:45,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763757137] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:28:45,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:28:45,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 37 [2023-12-21 05:28:45,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390900539] [2023-12-21 05:28:45,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:28:45,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-21 05:28:45,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:28:45,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-21 05:28:45,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 05:28:45,911 INFO L87 Difference]: Start difference. First operand 2520 states and 2683 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 37 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:50,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:28:50,618 INFO L93 Difference]: Finished difference Result 2668 states and 2854 transitions. [2023-12-21 05:28:50,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-21 05:28:50,619 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 37 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-21 05:28:50,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:28:50,621 INFO L225 Difference]: With dead ends: 2668 [2023-12-21 05:28:50,621 INFO L226 Difference]: Without dead ends: 2648 [2023-12-21 05:28:50,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 83 SyntacticMatches, 20 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2263 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1842, Invalid=6348, Unknown=0, NotChecked=0, Total=8190 [2023-12-21 05:28:50,621 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 149 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:28:50,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 235 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:28:50,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2023-12-21 05:28:54,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 2584. [2023-12-21 05:28:54,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 2583 states have (on average 1.0716221447928764) internal successors, (2768), 2583 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:54,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 2768 transitions. [2023-12-21 05:28:54,060 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 2768 transitions. Word has length 58 [2023-12-21 05:28:54,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:28:54,060 INFO L495 AbstractCegarLoop]: Abstraction has 2584 states and 2768 transitions. [2023-12-21 05:28:54,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 37 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:54,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 2768 transitions. [2023-12-21 05:28:54,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 05:28:54,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:28:54,062 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:28:54,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Forceful destruction successful, exit code 0 [2023-12-21 05:28:54,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2023-12-21 05:28:54,267 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:28:54,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:28:54,267 INFO L85 PathProgramCache]: Analyzing trace with hash 618802446, now seen corresponding path program 194 times [2023-12-21 05:28:54,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:28:54,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581089776] [2023-12-21 05:28:54,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:28:54,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:28:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:28:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 56 proven. 65 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 05:28:54,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:28:54,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581089776] [2023-12-21 05:28:54,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581089776] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:28:54,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795807342] [2023-12-21 05:28:54,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:28:54,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:28:54,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:28:54,497 INFO L229 MonitoredProcess]: Starting monitored process 197 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 05:28:54,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Waiting until timeout for monitored process [2023-12-21 05:28:54,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:28:54,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:28:54,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-21 05:28:54,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:28:54,747 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 05:28:54,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:28:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 05:28:54,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795807342] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:28:54,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:28:54,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 37 [2023-12-21 05:28:54,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119531192] [2023-12-21 05:28:54,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:28:54,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-21 05:28:54,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:28:54,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-21 05:28:54,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 05:28:54,902 INFO L87 Difference]: Start difference. First operand 2584 states and 2768 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 37 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-21 05:28:57,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-21 05:28:57,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 83 SyntacticMatches, 20 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2263 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1842, Invalid=6348, Unknown=0, NotChecked=0, Total=8190 [2023-12-21 05:28:57,050 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 159 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:28:57,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 215 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:28:57,050 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 05:28:57,052 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 05:28:57,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Ended with exit code 0 [2023-12-21 05:28:57,064 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 05:28:57,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203,197 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:28:57,256 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (2584states) and FLOYD_HOARE automaton (currently 79 states, 37 states before enhancement),while ReachableStatesComputation was computing reachable states (1151 states constructed, input type IntersectNwa). [2023-12-21 05:28:57,259 INFO L445 BasicCegarLoop]: Path program histogram: [194, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:28:57,260 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 05:28:57,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 05:28:57 BoogieIcfgContainer [2023-12-21 05:28:57,261 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 05:28:57,261 INFO L158 Benchmark]: Toolchain (without parser) took 883225.37ms. Allocated memory was 244.3MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 199.8MB in the beginning and 469.4MB in the end (delta: -269.6MB). Peak memory consumption was 951.7MB. Max. memory is 8.0GB. [2023-12-21 05:28:57,261 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 189.8MB. Free memory is still 139.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 05:28:57,261 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.88ms. Allocated memory is still 244.3MB. Free memory was 199.6MB in the beginning and 188.3MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 05:28:57,262 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.46ms. Allocated memory is still 244.3MB. Free memory was 188.3MB in the beginning and 186.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 05:28:57,262 INFO L158 Benchmark]: Boogie Preprocessor took 35.60ms. Allocated memory is still 244.3MB. Free memory was 186.6MB in the beginning and 184.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 05:28:57,262 INFO L158 Benchmark]: RCFGBuilder took 248.86ms. Allocated memory is still 244.3MB. Free memory was 184.5MB in the beginning and 170.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-21 05:28:57,276 INFO L158 Benchmark]: TraceAbstraction took 882731.62ms. Allocated memory was 244.3MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 170.2MB in the beginning and 469.4MB in the end (delta: -299.2MB). Peak memory consumption was 922.4MB. Max. memory is 8.0GB. [2023-12-21 05:28:57,276 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 189.8MB. Free memory is still 139.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 176.88ms. Allocated memory is still 244.3MB. Free memory was 199.6MB in the beginning and 188.3MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.46ms. Allocated memory is still 244.3MB. Free memory was 188.3MB in the beginning and 186.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.60ms. Allocated memory is still 244.3MB. Free memory was 186.6MB in the beginning and 184.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 248.86ms. Allocated memory is still 244.3MB. Free memory was 184.5MB in the beginning and 170.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 882731.62ms. Allocated memory was 244.3MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 170.2MB in the beginning and 469.4MB in the end (delta: -299.2MB). Peak memory consumption was 922.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 7]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 7). Cancelled while NwaCegarLoop was constructing difference of abstraction (2584states) and FLOYD_HOARE automaton (currently 79 states, 37 states before enhancement),while ReachableStatesComputation was computing reachable states (1151 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 882.7s, OverallIterations: 204, TraceHistogramMax: 20, PathProgramHistogramMax: 194, EmptinessCheckTime: 0.2s, AutomataDifference: 421.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40900 SdHoareTripleChecker+Valid, 71.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40900 mSDsluCounter, 224150 SdHoareTripleChecker+Invalid, 60.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 217221 mSDsCounter, 3329 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 260801 IncrementalHoareTripleChecker+Invalid, 264130 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3329 mSolverCounterUnsat, 6929 mSDtfsCounter, 260801 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24860 GetRequests, 11583 SyntacticMatches, 934 SemanticMatches, 12343 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159612 ImplicationChecksByTransitivity, 256.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2584occurred in iteration=203, InterpolantAutomatonStates: 6335, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 208.6s AutomataMinimizationTime, 203 MinimizatonAttempts, 12185 StatesRemovedByMinimization, 123 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.7s SsaConstructionTime, 6.0s SatisfiabilityAnalysisTime, 198.6s InterpolantComputationTime, 16628 NumberOfCodeBlocks, 16628 NumberOfCodeBlocksAsserted, 885 NumberOfCheckSat, 24246 ConstructedInterpolants, 0 QuantifiedInterpolants, 121668 SizeOfPredicates, 1354 NumberOfNonLiveVariables, 48120 ConjunctsInSsa, 8816 ConjunctsInUnsatCore, 594 InterpolantComputations, 10 PerfectInterpolantSequences, 19436/71860 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown