/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/watermelon.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 05:16:47,166 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 05:16:47,233 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 05:16:47,238 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 05:16:47,238 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 05:16:47,260 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 05:16:47,260 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 05:16:47,260 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 05:16:47,261 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 05:16:47,263 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 05:16:47,264 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 05:16:47,264 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 05:16:47,264 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 05:16:47,265 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 05:16:47,265 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 05:16:47,265 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 05:16:47,265 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 05:16:47,266 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 05:16:47,266 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 05:16:47,267 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 05:16:47,267 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 05:16:47,267 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 05:16:47,267 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 05:16:47,267 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 05:16:47,267 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 05:16:47,268 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 05:16:47,268 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 05:16:47,268 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 05:16:47,268 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 05:16:47,268 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 05:16:47,269 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 05:16:47,269 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 05:16:47,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 05:16:47,270 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 05:16:47,270 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 05:16:47,270 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 05:16:47,270 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 05:16:47,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 05:16:47,270 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 05:16:47,270 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 05:16:47,270 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 05:16:47,271 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 05:16:47,271 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 05:16:47,271 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 05:16:47,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 05:16:47,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 05:16:47,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 05:16:47,466 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 05:16:47,467 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 05:16:47,468 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/watermelon.c [2023-12-21 05:16:48,506 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 05:16:48,642 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 05:16:48,642 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/watermelon.c [2023-12-21 05:16:48,647 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f55959c3b/dc461bb00f8e4783bb8eca94e2ef47c6/FLAG65ae92a4f [2023-12-21 05:16:48,658 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f55959c3b/dc461bb00f8e4783bb8eca94e2ef47c6 [2023-12-21 05:16:48,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 05:16:48,660 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 05:16:48,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 05:16:48,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 05:16:48,665 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 05:16:48,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:16:48" (1/1) ... [2023-12-21 05:16:48,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@737a0b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:16:48, skipping insertion in model container [2023-12-21 05:16:48,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:16:48" (1/1) ... [2023-12-21 05:16:48,679 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 05:16:48,790 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/watermelon.c[373,386] [2023-12-21 05:16:48,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 05:16:48,815 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 05:16:48,824 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/watermelon.c[373,386] [2023-12-21 05:16:48,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 05:16:48,846 INFO L206 MainTranslator]: Completed translation [2023-12-21 05:16:48,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:16:48 WrapperNode [2023-12-21 05:16:48,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 05:16:48,848 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 05:16:48,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 05:16:48,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 05:16:48,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:16:48" (1/1) ... [2023-12-21 05:16:48,857 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:16:48" (1/1) ... [2023-12-21 05:16:48,872 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2023-12-21 05:16:48,873 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 05:16:48,873 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 05:16:48,873 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 05:16:48,873 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 05:16:48,880 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:16:48" (1/1) ... [2023-12-21 05:16:48,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:16:48" (1/1) ... [2023-12-21 05:16:48,887 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:16:48" (1/1) ... [2023-12-21 05:16:48,897 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 05:16:48,898 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:16:48" (1/1) ... [2023-12-21 05:16:48,898 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:16:48" (1/1) ... [2023-12-21 05:16:48,907 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:16:48" (1/1) ... [2023-12-21 05:16:48,909 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:16:48" (1/1) ... [2023-12-21 05:16:48,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:16:48" (1/1) ... [2023-12-21 05:16:48,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:16:48" (1/1) ... [2023-12-21 05:16:48,913 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 05:16:48,914 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 05:16:48,914 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 05:16:48,915 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 05:16:48,915 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:16:48" (1/1) ... [2023-12-21 05:16:48,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 05:16:48,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:48,941 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 05:16:48,961 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 05:16:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 05:16:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 05:16:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 05:16:48,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 05:16:49,013 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 05:16:49,015 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 05:16:49,149 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 05:16:49,189 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 05:16:49,189 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 05:16:49,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:16:49 BoogieIcfgContainer [2023-12-21 05:16:49,189 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 05:16:49,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 05:16:49,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 05:16:49,193 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 05:16:49,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 05:16:48" (1/3) ... [2023-12-21 05:16:49,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ec6906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:16:49, skipping insertion in model container [2023-12-21 05:16:49,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:16:48" (2/3) ... [2023-12-21 05:16:49,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ec6906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:16:49, skipping insertion in model container [2023-12-21 05:16:49,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:16:49" (3/3) ... [2023-12-21 05:16:49,195 INFO L112 eAbstractionObserver]: Analyzing ICFG watermelon.c [2023-12-21 05:16:49,209 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 05:16:49,209 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 05:16:49,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 05:16:49,261 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;@6de8be1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 05:16:49,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 05:16:49,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.6875) internal successors, (27), 17 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 05:16:49,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-21 05:16:49,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:49,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:49,269 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:49,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:49,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1564077685, now seen corresponding path program 1 times [2023-12-21 05:16:49,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:49,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834264389] [2023-12-21 05:16:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:49,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:49,555 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 05:16:49,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:49,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834264389] [2023-12-21 05:16:49,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834264389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:16:49,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:16:49,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 05:16:49,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472104016] [2023-12-21 05:16:49,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:16:49,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 05:16:49,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:49,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 05:16:49,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 05:16:49,592 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.6875) internal successors, (27), 17 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) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:49,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:49,681 INFO L93 Difference]: Finished difference Result 47 states and 67 transitions. [2023-12-21 05:16:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 05:16:49,683 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-12-21 05:16:49,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:49,687 INFO L225 Difference]: With dead ends: 47 [2023-12-21 05:16:49,687 INFO L226 Difference]: Without dead ends: 25 [2023-12-21 05:16:49,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 05:16:49,691 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 69 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 05:16:49,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 69 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:16:49,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-21 05:16:49,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2023-12-21 05:16:49,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 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 05:16:49,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2023-12-21 05:16:49,712 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 8 [2023-12-21 05:16:49,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:49,713 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-12-21 05:16:49,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:49,713 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2023-12-21 05:16:49,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-21 05:16:49,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:49,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:49,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 05:16:49,715 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:49,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:49,715 INFO L85 PathProgramCache]: Analyzing trace with hash -97791536, now seen corresponding path program 1 times [2023-12-21 05:16:49,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:49,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887341162] [2023-12-21 05:16:49,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:49,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:49,803 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 05:16:49,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:49,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887341162] [2023-12-21 05:16:49,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887341162] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:16:49,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:16:49,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 05:16:49,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614821889] [2023-12-21 05:16:49,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:16:49,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 05:16:49,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:49,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 05:16:49,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 05:16:49,811 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:49,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:49,832 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2023-12-21 05:16:49,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 05:16:49,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2023-12-21 05:16:49,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:49,834 INFO L225 Difference]: With dead ends: 29 [2023-12-21 05:16:49,834 INFO L226 Difference]: Without dead ends: 22 [2023-12-21 05:16:49,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 05:16:49,836 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 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 05:16:49,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:16:49,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-21 05:16:49,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-21 05:16:49,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:49,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2023-12-21 05:16:49,844 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 11 [2023-12-21 05:16:49,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:49,844 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2023-12-21 05:16:49,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:49,845 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2023-12-21 05:16:49,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-21 05:16:49,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:49,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:49,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 05:16:49,846 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:49,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:49,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1563678511, now seen corresponding path program 1 times [2023-12-21 05:16:49,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:49,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005514644] [2023-12-21 05:16:49,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:49,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:49,931 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 05:16:49,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:49,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005514644] [2023-12-21 05:16:49,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005514644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:16:49,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:16:49,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 05:16:49,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011033524] [2023-12-21 05:16:49,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:16:49,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 05:16:49,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:49,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 05:16:49,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 05:16:49,932 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:49,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:49,954 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2023-12-21 05:16:49,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 05:16:49,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2023-12-21 05:16:49,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:49,955 INFO L225 Difference]: With dead ends: 41 [2023-12-21 05:16:49,955 INFO L226 Difference]: Without dead ends: 23 [2023-12-21 05:16:49,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 05:16:49,956 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:49,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:16:49,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-21 05:16:49,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-21 05:16:49,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 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 05:16:49,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2023-12-21 05:16:49,959 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 11 [2023-12-21 05:16:49,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:49,959 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2023-12-21 05:16:49,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:49,959 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2023-12-21 05:16:49,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-21 05:16:49,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:49,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:49,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 05:16:49,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:49,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:49,960 INFO L85 PathProgramCache]: Analyzing trace with hash 425171484, now seen corresponding path program 1 times [2023-12-21 05:16:49,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:49,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221647765] [2023-12-21 05:16:49,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:49,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:49,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:49,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:49,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221647765] [2023-12-21 05:16:49,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221647765] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:49,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145315914] [2023-12-21 05:16:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:49,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:49,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:50,000 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 05:16:50,030 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 05:16:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:50,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 05:16:50,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:50,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 05:16:50,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 05:16:50,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145315914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:16:50,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 05:16:50,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2023-12-21 05:16:50,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573091466] [2023-12-21 05:16:50,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:16:50,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 05:16:50,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:50,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 05:16:50,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 05:16:50,201 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:50,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:50,257 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2023-12-21 05:16:50,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 05:16:50,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2023-12-21 05:16:50,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:50,258 INFO L225 Difference]: With dead ends: 34 [2023-12-21 05:16:50,258 INFO L226 Difference]: Without dead ends: 24 [2023-12-21 05:16:50,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-21 05:16:50,264 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:50,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:16:50,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-21 05:16:50,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2023-12-21 05:16:50,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:50,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2023-12-21 05:16:50,270 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 12 [2023-12-21 05:16:50,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:50,270 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2023-12-21 05:16:50,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:50,270 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-12-21 05:16:50,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-21 05:16:50,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:50,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:50,280 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 05:16:50,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:50,476 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:50,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:50,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1704256970, now seen corresponding path program 1 times [2023-12-21 05:16:50,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:50,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335121265] [2023-12-21 05:16:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:50,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:50,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:50,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335121265] [2023-12-21 05:16:50,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335121265] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:50,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635142554] [2023-12-21 05:16:50,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:50,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:50,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:50,560 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 05:16:50,605 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 05:16:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:50,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 05:16:50,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:50,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:50,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:50,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:50,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635142554] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:50,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:50,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-12-21 05:16:50,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525687443] [2023-12-21 05:16:50,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:50,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 05:16:50,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:50,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 05:16:50,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-12-21 05:16:50,651 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 05:16:50,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:50,682 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2023-12-21 05:16:50,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 05:16:50,682 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 12 [2023-12-21 05:16:50,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:50,683 INFO L225 Difference]: With dead ends: 42 [2023-12-21 05:16:50,683 INFO L226 Difference]: Without dead ends: 24 [2023-12-21 05:16:50,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-12-21 05:16:50,684 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:50,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:16:50,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-21 05:16:50,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-21 05:16:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 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 05:16:50,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2023-12-21 05:16:50,689 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 12 [2023-12-21 05:16:50,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:50,689 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2023-12-21 05:16:50,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 05:16:50,689 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-12-21 05:16:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-21 05:16:50,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:50,690 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:50,712 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 05:16:50,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:50,917 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:50,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:50,917 INFO L85 PathProgramCache]: Analyzing trace with hash 68958223, now seen corresponding path program 2 times [2023-12-21 05:16:50,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:50,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379266523] [2023-12-21 05:16:50,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:50,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:51,076 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 05:16:51,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:51,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379266523] [2023-12-21 05:16:51,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379266523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:16:51,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:16:51,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 05:16:51,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052681650] [2023-12-21 05:16:51,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:16:51,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 05:16:51,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:51,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 05:16:51,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 05:16:51,078 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:51,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:51,118 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2023-12-21 05:16:51,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 05:16:51,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 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 13 [2023-12-21 05:16:51,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:51,121 INFO L225 Difference]: With dead ends: 28 [2023-12-21 05:16:51,121 INFO L226 Difference]: Without dead ends: 24 [2023-12-21 05:16:51,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 05:16:51,122 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:51,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 15 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:16:51,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-21 05:16:51,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-21 05:16:51,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:51,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-12-21 05:16:51,137 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 13 [2023-12-21 05:16:51,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:51,137 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-12-21 05:16:51,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:51,137 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-12-21 05:16:51,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 05:16:51,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:51,138 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:51,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 05:16:51,138 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:51,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:51,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1654530356, now seen corresponding path program 1 times [2023-12-21 05:16:51,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:51,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207882193] [2023-12-21 05:16:51,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:51,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:51,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 05:16:51,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:51,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207882193] [2023-12-21 05:16:51,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207882193] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:51,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054816990] [2023-12-21 05:16:51,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:51,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:51,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:51,241 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 05:16:51,263 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 05:16:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:51,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 05:16:51,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 05:16:51,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:51,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 05:16:51,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054816990] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:51,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:51,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2023-12-21 05:16:51,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678637898] [2023-12-21 05:16:51,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:51,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 05:16:51,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:51,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 05:16:51,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-21 05:16:51,324 INFO L87 Difference]: Start difference. First operand 24 states and 28 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 05:16:51,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:51,350 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2023-12-21 05:16:51,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 05:16:51,351 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 17 [2023-12-21 05:16:51,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:51,351 INFO L225 Difference]: With dead ends: 40 [2023-12-21 05:16:51,351 INFO L226 Difference]: Without dead ends: 28 [2023-12-21 05:16:51,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-21 05:16:51,352 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:51,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:16:51,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-21 05:16:51,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-21 05:16:51,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 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 05:16:51,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2023-12-21 05:16:51,356 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 17 [2023-12-21 05:16:51,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:51,357 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2023-12-21 05:16:51,357 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 05:16:51,357 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-12-21 05:16:51,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 05:16:51,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:51,357 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:51,367 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 05:16:51,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:51,562 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:51,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:51,562 INFO L85 PathProgramCache]: Analyzing trace with hash -831106316, now seen corresponding path program 1 times [2023-12-21 05:16:51,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:51,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564105000] [2023-12-21 05:16:51,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:51,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 05:16:51,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:51,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564105000] [2023-12-21 05:16:51,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564105000] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:51,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779477666] [2023-12-21 05:16:51,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:51,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:51,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:51,645 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 05:16:51,664 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 05:16:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:51,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 05:16:51,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 05:16:51,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:51,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 05:16:51,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779477666] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:51,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:51,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-12-21 05:16:51,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786710794] [2023-12-21 05:16:51,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:51,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 05:16:51,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:51,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 05:16:51,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-21 05:16:51,749 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:51,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:51,808 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2023-12-21 05:16:51,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 05:16:51,809 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 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 05:16:51,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:51,810 INFO L225 Difference]: With dead ends: 39 [2023-12-21 05:16:51,810 INFO L226 Difference]: Without dead ends: 34 [2023-12-21 05:16:51,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-21 05:16:51,811 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:51,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 43 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:16:51,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-21 05:16:51,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2023-12-21 05:16:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 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 05:16:51,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2023-12-21 05:16:51,818 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 18 [2023-12-21 05:16:51,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:51,818 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2023-12-21 05:16:51,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:51,818 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2023-12-21 05:16:51,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 05:16:51,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:51,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:51,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-21 05:16:52,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:52,019 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:52,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:52,020 INFO L85 PathProgramCache]: Analyzing trace with hash -829259274, now seen corresponding path program 1 times [2023-12-21 05:16:52,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:52,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491588526] [2023-12-21 05:16:52,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:52,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:52,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 05:16:52,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:52,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491588526] [2023-12-21 05:16:52,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491588526] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:16:52,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:16:52,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 05:16:52,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391360172] [2023-12-21 05:16:52,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:16:52,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 05:16:52,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:52,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 05:16:52,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 05:16:52,064 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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 05:16:52,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:52,079 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2023-12-21 05:16:52,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 05:16:52,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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 18 [2023-12-21 05:16:52,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:52,080 INFO L225 Difference]: With dead ends: 35 [2023-12-21 05:16:52,080 INFO L226 Difference]: Without dead ends: 29 [2023-12-21 05:16:52,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 05:16:52,081 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:52,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:16:52,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-21 05:16:52,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-21 05:16:52,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 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 05:16:52,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-12-21 05:16:52,086 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 18 [2023-12-21 05:16:52,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:52,086 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-12-21 05:16:52,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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 05:16:52,086 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-12-21 05:16:52,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-21 05:16:52,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:52,086 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:52,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 05:16:52,086 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:52,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:52,087 INFO L85 PathProgramCache]: Analyzing trace with hash -777338956, now seen corresponding path program 2 times [2023-12-21 05:16:52,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:52,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746740740] [2023-12-21 05:16:52,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:52,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:52,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:52,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746740740] [2023-12-21 05:16:52,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746740740] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:52,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477547433] [2023-12-21 05:16:52,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:16:52,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:52,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:52,276 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 05:16:52,296 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 05:16:52,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:16:52,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:52,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 05:16:52,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:52,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:52,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:52,707 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:52,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477547433] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:52,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:52,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2023-12-21 05:16:52,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228200581] [2023-12-21 05:16:52,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:52,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 05:16:52,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:52,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 05:16:52,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2023-12-21 05:16:52,709 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 24 states, 24 states have (on average 1.5) internal successors, (36), 24 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 05:16:52,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:52,856 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2023-12-21 05:16:52,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 05:16:52,857 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5) internal successors, (36), 24 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) Word has length 19 [2023-12-21 05:16:52,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:52,857 INFO L225 Difference]: With dead ends: 42 [2023-12-21 05:16:52,857 INFO L226 Difference]: Without dead ends: 28 [2023-12-21 05:16:52,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2023-12-21 05:16:52,858 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 45 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:52,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 46 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:16:52,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-21 05:16:52,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-21 05:16:52,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 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 05:16:52,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-12-21 05:16:52,870 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 19 [2023-12-21 05:16:52,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:52,870 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-12-21 05:16:52,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5) internal successors, (36), 24 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 05:16:52,870 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-12-21 05:16:52,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-21 05:16:52,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:52,874 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:52,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-21 05:16:53,078 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,SelfDestructingSolverStorable9 [2023-12-21 05:16:53,078 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:53,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:53,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1274990161, now seen corresponding path program 2 times [2023-12-21 05:16:53,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:53,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223113375] [2023-12-21 05:16:53,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:53,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:53,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:53,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223113375] [2023-12-21 05:16:53,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223113375] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:53,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127081002] [2023-12-21 05:16:53,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:16:53,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:53,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:53,308 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 05:16:53,344 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 05:16:53,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:16:53,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:53,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 05:16:53,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:53,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:53,714 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:53,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127081002] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:53,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:53,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2023-12-21 05:16:53,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961122165] [2023-12-21 05:16:53,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:53,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 05:16:53,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:53,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 05:16:53,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2023-12-21 05:16:53,717 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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 05:16:53,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:53,840 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2023-12-21 05:16:53,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 05:16:53,840 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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) Word has length 19 [2023-12-21 05:16:53,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:53,841 INFO L225 Difference]: With dead ends: 35 [2023-12-21 05:16:53,841 INFO L226 Difference]: Without dead ends: 29 [2023-12-21 05:16:53,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2023-12-21 05:16:53,842 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 68 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:53,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 28 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:16:53,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-21 05:16:53,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-21 05:16:53,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 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 05:16:53,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-12-21 05:16:53,851 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 19 [2023-12-21 05:16:53,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:53,852 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-12-21 05:16:53,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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 05:16:53,852 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-12-21 05:16:53,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 05:16:53,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:53,852 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:53,866 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 05:16:54,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:54,057 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:54,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:54,058 INFO L85 PathProgramCache]: Analyzing trace with hash 31731131, now seen corresponding path program 3 times [2023-12-21 05:16:54,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:54,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932363230] [2023-12-21 05:16:54,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:54,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:54,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:54,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932363230] [2023-12-21 05:16:54,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932363230] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:54,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051531975] [2023-12-21 05:16:54,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:16:54,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:54,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:54,341 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 05:16:54,367 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 05:16:54,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 05:16:54,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:54,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 05:16:54,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:54,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:54,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051531975] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:54,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:54,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 31 [2023-12-21 05:16:54,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502554240] [2023-12-21 05:16:54,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:54,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 05:16:54,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:54,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 05:16:54,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2023-12-21 05:16:54,915 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 31 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 05:16:55,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:55,207 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2023-12-21 05:16:55,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 05:16:55,207 INFO L78 Accepts]: Start accepts. Automaton has has 31 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) Word has length 20 [2023-12-21 05:16:55,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:55,208 INFO L225 Difference]: With dead ends: 47 [2023-12-21 05:16:55,208 INFO L226 Difference]: Without dead ends: 32 [2023-12-21 05:16:55,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=306, Invalid=1254, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 05:16:55,209 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 45 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:55,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 62 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:16:55,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-21 05:16:55,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2023-12-21 05:16:55,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 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 05:16:55,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2023-12-21 05:16:55,214 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2023-12-21 05:16:55,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:55,214 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2023-12-21 05:16:55,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 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 05:16:55,214 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2023-12-21 05:16:55,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 05:16:55,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:55,214 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:55,219 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 05:16:55,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:55,419 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:55,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:55,419 INFO L85 PathProgramCache]: Analyzing trace with hash -556921925, now seen corresponding path program 3 times [2023-12-21 05:16:55,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:55,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872408792] [2023-12-21 05:16:55,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:55,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:55,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:55,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872408792] [2023-12-21 05:16:55,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872408792] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:55,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043617406] [2023-12-21 05:16:55,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:16:55,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:55,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:55,631 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 05:16:55,658 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 05:16:55,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 05:16:55,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:55,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 05:16:55,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:55,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:56,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043617406] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:56,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:56,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 30 [2023-12-21 05:16:56,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724636992] [2023-12-21 05:16:56,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:56,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 05:16:56,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:56,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 05:16:56,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2023-12-21 05:16:56,127 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 30 states, 30 states have (on average 1.4) internal successors, (42), 30 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 05:16:56,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:56,323 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2023-12-21 05:16:56,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 05:16:56,324 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.4) internal successors, (42), 30 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 20 [2023-12-21 05:16:56,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:56,324 INFO L225 Difference]: With dead ends: 42 [2023-12-21 05:16:56,324 INFO L226 Difference]: Without dead ends: 36 [2023-12-21 05:16:56,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 18 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=1180, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 05:16:56,325 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 74 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:56,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 50 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:16:56,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-21 05:16:56,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2023-12-21 05:16:56,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 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 05:16:56,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2023-12-21 05:16:56,330 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 20 [2023-12-21 05:16:56,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:56,330 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2023-12-21 05:16:56,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.4) internal successors, (42), 30 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 05:16:56,331 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2023-12-21 05:16:56,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-21 05:16:56,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:56,331 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:56,348 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 05:16:56,536 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,SelfDestructingSolverStorable12 [2023-12-21 05:16:56,536 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:56,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:56,536 INFO L85 PathProgramCache]: Analyzing trace with hash -867557427, now seen corresponding path program 4 times [2023-12-21 05:16:56,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:56,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498488858] [2023-12-21 05:16:56,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:56,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:56,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:56,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498488858] [2023-12-21 05:16:56,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498488858] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:56,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539367444] [2023-12-21 05:16:56,756 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:16:56,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:56,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:56,757 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 05:16:56,772 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 05:16:56,788 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:16:56,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:56,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 05:16:56,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:57,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:57,211 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:57,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539367444] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:57,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:57,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 29 [2023-12-21 05:16:57,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531622057] [2023-12-21 05:16:57,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:57,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 05:16:57,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:57,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 05:16:57,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2023-12-21 05:16:57,213 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 29 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 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 05:16:57,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:57,372 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2023-12-21 05:16:57,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 05:16:57,372 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 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 21 [2023-12-21 05:16:57,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:57,372 INFO L225 Difference]: With dead ends: 46 [2023-12-21 05:16:57,372 INFO L226 Difference]: Without dead ends: 31 [2023-12-21 05:16:57,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=254, Invalid=936, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 05:16:57,373 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 32 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:57,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 34 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:16:57,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-21 05:16:57,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-12-21 05:16:57,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 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 05:16:57,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2023-12-21 05:16:57,379 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2023-12-21 05:16:57,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:57,380 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2023-12-21 05:16:57,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 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 05:16:57,380 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2023-12-21 05:16:57,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-21 05:16:57,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:57,381 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:57,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-21 05:16:57,581 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,SelfDestructingSolverStorable13 [2023-12-21 05:16:57,582 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:57,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:57,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1725275500, now seen corresponding path program 4 times [2023-12-21 05:16:57,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:57,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798334662] [2023-12-21 05:16:57,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:57,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:57,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:57,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798334662] [2023-12-21 05:16:57,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798334662] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:57,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035882464] [2023-12-21 05:16:57,876 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:16:57,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:57,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:57,877 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 05:16:57,927 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 05:16:57,932 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:16:57,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:57,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 05:16:57,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:58,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:58,380 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:58,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035882464] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:58,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:58,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 29 [2023-12-21 05:16:58,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522500711] [2023-12-21 05:16:58,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:58,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 05:16:58,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:58,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 05:16:58,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812 [2023-12-21 05:16:58,382 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 29 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 29 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 05:16:58,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:58,509 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2023-12-21 05:16:58,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 05:16:58,510 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 29 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 21 [2023-12-21 05:16:58,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:58,510 INFO L225 Difference]: With dead ends: 38 [2023-12-21 05:16:58,510 INFO L226 Difference]: Without dead ends: 32 [2023-12-21 05:16:58,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 05:16:58,511 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 67 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:58,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 31 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:16:58,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-21 05:16:58,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-21 05:16:58,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 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 05:16:58,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2023-12-21 05:16:58,516 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 21 [2023-12-21 05:16:58,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:58,516 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2023-12-21 05:16:58,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 29 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 05:16:58,516 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2023-12-21 05:16:58,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 05:16:58,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:58,517 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:58,521 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 05:16:58,721 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,SelfDestructingSolverStorable14 [2023-12-21 05:16:58,721 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:58,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:58,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1512776152, now seen corresponding path program 5 times [2023-12-21 05:16:58,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:58,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176641756] [2023-12-21 05:16:58,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:58,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:58,979 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:58,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:58,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176641756] [2023-12-21 05:16:58,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176641756] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:58,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101288776] [2023-12-21 05:16:58,979 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:16:58,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:58,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:58,980 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 05:16:59,011 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 05:16:59,029 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-21 05:16:59,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:16:59,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 05:16:59,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:16:59,298 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:59,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:16:59,613 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:59,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101288776] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:16:59,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:16:59,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2023-12-21 05:16:59,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669682827] [2023-12-21 05:16:59,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:16:59,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-21 05:16:59,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:16:59,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-21 05:16:59,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1027, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 05:16:59,615 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 36 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 05:16:59,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:59,917 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2023-12-21 05:16:59,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 05:16:59,917 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 36 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 22 [2023-12-21 05:16:59,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:59,917 INFO L225 Difference]: With dead ends: 51 [2023-12-21 05:16:59,917 INFO L226 Difference]: Without dead ends: 35 [2023-12-21 05:16:59,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 17 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=396, Invalid=1674, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 05:16:59,919 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 42 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:59,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 47 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:16:59,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-21 05:16:59,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2023-12-21 05:16:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 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 05:16:59,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2023-12-21 05:16:59,924 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 22 [2023-12-21 05:16:59,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:59,924 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2023-12-21 05:16:59,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 36 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 05:16:59,924 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2023-12-21 05:16:59,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 05:16:59,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:59,924 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:59,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-21 05:17:00,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-21 05:17:00,125 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:00,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:00,125 INFO L85 PathProgramCache]: Analyzing trace with hash 499811860, now seen corresponding path program 5 times [2023-12-21 05:17:00,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:00,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212006845] [2023-12-21 05:17:00,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:00,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:00,376 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:00,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:00,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212006845] [2023-12-21 05:17:00,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212006845] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:00,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724015959] [2023-12-21 05:17:00,377 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:17:00,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:00,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:00,387 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 05:17:00,388 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 05:17:00,418 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-21 05:17:00,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:00,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 05:17:00,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:00,701 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:00,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:00,972 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:00,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724015959] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:00,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:00,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2023-12-21 05:17:00,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281571098] [2023-12-21 05:17:00,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:00,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 05:17:00,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:00,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 05:17:00,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=962, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 05:17:00,973 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 35 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 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 05:17:01,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:01,184 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2023-12-21 05:17:01,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 05:17:01,185 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 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 22 [2023-12-21 05:17:01,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:01,185 INFO L225 Difference]: With dead ends: 45 [2023-12-21 05:17:01,185 INFO L226 Difference]: Without dead ends: 39 [2023-12-21 05:17:01,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 18 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=396, Invalid=1584, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 05:17:01,186 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 52 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:01,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 54 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:01,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-21 05:17:01,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2023-12-21 05:17:01,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 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 05:17:01,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2023-12-21 05:17:01,191 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 22 [2023-12-21 05:17:01,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:01,191 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2023-12-21 05:17:01,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 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 05:17:01,192 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2023-12-21 05:17:01,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 05:17:01,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:01,192 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:01,196 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 05:17:01,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-21 05:17:01,397 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:01,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:01,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1826418836, now seen corresponding path program 6 times [2023-12-21 05:17:01,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:01,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986780031] [2023-12-21 05:17:01,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:01,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:01,613 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:01,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:01,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986780031] [2023-12-21 05:17:01,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986780031] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:01,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507752682] [2023-12-21 05:17:01,614 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:17:01,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:01,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:01,615 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 05:17:01,632 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 05:17:01,661 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-21 05:17:01,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:01,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 05:17:01,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:01,922 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:01,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:02,126 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:02,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507752682] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:02,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:02,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2023-12-21 05:17:02,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939363751] [2023-12-21 05:17:02,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:02,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 05:17:02,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:02,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 05:17:02,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=896, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 05:17:02,128 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 34 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 34 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 05:17:02,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:02,324 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2023-12-21 05:17:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 05:17:02,325 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 34 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 23 [2023-12-21 05:17:02,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:02,325 INFO L225 Difference]: With dead ends: 50 [2023-12-21 05:17:02,325 INFO L226 Difference]: Without dead ends: 34 [2023-12-21 05:17:02,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=342, Invalid=1298, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 05:17:02,326 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 34 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:02,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 58 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:02,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-21 05:17:02,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-12-21 05:17:02,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 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 05:17:02,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2023-12-21 05:17:02,331 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 23 [2023-12-21 05:17:02,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:02,331 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2023-12-21 05:17:02,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 34 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 05:17:02,331 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2023-12-21 05:17:02,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 05:17:02,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:02,332 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:02,339 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 05:17:02,536 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,SelfDestructingSolverStorable17 [2023-12-21 05:17:02,537 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:02,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:02,537 INFO L85 PathProgramCache]: Analyzing trace with hash 951551089, now seen corresponding path program 6 times [2023-12-21 05:17:02,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:02,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525868770] [2023-12-21 05:17:02,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:02,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:02,770 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:02,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:02,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525868770] [2023-12-21 05:17:02,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525868770] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:02,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591597964] [2023-12-21 05:17:02,770 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:17:02,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:02,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:02,784 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 05:17:02,794 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 05:17:02,831 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-21 05:17:02,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:02,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 05:17:02,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:03,058 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:03,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:03,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591597964] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:03,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:03,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2023-12-21 05:17:03,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652912319] [2023-12-21 05:17:03,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:03,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 05:17:03,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:03,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 05:17:03,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 05:17:03,303 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 34 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 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 05:17:03,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:03,502 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2023-12-21 05:17:03,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 05:17:03,503 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 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 23 [2023-12-21 05:17:03,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:03,503 INFO L225 Difference]: With dead ends: 41 [2023-12-21 05:17:03,503 INFO L226 Difference]: Without dead ends: 35 [2023-12-21 05:17:03,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=357, Invalid=1283, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 05:17:03,504 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 64 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:03,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 47 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:03,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-21 05:17:03,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-12-21 05:17:03,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 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 05:17:03,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2023-12-21 05:17:03,510 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 23 [2023-12-21 05:17:03,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:03,510 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2023-12-21 05:17:03,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 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 05:17:03,510 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2023-12-21 05:17:03,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 05:17:03,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:03,510 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:03,517 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 05:17:03,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:03,715 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:03,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:03,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1404945509, now seen corresponding path program 7 times [2023-12-21 05:17:03,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:03,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858433198] [2023-12-21 05:17:03,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:03,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:04,004 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:04,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:04,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858433198] [2023-12-21 05:17:04,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858433198] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:04,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517199937] [2023-12-21 05:17:04,004 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:17:04,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:04,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:04,014 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 05:17:04,020 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 05:17:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:04,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 05:17:04,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:04,485 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:04,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:04,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517199937] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:04,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:04,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2023-12-21 05:17:04,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626074320] [2023-12-21 05:17:04,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:04,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-21 05:17:04,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:04,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-21 05:17:04,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1341, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 05:17:04,819 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 41 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 41 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 05:17:05,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:05,110 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2023-12-21 05:17:05,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 05:17:05,111 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 41 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 24 [2023-12-21 05:17:05,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:05,111 INFO L225 Difference]: With dead ends: 55 [2023-12-21 05:17:05,111 INFO L226 Difference]: Without dead ends: 38 [2023-12-21 05:17:05,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 16 SyntacticMatches, 9 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=500, Invalid=2152, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 05:17:05,112 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 43 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:05,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 44 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:05,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-21 05:17:05,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2023-12-21 05:17:05,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 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 05:17:05,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2023-12-21 05:17:05,118 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 24 [2023-12-21 05:17:05,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:05,118 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2023-12-21 05:17:05,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 41 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 05:17:05,118 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2023-12-21 05:17:05,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 05:17:05,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:05,118 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:05,125 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 05:17:05,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:05,325 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:05,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:05,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1608311067, now seen corresponding path program 7 times [2023-12-21 05:17:05,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:05,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898241770] [2023-12-21 05:17:05,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:05,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:05,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:05,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898241770] [2023-12-21 05:17:05,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898241770] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:05,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667408941] [2023-12-21 05:17:05,599 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:17:05,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:05,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:05,600 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 05:17:05,601 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 05:17:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:05,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 05:17:05,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:05,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:06,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667408941] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:06,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:06,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2023-12-21 05:17:06,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789527597] [2023-12-21 05:17:06,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:06,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-21 05:17:06,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:06,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-21 05:17:06,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1265, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 05:17:06,180 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 40 states, 40 states have (on average 1.3) internal successors, (52), 40 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 05:17:06,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:06,419 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2023-12-21 05:17:06,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 05:17:06,420 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.3) internal successors, (52), 40 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 24 [2023-12-21 05:17:06,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:06,420 INFO L225 Difference]: With dead ends: 48 [2023-12-21 05:17:06,420 INFO L226 Difference]: Without dead ends: 42 [2023-12-21 05:17:06,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1155 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=504, Invalid=2046, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 05:17:06,421 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 54 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:06,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 42 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:06,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-21 05:17:06,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2023-12-21 05:17:06,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 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 05:17:06,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2023-12-21 05:17:06,428 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 24 [2023-12-21 05:17:06,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:06,428 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2023-12-21 05:17:06,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.3) internal successors, (52), 40 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 05:17:06,428 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2023-12-21 05:17:06,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 05:17:06,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:06,428 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:06,435 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 05:17:06,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:06,629 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:06,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:06,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1830155885, now seen corresponding path program 8 times [2023-12-21 05:17:06,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:06,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050068320] [2023-12-21 05:17:06,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:06,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:06,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:06,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050068320] [2023-12-21 05:17:06,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050068320] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:06,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43313746] [2023-12-21 05:17:06,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:17:06,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:06,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:06,893 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 05:17:06,928 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 05:17:06,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:17:06,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:06,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 05:17:06,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:07,232 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:07,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:07,452 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:07,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43313746] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:07,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:07,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 39 [2023-12-21 05:17:07,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922301989] [2023-12-21 05:17:07,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:07,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-21 05:17:07,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:07,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-21 05:17:07,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1189, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 05:17:07,454 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 39 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 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 05:17:07,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:07,648 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2023-12-21 05:17:07,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 05:17:07,649 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 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 25 [2023-12-21 05:17:07,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:07,649 INFO L225 Difference]: With dead ends: 54 [2023-12-21 05:17:07,649 INFO L226 Difference]: Without dead ends: 37 [2023-12-21 05:17:07,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 21 SyntacticMatches, 8 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=444, Invalid=1718, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 05:17:07,650 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 24 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:07,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 51 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:07,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-21 05:17:07,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-12-21 05:17:07,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 36 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 05:17:07,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2023-12-21 05:17:07,657 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 25 [2023-12-21 05:17:07,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:07,657 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2023-12-21 05:17:07,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 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 05:17:07,657 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2023-12-21 05:17:07,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 05:17:07,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:07,657 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:07,664 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 05:17:07,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:07,862 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:07,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:07,862 INFO L85 PathProgramCache]: Analyzing trace with hash 423648244, now seen corresponding path program 8 times [2023-12-21 05:17:07,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:07,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511360455] [2023-12-21 05:17:07,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:07,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:08,132 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:08,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:08,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511360455] [2023-12-21 05:17:08,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511360455] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:08,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66026051] [2023-12-21 05:17:08,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:17:08,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:08,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:08,134 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 05:17:08,135 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 05:17:08,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:17:08,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:08,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 05:17:08,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:08,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:08,592 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:08,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66026051] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:08,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:08,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 39 [2023-12-21 05:17:08,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029111992] [2023-12-21 05:17:08,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:08,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-21 05:17:08,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:08,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-21 05:17:08,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1184, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 05:17:08,595 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 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 05:17:08,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:08,749 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2023-12-21 05:17:08,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 05:17:08,750 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 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 25 [2023-12-21 05:17:08,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:08,750 INFO L225 Difference]: With dead ends: 44 [2023-12-21 05:17:08,750 INFO L226 Difference]: Without dead ends: 38 [2023-12-21 05:17:08,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 21 SyntacticMatches, 8 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=463, Invalid=1699, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 05:17:08,751 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 107 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:08,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 37 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:08,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-21 05:17:08,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-12-21 05:17:08,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 37 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 05:17:08,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2023-12-21 05:17:08,758 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 25 [2023-12-21 05:17:08,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:08,758 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2023-12-21 05:17:08,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 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 05:17:08,758 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2023-12-21 05:17:08,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 05:17:08,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:08,759 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:08,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-21 05:17:08,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:08,963 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:08,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:08,963 INFO L85 PathProgramCache]: Analyzing trace with hash -590064520, now seen corresponding path program 9 times [2023-12-21 05:17:08,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:08,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926638084] [2023-12-21 05:17:08,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:08,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:09,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:09,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926638084] [2023-12-21 05:17:09,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926638084] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:09,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438886590] [2023-12-21 05:17:09,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:17:09,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:09,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:09,272 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 05:17:09,277 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 05:17:09,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 05:17:09,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:09,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 05:17:09,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:09,723 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:09,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:10,122 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:10,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438886590] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:10,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:10,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 46 [2023-12-21 05:17:10,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292155243] [2023-12-21 05:17:10,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:10,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-21 05:17:10,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:10,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-21 05:17:10,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=1696, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 05:17:10,123 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 46 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 46 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 05:17:10,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:10,437 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2023-12-21 05:17:10,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 05:17:10,438 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 46 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 26 [2023-12-21 05:17:10,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:10,438 INFO L225 Difference]: With dead ends: 59 [2023-12-21 05:17:10,438 INFO L226 Difference]: Without dead ends: 41 [2023-12-21 05:17:10,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 16 SyntacticMatches, 10 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1579 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=618, Invalid=2688, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 05:17:10,439 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 51 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:10,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 46 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:10,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-21 05:17:10,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2023-12-21 05:17:10,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 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 05:17:10,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2023-12-21 05:17:10,447 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 26 [2023-12-21 05:17:10,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:10,447 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2023-12-21 05:17:10,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 46 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 05:17:10,447 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2023-12-21 05:17:10,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 05:17:10,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:10,447 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:10,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-21 05:17:10,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:10,654 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:10,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:10,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1612979916, now seen corresponding path program 9 times [2023-12-21 05:17:10,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:10,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864242437] [2023-12-21 05:17:10,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:10,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:11,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:11,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864242437] [2023-12-21 05:17:11,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864242437] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:11,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661399368] [2023-12-21 05:17:11,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:17:11,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:11,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:11,012 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 05:17:11,014 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 05:17:11,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 05:17:11,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:11,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 05:17:11,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:11,391 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:11,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:11,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661399368] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:11,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:11,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 45 [2023-12-21 05:17:11,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612648393] [2023-12-21 05:17:11,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:11,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-21 05:17:11,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:11,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-21 05:17:11,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1609, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 05:17:11,718 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 45 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 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 05:17:11,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:11,964 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2023-12-21 05:17:11,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 05:17:11,964 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 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 26 [2023-12-21 05:17:11,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:11,964 INFO L225 Difference]: With dead ends: 51 [2023-12-21 05:17:11,965 INFO L226 Difference]: Without dead ends: 45 [2023-12-21 05:17:11,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 18 SyntacticMatches, 9 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1503 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=626, Invalid=2566, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 05:17:11,966 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 88 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:11,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 38 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:11,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-21 05:17:11,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2023-12-21 05:17:11,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 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 05:17:11,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2023-12-21 05:17:11,974 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 26 [2023-12-21 05:17:11,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:11,974 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2023-12-21 05:17:11,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 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 05:17:11,974 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2023-12-21 05:17:11,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-21 05:17:11,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:11,974 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:11,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-21 05:17:12,179 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,SelfDestructingSolverStorable24 [2023-12-21 05:17:12,179 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:12,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:12,180 INFO L85 PathProgramCache]: Analyzing trace with hash 754383220, now seen corresponding path program 10 times [2023-12-21 05:17:12,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:12,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004692033] [2023-12-21 05:17:12,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:12,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:12,472 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:12,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:12,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004692033] [2023-12-21 05:17:12,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004692033] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:12,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810105538] [2023-12-21 05:17:12,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:17:12,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:12,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:12,480 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 05:17:12,496 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 05:17:12,524 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:17:12,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:12,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 05:17:12,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:12,820 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:12,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:13,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810105538] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:13,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:13,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 44 [2023-12-21 05:17:13,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152974140] [2023-12-21 05:17:13,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:13,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 05:17:13,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:13,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 05:17:13,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=1523, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 05:17:13,049 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 44 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 44 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 05:17:13,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:13,231 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2023-12-21 05:17:13,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 05:17:13,231 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 44 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 27 [2023-12-21 05:17:13,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:13,231 INFO L225 Difference]: With dead ends: 58 [2023-12-21 05:17:13,231 INFO L226 Difference]: Without dead ends: 40 [2023-12-21 05:17:13,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 22 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1369 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=560, Invalid=2196, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 05:17:13,232 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 29 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:13,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 56 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:13,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-21 05:17:13,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-12-21 05:17:13,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 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 05:17:13,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2023-12-21 05:17:13,240 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 27 [2023-12-21 05:17:13,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:13,240 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2023-12-21 05:17:13,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 44 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 05:17:13,241 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2023-12-21 05:17:13,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-21 05:17:13,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:13,241 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:13,245 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 05:17:13,445 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,SelfDestructingSolverStorable25 [2023-12-21 05:17:13,445 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:13,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:13,446 INFO L85 PathProgramCache]: Analyzing trace with hash 46908049, now seen corresponding path program 10 times [2023-12-21 05:17:13,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:13,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647371431] [2023-12-21 05:17:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:13,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:13,812 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:13,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:13,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647371431] [2023-12-21 05:17:13,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647371431] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:13,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148686226] [2023-12-21 05:17:13,813 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:17:13,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:13,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:13,815 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 05:17:13,815 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 05:17:13,844 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:17:13,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:13,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 05:17:13,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:14,171 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:14,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:14,432 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:14,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148686226] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:14,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:14,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 44 [2023-12-21 05:17:14,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449507922] [2023-12-21 05:17:14,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:14,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 05:17:14,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:14,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 05:17:14,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=1517, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 05:17:14,434 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 44 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 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 05:17:14,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:14,580 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2023-12-21 05:17:14,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 05:17:14,581 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 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 27 [2023-12-21 05:17:14,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:14,581 INFO L225 Difference]: With dead ends: 47 [2023-12-21 05:17:14,581 INFO L226 Difference]: Without dead ends: 41 [2023-12-21 05:17:14,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 21 SyntacticMatches, 9 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1398 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=583, Invalid=2173, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 05:17:14,582 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 74 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:14,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 26 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:14,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-21 05:17:14,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-12-21 05:17:14,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.1) internal successors, (44), 40 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 05:17:14,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2023-12-21 05:17:14,592 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 27 [2023-12-21 05:17:14,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:14,592 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2023-12-21 05:17:14,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 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 05:17:14,592 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2023-12-21 05:17:14,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-21 05:17:14,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:14,592 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:14,596 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 05:17:14,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-21 05:17:14,797 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:14,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:14,797 INFO L85 PathProgramCache]: Analyzing trace with hash 615891323, now seen corresponding path program 11 times [2023-12-21 05:17:14,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:14,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611849066] [2023-12-21 05:17:14,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:14,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 21 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:15,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:15,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611849066] [2023-12-21 05:17:15,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611849066] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:15,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701768775] [2023-12-21 05:17:15,168 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:17:15,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:15,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:15,169 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 05:17:15,171 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 05:17:15,204 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-21 05:17:15,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:15,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-21 05:17:15,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:15,640 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:15,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:16,030 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:16,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701768775] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:16,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:16,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 51 [2023-12-21 05:17:16,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488442892] [2023-12-21 05:17:16,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:16,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-21 05:17:16,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:16,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-21 05:17:16,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2092, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 05:17:16,032 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 51 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 51 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 05:17:16,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:16,393 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2023-12-21 05:17:16,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 05:17:16,393 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 51 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 28 [2023-12-21 05:17:16,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:16,393 INFO L225 Difference]: With dead ends: 63 [2023-12-21 05:17:16,393 INFO L226 Difference]: Without dead ends: 44 [2023-12-21 05:17:16,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 17 SyntacticMatches, 10 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1957 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=750, Invalid=3282, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 05:17:16,394 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 34 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:16,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 52 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:16,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-21 05:17:16,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2023-12-21 05:17:16,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 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 05:17:16,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2023-12-21 05:17:16,403 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 28 [2023-12-21 05:17:16,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:16,403 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2023-12-21 05:17:16,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 51 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 05:17:16,404 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2023-12-21 05:17:16,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-21 05:17:16,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:16,404 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:16,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-21 05:17:16,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:16,608 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:16,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:16,609 INFO L85 PathProgramCache]: Analyzing trace with hash -974303621, now seen corresponding path program 11 times [2023-12-21 05:17:16,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:16,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228130134] [2023-12-21 05:17:16,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:16,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:16,964 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 21 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:16,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:16,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228130134] [2023-12-21 05:17:16,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228130134] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:16,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635529376] [2023-12-21 05:17:16,964 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:17:16,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:16,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:16,966 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 05:17:16,966 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 05:17:16,996 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-21 05:17:16,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:16,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-21 05:17:16,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:17,313 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:17,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:17,617 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:17,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635529376] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:17,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:17,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 50 [2023-12-21 05:17:17,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901879096] [2023-12-21 05:17:17,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:17,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-21 05:17:17,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:17,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-21 05:17:17,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=456, Invalid=1994, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 05:17:17,620 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 50 states, 50 states have (on average 1.24) internal successors, (62), 50 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 05:17:17,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:17,831 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2023-12-21 05:17:17,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 05:17:17,832 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.24) internal successors, (62), 50 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 28 [2023-12-21 05:17:17,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:17,832 INFO L225 Difference]: With dead ends: 54 [2023-12-21 05:17:17,832 INFO L226 Difference]: Without dead ends: 48 [2023-12-21 05:17:17,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 18 SyntacticMatches, 10 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1896 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=762, Invalid=3144, Unknown=0, NotChecked=0, Total=3906 [2023-12-21 05:17:17,838 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 63 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:17,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 50 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:17,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-21 05:17:17,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2023-12-21 05:17:17,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 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 05:17:17,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2023-12-21 05:17:17,853 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 28 [2023-12-21 05:17:17,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:17,854 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2023-12-21 05:17:17,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.24) internal successors, (62), 50 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 05:17:17,854 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2023-12-21 05:17:17,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-21 05:17:17,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:17,854 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:17,858 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 05:17:18,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-21 05:17:18,058 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:18,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:18,058 INFO L85 PathProgramCache]: Analyzing trace with hash -921488115, now seen corresponding path program 12 times [2023-12-21 05:17:18,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:18,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614993598] [2023-12-21 05:17:18,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:18,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:18,384 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:18,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:18,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614993598] [2023-12-21 05:17:18,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614993598] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:18,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897244396] [2023-12-21 05:17:18,385 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:17:18,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:18,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:18,386 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 05:17:18,401 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 05:17:18,424 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-21 05:17:18,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:18,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 05:17:18,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:18,790 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:18,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:19,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897244396] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:19,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:19,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 49 [2023-12-21 05:17:19,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851928995] [2023-12-21 05:17:19,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:19,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-21 05:17:19,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:19,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-21 05:17:19,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=454, Invalid=1898, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 05:17:19,128 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 49 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 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 05:17:19,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:19,370 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2023-12-21 05:17:19,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 05:17:19,370 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 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 29 [2023-12-21 05:17:19,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:19,371 INFO L225 Difference]: With dead ends: 62 [2023-12-21 05:17:19,371 INFO L226 Difference]: Without dead ends: 43 [2023-12-21 05:17:19,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 22 SyntacticMatches, 9 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1745 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=690, Invalid=2732, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 05:17:19,371 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 24 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:19,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 77 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:19,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-21 05:17:19,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-12-21 05:17:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 42 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 05:17:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2023-12-21 05:17:19,381 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 29 [2023-12-21 05:17:19,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:19,381 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2023-12-21 05:17:19,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 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 05:17:19,382 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2023-12-21 05:17:19,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-21 05:17:19,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:19,382 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:19,399 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 05:17:19,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:19,582 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:19,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:19,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1433793196, now seen corresponding path program 12 times [2023-12-21 05:17:19,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:19,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115717840] [2023-12-21 05:17:19,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:19,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:19,958 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:19,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:19,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115717840] [2023-12-21 05:17:19,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115717840] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:19,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355976898] [2023-12-21 05:17:19,959 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:17:19,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:19,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:19,960 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 05:17:19,968 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 05:17:19,992 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-21 05:17:19,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:19,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 05:17:19,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:20,369 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:20,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:20,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355976898] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:20,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:20,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 49 [2023-12-21 05:17:20,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991750299] [2023-12-21 05:17:20,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:20,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-21 05:17:20,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:20,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-21 05:17:20,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1891, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 05:17:20,720 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 49 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 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 05:17:20,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:20,954 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2023-12-21 05:17:20,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 05:17:20,955 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 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 29 [2023-12-21 05:17:20,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:20,955 INFO L225 Difference]: With dead ends: 50 [2023-12-21 05:17:20,955 INFO L226 Difference]: Without dead ends: 44 [2023-12-21 05:17:20,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 21 SyntacticMatches, 10 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1777 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=717, Invalid=2705, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 05:17:20,956 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 36 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:20,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 52 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:20,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-21 05:17:20,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-21 05:17:20,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 43 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 05:17:20,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2023-12-21 05:17:20,968 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 29 [2023-12-21 05:17:20,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:20,969 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2023-12-21 05:17:20,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 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 05:17:20,969 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2023-12-21 05:17:20,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 05:17:20,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:20,969 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:20,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-21 05:17:21,174 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,SelfDestructingSolverStorable30 [2023-12-21 05:17:21,175 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:21,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:21,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1958792984, now seen corresponding path program 13 times [2023-12-21 05:17:21,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:21,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098203780] [2023-12-21 05:17:21,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:21,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:21,589 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 28 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:21,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:21,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098203780] [2023-12-21 05:17:21,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098203780] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:21,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360546745] [2023-12-21 05:17:21,590 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:17:21,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:21,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:21,591 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 05:17:21,591 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 05:17:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:21,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 05:17:21,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:22,150 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:22,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:22,579 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:22,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360546745] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:22,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:22,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 56 [2023-12-21 05:17:22,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778825679] [2023-12-21 05:17:22,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:22,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-21 05:17:22,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:22,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-21 05:17:22,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=2529, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 05:17:22,580 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 56 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 56 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 05:17:22,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:22,907 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2023-12-21 05:17:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 05:17:22,908 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 56 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 30 [2023-12-21 05:17:22,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:22,908 INFO L225 Difference]: With dead ends: 67 [2023-12-21 05:17:22,908 INFO L226 Difference]: Without dead ends: 47 [2023-12-21 05:17:22,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 17 SyntacticMatches, 11 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2403 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=896, Invalid=3934, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 05:17:22,909 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 43 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:22,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 62 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:22,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-21 05:17:22,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-12-21 05:17:22,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 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 05:17:22,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2023-12-21 05:17:22,920 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 30 [2023-12-21 05:17:22,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:22,920 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2023-12-21 05:17:22,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 56 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 05:17:22,920 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2023-12-21 05:17:22,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 05:17:22,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:22,921 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:22,927 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 05:17:23,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:23,125 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:23,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:23,126 INFO L85 PathProgramCache]: Analyzing trace with hash -37198764, now seen corresponding path program 13 times [2023-12-21 05:17:23,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:23,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558366066] [2023-12-21 05:17:23,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:23,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:23,523 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 28 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:23,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:23,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558366066] [2023-12-21 05:17:23,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558366066] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:23,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659342024] [2023-12-21 05:17:23,523 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:17:23,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:23,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:23,524 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 05:17:23,526 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 05:17:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:23,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 05:17:23,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:24,016 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:24,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:24,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659342024] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:24,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:24,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 55 [2023-12-21 05:17:24,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611807462] [2023-12-21 05:17:24,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:24,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-21 05:17:24,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:24,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-21 05:17:24,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=2420, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 05:17:24,404 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 55 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 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 05:17:24,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:24,693 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2023-12-21 05:17:24,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 05:17:24,693 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 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 30 [2023-12-21 05:17:24,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:24,693 INFO L225 Difference]: With dead ends: 57 [2023-12-21 05:17:24,693 INFO L226 Difference]: Without dead ends: 51 [2023-12-21 05:17:24,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 18 SyntacticMatches, 11 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2334 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=912, Invalid=3780, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 05:17:24,694 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 132 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:24,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 38 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:24,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-21 05:17:24,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2023-12-21 05:17:24,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 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 05:17:24,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2023-12-21 05:17:24,706 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 30 [2023-12-21 05:17:24,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:24,706 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2023-12-21 05:17:24,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 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 05:17:24,706 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2023-12-21 05:17:24,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-21 05:17:24,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:24,706 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:24,711 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 05:17:24,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:24,911 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:24,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:24,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1936008620, now seen corresponding path program 14 times [2023-12-21 05:17:24,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:24,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073358683] [2023-12-21 05:17:24,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:24,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:25,357 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 37 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:25,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:25,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073358683] [2023-12-21 05:17:25,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073358683] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:25,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022343815] [2023-12-21 05:17:25,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:17:25,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:25,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:25,358 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 05:17:25,360 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 05:17:25,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:17:25,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:25,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 05:17:25,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:25,859 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:25,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:26,274 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:26,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022343815] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:26,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:26,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 54 [2023-12-21 05:17:26,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517964993] [2023-12-21 05:17:26,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:26,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-21 05:17:26,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:26,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-21 05:17:26,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=548, Invalid=2314, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 05:17:26,288 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 54 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 54 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 05:17:26,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:26,556 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2023-12-21 05:17:26,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 05:17:26,557 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 54 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 31 [2023-12-21 05:17:26,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:26,557 INFO L225 Difference]: With dead ends: 66 [2023-12-21 05:17:26,557 INFO L226 Difference]: Without dead ends: 46 [2023-12-21 05:17:26,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 22 SyntacticMatches, 10 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2166 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=834, Invalid=3326, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 05:17:26,558 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 41 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:26,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 55 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:26,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-21 05:17:26,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-12-21 05:17:26,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 45 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 05:17:26,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2023-12-21 05:17:26,572 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 31 [2023-12-21 05:17:26,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:26,573 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2023-12-21 05:17:26,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 54 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 05:17:26,573 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2023-12-21 05:17:26,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-21 05:17:26,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:26,576 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:26,581 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 05:17:26,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:26,781 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:26,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:26,781 INFO L85 PathProgramCache]: Analyzing trace with hash -693008207, now seen corresponding path program 14 times [2023-12-21 05:17:26,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:26,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876734524] [2023-12-21 05:17:26,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:26,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 28 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:27,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:27,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876734524] [2023-12-21 05:17:27,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876734524] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:27,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220609040] [2023-12-21 05:17:27,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:17:27,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:27,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:27,258 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 05:17:27,259 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 05:17:27,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:17:27,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:27,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 05:17:27,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 36 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:27,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:28,149 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:28,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220609040] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:28,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:28,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 54 [2023-12-21 05:17:28,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799600604] [2023-12-21 05:17:28,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:28,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-21 05:17:28,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:28,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-21 05:17:28,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=2306, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 05:17:28,151 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 54 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 54 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 05:17:28,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:28,392 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2023-12-21 05:17:28,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 05:17:28,392 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 54 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 31 [2023-12-21 05:17:28,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:28,392 INFO L225 Difference]: With dead ends: 53 [2023-12-21 05:17:28,392 INFO L226 Difference]: Without dead ends: 47 [2023-12-21 05:17:28,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 21 SyntacticMatches, 11 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2201 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=865, Invalid=3295, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 05:17:28,393 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 146 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:28,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 31 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:28,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-21 05:17:28,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-12-21 05:17:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 46 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 05:17:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2023-12-21 05:17:28,406 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 31 [2023-12-21 05:17:28,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:28,406 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2023-12-21 05:17:28,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 54 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 05:17:28,406 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2023-12-21 05:17:28,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 05:17:28,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:28,406 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:28,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-21 05:17:28,611 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,SelfDestructingSolverStorable34 [2023-12-21 05:17:28,611 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:28,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:28,611 INFO L85 PathProgramCache]: Analyzing trace with hash -846676133, now seen corresponding path program 15 times [2023-12-21 05:17:28,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:28,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890749579] [2023-12-21 05:17:28,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:28,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:29,052 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 36 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:29,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:29,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890749579] [2023-12-21 05:17:29,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890749579] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:29,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924574039] [2023-12-21 05:17:29,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:17:29,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:29,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:29,054 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 05:17:29,077 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 05:17:29,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-21 05:17:29,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:29,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 05:17:29,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:29,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:30,088 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:30,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924574039] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:30,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:30,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 61 [2023-12-21 05:17:30,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830809504] [2023-12-21 05:17:30,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:30,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-21 05:17:30,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:30,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-21 05:17:30,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=3007, Unknown=0, NotChecked=0, Total=3660 [2023-12-21 05:17:30,090 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 61 states, 61 states have (on average 1.180327868852459) internal successors, (72), 61 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 05:17:30,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:30,488 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2023-12-21 05:17:30,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 05:17:30,489 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.180327868852459) internal successors, (72), 61 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 32 [2023-12-21 05:17:30,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:30,489 INFO L225 Difference]: With dead ends: 71 [2023-12-21 05:17:30,489 INFO L226 Difference]: Without dead ends: 50 [2023-12-21 05:17:30,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 16 SyntacticMatches, 13 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2926 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1056, Invalid=4644, Unknown=0, NotChecked=0, Total=5700 [2023-12-21 05:17:30,490 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 61 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:30,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 43 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:30,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-21 05:17:30,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2023-12-21 05:17:30,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 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 05:17:30,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2023-12-21 05:17:30,518 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 32 [2023-12-21 05:17:30,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:30,518 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2023-12-21 05:17:30,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.180327868852459) internal successors, (72), 61 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 05:17:30,518 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2023-12-21 05:17:30,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 05:17:30,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:30,519 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:30,525 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 05:17:30,723 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,SelfDestructingSolverStorable35 [2023-12-21 05:17:30,723 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:30,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:30,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1757500379, now seen corresponding path program 15 times [2023-12-21 05:17:30,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:30,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994828501] [2023-12-21 05:17:30,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:30,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 36 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:31,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:31,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994828501] [2023-12-21 05:17:31,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994828501] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:31,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832479372] [2023-12-21 05:17:31,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:17:31,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:31,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:31,180 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 05:17:31,182 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 05:17:31,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-21 05:17:31,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:31,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 05:17:31,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:31,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:32,040 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:32,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832479372] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:32,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:32,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 60 [2023-12-21 05:17:32,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247289577] [2023-12-21 05:17:32,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:32,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-21 05:17:32,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:32,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-21 05:17:32,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=2887, Unknown=0, NotChecked=0, Total=3540 [2023-12-21 05:17:32,041 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 60 states, 60 states have (on average 1.2) internal successors, (72), 60 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 05:17:32,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:32,285 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2023-12-21 05:17:32,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 05:17:32,286 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.2) internal successors, (72), 60 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 32 [2023-12-21 05:17:32,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:32,286 INFO L225 Difference]: With dead ends: 60 [2023-12-21 05:17:32,286 INFO L226 Difference]: Without dead ends: 54 [2023-12-21 05:17:32,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 18 SyntacticMatches, 12 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2817 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1076, Invalid=4474, Unknown=0, NotChecked=0, Total=5550 [2023-12-21 05:17:32,287 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 89 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:32,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 50 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:32,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-21 05:17:32,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2023-12-21 05:17:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 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 05:17:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2023-12-21 05:17:32,302 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 32 [2023-12-21 05:17:32,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:32,302 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2023-12-21 05:17:32,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.2) internal successors, (72), 60 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 05:17:32,302 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2023-12-21 05:17:32,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 05:17:32,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:32,302 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:32,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-21 05:17:32,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:32,507 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:32,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:32,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2134910035, now seen corresponding path program 16 times [2023-12-21 05:17:32,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:32,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017564668] [2023-12-21 05:17:32,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:32,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:32,836 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 46 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:32,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:32,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017564668] [2023-12-21 05:17:32,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017564668] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:32,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823337915] [2023-12-21 05:17:32,837 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:17:32,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:32,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:32,838 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 05:17:32,840 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 05:17:32,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:17:32,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:32,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 05:17:32,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:33,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:33,595 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:33,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823337915] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:33,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:33,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 59 [2023-12-21 05:17:33,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55020079] [2023-12-21 05:17:33,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:33,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-21 05:17:33,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:33,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-21 05:17:33,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=2771, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 05:17:33,597 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 59 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 59 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 05:17:33,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:33,816 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2023-12-21 05:17:33,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 05:17:33,816 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 59 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 33 [2023-12-21 05:17:33,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:33,816 INFO L225 Difference]: With dead ends: 70 [2023-12-21 05:17:33,816 INFO L226 Difference]: Without dead ends: 49 [2023-12-21 05:17:33,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 21 SyntacticMatches, 12 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2665 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=992, Invalid=3978, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 05:17:33,817 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 36 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:33,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 50 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:33,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-21 05:17:33,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-21 05:17:33,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 48 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 05:17:33,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2023-12-21 05:17:33,832 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 33 [2023-12-21 05:17:33,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:33,832 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2023-12-21 05:17:33,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 59 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 05:17:33,832 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2023-12-21 05:17:33,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 05:17:33,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:33,833 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:33,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-21 05:17:34,037 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,SelfDestructingSolverStorable37 [2023-12-21 05:17:34,037 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:34,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:34,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1982953140, now seen corresponding path program 16 times [2023-12-21 05:17:34,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:34,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775084164] [2023-12-21 05:17:34,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:34,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:34,447 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:34,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:34,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775084164] [2023-12-21 05:17:34,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775084164] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:34,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738882315] [2023-12-21 05:17:34,447 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:17:34,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:34,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:34,452 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 05:17:34,454 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 05:17:34,494 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:17:34,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:34,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 05:17:34,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:34,850 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:34,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:35,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738882315] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:35,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:35,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 59 [2023-12-21 05:17:35,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576556018] [2023-12-21 05:17:35,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:35,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-21 05:17:35,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:35,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-21 05:17:35,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=660, Invalid=2762, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 05:17:35,268 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 59 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 59 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 05:17:35,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:35,551 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2023-12-21 05:17:35,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 05:17:35,551 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 59 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 33 [2023-12-21 05:17:35,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:35,552 INFO L225 Difference]: With dead ends: 56 [2023-12-21 05:17:35,552 INFO L226 Difference]: Without dead ends: 50 [2023-12-21 05:17:35,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 21 SyntacticMatches, 12 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2670 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1027, Invalid=3943, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 05:17:35,553 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 81 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:35,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 34 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:35,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-21 05:17:35,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-12-21 05:17:35,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 49 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 05:17:35,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2023-12-21 05:17:35,569 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 33 [2023-12-21 05:17:35,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:35,569 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2023-12-21 05:17:35,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 59 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 05:17:35,569 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2023-12-21 05:17:35,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 05:17:35,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:35,569 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:35,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-21 05:17:35,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-21 05:17:35,774 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:35,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:35,774 INFO L85 PathProgramCache]: Analyzing trace with hash 503747000, now seen corresponding path program 17 times [2023-12-21 05:17:35,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:35,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604107807] [2023-12-21 05:17:35,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:35,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:36,345 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 45 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:36,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:36,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604107807] [2023-12-21 05:17:36,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604107807] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:36,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974964131] [2023-12-21 05:17:36,345 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:17:36,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:36,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:36,347 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 05:17:36,352 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 05:17:36,379 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-21 05:17:36,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:36,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-21 05:17:36,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:36,908 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 55 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:36,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 55 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:37,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974964131] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:37,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:37,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 66 [2023-12-21 05:17:37,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494443925] [2023-12-21 05:17:37,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:37,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-21 05:17:37,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:37,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-21 05:17:37,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=764, Invalid=3526, Unknown=0, NotChecked=0, Total=4290 [2023-12-21 05:17:37,421 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 66 states, 66 states have (on average 1.1666666666666667) internal successors, (77), 66 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 05:17:37,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:37,769 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2023-12-21 05:17:37,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 05:17:37,769 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.1666666666666667) internal successors, (77), 66 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 34 [2023-12-21 05:17:37,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:37,770 INFO L225 Difference]: With dead ends: 75 [2023-12-21 05:17:37,770 INFO L226 Difference]: Without dead ends: 53 [2023-12-21 05:17:37,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 16 SyntacticMatches, 14 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3465 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1230, Invalid=5412, Unknown=0, NotChecked=0, Total=6642 [2023-12-21 05:17:37,770 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 50 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:37,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 53 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:37,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-21 05:17:37,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2023-12-21 05:17:37,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 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 05:17:37,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2023-12-21 05:17:37,787 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 34 [2023-12-21 05:17:37,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:37,787 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2023-12-21 05:17:37,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.1666666666666667) internal successors, (77), 66 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 05:17:37,787 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2023-12-21 05:17:37,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 05:17:37,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:37,787 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:37,792 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 05:17:37,991 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,SelfDestructingSolverStorable39 [2023-12-21 05:17:37,992 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:37,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:37,993 INFO L85 PathProgramCache]: Analyzing trace with hash -315748492, now seen corresponding path program 17 times [2023-12-21 05:17:37,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:37,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468945953] [2023-12-21 05:17:37,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:37,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 45 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:38,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:38,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468945953] [2023-12-21 05:17:38,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468945953] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:38,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870671275] [2023-12-21 05:17:38,507 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:17:38,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:38,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:38,508 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 05:17:38,510 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 05:17:38,541 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-21 05:17:38,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:38,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-21 05:17:38,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 55 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:39,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:39,687 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 55 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:39,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870671275] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:39,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:39,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 65 [2023-12-21 05:17:39,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327422244] [2023-12-21 05:17:39,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:39,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-21 05:17:39,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:39,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-21 05:17:39,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=765, Invalid=3395, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 05:17:39,689 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 65 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 65 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 05:17:40,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:40,023 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2023-12-21 05:17:40,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 05:17:40,023 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 65 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 34 [2023-12-21 05:17:40,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:40,024 INFO L225 Difference]: With dead ends: 63 [2023-12-21 05:17:40,024 INFO L226 Difference]: Without dead ends: 57 [2023-12-21 05:17:40,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 18 SyntacticMatches, 13 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3345 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1254, Invalid=5226, Unknown=0, NotChecked=0, Total=6480 [2023-12-21 05:17:40,025 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 85 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:40,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 38 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:40,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-21 05:17:40,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2023-12-21 05:17:40,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 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 05:17:40,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2023-12-21 05:17:40,048 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 34 [2023-12-21 05:17:40,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:40,048 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2023-12-21 05:17:40,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 65 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 05:17:40,048 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2023-12-21 05:17:40,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 05:17:40,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:40,049 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:40,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-21 05:17:40,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:40,254 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:40,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:40,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1981115596, now seen corresponding path program 18 times [2023-12-21 05:17:40,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:40,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110784617] [2023-12-21 05:17:40,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:40,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:40,741 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 56 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:40,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:40,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110784617] [2023-12-21 05:17:40,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110784617] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:40,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45304246] [2023-12-21 05:17:40,741 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:17:40,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:40,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:40,742 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 05:17:40,744 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 05:17:40,777 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-21 05:17:40,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:40,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 05:17:40,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:41,310 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:41,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:41,817 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:41,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45304246] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:41,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:41,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 64 [2023-12-21 05:17:41,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019284940] [2023-12-21 05:17:41,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:41,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-21 05:17:41,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:41,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-21 05:17:41,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=3269, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 05:17:41,818 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 64 states, 64 states have (on average 1.1875) internal successors, (76), 64 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 05:17:42,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:42,134 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2023-12-21 05:17:42,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 05:17:42,134 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.1875) internal successors, (76), 64 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 35 [2023-12-21 05:17:42,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:42,138 INFO L225 Difference]: With dead ends: 74 [2023-12-21 05:17:42,138 INFO L226 Difference]: Without dead ends: 52 [2023-12-21 05:17:42,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 22 SyntacticMatches, 12 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3143 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1164, Invalid=4688, Unknown=0, NotChecked=0, Total=5852 [2023-12-21 05:17:42,139 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 24 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:42,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 87 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:42,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-21 05:17:42,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-12-21 05:17:42,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 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 05:17:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2023-12-21 05:17:42,162 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 35 [2023-12-21 05:17:42,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:42,162 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2023-12-21 05:17:42,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.1875) internal successors, (76), 64 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 05:17:42,162 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2023-12-21 05:17:42,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 05:17:42,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:42,167 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:42,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-12-21 05:17:42,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:42,371 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:42,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:42,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1063179985, now seen corresponding path program 18 times [2023-12-21 05:17:42,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:42,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478209273] [2023-12-21 05:17:42,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:42,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:42,946 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 45 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:42,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:42,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478209273] [2023-12-21 05:17:42,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478209273] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:42,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160126563] [2023-12-21 05:17:42,946 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:17:42,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:42,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:42,947 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 05:17:42,949 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 05:17:42,994 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-21 05:17:42,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:42,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 05:17:42,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:43,548 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 55 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:43,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:44,086 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:44,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160126563] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:44,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:44,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 64 [2023-12-21 05:17:44,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383675445] [2023-12-21 05:17:44,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:44,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-21 05:17:44,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:44,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-21 05:17:44,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=773, Invalid=3259, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 05:17:44,088 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 64 states, 64 states have (on average 1.203125) internal successors, (77), 64 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 05:17:44,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:44,318 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2023-12-21 05:17:44,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 05:17:44,318 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.203125) internal successors, (77), 64 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 35 [2023-12-21 05:17:44,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:44,318 INFO L225 Difference]: With dead ends: 59 [2023-12-21 05:17:44,318 INFO L226 Difference]: Without dead ends: 53 [2023-12-21 05:17:44,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 21 SyntacticMatches, 13 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3184 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1203, Invalid=4649, Unknown=0, NotChecked=0, Total=5852 [2023-12-21 05:17:44,319 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 99 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:44,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 28 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:44,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-21 05:17:44,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-12-21 05:17:44,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 52 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 05:17:44,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2023-12-21 05:17:44,338 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 35 [2023-12-21 05:17:44,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:44,338 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2023-12-21 05:17:44,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.203125) internal successors, (77), 64 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 05:17:44,338 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2023-12-21 05:17:44,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 05:17:44,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:44,338 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:44,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-12-21 05:17:44,551 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,SelfDestructingSolverStorable42 [2023-12-21 05:17:44,552 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:44,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:44,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2055550267, now seen corresponding path program 19 times [2023-12-21 05:17:44,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:44,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240320596] [2023-12-21 05:17:44,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:44,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:45,034 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 55 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:45,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:45,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240320596] [2023-12-21 05:17:45,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240320596] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:45,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596759057] [2023-12-21 05:17:45,035 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:17:45,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:45,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:45,036 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 05:17:45,037 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 05:17:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:45,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-21 05:17:45,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:45,769 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 66 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:45,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:46,421 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 66 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:46,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596759057] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:46,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:46,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 71 [2023-12-21 05:17:46,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373397070] [2023-12-21 05:17:46,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:46,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-12-21 05:17:46,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:46,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-12-21 05:17:46,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=884, Invalid=4086, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 05:17:46,423 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 71 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 71 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 05:17:46,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:46,886 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2023-12-21 05:17:46,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 05:17:46,886 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 71 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 36 [2023-12-21 05:17:46,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:46,887 INFO L225 Difference]: With dead ends: 79 [2023-12-21 05:17:46,887 INFO L226 Difference]: Without dead ends: 56 [2023-12-21 05:17:46,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 16 SyntacticMatches, 15 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4049 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1418, Invalid=6238, Unknown=0, NotChecked=0, Total=7656 [2023-12-21 05:17:46,888 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 52 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:46,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 74 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:17:46,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-21 05:17:46,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2023-12-21 05:17:46,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 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 05:17:46,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2023-12-21 05:17:46,907 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 36 [2023-12-21 05:17:46,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:46,907 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2023-12-21 05:17:46,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 71 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 05:17:46,907 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2023-12-21 05:17:46,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 05:17:46,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:46,908 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:46,912 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 05:17:47,112 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,SelfDestructingSolverStorable43 [2023-12-21 05:17:47,112 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:47,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:47,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1818562245, now seen corresponding path program 19 times [2023-12-21 05:17:47,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:47,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230632240] [2023-12-21 05:17:47,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:47,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:47,690 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 55 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:47,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:47,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230632240] [2023-12-21 05:17:47,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230632240] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:47,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277010974] [2023-12-21 05:17:47,691 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:17:47,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:47,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:47,692 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 05:17:47,694 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 05:17:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:47,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-21 05:17:47,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 66 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:48,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 66 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:48,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277010974] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:48,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:48,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 70 [2023-12-21 05:17:48,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983395595] [2023-12-21 05:17:48,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:48,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-21 05:17:48,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:48,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-21 05:17:48,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=886, Invalid=3944, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 05:17:48,703 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 70 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 70 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 05:17:49,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:49,056 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2023-12-21 05:17:49,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 05:17:49,056 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 70 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 36 [2023-12-21 05:17:49,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:49,057 INFO L225 Difference]: With dead ends: 66 [2023-12-21 05:17:49,057 INFO L226 Difference]: Without dead ends: 60 [2023-12-21 05:17:49,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 18 SyntacticMatches, 14 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3918 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1446, Invalid=6036, Unknown=0, NotChecked=0, Total=7482 [2023-12-21 05:17:49,058 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 96 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:49,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 74 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:49,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-21 05:17:49,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2023-12-21 05:17:49,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 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 05:17:49,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2023-12-21 05:17:49,078 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 36 [2023-12-21 05:17:49,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:49,078 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2023-12-21 05:17:49,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 70 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 05:17:49,078 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2023-12-21 05:17:49,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 05:17:49,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:49,078 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:49,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-12-21 05:17:49,281 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,SelfDestructingSolverStorable44 [2023-12-21 05:17:49,282 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:49,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:49,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1323701683, now seen corresponding path program 20 times [2023-12-21 05:17:49,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:49,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746678537] [2023-12-21 05:17:49,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:49,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:49,808 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 67 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:49,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:49,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746678537] [2023-12-21 05:17:49,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746678537] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:49,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317553839] [2023-12-21 05:17:49,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:17:49,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:49,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:49,810 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 05:17:49,812 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 05:17:49,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:17:49,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:49,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 05:17:49,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:50,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:51,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317553839] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:51,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:51,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 69 [2023-12-21 05:17:51,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138724812] [2023-12-21 05:17:51,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:51,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-21 05:17:51,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:51,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-21 05:17:51,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=884, Invalid=3808, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 05:17:51,057 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 69 states, 69 states have (on average 1.173913043478261) internal successors, (81), 69 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 05:17:51,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:51,315 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2023-12-21 05:17:51,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 05:17:51,315 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.173913043478261) internal successors, (81), 69 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 37 [2023-12-21 05:17:51,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:51,316 INFO L225 Difference]: With dead ends: 78 [2023-12-21 05:17:51,316 INFO L226 Difference]: Without dead ends: 55 [2023-12-21 05:17:51,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 22 SyntacticMatches, 13 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3699 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1350, Invalid=5456, Unknown=0, NotChecked=0, Total=6806 [2023-12-21 05:17:51,317 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 43 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:51,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 55 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:51,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-21 05:17:51,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-12-21 05:17:51,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 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 05:17:51,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2023-12-21 05:17:51,337 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 37 [2023-12-21 05:17:51,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:51,339 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2023-12-21 05:17:51,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.173913043478261) internal successors, (81), 69 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 05:17:51,339 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2023-12-21 05:17:51,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 05:17:51,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:51,340 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:51,358 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 05:17:51,546 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,SelfDestructingSolverStorable45 [2023-12-21 05:17:51,546 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:51,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:51,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1495230444, now seen corresponding path program 20 times [2023-12-21 05:17:51,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:51,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309644862] [2023-12-21 05:17:51,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:51,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 55 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:52,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:52,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309644862] [2023-12-21 05:17:52,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309644862] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:52,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336509378] [2023-12-21 05:17:52,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:17:52,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:52,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:52,092 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 05:17:52,094 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 05:17:52,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:17:52,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:52,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 05:17:52,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:52,742 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 66 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:52,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:53,354 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:53,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336509378] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:53,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:53,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 69 [2023-12-21 05:17:53,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839702610] [2023-12-21 05:17:53,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:53,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-21 05:17:53,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:53,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-21 05:17:53,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=895, Invalid=3797, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 05:17:53,357 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 69 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 69 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 05:17:53,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:53,627 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2023-12-21 05:17:53,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 05:17:53,627 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 69 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 37 [2023-12-21 05:17:53,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:53,629 INFO L225 Difference]: With dead ends: 62 [2023-12-21 05:17:53,629 INFO L226 Difference]: Without dead ends: 56 [2023-12-21 05:17:53,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 21 SyntacticMatches, 14 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3743 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1393, Invalid=5413, Unknown=0, NotChecked=0, Total=6806 [2023-12-21 05:17:53,630 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 139 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:53,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 32 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-21 05:17:53,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-12-21 05:17:53,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 55 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 05:17:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2023-12-21 05:17:53,661 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 37 [2023-12-21 05:17:53,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:53,661 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2023-12-21 05:17:53,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 69 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 05:17:53,661 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2023-12-21 05:17:53,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 05:17:53,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:53,661 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:53,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-12-21 05:17:53,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:53,866 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:53,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:53,866 INFO L85 PathProgramCache]: Analyzing trace with hash 54238296, now seen corresponding path program 21 times [2023-12-21 05:17:53,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:53,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443463679] [2023-12-21 05:17:53,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:53,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:54,439 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 66 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:54,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:54,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443463679] [2023-12-21 05:17:54,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443463679] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:54,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580847091] [2023-12-21 05:17:54,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:17:54,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:54,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:54,440 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 05:17:54,475 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 05:17:54,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-21 05:17:54,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:54,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-21 05:17:54,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:55,250 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 78 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:55,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 78 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:55,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580847091] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:55,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:55,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 76 [2023-12-21 05:17:55,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271874927] [2023-12-21 05:17:55,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:55,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-12-21 05:17:55,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:55,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-12-21 05:17:55,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1013, Invalid=4687, Unknown=0, NotChecked=0, Total=5700 [2023-12-21 05:17:55,965 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 76 states, 76 states have (on average 1.144736842105263) internal successors, (87), 76 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 05:17:56,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:56,449 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2023-12-21 05:17:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 05:17:56,450 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.144736842105263) internal successors, (87), 76 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 38 [2023-12-21 05:17:56,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:56,450 INFO L225 Difference]: With dead ends: 83 [2023-12-21 05:17:56,450 INFO L226 Difference]: Without dead ends: 59 [2023-12-21 05:17:56,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 16 SyntacticMatches, 16 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4678 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1620, Invalid=7122, Unknown=0, NotChecked=0, Total=8742 [2023-12-21 05:17:56,452 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 49 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:56,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 63 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:17:56,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-21 05:17:56,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2023-12-21 05:17:56,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.087719298245614) internal successors, (62), 57 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 05:17:56,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2023-12-21 05:17:56,477 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 38 [2023-12-21 05:17:56,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:56,477 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2023-12-21 05:17:56,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.144736842105263) internal successors, (87), 76 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 05:17:56,477 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2023-12-21 05:17:56,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 05:17:56,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:56,477 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:56,482 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 05:17:56,682 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,SelfDestructingSolverStorable47 [2023-12-21 05:17:56,682 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:56,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:56,683 INFO L85 PathProgramCache]: Analyzing trace with hash 271245972, now seen corresponding path program 21 times [2023-12-21 05:17:56,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:56,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508297662] [2023-12-21 05:17:56,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:56,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:17:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 66 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:57,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:17:57,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508297662] [2023-12-21 05:17:57,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508297662] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:17:57,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351275910] [2023-12-21 05:17:57,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:17:57,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:17:57,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:17:57,267 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 05:17:57,276 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 05:17:57,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-21 05:17:57,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:57,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-21 05:17:57,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:58,100 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 78 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:58,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 78 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:58,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351275910] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:58,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:58,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 75 [2023-12-21 05:17:58,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636323258] [2023-12-21 05:17:58,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:58,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-12-21 05:17:58,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:58,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-12-21 05:17:58,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1016, Invalid=4534, Unknown=0, NotChecked=0, Total=5550 [2023-12-21 05:17:58,752 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 75 states, 75 states have (on average 1.16) internal successors, (87), 75 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 05:17:59,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:17:59,211 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2023-12-21 05:17:59,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 05:17:59,212 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.16) internal successors, (87), 75 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 38 [2023-12-21 05:17:59,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:17:59,212 INFO L225 Difference]: With dead ends: 69 [2023-12-21 05:17:59,212 INFO L226 Difference]: Without dead ends: 63 [2023-12-21 05:17:59,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 18 SyntacticMatches, 15 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4536 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1652, Invalid=6904, Unknown=0, NotChecked=0, Total=8556 [2023-12-21 05:17:59,213 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 120 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:17:59,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 54 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:17:59,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-21 05:17:59,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2023-12-21 05:17:59,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 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 05:17:59,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2023-12-21 05:17:59,236 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 38 [2023-12-21 05:17:59,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:17:59,236 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2023-12-21 05:17:59,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.16) internal successors, (87), 75 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 05:17:59,237 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2023-12-21 05:17:59,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 05:17:59,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:17:59,237 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:17:59,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-12-21 05:17:59,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-12-21 05:17:59,442 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:17:59,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:17:59,442 INFO L85 PathProgramCache]: Analyzing trace with hash -964156396, now seen corresponding path program 22 times [2023-12-21 05:17:59,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:17:59,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720221655] [2023-12-21 05:17:59,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:17:59,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:17:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:00,029 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 79 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:00,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:00,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720221655] [2023-12-21 05:18:00,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720221655] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:00,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453942163] [2023-12-21 05:18:00,030 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:18:00,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:00,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:00,044 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 05:18:00,066 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 05:18:00,104 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:18:00,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:00,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 05:18:00,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:00,625 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 91 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:00,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:01,141 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 91 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:01,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453942163] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:01,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:01,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 74 [2023-12-21 05:18:01,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780186345] [2023-12-21 05:18:01,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:01,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-21 05:18:01,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:01,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-21 05:18:01,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1014, Invalid=4388, Unknown=0, NotChecked=0, Total=5402 [2023-12-21 05:18:01,143 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 74 states, 74 states have (on average 1.162162162162162) internal successors, (86), 74 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 05:18:01,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:01,467 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2023-12-21 05:18:01,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 05:18:01,467 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.162162162162162) internal successors, (86), 74 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 39 [2023-12-21 05:18:01,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:01,468 INFO L225 Difference]: With dead ends: 82 [2023-12-21 05:18:01,468 INFO L226 Difference]: Without dead ends: 58 [2023-12-21 05:18:01,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 22 SyntacticMatches, 14 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4300 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1550, Invalid=6282, Unknown=0, NotChecked=0, Total=7832 [2023-12-21 05:18:01,470 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 40 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:01,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 57 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:18:01,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-21 05:18:01,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-12-21 05:18:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 57 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 05:18:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2023-12-21 05:18:01,525 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 39 [2023-12-21 05:18:01,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:01,525 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2023-12-21 05:18:01,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.162162162162162) internal successors, (86), 74 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 05:18:01,526 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2023-12-21 05:18:01,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 05:18:01,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:01,526 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:01,533 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 05:18:01,730 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,SelfDestructingSolverStorable49 [2023-12-21 05:18:01,730 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:01,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:01,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2041991951, now seen corresponding path program 22 times [2023-12-21 05:18:01,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:01,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070385424] [2023-12-21 05:18:01,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:01,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:02,435 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 66 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:02,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:02,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070385424] [2023-12-21 05:18:02,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070385424] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:02,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420294959] [2023-12-21 05:18:02,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:18:02,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:02,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:02,437 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 05:18:02,437 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 05:18:02,470 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:18:02,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:02,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 05:18:02,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 78 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:03,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:03,605 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 91 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:03,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420294959] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:03,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:03,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 74 [2023-12-21 05:18:03,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271906402] [2023-12-21 05:18:03,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:03,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-21 05:18:03,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:03,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-21 05:18:03,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1026, Invalid=4376, Unknown=0, NotChecked=0, Total=5402 [2023-12-21 05:18:03,607 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 74 states, 74 states have (on average 1.1756756756756757) internal successors, (87), 74 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 05:18:03,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:03,987 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2023-12-21 05:18:03,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 05:18:03,987 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.1756756756756757) internal successors, (87), 74 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 39 [2023-12-21 05:18:03,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:03,988 INFO L225 Difference]: With dead ends: 65 [2023-12-21 05:18:03,988 INFO L226 Difference]: Without dead ends: 59 [2023-12-21 05:18:03,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 21 SyntacticMatches, 15 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4347 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1597, Invalid=6235, Unknown=0, NotChecked=0, Total=7832 [2023-12-21 05:18:03,989 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 82 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:03,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 49 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:18:03,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-21 05:18:04,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-12-21 05:18:04,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 58 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 05:18:04,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2023-12-21 05:18:04,021 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 39 [2023-12-21 05:18:04,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:04,021 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2023-12-21 05:18:04,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.1756756756756757) internal successors, (87), 74 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 05:18:04,021 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2023-12-21 05:18:04,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 05:18:04,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:04,022 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:04,028 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 05:18:04,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:04,227 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:04,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:04,227 INFO L85 PathProgramCache]: Analyzing trace with hash 284500763, now seen corresponding path program 23 times [2023-12-21 05:18:04,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:04,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016670803] [2023-12-21 05:18:04,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:04,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:04,855 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 78 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:04,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:04,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016670803] [2023-12-21 05:18:04,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016670803] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:04,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668135454] [2023-12-21 05:18:04,856 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:18:04,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:04,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:04,857 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 05:18:04,859 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 05:18:04,894 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-12-21 05:18:04,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:04,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 05:18:04,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 91 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:05,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 91 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:06,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668135454] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:06,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:06,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 81 [2023-12-21 05:18:06,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671280839] [2023-12-21 05:18:06,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:06,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-12-21 05:18:06,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:06,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-12-21 05:18:06,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1151, Invalid=5329, Unknown=0, NotChecked=0, Total=6480 [2023-12-21 05:18:06,606 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 81 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 81 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:07,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:07,007 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2023-12-21 05:18:07,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 05:18:07,007 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 81 states have internal predecessors, (92), 0 states have call successors, (0), 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 05:18:07,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:07,011 INFO L225 Difference]: With dead ends: 87 [2023-12-21 05:18:07,011 INFO L226 Difference]: Without dead ends: 62 [2023-12-21 05:18:07,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 17 SyntacticMatches, 16 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5308 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1836, Invalid=8064, Unknown=0, NotChecked=0, Total=9900 [2023-12-21 05:18:07,013 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 44 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:07,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 46 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:18:07,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-21 05:18:07,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2023-12-21 05:18:07,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 60 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 05:18:07,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2023-12-21 05:18:07,040 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 40 [2023-12-21 05:18:07,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:07,040 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2023-12-21 05:18:07,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 81 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:07,040 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2023-12-21 05:18:07,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 05:18:07,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:07,045 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:07,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-12-21 05:18:07,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:07,250 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:07,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:07,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1522784613, now seen corresponding path program 23 times [2023-12-21 05:18:07,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:07,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625956125] [2023-12-21 05:18:07,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:07,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:07,960 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 78 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:07,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:07,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625956125] [2023-12-21 05:18:07,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625956125] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:07,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40104126] [2023-12-21 05:18:07,961 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:18:07,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:07,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:07,962 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 05:18:07,963 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 05:18:07,997 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-12-21 05:18:07,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:07,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 05:18:07,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:08,727 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 91 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:08,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 91 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:09,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40104126] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:09,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:09,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 80 [2023-12-21 05:18:09,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319797838] [2023-12-21 05:18:09,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:09,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-12-21 05:18:09,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:09,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-12-21 05:18:09,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=5165, Unknown=0, NotChecked=0, Total=6320 [2023-12-21 05:18:09,297 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 80 states, 80 states have (on average 1.15) internal successors, (92), 80 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:09,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:09,644 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2023-12-21 05:18:09,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 05:18:09,644 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.15) internal successors, (92), 80 states have internal predecessors, (92), 0 states have call successors, (0), 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 05:18:09,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:09,645 INFO L225 Difference]: With dead ends: 72 [2023-12-21 05:18:09,645 INFO L226 Difference]: Without dead ends: 66 [2023-12-21 05:18:09,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 18 SyntacticMatches, 16 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5199 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1872, Invalid=7830, Unknown=0, NotChecked=0, Total=9702 [2023-12-21 05:18:09,646 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 152 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:09,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 42 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:18:09,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-21 05:18:09,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2023-12-21 05:18:09,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 61 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 05:18:09,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2023-12-21 05:18:09,682 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 40 [2023-12-21 05:18:09,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:09,682 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2023-12-21 05:18:09,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.15) internal successors, (92), 80 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:09,683 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2023-12-21 05:18:09,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 05:18:09,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:09,683 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:09,688 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 05:18:09,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:09,888 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:09,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:09,888 INFO L85 PathProgramCache]: Analyzing trace with hash -744529683, now seen corresponding path program 24 times [2023-12-21 05:18:09,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:09,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809506928] [2023-12-21 05:18:09,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:09,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 92 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:10,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:10,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809506928] [2023-12-21 05:18:10,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809506928] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:10,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130673504] [2023-12-21 05:18:10,477 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:18:10,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:10,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:10,478 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 05:18:10,480 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 05:18:10,535 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-12-21 05:18:10,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:10,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-21 05:18:10,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:11,284 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 105 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:11,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 105 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:11,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130673504] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:11,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:11,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 79 [2023-12-21 05:18:11,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393847844] [2023-12-21 05:18:11,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:11,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-12-21 05:18:11,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:11,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-12-21 05:18:11,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=5009, Unknown=0, NotChecked=0, Total=6162 [2023-12-21 05:18:11,915 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 79 states, 79 states have (on average 1.1518987341772151) internal successors, (91), 79 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 05:18:12,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:12,291 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2023-12-21 05:18:12,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 05:18:12,291 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.1518987341772151) internal successors, (91), 79 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 41 [2023-12-21 05:18:12,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:12,291 INFO L225 Difference]: With dead ends: 86 [2023-12-21 05:18:12,291 INFO L226 Difference]: Without dead ends: 61 [2023-12-21 05:18:12,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 21 SyntacticMatches, 16 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4991 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1764, Invalid=7166, Unknown=0, NotChecked=0, Total=8930 [2023-12-21 05:18:12,292 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 35 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:12,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 60 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:18:12,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-21 05:18:12,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-12-21 05:18:12,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0666666666666667) internal successors, (64), 60 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 05:18:12,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2023-12-21 05:18:12,320 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 41 [2023-12-21 05:18:12,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:12,320 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2023-12-21 05:18:12,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.1518987341772151) internal successors, (91), 79 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 05:18:12,320 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2023-12-21 05:18:12,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 05:18:12,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:12,320 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:12,327 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 05:18:12,525 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,SelfDestructingSolverStorable53 [2023-12-21 05:18:12,526 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:12,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:12,526 INFO L85 PathProgramCache]: Analyzing trace with hash 146895220, now seen corresponding path program 24 times [2023-12-21 05:18:12,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:12,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067751614] [2023-12-21 05:18:12,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:12,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 78 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:13,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:13,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067751614] [2023-12-21 05:18:13,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067751614] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:13,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303249502] [2023-12-21 05:18:13,070 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:18:13,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:13,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:13,071 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 05:18:13,073 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 05:18:13,136 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-12-21 05:18:13,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:13,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-21 05:18:13,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 91 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:13,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:14,401 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 105 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:14,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303249502] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:14,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:14,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 79 [2023-12-21 05:18:14,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22853131] [2023-12-21 05:18:14,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:14,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-12-21 05:18:14,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:14,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-12-21 05:18:14,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1166, Invalid=4996, Unknown=0, NotChecked=0, Total=6162 [2023-12-21 05:18:14,403 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 79 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 79 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:14,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:14,712 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2023-12-21 05:18:14,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 05:18:14,712 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 79 states have internal predecessors, (92), 0 states have call successors, (0), 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 05:18:14,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:14,713 INFO L225 Difference]: With dead ends: 68 [2023-12-21 05:18:14,713 INFO L226 Difference]: Without dead ends: 62 [2023-12-21 05:18:14,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 21 SyntacticMatches, 16 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4996 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1815, Invalid=7115, Unknown=0, NotChecked=0, Total=8930 [2023-12-21 05:18:14,714 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 83 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:14,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 38 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:18:14,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-21 05:18:14,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-12-21 05:18:14,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 61 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 05:18:14,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2023-12-21 05:18:14,755 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 41 [2023-12-21 05:18:14,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:14,755 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2023-12-21 05:18:14,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 79 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:14,756 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2023-12-21 05:18:14,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 05:18:14,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:14,756 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:14,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-12-21 05:18:14,961 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,SelfDestructingSolverStorable54 [2023-12-21 05:18:14,961 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:14,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:14,961 INFO L85 PathProgramCache]: Analyzing trace with hash -579473672, now seen corresponding path program 25 times [2023-12-21 05:18:14,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:14,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814539563] [2023-12-21 05:18:14,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:14,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:15,668 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 91 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:15,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:15,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814539563] [2023-12-21 05:18:15,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814539563] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:15,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914378739] [2023-12-21 05:18:15,668 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:18:15,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:15,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:15,669 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 05:18:15,673 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 05:18:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:15,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-21 05:18:15,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 105 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:16,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 105 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:17,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914378739] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:17,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:17,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 86 [2023-12-21 05:18:17,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739891668] [2023-12-21 05:18:17,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:17,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-12-21 05:18:17,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:17,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-12-21 05:18:17,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1298, Invalid=6012, Unknown=0, NotChecked=0, Total=7310 [2023-12-21 05:18:17,089 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 86 states, 86 states have (on average 1.127906976744186) internal successors, (97), 86 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:17,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:17,546 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2023-12-21 05:18:17,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 05:18:17,546 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.127906976744186) internal successors, (97), 86 states have internal predecessors, (97), 0 states have call successors, (0), 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 05:18:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:17,546 INFO L225 Difference]: With dead ends: 91 [2023-12-21 05:18:17,546 INFO L226 Difference]: Without dead ends: 65 [2023-12-21 05:18:17,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 16 SyntacticMatches, 18 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6071 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2066, Invalid=9064, Unknown=0, NotChecked=0, Total=11130 [2023-12-21 05:18:17,547 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 41 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:17,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 49 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:18:17,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-21 05:18:17,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2023-12-21 05:18:17,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 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 05:18:17,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2023-12-21 05:18:17,584 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 42 [2023-12-21 05:18:17,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:17,584 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2023-12-21 05:18:17,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.127906976744186) internal successors, (97), 86 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:17,584 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2023-12-21 05:18:17,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 05:18:17,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:17,584 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:17,597 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 05:18:17,789 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,SelfDestructingSolverStorable55 [2023-12-21 05:18:17,789 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:17,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:17,789 INFO L85 PathProgramCache]: Analyzing trace with hash -715334220, now seen corresponding path program 25 times [2023-12-21 05:18:17,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:17,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042454439] [2023-12-21 05:18:17,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:17,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 91 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:18,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:18,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042454439] [2023-12-21 05:18:18,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042454439] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:18,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715241453] [2023-12-21 05:18:18,476 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:18:18,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:18,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:18,477 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 05:18:18,477 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 05:18:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:18,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-21 05:18:18,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 105 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:19,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 105 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:19,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715241453] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:19,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:19,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 85 [2023-12-21 05:18:19,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462708742] [2023-12-21 05:18:19,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:19,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2023-12-21 05:18:19,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:19,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2023-12-21 05:18:19,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1303, Invalid=5837, Unknown=0, NotChecked=0, Total=7140 [2023-12-21 05:18:19,806 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 85 states, 85 states have (on average 1.1411764705882352) internal successors, (97), 85 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:20,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:20,332 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2023-12-21 05:18:20,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 05:18:20,332 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.1411764705882352) internal successors, (97), 85 states have internal predecessors, (97), 0 states have call successors, (0), 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 05:18:20,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:20,332 INFO L225 Difference]: With dead ends: 75 [2023-12-21 05:18:20,333 INFO L226 Difference]: Without dead ends: 69 [2023-12-21 05:18:20,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 18 SyntacticMatches, 17 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5907 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2106, Invalid=8814, Unknown=0, NotChecked=0, Total=10920 [2023-12-21 05:18:20,334 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 104 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:20,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 30 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:18:20,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-21 05:18:20,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2023-12-21 05:18:20,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.078125) internal successors, (69), 64 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 05:18:20,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2023-12-21 05:18:20,376 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 42 [2023-12-21 05:18:20,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:20,377 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2023-12-21 05:18:20,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.1411764705882352) internal successors, (97), 85 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:20,377 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2023-12-21 05:18:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 05:18:20,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:20,377 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:20,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-12-21 05:18:20,582 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,SelfDestructingSolverStorable56 [2023-12-21 05:18:20,582 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:20,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:20,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1483371276, now seen corresponding path program 26 times [2023-12-21 05:18:20,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:20,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536225106] [2023-12-21 05:18:20,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:20,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 106 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:21,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:21,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536225106] [2023-12-21 05:18:21,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536225106] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:21,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907995956] [2023-12-21 05:18:21,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:18:21,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:21,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:21,173 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 05:18:21,178 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 05:18:21,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:18:21,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:21,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 05:18:21,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:22,116 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 120 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:22,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:22,938 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 120 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:22,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907995956] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:22,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:22,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 84 [2023-12-21 05:18:22,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831792607] [2023-12-21 05:18:22,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:22,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2023-12-21 05:18:22,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:22,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2023-12-21 05:18:22,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1301, Invalid=5671, Unknown=0, NotChecked=0, Total=6972 [2023-12-21 05:18:22,940 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 84 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 84 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 05:18:23,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:23,353 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2023-12-21 05:18:23,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 05:18:23,354 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 84 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 43 [2023-12-21 05:18:23,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:23,354 INFO L225 Difference]: With dead ends: 90 [2023-12-21 05:18:23,354 INFO L226 Difference]: Without dead ends: 64 [2023-12-21 05:18:23,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 22 SyntacticMatches, 16 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5637 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1992, Invalid=8108, Unknown=0, NotChecked=0, Total=10100 [2023-12-21 05:18:23,355 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 43 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:23,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 60 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:18:23,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-21 05:18:23,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-12-21 05:18:23,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 63 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 05:18:23,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2023-12-21 05:18:23,385 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 43 [2023-12-21 05:18:23,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:23,385 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2023-12-21 05:18:23,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 84 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 05:18:23,385 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2023-12-21 05:18:23,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 05:18:23,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:23,386 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:23,392 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 05:18:23,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-12-21 05:18:23,590 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:23,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:23,591 INFO L85 PathProgramCache]: Analyzing trace with hash 325585681, now seen corresponding path program 26 times [2023-12-21 05:18:23,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:23,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551147074] [2023-12-21 05:18:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:23,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:24,418 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 91 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:24,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:24,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551147074] [2023-12-21 05:18:24,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551147074] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:24,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833764530] [2023-12-21 05:18:24,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:18:24,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:24,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:24,419 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 05:18:24,421 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 05:18:24,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:18:24,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:24,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 05:18:24,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:25,260 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 105 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:25,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:26,082 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 120 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:26,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833764530] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:26,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:26,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 84 [2023-12-21 05:18:26,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624113800] [2023-12-21 05:18:26,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:26,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2023-12-21 05:18:26,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:26,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2023-12-21 05:18:26,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1315, Invalid=5657, Unknown=0, NotChecked=0, Total=6972 [2023-12-21 05:18:26,084 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 84 states, 84 states have (on average 1.1547619047619047) internal successors, (97), 84 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:26,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:26,490 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2023-12-21 05:18:26,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 05:18:26,491 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.1547619047619047) internal successors, (97), 84 states have internal predecessors, (97), 0 states have call successors, (0), 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 05:18:26,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:26,491 INFO L225 Difference]: With dead ends: 71 [2023-12-21 05:18:26,491 INFO L226 Difference]: Without dead ends: 65 [2023-12-21 05:18:26,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 21 SyntacticMatches, 17 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5690 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2047, Invalid=8053, Unknown=0, NotChecked=0, Total=10100 [2023-12-21 05:18:26,493 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 142 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:26,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 39 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:18:26,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-21 05:18:26,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-12-21 05:18:26,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.0625) internal successors, (68), 64 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 05:18:26,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2023-12-21 05:18:26,545 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 43 [2023-12-21 05:18:26,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:26,545 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2023-12-21 05:18:26,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.1547619047619047) internal successors, (97), 84 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:26,545 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2023-12-21 05:18:26,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-21 05:18:26,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:26,546 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:26,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-12-21 05:18:26,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-12-21 05:18:26,750 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:26,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:26,751 INFO L85 PathProgramCache]: Analyzing trace with hash 664963323, now seen corresponding path program 27 times [2023-12-21 05:18:26,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:26,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457844983] [2023-12-21 05:18:26,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:26,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:27,480 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 105 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:27,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:27,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457844983] [2023-12-21 05:18:27,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457844983] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:27,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450066781] [2023-12-21 05:18:27,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:18:27,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:27,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:27,482 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 05:18:27,483 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 05:18:27,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-12-21 05:18:27,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:27,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-21 05:18:27,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 120 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:28,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 120 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:29,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450066781] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:29,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:29,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 91 [2023-12-21 05:18:29,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278183196] [2023-12-21 05:18:29,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:29,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-12-21 05:18:29,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:29,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-12-21 05:18:29,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1454, Invalid=6736, Unknown=0, NotChecked=0, Total=8190 [2023-12-21 05:18:29,484 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 91 states, 91 states have (on average 1.120879120879121) internal successors, (102), 91 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:29,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:29,962 INFO L93 Difference]: Finished difference Result 95 states and 101 transitions. [2023-12-21 05:18:29,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 05:18:29,963 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 1.120879120879121) internal successors, (102), 91 states have internal predecessors, (102), 0 states have call successors, (0), 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 05:18:29,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:29,964 INFO L225 Difference]: With dead ends: 95 [2023-12-21 05:18:29,964 INFO L226 Difference]: Without dead ends: 68 [2023-12-21 05:18:29,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 17 SyntacticMatches, 18 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6785 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2310, Invalid=10122, Unknown=0, NotChecked=0, Total=12432 [2023-12-21 05:18:29,965 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 53 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:29,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 67 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:18:29,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-21 05:18:30,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2023-12-21 05:18:30,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 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 05:18:30,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2023-12-21 05:18:30,028 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 44 [2023-12-21 05:18:30,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:30,028 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2023-12-21 05:18:30,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 1.120879120879121) internal successors, (102), 91 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:30,029 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2023-12-21 05:18:30,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-21 05:18:30,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:30,029 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:30,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2023-12-21 05:18:30,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:30,234 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:30,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:30,234 INFO L85 PathProgramCache]: Analyzing trace with hash 803664891, now seen corresponding path program 27 times [2023-12-21 05:18:30,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:30,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086658592] [2023-12-21 05:18:30,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:30,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 105 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:31,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:31,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086658592] [2023-12-21 05:18:31,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086658592] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:31,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284627972] [2023-12-21 05:18:31,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:18:31,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:31,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:31,091 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 05:18:31,113 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 05:18:31,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-12-21 05:18:31,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:31,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-21 05:18:31,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:32,002 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 120 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:32,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:32,907 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 120 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:32,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284627972] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:32,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:32,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 90 [2023-12-21 05:18:32,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658707360] [2023-12-21 05:18:32,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:32,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2023-12-21 05:18:32,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:32,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2023-12-21 05:18:32,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1460, Invalid=6550, Unknown=0, NotChecked=0, Total=8010 [2023-12-21 05:18:32,909 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 90 states, 90 states have (on average 1.1333333333333333) internal successors, (102), 90 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:33,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:33,467 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2023-12-21 05:18:33,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 05:18:33,467 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.1333333333333333) internal successors, (102), 90 states have internal predecessors, (102), 0 states have call successors, (0), 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 05:18:33,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:33,468 INFO L225 Difference]: With dead ends: 78 [2023-12-21 05:18:33,468 INFO L226 Difference]: Without dead ends: 72 [2023-12-21 05:18:33,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 18 SyntacticMatches, 18 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6660 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2354, Invalid=9856, Unknown=0, NotChecked=0, Total=12210 [2023-12-21 05:18:33,469 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 75 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:33,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 62 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:18:33,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-21 05:18:33,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2023-12-21 05:18:33,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 67 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 05:18:33,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2023-12-21 05:18:33,503 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 44 [2023-12-21 05:18:33,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:33,503 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2023-12-21 05:18:33,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.1333333333333333) internal successors, (102), 90 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:33,503 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2023-12-21 05:18:33,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-21 05:18:33,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:33,503 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:33,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2023-12-21 05:18:33,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:33,708 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:33,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:33,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1639039091, now seen corresponding path program 28 times [2023-12-21 05:18:33,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:33,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812313680] [2023-12-21 05:18:33,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:33,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:34,405 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 121 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:34,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:34,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812313680] [2023-12-21 05:18:34,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812313680] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:34,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985982784] [2023-12-21 05:18:34,405 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:18:34,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:34,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:34,406 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 05:18:34,407 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 05:18:34,442 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:18:34,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:34,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 05:18:34,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 136 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:35,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 136 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:36,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985982784] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:36,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:36,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 89 [2023-12-21 05:18:36,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119355606] [2023-12-21 05:18:36,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:36,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2023-12-21 05:18:36,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:36,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2023-12-21 05:18:36,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1458, Invalid=6374, Unknown=0, NotChecked=0, Total=7832 [2023-12-21 05:18:36,133 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 89 states, 89 states have (on average 1.1348314606741574) internal successors, (101), 89 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 05:18:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:36,541 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2023-12-21 05:18:36,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 05:18:36,542 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.1348314606741574) internal successors, (101), 89 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 45 [2023-12-21 05:18:36,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:36,543 INFO L225 Difference]: With dead ends: 94 [2023-12-21 05:18:36,543 INFO L226 Difference]: Without dead ends: 67 [2023-12-21 05:18:36,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 21 SyntacticMatches, 18 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6424 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2234, Invalid=9108, Unknown=0, NotChecked=0, Total=11342 [2023-12-21 05:18:36,544 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 36 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:36,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 68 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:18:36,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-12-21 05:18:36,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-12-21 05:18:36,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0606060606060606) internal successors, (70), 66 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 05:18:36,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2023-12-21 05:18:36,579 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 45 [2023-12-21 05:18:36,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:36,579 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2023-12-21 05:18:36,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.1348314606741574) internal successors, (101), 89 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 05:18:36,579 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2023-12-21 05:18:36,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-21 05:18:36,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:36,580 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:36,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2023-12-21 05:18:36,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:36,781 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:36,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:36,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1451359532, now seen corresponding path program 28 times [2023-12-21 05:18:36,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:36,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067095668] [2023-12-21 05:18:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:36,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 105 proven. 151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:37,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:37,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067095668] [2023-12-21 05:18:37,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067095668] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:37,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029774983] [2023-12-21 05:18:37,651 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:18:37,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:37,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:37,652 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 05:18:37,654 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 05:18:37,698 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:18:37,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:37,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 05:18:37,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:38,627 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 120 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:38,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 136 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:39,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029774983] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:39,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:39,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 89 [2023-12-21 05:18:39,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489176946] [2023-12-21 05:18:39,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:39,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2023-12-21 05:18:39,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:39,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2023-12-21 05:18:39,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1473, Invalid=6359, Unknown=0, NotChecked=0, Total=7832 [2023-12-21 05:18:39,562 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 89 states, 89 states have (on average 1.146067415730337) internal successors, (102), 89 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:39,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:39,932 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2023-12-21 05:18:39,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 05:18:39,932 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.146067415730337) internal successors, (102), 89 states have internal predecessors, (102), 0 states have call successors, (0), 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 05:18:39,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:39,932 INFO L225 Difference]: With dead ends: 74 [2023-12-21 05:18:39,932 INFO L226 Difference]: Without dead ends: 68 [2023-12-21 05:18:39,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 21 SyntacticMatches, 18 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6429 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2293, Invalid=9049, Unknown=0, NotChecked=0, Total=11342 [2023-12-21 05:18:39,933 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 148 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:39,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 33 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:18:39,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-21 05:18:39,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-12-21 05:18:39,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0597014925373134) internal successors, (71), 67 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 05:18:39,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2023-12-21 05:18:39,979 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 45 [2023-12-21 05:18:39,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:39,979 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2023-12-21 05:18:39,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.146067415730337) internal successors, (102), 89 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:39,980 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2023-12-21 05:18:39,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-21 05:18:39,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:39,980 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:39,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2023-12-21 05:18:40,185 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,SelfDestructingSolverStorable62 [2023-12-21 05:18:40,185 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:40,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:40,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1414236568, now seen corresponding path program 29 times [2023-12-21 05:18:40,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:40,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420430660] [2023-12-21 05:18:40,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:40,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 120 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:40,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:40,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420430660] [2023-12-21 05:18:40,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420430660] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:40,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866823018] [2023-12-21 05:18:40,807 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:18:40,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:40,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:40,808 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 05:18:40,810 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 05:18:40,845 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-12-21 05:18:40,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:40,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-21 05:18:40,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:41,761 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 136 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:41,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:42,600 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 136 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:42,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866823018] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:42,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:42,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 96 [2023-12-21 05:18:42,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395200366] [2023-12-21 05:18:42,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:42,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 05:18:42,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:42,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 05:18:42,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1619, Invalid=7501, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 05:18:42,607 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand has 96 states, 96 states have (on average 1.1145833333333333) internal successors, (107), 96 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 05:18:43,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:43,170 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2023-12-21 05:18:43,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-21 05:18:43,171 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.1145833333333333) internal successors, (107), 96 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) Word has length 46 [2023-12-21 05:18:43,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:43,171 INFO L225 Difference]: With dead ends: 99 [2023-12-21 05:18:43,171 INFO L226 Difference]: Without dead ends: 71 [2023-12-21 05:18:43,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 16 SyntacticMatches, 20 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7644 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2568, Invalid=11238, Unknown=0, NotChecked=0, Total=13806 [2023-12-21 05:18:43,173 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 37 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:43,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 67 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:18:43,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-21 05:18:43,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2023-12-21 05:18:43,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 69 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 05:18:43,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2023-12-21 05:18:43,218 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 46 [2023-12-21 05:18:43,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:43,218 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2023-12-21 05:18:43,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.1145833333333333) internal successors, (107), 96 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 05:18:43,218 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2023-12-21 05:18:43,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-21 05:18:43,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:43,218 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:43,227 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 05:18:43,423 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,SelfDestructingSolverStorable63 [2023-12-21 05:18:43,423 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:43,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:43,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1474429140, now seen corresponding path program 29 times [2023-12-21 05:18:43,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:43,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324076757] [2023-12-21 05:18:43,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:43,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 120 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:44,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:44,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324076757] [2023-12-21 05:18:44,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324076757] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:44,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420209631] [2023-12-21 05:18:44,296 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:18:44,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:44,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:44,297 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 05:18:44,299 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 05:18:44,335 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-12-21 05:18:44,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:44,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-21 05:18:44,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:45,172 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 136 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:45,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:45,997 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 136 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:45,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420209631] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:45,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:45,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 95 [2023-12-21 05:18:45,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358936891] [2023-12-21 05:18:45,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:45,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2023-12-21 05:18:45,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:45,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2023-12-21 05:18:45,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1626, Invalid=7304, Unknown=0, NotChecked=0, Total=8930 [2023-12-21 05:18:45,999 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 95 states, 95 states have (on average 1.1263157894736842) internal successors, (107), 95 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 05:18:46,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:46,552 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2023-12-21 05:18:46,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-21 05:18:46,552 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.1263157894736842) internal successors, (107), 95 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) Word has length 46 [2023-12-21 05:18:46,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:46,553 INFO L225 Difference]: With dead ends: 81 [2023-12-21 05:18:46,553 INFO L226 Difference]: Without dead ends: 75 [2023-12-21 05:18:46,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 18 SyntacticMatches, 19 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7458 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2616, Invalid=10956, Unknown=0, NotChecked=0, Total=13572 [2023-12-21 05:18:46,554 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 185 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:46,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 74 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:18:46,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-21 05:18:46,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2023-12-21 05:18:46,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 70 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 05:18:46,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2023-12-21 05:18:46,593 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 46 [2023-12-21 05:18:46,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:46,593 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2023-12-21 05:18:46,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.1263157894736842) internal successors, (107), 95 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 05:18:46,594 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2023-12-21 05:18:46,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 05:18:46,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:46,594 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:46,599 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 05:18:46,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:46,799 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:46,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:46,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1974783444, now seen corresponding path program 30 times [2023-12-21 05:18:46,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:46,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355123834] [2023-12-21 05:18:46,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:46,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 137 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:47,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:47,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355123834] [2023-12-21 05:18:47,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355123834] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:47,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910824815] [2023-12-21 05:18:47,497 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:18:47,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:47,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:47,498 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 05:18:47,500 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 05:18:47,550 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-12-21 05:18:47,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:47,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 05:18:47,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:48,634 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 153 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:48,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:49,508 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 153 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:49,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910824815] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:49,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:49,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 39] total 94 [2023-12-21 05:18:49,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101790358] [2023-12-21 05:18:49,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:49,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2023-12-21 05:18:49,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:49,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2023-12-21 05:18:49,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1624, Invalid=7118, Unknown=0, NotChecked=0, Total=8742 [2023-12-21 05:18:49,510 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 94 states, 94 states have (on average 1.127659574468085) internal successors, (106), 94 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 05:18:49,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:49,886 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2023-12-21 05:18:49,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 05:18:49,886 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.127659574468085) internal successors, (106), 94 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 47 [2023-12-21 05:18:49,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:49,886 INFO L225 Difference]: With dead ends: 98 [2023-12-21 05:18:49,887 INFO L226 Difference]: Without dead ends: 70 [2023-12-21 05:18:49,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 22 SyntacticMatches, 18 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7154 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2490, Invalid=10166, Unknown=0, NotChecked=0, Total=12656 [2023-12-21 05:18:49,889 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 42 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:49,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 59 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:18:49,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-21 05:18:49,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-12-21 05:18:49,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 69 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 05:18:49,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2023-12-21 05:18:49,935 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 47 [2023-12-21 05:18:49,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:49,936 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2023-12-21 05:18:49,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 1.127659574468085) internal successors, (106), 94 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 05:18:49,936 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2023-12-21 05:18:49,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 05:18:49,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:49,936 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:49,940 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 05:18:50,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:50,140 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:50,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:50,141 INFO L85 PathProgramCache]: Analyzing trace with hash -852496079, now seen corresponding path program 30 times [2023-12-21 05:18:50,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:50,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907527466] [2023-12-21 05:18:50,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:50,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:51,126 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 120 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:51,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:51,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907527466] [2023-12-21 05:18:51,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907527466] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:51,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185247975] [2023-12-21 05:18:51,127 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:18:51,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:51,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:51,128 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 05:18:51,129 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 05:18:51,168 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-12-21 05:18:51,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:18:51,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 05:18:51,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:52,229 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 136 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:52,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:53,285 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 153 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:53,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185247975] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:53,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:53,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 39] total 94 [2023-12-21 05:18:53,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192521112] [2023-12-21 05:18:53,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:53,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2023-12-21 05:18:53,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:53,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2023-12-21 05:18:53,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1640, Invalid=7102, Unknown=0, NotChecked=0, Total=8742 [2023-12-21 05:18:53,289 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand has 94 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 94 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 05:18:53,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:53,794 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2023-12-21 05:18:53,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 05:18:53,814 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 94 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) Word has length 47 [2023-12-21 05:18:53,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:53,815 INFO L225 Difference]: With dead ends: 77 [2023-12-21 05:18:53,815 INFO L226 Difference]: Without dead ends: 71 [2023-12-21 05:18:53,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 21 SyntacticMatches, 19 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7213 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2553, Invalid=10103, Unknown=0, NotChecked=0, Total=12656 [2023-12-21 05:18:53,817 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 75 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:53,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 42 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:18:53,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-21 05:18:53,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-12-21 05:18:53,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 70 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 05:18:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2023-12-21 05:18:53,859 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 47 [2023-12-21 05:18:53,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:53,859 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2023-12-21 05:18:53,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 94 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 05:18:53,859 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2023-12-21 05:18:53,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 05:18:53,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:53,859 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:53,866 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 05:18:54,064 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,SelfDestructingSolverStorable66 [2023-12-21 05:18:54,065 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:54,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:54,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1495832869, now seen corresponding path program 31 times [2023-12-21 05:18:54,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:54,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913559932] [2023-12-21 05:18:54,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:54,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:54,788 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 136 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:54,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:54,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913559932] [2023-12-21 05:18:54,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913559932] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:54,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700378305] [2023-12-21 05:18:54,788 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:18:54,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:54,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:54,790 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 05:18:54,808 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 05:18:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:54,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-21 05:18:54,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:56,079 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 153 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:56,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:18:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 153 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:57,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700378305] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:18:57,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:18:57,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 101 [2023-12-21 05:18:57,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804694523] [2023-12-21 05:18:57,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:18:57,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2023-12-21 05:18:57,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:18:57,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2023-12-21 05:18:57,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1793, Invalid=8307, Unknown=0, NotChecked=0, Total=10100 [2023-12-21 05:18:57,240 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 101 states, 101 states have (on average 1.108910891089109) internal successors, (112), 101 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:57,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:18:57,819 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2023-12-21 05:18:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-21 05:18:57,819 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.108910891089109) internal successors, (112), 101 states have internal predecessors, (112), 0 states have call successors, (0), 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 05:18:57,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:18:57,820 INFO L225 Difference]: With dead ends: 103 [2023-12-21 05:18:57,820 INFO L226 Difference]: Without dead ends: 74 [2023-12-21 05:18:57,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 16 SyntacticMatches, 21 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8498 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2840, Invalid=12412, Unknown=0, NotChecked=0, Total=15252 [2023-12-21 05:18:57,821 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 41 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:18:57,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 49 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:18:57,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-21 05:18:57,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2023-12-21 05:18:57,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 72 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 05:18:57,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2023-12-21 05:18:57,871 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 48 [2023-12-21 05:18:57,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:18:57,871 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2023-12-21 05:18:57,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.108910891089109) internal successors, (112), 101 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:18:57,871 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2023-12-21 05:18:57,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 05:18:57,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:18:57,871 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:18:57,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2023-12-21 05:18:58,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-12-21 05:18:58,075 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:18:58,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:18:58,075 INFO L85 PathProgramCache]: Analyzing trace with hash 425548123, now seen corresponding path program 31 times [2023-12-21 05:18:58,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:18:58,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976439733] [2023-12-21 05:18:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:18:58,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:18:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 136 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:58,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:18:58,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976439733] [2023-12-21 05:18:58,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976439733] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:18:58,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796439222] [2023-12-21 05:18:58,911 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:18:58,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:18:58,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:18:58,912 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 05:18:58,914 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 05:18:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:18:58,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-21 05:18:58,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:18:59,778 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 153 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:18:59,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:00,582 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 153 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:00,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796439222] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:00,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:00,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 100 [2023-12-21 05:19:00,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22977164] [2023-12-21 05:19:00,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:00,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2023-12-21 05:19:00,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:00,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2023-12-21 05:19:00,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1801, Invalid=8099, Unknown=0, NotChecked=0, Total=9900 [2023-12-21 05:19:00,585 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 100 states, 100 states have (on average 1.12) internal successors, (112), 100 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:01,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:01,098 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2023-12-21 05:19:01,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-21 05:19:01,098 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.12) internal successors, (112), 100 states have internal predecessors, (112), 0 states have call successors, (0), 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 05:19:01,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:01,099 INFO L225 Difference]: With dead ends: 84 [2023-12-21 05:19:01,099 INFO L226 Difference]: Without dead ends: 78 [2023-12-21 05:19:01,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 18 SyntacticMatches, 20 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8301 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2892, Invalid=12114, Unknown=0, NotChecked=0, Total=15006 [2023-12-21 05:19:01,100 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 108 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:01,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 50 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:19:01,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-21 05:19:01,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2023-12-21 05:19:01,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 73 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 05:19:01,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2023-12-21 05:19:01,143 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 48 [2023-12-21 05:19:01,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:01,143 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2023-12-21 05:19:01,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.12) internal successors, (112), 100 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:01,143 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2023-12-21 05:19:01,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 05:19:01,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:01,143 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:01,150 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 05:19:01,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:01,348 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:01,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:01,349 INFO L85 PathProgramCache]: Analyzing trace with hash -475757011, now seen corresponding path program 32 times [2023-12-21 05:19:01,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:01,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500274616] [2023-12-21 05:19:01,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:01,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 154 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:02,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:02,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500274616] [2023-12-21 05:19:02,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500274616] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:02,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742877707] [2023-12-21 05:19:02,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:19:02,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:02,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:02,191 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 05:19:02,194 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 05:19:02,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:19:02,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:02,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-21 05:19:02,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:03,107 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 171 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:03,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 171 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:03,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742877707] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:03,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:03,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 99 [2023-12-21 05:19:03,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364836121] [2023-12-21 05:19:03,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:03,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2023-12-21 05:19:03,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:03,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2023-12-21 05:19:03,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1799, Invalid=7903, Unknown=0, NotChecked=0, Total=9702 [2023-12-21 05:19:03,903 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 99 states, 99 states have (on average 1.121212121212121) internal successors, (111), 99 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 05:19:04,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:04,275 INFO L93 Difference]: Finished difference Result 102 states and 106 transitions. [2023-12-21 05:19:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-21 05:19:04,275 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.121212121212121) internal successors, (111), 99 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 49 [2023-12-21 05:19:04,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:04,276 INFO L225 Difference]: With dead ends: 102 [2023-12-21 05:19:04,276 INFO L226 Difference]: Without dead ends: 73 [2023-12-21 05:19:04,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 21 SyntacticMatches, 20 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8037 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2760, Invalid=11282, Unknown=0, NotChecked=0, Total=14042 [2023-12-21 05:19:04,277 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 30 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:04,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 41 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:19:04,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-21 05:19:04,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-12-21 05:19:04,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0555555555555556) internal successors, (76), 72 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 05:19:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2023-12-21 05:19:04,330 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 49 [2023-12-21 05:19:04,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:04,330 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2023-12-21 05:19:04,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 1.121212121212121) internal successors, (111), 99 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 05:19:04,330 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2023-12-21 05:19:04,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 05:19:04,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:04,330 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:04,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2023-12-21 05:19:04,535 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,SelfDestructingSolverStorable69 [2023-12-21 05:19:04,536 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:04,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:04,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2017479732, now seen corresponding path program 32 times [2023-12-21 05:19:04,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:04,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314582017] [2023-12-21 05:19:04,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:04,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 136 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:05,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:05,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314582017] [2023-12-21 05:19:05,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314582017] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:05,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322468680] [2023-12-21 05:19:05,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:19:05,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:05,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:05,494 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 05:19:05,495 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 05:19:05,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:19:05,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:05,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-21 05:19:05,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 153 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:06,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:07,769 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 171 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:07,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322468680] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:07,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:07,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 99 [2023-12-21 05:19:07,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753797904] [2023-12-21 05:19:07,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:07,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2023-12-21 05:19:07,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:07,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2023-12-21 05:19:07,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1816, Invalid=7886, Unknown=0, NotChecked=0, Total=9702 [2023-12-21 05:19:07,779 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 99 states, 99 states have (on average 1.1313131313131313) internal successors, (112), 99 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:08,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:08,253 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2023-12-21 05:19:08,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-21 05:19:08,254 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.1313131313131313) internal successors, (112), 99 states have internal predecessors, (112), 0 states have call successors, (0), 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 05:19:08,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:08,260 INFO L225 Difference]: With dead ends: 80 [2023-12-21 05:19:08,260 INFO L226 Difference]: Without dead ends: 74 [2023-12-21 05:19:08,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 21 SyntacticMatches, 20 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8042 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2827, Invalid=11215, Unknown=0, NotChecked=0, Total=14042 [2023-12-21 05:19:08,261 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 134 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:08,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 33 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:19:08,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-21 05:19:08,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-12-21 05:19:08,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0547945205479452) internal successors, (77), 73 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 05:19:08,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2023-12-21 05:19:08,315 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 49 [2023-12-21 05:19:08,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:08,316 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2023-12-21 05:19:08,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 1.1313131313131313) internal successors, (112), 99 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:08,316 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2023-12-21 05:19:08,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 05:19:08,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:08,316 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:08,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2023-12-21 05:19:08,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:08,523 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:08,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:08,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1574071352, now seen corresponding path program 33 times [2023-12-21 05:19:08,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:08,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803675902] [2023-12-21 05:19:08,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:08,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:09,234 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 153 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:09,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:09,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803675902] [2023-12-21 05:19:09,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803675902] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:09,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25516760] [2023-12-21 05:19:09,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:19:09,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:09,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:09,239 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 05:19:09,240 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 05:19:09,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-21 05:19:09,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:09,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-21 05:19:09,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:10,260 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 171 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:10,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 171 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:11,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25516760] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:11,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:11,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 106 [2023-12-21 05:19:11,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736026990] [2023-12-21 05:19:11,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:11,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2023-12-21 05:19:11,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:11,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2023-12-21 05:19:11,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1976, Invalid=9154, Unknown=0, NotChecked=0, Total=11130 [2023-12-21 05:19:11,248 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 106 states, 106 states have (on average 1.1037735849056605) internal successors, (117), 106 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:11,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:11,789 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2023-12-21 05:19:11,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 05:19:11,790 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 1.1037735849056605) internal successors, (117), 106 states have internal predecessors, (117), 0 states have call successors, (0), 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 05:19:11,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:11,790 INFO L225 Difference]: With dead ends: 107 [2023-12-21 05:19:11,790 INFO L226 Difference]: Without dead ends: 77 [2023-12-21 05:19:11,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 16 SyntacticMatches, 22 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9397 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3126, Invalid=13644, Unknown=0, NotChecked=0, Total=16770 [2023-12-21 05:19:11,795 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:11,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 63 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:19:11,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-21 05:19:11,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2023-12-21 05:19:11,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 75 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 05:19:11,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2023-12-21 05:19:11,842 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 50 [2023-12-21 05:19:11,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:11,842 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2023-12-21 05:19:11,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 1.1037735849056605) internal successors, (117), 106 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:11,842 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2023-12-21 05:19:11,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 05:19:11,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:11,842 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:11,847 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 05:19:12,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:12,048 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:12,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:12,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1062751220, now seen corresponding path program 33 times [2023-12-21 05:19:12,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:12,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507529895] [2023-12-21 05:19:12,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:12,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 153 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:12,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:12,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507529895] [2023-12-21 05:19:12,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507529895] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:12,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746565307] [2023-12-21 05:19:12,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:19:12,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:12,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:12,881 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 05:19:12,882 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 05:19:12,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-21 05:19:12,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:12,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-21 05:19:12,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:13,891 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 171 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:13,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 171 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:14,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746565307] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:14,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:14,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 105 [2023-12-21 05:19:14,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065724922] [2023-12-21 05:19:14,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:14,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2023-12-21 05:19:14,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:14,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2023-12-21 05:19:14,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1985, Invalid=8935, Unknown=0, NotChecked=0, Total=10920 [2023-12-21 05:19:14,809 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand has 105 states, 105 states have (on average 1.1142857142857143) internal successors, (117), 105 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:15,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:15,326 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2023-12-21 05:19:15,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 05:19:15,327 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 1.1142857142857143) internal successors, (117), 105 states have internal predecessors, (117), 0 states have call successors, (0), 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 05:19:15,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:15,327 INFO L225 Difference]: With dead ends: 87 [2023-12-21 05:19:15,327 INFO L226 Difference]: Without dead ends: 81 [2023-12-21 05:19:15,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 18 SyntacticMatches, 21 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9189 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3182, Invalid=13330, Unknown=0, NotChecked=0, Total=16512 [2023-12-21 05:19:15,328 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 144 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:15,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 66 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:19:15,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-21 05:19:15,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2023-12-21 05:19:15,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 76 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 05:19:15,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2023-12-21 05:19:15,400 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 50 [2023-12-21 05:19:15,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:15,400 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2023-12-21 05:19:15,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 1.1142857142857143) internal successors, (117), 105 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:15,401 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2023-12-21 05:19:15,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 05:19:15,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:15,401 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:15,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2023-12-21 05:19:15,605 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,SelfDestructingSolverStorable72 [2023-12-21 05:19:15,606 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:15,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:15,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2097669812, now seen corresponding path program 34 times [2023-12-21 05:19:15,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:15,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317407817] [2023-12-21 05:19:15,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:15,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 172 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:16,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:16,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317407817] [2023-12-21 05:19:16,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317407817] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:16,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865137497] [2023-12-21 05:19:16,363 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:19:16,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:16,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:16,364 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 05:19:16,365 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 05:19:16,403 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:19:16,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:16,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 05:19:16,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:17,288 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 190 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:17,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 190 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:18,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865137497] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:18,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:18,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 104 [2023-12-21 05:19:18,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814528611] [2023-12-21 05:19:18,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:18,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2023-12-21 05:19:18,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:18,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2023-12-21 05:19:18,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1983, Invalid=8729, Unknown=0, NotChecked=0, Total=10712 [2023-12-21 05:19:18,137 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 104 states, 104 states have (on average 1.1153846153846154) internal successors, (116), 104 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 05:19:18,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:18,544 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2023-12-21 05:19:18,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-21 05:19:18,544 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.1153846153846154) internal successors, (116), 104 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 51 [2023-12-21 05:19:18,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:18,560 INFO L225 Difference]: With dead ends: 106 [2023-12-21 05:19:18,560 INFO L226 Difference]: Without dead ends: 76 [2023-12-21 05:19:18,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 21 SyntacticMatches, 21 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8911 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3044, Invalid=12456, Unknown=0, NotChecked=0, Total=15500 [2023-12-21 05:19:18,562 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 27 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:18,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 76 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:19:18,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-21 05:19:18,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-12-21 05:19:18,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0533333333333332) internal successors, (79), 75 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 05:19:18,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2023-12-21 05:19:18,626 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 51 [2023-12-21 05:19:18,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:18,626 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2023-12-21 05:19:18,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.1153846153846154) internal successors, (116), 104 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 05:19:18,626 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2023-12-21 05:19:18,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 05:19:18,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:18,626 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:18,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2023-12-21 05:19:18,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:18,830 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:18,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:18,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2023186257, now seen corresponding path program 34 times [2023-12-21 05:19:18,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:18,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612671800] [2023-12-21 05:19:18,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:18,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:19,888 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 153 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:19,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:19,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612671800] [2023-12-21 05:19:19,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612671800] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:19,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670936712] [2023-12-21 05:19:19,888 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:19:19,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:19,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:19,889 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 05:19:19,891 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 05:19:19,937 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:19:19,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:19,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 05:19:19,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:20,910 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 171 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:20,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:22,070 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 190 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:22,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670936712] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:22,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:22,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 104 [2023-12-21 05:19:22,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195613840] [2023-12-21 05:19:22,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:22,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2023-12-21 05:19:22,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:22,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2023-12-21 05:19:22,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2001, Invalid=8711, Unknown=0, NotChecked=0, Total=10712 [2023-12-21 05:19:22,072 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 104 states, 104 states have (on average 1.125) internal successors, (117), 104 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:22,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:22,575 INFO L93 Difference]: Finished difference Result 83 states and 86 transitions. [2023-12-21 05:19:22,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-21 05:19:22,575 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.125) internal successors, (117), 104 states have internal predecessors, (117), 0 states have call successors, (0), 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 05:19:22,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:22,576 INFO L225 Difference]: With dead ends: 83 [2023-12-21 05:19:22,576 INFO L226 Difference]: Without dead ends: 77 [2023-12-21 05:19:22,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 21 SyntacticMatches, 21 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8916 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3115, Invalid=12385, Unknown=0, NotChecked=0, Total=15500 [2023-12-21 05:19:22,577 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 84 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:22,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 71 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:19:22,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-21 05:19:22,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-12-21 05:19:22,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 76 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 05:19:22,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2023-12-21 05:19:22,638 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 51 [2023-12-21 05:19:22,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:22,638 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2023-12-21 05:19:22,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.125) internal successors, (117), 104 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:22,638 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2023-12-21 05:19:22,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 05:19:22,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:22,638 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:22,643 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 05:19:22,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:22,843 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:22,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:22,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1750973627, now seen corresponding path program 35 times [2023-12-21 05:19:22,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:22,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330220058] [2023-12-21 05:19:22,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:22,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:23,772 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 171 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:23,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:23,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330220058] [2023-12-21 05:19:23,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330220058] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:23,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861234798] [2023-12-21 05:19:23,772 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:19:23,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:23,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:23,773 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 05:19:23,774 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 05:19:23,813 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-12-21 05:19:23,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:23,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-21 05:19:23,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:25,290 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 190 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:25,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 190 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:26,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861234798] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:26,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:26,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 111 [2023-12-21 05:19:26,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521135168] [2023-12-21 05:19:26,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:26,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2023-12-21 05:19:26,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:26,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2023-12-21 05:19:26,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2168, Invalid=10042, Unknown=0, NotChecked=0, Total=12210 [2023-12-21 05:19:26,393 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand has 111 states, 111 states have (on average 1.0990990990990992) internal successors, (122), 111 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:27,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:27,007 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2023-12-21 05:19:27,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-21 05:19:27,007 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 1.0990990990990992) internal successors, (122), 111 states have internal predecessors, (122), 0 states have call successors, (0), 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 05:19:27,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:27,008 INFO L225 Difference]: With dead ends: 111 [2023-12-21 05:19:27,008 INFO L226 Difference]: Without dead ends: 80 [2023-12-21 05:19:27,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 16 SyntacticMatches, 23 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10341 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3426, Invalid=14934, Unknown=0, NotChecked=0, Total=18360 [2023-12-21 05:19:27,009 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 31 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:27,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 77 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:19:27,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-21 05:19:27,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2023-12-21 05:19:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.064102564102564) internal successors, (83), 78 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 05:19:27,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2023-12-21 05:19:27,069 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 52 [2023-12-21 05:19:27,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:27,069 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2023-12-21 05:19:27,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 1.0990990990990992) internal successors, (122), 111 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:27,069 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2023-12-21 05:19:27,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 05:19:27,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:27,069 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:27,075 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 05:19:27,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:27,275 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:27,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:27,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1159637317, now seen corresponding path program 35 times [2023-12-21 05:19:27,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:27,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637356076] [2023-12-21 05:19:27,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:27,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:28,266 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 171 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:28,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:28,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637356076] [2023-12-21 05:19:28,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637356076] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:28,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915630611] [2023-12-21 05:19:28,266 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:19:28,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:28,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:28,268 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 05:19:28,268 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 05:19:28,306 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-12-21 05:19:28,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:28,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-21 05:19:28,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 190 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:29,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 190 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:30,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915630611] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:30,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:30,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 110 [2023-12-21 05:19:30,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125071] [2023-12-21 05:19:30,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:30,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2023-12-21 05:19:30,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:30,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2023-12-21 05:19:30,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2178, Invalid=9812, Unknown=0, NotChecked=0, Total=11990 [2023-12-21 05:19:30,713 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 110 states, 110 states have (on average 1.1090909090909091) internal successors, (122), 110 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:31,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:31,384 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2023-12-21 05:19:31,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-21 05:19:31,385 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 1.1090909090909091) internal successors, (122), 110 states have internal predecessors, (122), 0 states have call successors, (0), 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 05:19:31,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:31,385 INFO L225 Difference]: With dead ends: 90 [2023-12-21 05:19:31,385 INFO L226 Difference]: Without dead ends: 84 [2023-12-21 05:19:31,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 18 SyntacticMatches, 22 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10122 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3486, Invalid=14604, Unknown=0, NotChecked=0, Total=18090 [2023-12-21 05:19:31,386 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 185 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:31,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 34 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:19:31,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-21 05:19:31,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2023-12-21 05:19:31,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 79 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 05:19:31,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2023-12-21 05:19:31,442 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 52 [2023-12-21 05:19:31,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:31,442 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2023-12-21 05:19:31,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 1.1090909090909091) internal successors, (122), 110 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:31,443 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2023-12-21 05:19:31,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 05:19:31,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:31,443 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:31,448 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 05:19:31,648 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,SelfDestructingSolverStorable76 [2023-12-21 05:19:31,648 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:31,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:31,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1923101901, now seen corresponding path program 36 times [2023-12-21 05:19:31,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:31,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556798216] [2023-12-21 05:19:31,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:31,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:32,508 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 191 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:32,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:32,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556798216] [2023-12-21 05:19:32,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556798216] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:32,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179936239] [2023-12-21 05:19:32,509 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:19:32,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:32,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:32,510 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 05:19:32,511 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 05:19:32,589 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-12-21 05:19:32,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:32,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 05:19:32,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:33,669 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 210 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:33,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:34,764 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 210 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:34,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179936239] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:34,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:34,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45, 45] total 109 [2023-12-21 05:19:34,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169823364] [2023-12-21 05:19:34,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:34,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2023-12-21 05:19:34,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:34,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2023-12-21 05:19:34,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2176, Invalid=9596, Unknown=0, NotChecked=0, Total=11772 [2023-12-21 05:19:34,766 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand has 109 states, 109 states have (on average 1.110091743119266) internal successors, (121), 109 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 05:19:35,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:35,307 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2023-12-21 05:19:35,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 05:19:35,307 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 1.110091743119266) internal successors, (121), 109 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 53 [2023-12-21 05:19:35,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:35,308 INFO L225 Difference]: With dead ends: 110 [2023-12-21 05:19:35,308 INFO L226 Difference]: Without dead ends: 79 [2023-12-21 05:19:35,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 21 SyntacticMatches, 22 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9830 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3342, Invalid=13688, Unknown=0, NotChecked=0, Total=17030 [2023-12-21 05:19:35,309 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 38 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:35,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 64 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:19:35,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-21 05:19:35,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-12-21 05:19:35,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.0512820512820513) internal successors, (82), 78 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 05:19:35,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2023-12-21 05:19:35,361 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 53 [2023-12-21 05:19:35,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:35,362 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2023-12-21 05:19:35,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 1.110091743119266) internal successors, (121), 109 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 05:19:35,362 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2023-12-21 05:19:35,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 05:19:35,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:35,362 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:35,367 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 05:19:35,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:35,567 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:35,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:35,567 INFO L85 PathProgramCache]: Analyzing trace with hash -441299564, now seen corresponding path program 36 times [2023-12-21 05:19:35,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:35,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076398805] [2023-12-21 05:19:35,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:35,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:36,629 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 171 proven. 229 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:36,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:36,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076398805] [2023-12-21 05:19:36,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076398805] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:36,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092274149] [2023-12-21 05:19:36,630 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:19:36,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:36,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:36,631 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 05:19:36,631 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 05:19:36,693 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-12-21 05:19:36,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:36,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 05:19:36,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 190 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:37,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:38,818 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 210 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:38,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092274149] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:38,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:38,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45, 45] total 109 [2023-12-21 05:19:38,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315543048] [2023-12-21 05:19:38,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:38,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2023-12-21 05:19:38,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:38,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2023-12-21 05:19:38,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2195, Invalid=9577, Unknown=0, NotChecked=0, Total=11772 [2023-12-21 05:19:38,820 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 109 states, 109 states have (on average 1.1192660550458715) internal successors, (122), 109 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:39,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:39,380 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2023-12-21 05:19:39,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 05:19:39,380 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 1.1192660550458715) internal successors, (122), 109 states have internal predecessors, (122), 0 states have call successors, (0), 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 05:19:39,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:39,381 INFO L225 Difference]: With dead ends: 86 [2023-12-21 05:19:39,381 INFO L226 Difference]: Without dead ends: 80 [2023-12-21 05:19:39,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 21 SyntacticMatches, 22 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9835 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3417, Invalid=13613, Unknown=0, NotChecked=0, Total=17030 [2023-12-21 05:19:39,382 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 165 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:39,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 62 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:19:39,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-21 05:19:39,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-12-21 05:19:39,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0506329113924051) internal successors, (83), 79 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 05:19:39,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2023-12-21 05:19:39,436 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 53 [2023-12-21 05:19:39,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:39,436 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2023-12-21 05:19:39,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 1.1192660550458715) internal successors, (122), 109 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:39,436 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2023-12-21 05:19:39,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 05:19:39,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:39,437 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:39,443 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 05:19:39,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:39,641 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:39,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:39,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1633642792, now seen corresponding path program 37 times [2023-12-21 05:19:39,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:39,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469530660] [2023-12-21 05:19:39,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:39,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 190 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:40,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:40,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469530660] [2023-12-21 05:19:40,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469530660] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:40,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719683527] [2023-12-21 05:19:40,491 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:19:40,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:40,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:40,492 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 05:19:40,494 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 05:19:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:40,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-21 05:19:40,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:41,711 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 210 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:41,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 210 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:42,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719683527] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:42,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:42,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 116 [2023-12-21 05:19:42,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414252811] [2023-12-21 05:19:42,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:42,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2023-12-21 05:19:42,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:42,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2023-12-21 05:19:42,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2369, Invalid=10971, Unknown=0, NotChecked=0, Total=13340 [2023-12-21 05:19:42,782 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand has 116 states, 116 states have (on average 1.0948275862068966) internal successors, (127), 116 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:43,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:43,426 INFO L93 Difference]: Finished difference Result 115 states and 121 transitions. [2023-12-21 05:19:43,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-21 05:19:43,426 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 1.0948275862068966) internal successors, (127), 116 states have internal predecessors, (127), 0 states have call successors, (0), 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 05:19:43,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:43,427 INFO L225 Difference]: With dead ends: 115 [2023-12-21 05:19:43,427 INFO L226 Difference]: Without dead ends: 83 [2023-12-21 05:19:43,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 16 SyntacticMatches, 24 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11330 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3740, Invalid=16282, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 05:19:43,428 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 69 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:43,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 67 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:19:43,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-21 05:19:43,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2023-12-21 05:19:43,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 81 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 05:19:43,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2023-12-21 05:19:43,490 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 54 [2023-12-21 05:19:43,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:43,490 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2023-12-21 05:19:43,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 1.0948275862068966) internal successors, (127), 116 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:43,490 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2023-12-21 05:19:43,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 05:19:43,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:43,490 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:43,495 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 05:19:43,695 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,SelfDestructingSolverStorable79 [2023-12-21 05:19:43,696 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:43,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:43,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1612857580, now seen corresponding path program 37 times [2023-12-21 05:19:43,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:43,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759548999] [2023-12-21 05:19:43,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:43,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:44,988 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 190 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:44,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:44,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759548999] [2023-12-21 05:19:44,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759548999] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:44,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47995475] [2023-12-21 05:19:44,989 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:19:44,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:44,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:44,990 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 05:19:45,014 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 05:19:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:45,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-21 05:19:45,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 210 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:46,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:47,553 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 210 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:47,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47995475] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:47,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:47,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 115 [2023-12-21 05:19:47,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182695815] [2023-12-21 05:19:47,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:47,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2023-12-21 05:19:47,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:47,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2023-12-21 05:19:47,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2380, Invalid=10730, Unknown=0, NotChecked=0, Total=13110 [2023-12-21 05:19:47,556 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand has 115 states, 115 states have (on average 1.1043478260869566) internal successors, (127), 115 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:48,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:48,272 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2023-12-21 05:19:48,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-21 05:19:48,273 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 1.1043478260869566) internal successors, (127), 115 states have internal predecessors, (127), 0 states have call successors, (0), 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 05:19:48,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:48,288 INFO L225 Difference]: With dead ends: 93 [2023-12-21 05:19:48,288 INFO L226 Difference]: Without dead ends: 87 [2023-12-21 05:19:48,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 18 SyntacticMatches, 23 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11100 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3804, Invalid=15936, Unknown=0, NotChecked=0, Total=19740 [2023-12-21 05:19:48,290 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 117 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:48,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 90 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:19:48,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-21 05:19:48,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2023-12-21 05:19:48,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 82 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 05:19:48,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2023-12-21 05:19:48,355 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 54 [2023-12-21 05:19:48,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:48,355 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2023-12-21 05:19:48,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 1.1043478260869566) internal successors, (127), 115 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:48,356 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2023-12-21 05:19:48,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 05:19:48,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:48,356 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:48,360 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 05:19:48,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:48,560 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:48,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:48,561 INFO L85 PathProgramCache]: Analyzing trace with hash 758175636, now seen corresponding path program 38 times [2023-12-21 05:19:48,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:48,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139082733] [2023-12-21 05:19:48,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:48,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 211 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:49,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:49,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139082733] [2023-12-21 05:19:49,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139082733] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:49,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792105629] [2023-12-21 05:19:49,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:19:49,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:49,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:49,386 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 05:19:49,388 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 05:19:49,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:19:49,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:49,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 05:19:49,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:50,519 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 231 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:50,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:51,772 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 231 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:51,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792105629] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:51,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:51,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47, 47] total 114 [2023-12-21 05:19:51,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980484348] [2023-12-21 05:19:51,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:51,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2023-12-21 05:19:51,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:51,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2023-12-21 05:19:51,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2378, Invalid=10504, Unknown=0, NotChecked=0, Total=12882 [2023-12-21 05:19:51,774 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 114 states, 114 states have (on average 1.105263157894737) internal successors, (126), 114 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 05:19:52,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:52,285 INFO L93 Difference]: Finished difference Result 114 states and 118 transitions. [2023-12-21 05:19:52,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-21 05:19:52,286 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 1.105263157894737) internal successors, (126), 114 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 55 [2023-12-21 05:19:52,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:52,286 INFO L225 Difference]: With dead ends: 114 [2023-12-21 05:19:52,286 INFO L226 Difference]: Without dead ends: 82 [2023-12-21 05:19:52,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 21 SyntacticMatches, 23 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10794 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3654, Invalid=14978, Unknown=0, NotChecked=0, Total=18632 [2023-12-21 05:19:52,287 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 38 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:52,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 41 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:19:52,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-21 05:19:52,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-12-21 05:19:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0493827160493827) internal successors, (85), 81 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 05:19:52,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2023-12-21 05:19:52,345 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 55 [2023-12-21 05:19:52,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:52,345 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2023-12-21 05:19:52,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 1.105263157894737) internal successors, (126), 114 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 05:19:52,345 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2023-12-21 05:19:52,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 05:19:52,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:52,345 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:52,352 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 05:19:52,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:52,550 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:52,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:52,550 INFO L85 PathProgramCache]: Analyzing trace with hash 420762993, now seen corresponding path program 38 times [2023-12-21 05:19:52,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:52,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810431315] [2023-12-21 05:19:52,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:52,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:53,780 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 190 proven. 251 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:53,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:53,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810431315] [2023-12-21 05:19:53,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810431315] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:53,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439303028] [2023-12-21 05:19:53,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:19:53,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:53,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:53,782 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 05:19:53,784 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 05:19:53,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:19:53,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:53,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 05:19:53,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:55,047 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 210 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:55,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:19:56,140 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 231 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:56,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439303028] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:19:56,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:19:56,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47, 47] total 114 [2023-12-21 05:19:56,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437061891] [2023-12-21 05:19:56,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:19:56,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2023-12-21 05:19:56,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:19:56,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2023-12-21 05:19:56,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=10484, Unknown=0, NotChecked=0, Total=12882 [2023-12-21 05:19:56,142 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand has 114 states, 114 states have (on average 1.1140350877192982) internal successors, (127), 114 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:19:56,674 INFO L93 Difference]: Finished difference Result 89 states and 92 transitions. [2023-12-21 05:19:56,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-21 05:19:56,674 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 1.1140350877192982) internal successors, (127), 114 states have internal predecessors, (127), 0 states have call successors, (0), 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 05:19:56,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:19:56,675 INFO L225 Difference]: With dead ends: 89 [2023-12-21 05:19:56,675 INFO L226 Difference]: Without dead ends: 83 [2023-12-21 05:19:56,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 21 SyntacticMatches, 23 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10799 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3733, Invalid=14899, Unknown=0, NotChecked=0, Total=18632 [2023-12-21 05:19:56,676 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 99 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:19:56,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 64 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:19:56,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-21 05:19:56,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-21 05:19:56,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.048780487804878) internal successors, (86), 82 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 05:19:56,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2023-12-21 05:19:56,742 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 55 [2023-12-21 05:19:56,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:19:56,742 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2023-12-21 05:19:56,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 1.1140350877192982) internal successors, (127), 114 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:19:56,742 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2023-12-21 05:19:56,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 05:19:56,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:19:56,742 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:19:56,749 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 05:19:56,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:56,947 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:19:56,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:19:56,948 INFO L85 PathProgramCache]: Analyzing trace with hash -679507301, now seen corresponding path program 39 times [2023-12-21 05:19:56,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:19:56,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975246176] [2023-12-21 05:19:56,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:19:56,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:19:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:19:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 210 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:57,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:19:57,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975246176] [2023-12-21 05:19:57,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975246176] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:19:57,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981562936] [2023-12-21 05:19:57,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:19:57,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:19:57,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:19:57,941 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 05:19:57,964 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 05:19:58,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-12-21 05:19:58,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:19:58,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-21 05:19:58,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:19:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 231 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:19:59,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 231 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:00,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981562936] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:00,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:00,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 121 [2023-12-21 05:20:00,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581953479] [2023-12-21 05:20:00,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:00,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2023-12-21 05:20:00,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:00,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2023-12-21 05:20:00,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2579, Invalid=11941, Unknown=0, NotChecked=0, Total=14520 [2023-12-21 05:20:00,653 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand has 121 states, 121 states have (on average 1.0909090909090908) internal successors, (132), 121 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:01,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:01,256 INFO L93 Difference]: Finished difference Result 119 states and 125 transitions. [2023-12-21 05:20:01,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-21 05:20:01,256 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 1.0909090909090908) internal successors, (132), 121 states have internal predecessors, (132), 0 states have call successors, (0), 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 05:20:01,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:01,256 INFO L225 Difference]: With dead ends: 119 [2023-12-21 05:20:01,256 INFO L226 Difference]: Without dead ends: 86 [2023-12-21 05:20:01,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 16 SyntacticMatches, 25 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12364 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4068, Invalid=17688, Unknown=0, NotChecked=0, Total=21756 [2023-12-21 05:20:01,258 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 66 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:01,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 53 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:20:01,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-21 05:20:01,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2023-12-21 05:20:01,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 84 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 05:20:01,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2023-12-21 05:20:01,338 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 56 [2023-12-21 05:20:01,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:01,338 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2023-12-21 05:20:01,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 1.0909090909090908) internal successors, (132), 121 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:01,338 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2023-12-21 05:20:01,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 05:20:01,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:01,338 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:01,345 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 05:20:01,543 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,SelfDestructingSolverStorable83 [2023-12-21 05:20:01,544 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:01,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:01,544 INFO L85 PathProgramCache]: Analyzing trace with hash 20245531, now seen corresponding path program 39 times [2023-12-21 05:20:01,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:01,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068737396] [2023-12-21 05:20:01,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:01,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 210 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:02,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:02,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068737396] [2023-12-21 05:20:02,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068737396] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:02,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720383494] [2023-12-21 05:20:02,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:20:02,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:02,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:02,716 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 05:20:02,720 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 05:20:02,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-12-21 05:20:02,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:20:02,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-21 05:20:02,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 231 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:03,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:05,032 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 231 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:05,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720383494] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:05,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:05,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 120 [2023-12-21 05:20:05,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068450294] [2023-12-21 05:20:05,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:05,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2023-12-21 05:20:05,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:05,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2023-12-21 05:20:05,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2591, Invalid=11689, Unknown=0, NotChecked=0, Total=14280 [2023-12-21 05:20:05,047 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 120 states, 120 states have (on average 1.1) internal successors, (132), 120 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:05,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:05,646 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2023-12-21 05:20:05,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-21 05:20:05,646 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 1.1) internal successors, (132), 120 states have internal predecessors, (132), 0 states have call successors, (0), 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 05:20:05,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:05,647 INFO L225 Difference]: With dead ends: 96 [2023-12-21 05:20:05,647 INFO L226 Difference]: Without dead ends: 90 [2023-12-21 05:20:05,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 18 SyntacticMatches, 24 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12123 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4136, Invalid=17326, Unknown=0, NotChecked=0, Total=21462 [2023-12-21 05:20:05,649 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 192 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:05,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 54 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:20:05,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-21 05:20:05,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86. [2023-12-21 05:20:05,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 85 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 05:20:05,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2023-12-21 05:20:05,736 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 56 [2023-12-21 05:20:05,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:05,736 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2023-12-21 05:20:05,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 1.1) internal successors, (132), 120 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:05,736 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2023-12-21 05:20:05,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 05:20:05,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:05,737 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:05,743 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 05:20:05,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:05,942 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:05,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:05,942 INFO L85 PathProgramCache]: Analyzing trace with hash -155235475, now seen corresponding path program 40 times [2023-12-21 05:20:05,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:05,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376614043] [2023-12-21 05:20:05,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:05,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 232 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:06,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:06,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376614043] [2023-12-21 05:20:06,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376614043] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:06,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231101767] [2023-12-21 05:20:06,911 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:20:06,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:06,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:06,912 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 05:20:06,913 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 05:20:06,954 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:20:06,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:20:06,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 05:20:06,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 253 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:08,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:09,364 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 253 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:09,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231101767] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:09,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:09,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 119 [2023-12-21 05:20:09,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671846738] [2023-12-21 05:20:09,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:09,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2023-12-21 05:20:09,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:09,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2023-12-21 05:20:09,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2589, Invalid=11453, Unknown=0, NotChecked=0, Total=14042 [2023-12-21 05:20:09,367 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand has 119 states, 119 states have (on average 1.1008403361344539) internal successors, (131), 119 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 05:20:09,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:09,882 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2023-12-21 05:20:09,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-21 05:20:09,882 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 1.1008403361344539) internal successors, (131), 119 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 57 [2023-12-21 05:20:09,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:09,883 INFO L225 Difference]: With dead ends: 118 [2023-12-21 05:20:09,883 INFO L226 Difference]: Without dead ends: 85 [2023-12-21 05:20:09,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 22 SyntacticMatches, 23 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11734 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3980, Invalid=16326, Unknown=0, NotChecked=0, Total=20306 [2023-12-21 05:20:09,884 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 26 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:09,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 86 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:20:09,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-21 05:20:09,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-12-21 05:20:09,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.0476190476190477) internal successors, (88), 84 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 05:20:09,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2023-12-21 05:20:09,947 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 57 [2023-12-21 05:20:09,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:09,947 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2023-12-21 05:20:09,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 1.1008403361344539) internal successors, (131), 119 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 05:20:09,947 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2023-12-21 05:20:09,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 05:20:09,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:09,948 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:09,952 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 05:20:10,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:10,152 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:10,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:10,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2080504076, now seen corresponding path program 40 times [2023-12-21 05:20:10,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:10,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661169748] [2023-12-21 05:20:10,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:10,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 210 proven. 274 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:11,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:11,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661169748] [2023-12-21 05:20:11,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661169748] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:11,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390922859] [2023-12-21 05:20:11,383 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:20:11,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:11,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:11,385 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 05:20:11,385 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 05:20:11,424 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:20:11,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:20:11,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 05:20:11,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:12,494 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 231 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:12,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 253 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:13,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390922859] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:13,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:13,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 119 [2023-12-21 05:20:13,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23563417] [2023-12-21 05:20:13,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:13,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2023-12-21 05:20:13,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:13,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2023-12-21 05:20:13,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2610, Invalid=11432, Unknown=0, NotChecked=0, Total=14042 [2023-12-21 05:20:13,617 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 119 states, 119 states have (on average 1.1092436974789917) internal successors, (132), 119 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:14,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:14,301 INFO L93 Difference]: Finished difference Result 92 states and 95 transitions. [2023-12-21 05:20:14,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-21 05:20:14,302 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 1.1092436974789917) internal successors, (132), 119 states have internal predecessors, (132), 0 states have call successors, (0), 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 05:20:14,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:14,302 INFO L225 Difference]: With dead ends: 92 [2023-12-21 05:20:14,302 INFO L226 Difference]: Without dead ends: 86 [2023-12-21 05:20:14,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 21 SyntacticMatches, 24 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11808 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4063, Invalid=16243, Unknown=0, NotChecked=0, Total=20306 [2023-12-21 05:20:14,303 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 208 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:14,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 35 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:20:14,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-21 05:20:14,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-12-21 05:20:14,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.0470588235294118) internal successors, (89), 85 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 05:20:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2023-12-21 05:20:14,370 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 57 [2023-12-21 05:20:14,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:14,370 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2023-12-21 05:20:14,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 1.1092436974789917) internal successors, (132), 119 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:14,371 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2023-12-21 05:20:14,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 05:20:14,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:14,371 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:14,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2023-12-21 05:20:14,575 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,SelfDestructingSolverStorable86 [2023-12-21 05:20:14,575 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:14,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:14,575 INFO L85 PathProgramCache]: Analyzing trace with hash -909375112, now seen corresponding path program 41 times [2023-12-21 05:20:14,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:14,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007853297] [2023-12-21 05:20:14,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:14,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 231 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:15,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007853297] [2023-12-21 05:20:15,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007853297] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182071520] [2023-12-21 05:20:15,523 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:20:15,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:15,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:15,524 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 05:20:15,525 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 05:20:15,565 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-12-21 05:20:15,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:20:15,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-21 05:20:15,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:16,867 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 253 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:16,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:18,390 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 253 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:18,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182071520] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:18,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:18,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 126 [2023-12-21 05:20:18,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474711342] [2023-12-21 05:20:18,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:18,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2023-12-21 05:20:18,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:18,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2023-12-21 05:20:18,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2798, Invalid=12952, Unknown=0, NotChecked=0, Total=15750 [2023-12-21 05:20:18,392 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand has 126 states, 126 states have (on average 1.0873015873015872) internal successors, (137), 126 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:19,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:19,179 INFO L93 Difference]: Finished difference Result 123 states and 129 transitions. [2023-12-21 05:20:19,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-21 05:20:19,179 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 1.0873015873015872) internal successors, (137), 126 states have internal predecessors, (137), 0 states have call successors, (0), 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 05:20:19,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:19,180 INFO L225 Difference]: With dead ends: 123 [2023-12-21 05:20:19,180 INFO L226 Difference]: Without dead ends: 89 [2023-12-21 05:20:19,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 16 SyntacticMatches, 26 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13443 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4410, Invalid=19152, Unknown=0, NotChecked=0, Total=23562 [2023-12-21 05:20:19,182 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 52 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:19,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 41 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:20:19,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-21 05:20:19,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2023-12-21 05:20:19,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 87 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:19,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2023-12-21 05:20:19,255 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 58 [2023-12-21 05:20:19,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:19,255 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2023-12-21 05:20:19,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 1.0873015873015872) internal successors, (137), 126 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:19,255 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2023-12-21 05:20:19,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 05:20:19,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:19,255 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:19,276 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 05:20:19,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:19,460 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:19,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:19,461 INFO L85 PathProgramCache]: Analyzing trace with hash -636462540, now seen corresponding path program 41 times [2023-12-21 05:20:19,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:19,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108620873] [2023-12-21 05:20:19,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:19,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:20,890 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 231 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:20,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:20,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108620873] [2023-12-21 05:20:20,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108620873] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:20,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555762504] [2023-12-21 05:20:20,891 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:20:20,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:20,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:20,929 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 05:20:20,960 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 05:20:20,984 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-12-21 05:20:20,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:20:20,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-21 05:20:20,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:22,617 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 253 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:22,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:24,224 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 253 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:24,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555762504] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:24,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:24,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 125 [2023-12-21 05:20:24,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347581408] [2023-12-21 05:20:24,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:24,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2023-12-21 05:20:24,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:24,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2023-12-21 05:20:24,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2811, Invalid=12689, Unknown=0, NotChecked=0, Total=15500 [2023-12-21 05:20:24,227 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand has 125 states, 125 states have (on average 1.096) internal successors, (137), 125 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:24,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:24,897 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2023-12-21 05:20:24,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-21 05:20:24,897 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 1.096) internal successors, (137), 125 states have internal predecessors, (137), 0 states have call successors, (0), 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 05:20:24,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:24,898 INFO L225 Difference]: With dead ends: 99 [2023-12-21 05:20:24,898 INFO L226 Difference]: Without dead ends: 93 [2023-12-21 05:20:24,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 18 SyntacticMatches, 25 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13191 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4482, Invalid=18774, Unknown=0, NotChecked=0, Total=23256 [2023-12-21 05:20:24,899 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 101 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:24,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 50 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:20:24,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-21 05:20:24,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2023-12-21 05:20:24,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 88 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 05:20:24,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2023-12-21 05:20:24,968 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 58 [2023-12-21 05:20:24,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:24,968 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2023-12-21 05:20:24,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 1.096) internal successors, (137), 125 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:24,968 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2023-12-21 05:20:24,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-21 05:20:24,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:24,968 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:24,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2023-12-21 05:20:25,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:25,172 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:25,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:25,173 INFO L85 PathProgramCache]: Analyzing trace with hash 961650804, now seen corresponding path program 42 times [2023-12-21 05:20:25,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:25,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262795342] [2023-12-21 05:20:25,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:25,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 254 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:26,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:26,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262795342] [2023-12-21 05:20:26,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262795342] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:26,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661725451] [2023-12-21 05:20:26,410 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:20:26,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:26,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:26,411 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 05:20:26,435 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 05:20:26,491 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-21 05:20:26,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:20:26,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-21 05:20:26,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:28,231 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 276 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:28,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:29,656 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 276 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:29,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661725451] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:29,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:29,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 124 [2023-12-21 05:20:29,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702876564] [2023-12-21 05:20:29,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:29,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2023-12-21 05:20:29,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:29,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2023-12-21 05:20:29,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2809, Invalid=12443, Unknown=0, NotChecked=0, Total=15252 [2023-12-21 05:20:29,659 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand has 124 states, 124 states have (on average 1.096774193548387) internal successors, (136), 124 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:30,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:30,231 INFO L93 Difference]: Finished difference Result 122 states and 126 transitions. [2023-12-21 05:20:30,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-21 05:20:30,232 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 1.096774193548387) internal successors, (136), 124 states have internal predecessors, (136), 0 states have call successors, (0), 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 59 [2023-12-21 05:20:30,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:30,232 INFO L225 Difference]: With dead ends: 122 [2023-12-21 05:20:30,232 INFO L226 Difference]: Without dead ends: 88 [2023-12-21 05:20:30,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 21 SyntacticMatches, 25 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12857 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=4320, Invalid=17732, Unknown=0, NotChecked=0, Total=22052 [2023-12-21 05:20:30,234 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 41 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:30,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 68 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:20:30,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-21 05:20:30,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-12-21 05:20:30,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 87 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 05:20:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2023-12-21 05:20:30,316 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 59 [2023-12-21 05:20:30,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:30,316 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 91 transitions. [2023-12-21 05:20:30,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 1.096774193548387) internal successors, (136), 124 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:30,316 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions. [2023-12-21 05:20:30,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-21 05:20:30,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:30,316 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:30,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2023-12-21 05:20:30,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2023-12-21 05:20:30,521 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:30,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:30,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1352455057, now seen corresponding path program 42 times [2023-12-21 05:20:30,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:30,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593837633] [2023-12-21 05:20:30,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:30,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 231 proven. 298 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:31,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:31,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593837633] [2023-12-21 05:20:31,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593837633] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:31,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875197788] [2023-12-21 05:20:31,652 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:20:31,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:31,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:31,653 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 05:20:31,655 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 05:20:31,735 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-21 05:20:31,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:20:31,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-21 05:20:31,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:33,415 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 253 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:33,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:34,742 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 276 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:34,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875197788] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:34,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:34,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 124 [2023-12-21 05:20:34,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97683753] [2023-12-21 05:20:34,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:34,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2023-12-21 05:20:34,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:34,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2023-12-21 05:20:34,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2831, Invalid=12421, Unknown=0, NotChecked=0, Total=15252 [2023-12-21 05:20:34,745 INFO L87 Difference]: Start difference. First operand 88 states and 91 transitions. Second operand has 124 states, 124 states have (on average 1.1048387096774193) internal successors, (137), 124 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:35,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:35,357 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2023-12-21 05:20:35,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-21 05:20:35,357 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 1.1048387096774193) internal successors, (137), 124 states have internal predecessors, (137), 0 states have call successors, (0), 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 59 [2023-12-21 05:20:35,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:35,358 INFO L225 Difference]: With dead ends: 95 [2023-12-21 05:20:35,358 INFO L226 Difference]: Without dead ends: 89 [2023-12-21 05:20:35,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 21 SyntacticMatches, 25 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12862 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=4407, Invalid=17645, Unknown=0, NotChecked=0, Total=22052 [2023-12-21 05:20:35,359 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 150 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:35,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 63 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:20:35,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-21 05:20:35,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-12-21 05:20:35,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0454545454545454) internal successors, (92), 88 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:35,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2023-12-21 05:20:35,430 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 59 [2023-12-21 05:20:35,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:35,430 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2023-12-21 05:20:35,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 1.1048387096774193) internal successors, (137), 124 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:35,430 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2023-12-21 05:20:35,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 05:20:35,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:35,431 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:35,436 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 05:20:35,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:35,635 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:35,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:35,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1861824389, now seen corresponding path program 43 times [2023-12-21 05:20:35,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:35,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974224986] [2023-12-21 05:20:35,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:35,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:36,831 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 253 proven. 299 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:36,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:36,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974224986] [2023-12-21 05:20:36,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974224986] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:36,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550982708] [2023-12-21 05:20:36,832 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:20:36,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:36,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:36,833 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 05:20:36,834 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 05:20:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:36,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-21 05:20:36,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:38,600 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 276 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:38,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:40,332 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 276 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:40,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550982708] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:40,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:40,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 131 [2023-12-21 05:20:40,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639741338] [2023-12-21 05:20:40,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:40,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2023-12-21 05:20:40,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:40,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2023-12-21 05:20:40,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3026, Invalid=14004, Unknown=0, NotChecked=0, Total=17030 [2023-12-21 05:20:40,334 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 131 states, 131 states have (on average 1.083969465648855) internal successors, (142), 131 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:41,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:41,146 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2023-12-21 05:20:41,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 05:20:41,146 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 1.083969465648855) internal successors, (142), 131 states have internal predecessors, (142), 0 states have call successors, (0), 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 60 [2023-12-21 05:20:41,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:41,147 INFO L225 Difference]: With dead ends: 127 [2023-12-21 05:20:41,147 INFO L226 Difference]: Without dead ends: 92 [2023-12-21 05:20:41,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 17 SyntacticMatches, 26 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14493 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4766, Invalid=20674, Unknown=0, NotChecked=0, Total=25440 [2023-12-21 05:20:41,148 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 29 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:41,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 64 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:20:41,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-21 05:20:41,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2023-12-21 05:20:41,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 90 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 05:20:41,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2023-12-21 05:20:41,223 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 60 [2023-12-21 05:20:41,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:41,223 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2023-12-21 05:20:41,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 1.083969465648855) internal successors, (142), 131 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:41,223 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2023-12-21 05:20:41,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 05:20:41,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:41,223 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:41,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2023-12-21 05:20:41,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:41,428 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:41,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:41,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1936057989, now seen corresponding path program 43 times [2023-12-21 05:20:41,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:41,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306415228] [2023-12-21 05:20:41,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:41,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:43,028 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 253 proven. 299 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:43,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:43,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306415228] [2023-12-21 05:20:43,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306415228] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:43,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065805288] [2023-12-21 05:20:43,029 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:20:43,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:43,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:43,030 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 05:20:43,032 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 05:20:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:43,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-21 05:20:43,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 276 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:44,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 276 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:46,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065805288] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:46,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:46,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 130 [2023-12-21 05:20:46,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183963814] [2023-12-21 05:20:46,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:46,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2023-12-21 05:20:46,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:46,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2023-12-21 05:20:46,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3040, Invalid=13730, Unknown=0, NotChecked=0, Total=16770 [2023-12-21 05:20:46,740 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand has 130 states, 130 states have (on average 1.0923076923076922) internal successors, (142), 130 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:47,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:47,405 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2023-12-21 05:20:47,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 05:20:47,405 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 1.0923076923076922) internal successors, (142), 130 states have internal predecessors, (142), 0 states have call successors, (0), 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 60 [2023-12-21 05:20:47,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:47,405 INFO L225 Difference]: With dead ends: 102 [2023-12-21 05:20:47,405 INFO L226 Difference]: Without dead ends: 96 [2023-12-21 05:20:47,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 18 SyntacticMatches, 26 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14304 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=4842, Invalid=20280, Unknown=0, NotChecked=0, Total=25122 [2023-12-21 05:20:47,407 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 131 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:47,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 38 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:20:47,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-21 05:20:47,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2023-12-21 05:20:47,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.054945054945055) internal successors, (96), 91 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 05:20:47,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2023-12-21 05:20:47,492 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 60 [2023-12-21 05:20:47,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:47,492 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2023-12-21 05:20:47,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 1.0923076923076922) internal successors, (142), 130 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:47,492 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2023-12-21 05:20:47,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 05:20:47,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:47,493 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:47,510 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 05:20:47,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:47,697 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:47,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:47,697 INFO L85 PathProgramCache]: Analyzing trace with hash -671102451, now seen corresponding path program 44 times [2023-12-21 05:20:47,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:47,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916385216] [2023-12-21 05:20:47,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:47,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 277 proven. 299 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:48,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:48,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916385216] [2023-12-21 05:20:48,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916385216] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:48,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112228972] [2023-12-21 05:20:48,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:20:48,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:48,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:48,858 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 05:20:48,859 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 05:20:48,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:20:48,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:20:48,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-21 05:20:48,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:50,406 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 300 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:50,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:51,989 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 300 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:51,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112228972] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:51,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:51,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53, 53] total 129 [2023-12-21 05:20:51,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164468131] [2023-12-21 05:20:51,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:51,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2023-12-21 05:20:51,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:51,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2023-12-21 05:20:51,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3038, Invalid=13474, Unknown=0, NotChecked=0, Total=16512 [2023-12-21 05:20:51,992 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand has 129 states, 129 states have (on average 1.0930232558139534) internal successors, (141), 129 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:52,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:52,650 INFO L93 Difference]: Finished difference Result 126 states and 130 transitions. [2023-12-21 05:20:52,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-21 05:20:52,650 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 1.0930232558139534) internal successors, (141), 129 states have internal predecessors, (141), 0 states have call successors, (0), 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 61 [2023-12-21 05:20:52,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:52,654 INFO L225 Difference]: With dead ends: 126 [2023-12-21 05:20:52,654 INFO L226 Difference]: Without dead ends: 91 [2023-12-21 05:20:52,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 22 SyntacticMatches, 25 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13881 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=4674, Invalid=19196, Unknown=0, NotChecked=0, Total=23870 [2023-12-21 05:20:52,656 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 32 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:52,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 83 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:20:52,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-21 05:20:52,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-12-21 05:20:52,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.0444444444444445) internal successors, (94), 90 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:52,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2023-12-21 05:20:52,731 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 61 [2023-12-21 05:20:52,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:52,731 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2023-12-21 05:20:52,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 1.0930232558139534) internal successors, (141), 129 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:52,731 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2023-12-21 05:20:52,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 05:20:52,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:52,732 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:52,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2023-12-21 05:20:52,936 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,SelfDestructingSolverStorable93 [2023-12-21 05:20:52,936 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:52,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:52,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1496483756, now seen corresponding path program 44 times [2023-12-21 05:20:52,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:52,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906413436] [2023-12-21 05:20:52,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:52,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:54,269 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 253 proven. 323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:54,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:54,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906413436] [2023-12-21 05:20:54,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906413436] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:54,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017642110] [2023-12-21 05:20:54,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:20:54,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:54,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:54,271 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 05:20:54,293 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 05:20:54,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:20:54,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:20:54,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-21 05:20:54,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:20:55,989 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 276 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:55,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:20:57,792 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 300 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:57,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017642110] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:20:57,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:20:57,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53, 53] total 129 [2023-12-21 05:20:57,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45494273] [2023-12-21 05:20:57,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:20:57,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2023-12-21 05:20:57,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:20:57,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2023-12-21 05:20:57,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3061, Invalid=13451, Unknown=0, NotChecked=0, Total=16512 [2023-12-21 05:20:57,795 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand has 129 states, 129 states have (on average 1.1007751937984496) internal successors, (142), 129 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:58,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:20:58,462 INFO L93 Difference]: Finished difference Result 98 states and 101 transitions. [2023-12-21 05:20:58,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-21 05:20:58,462 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 1.1007751937984496) internal successors, (142), 129 states have internal predecessors, (142), 0 states have call successors, (0), 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 61 [2023-12-21 05:20:58,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:20:58,462 INFO L225 Difference]: With dead ends: 98 [2023-12-21 05:20:58,462 INFO L226 Difference]: Without dead ends: 92 [2023-12-21 05:20:58,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 21 SyntacticMatches, 26 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13961 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4765, Invalid=19105, Unknown=0, NotChecked=0, Total=23870 [2023-12-21 05:20:58,464 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 228 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:20:58,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 37 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:20:58,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-21 05:20:58,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2023-12-21 05:20:58,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.043956043956044) internal successors, (95), 91 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 05:20:58,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2023-12-21 05:20:58,545 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 61 [2023-12-21 05:20:58,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:20:58,545 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2023-12-21 05:20:58,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 1.1007751937984496) internal successors, (142), 129 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:20:58,545 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2023-12-21 05:20:58,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 05:20:58,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:20:58,545 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:20:58,552 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 05:20:58,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:58,750 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:20:58,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:20:58,751 INFO L85 PathProgramCache]: Analyzing trace with hash 15385624, now seen corresponding path program 45 times [2023-12-21 05:20:58,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:20:58,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234849770] [2023-12-21 05:20:58,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:20:58,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:20:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:20:59,824 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 276 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:20:59,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:20:59,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234849770] [2023-12-21 05:20:59,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234849770] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:20:59,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150170414] [2023-12-21 05:20:59,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:20:59,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:20:59,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:20:59,826 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 05:20:59,828 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 05:20:59,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2023-12-21 05:20:59,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:20:59,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-21 05:20:59,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:21:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 300 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:01,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:21:03,332 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 300 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:03,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150170414] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:21:03,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:21:03,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 136 [2023-12-21 05:21:03,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923689455] [2023-12-21 05:21:03,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:21:03,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2023-12-21 05:21:03,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:21:03,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2023-12-21 05:21:03,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3263, Invalid=15097, Unknown=0, NotChecked=0, Total=18360 [2023-12-21 05:21:03,335 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand has 136 states, 136 states have (on average 1.0808823529411764) internal successors, (147), 136 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:04,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:21:04,172 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2023-12-21 05:21:04,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-21 05:21:04,173 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 1.0808823529411764) internal successors, (147), 136 states have internal predecessors, (147), 0 states have call successors, (0), 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 62 [2023-12-21 05:21:04,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:21:04,173 INFO L225 Difference]: With dead ends: 131 [2023-12-21 05:21:04,173 INFO L226 Difference]: Without dead ends: 95 [2023-12-21 05:21:04,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 17 SyntacticMatches, 27 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15659 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5136, Invalid=22254, Unknown=0, NotChecked=0, Total=27390 [2023-12-21 05:21:04,175 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 46 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:21:04,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 75 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:21:04,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-21 05:21:04,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2023-12-21 05:21:04,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.053763440860215) internal successors, (98), 93 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:04,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2023-12-21 05:21:04,253 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 62 [2023-12-21 05:21:04,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:21:04,253 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2023-12-21 05:21:04,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 1.0808823529411764) internal successors, (147), 136 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:04,253 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2023-12-21 05:21:04,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 05:21:04,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:21:04,254 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:21:04,263 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 05:21:04,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:04,458 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:21:04,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:21:04,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2064522580, now seen corresponding path program 45 times [2023-12-21 05:21:04,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:21:04,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108529056] [2023-12-21 05:21:04,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:21:04,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:21:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 276 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:05,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:21:05,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108529056] [2023-12-21 05:21:05,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108529056] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:21:05,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590069502] [2023-12-21 05:21:05,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:21:05,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:05,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:21:05,750 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 05:21:05,750 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 05:21:05,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2023-12-21 05:21:05,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:21:05,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-21 05:21:05,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:21:07,483 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 300 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:07,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:21:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 300 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:09,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590069502] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:21:09,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:21:09,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 135 [2023-12-21 05:21:09,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679868239] [2023-12-21 05:21:09,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:21:09,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2023-12-21 05:21:09,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:21:09,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2023-12-21 05:21:09,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3278, Invalid=14812, Unknown=0, NotChecked=0, Total=18090 [2023-12-21 05:21:09,177 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand has 135 states, 135 states have (on average 1.0888888888888888) internal successors, (147), 135 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:09,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:21:09,961 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2023-12-21 05:21:09,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-21 05:21:09,961 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 1.0888888888888888) internal successors, (147), 135 states have internal predecessors, (147), 0 states have call successors, (0), 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 62 [2023-12-21 05:21:09,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:21:09,961 INFO L225 Difference]: With dead ends: 105 [2023-12-21 05:21:09,961 INFO L226 Difference]: Without dead ends: 99 [2023-12-21 05:21:09,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 18 SyntacticMatches, 27 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15462 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=5216, Invalid=21844, Unknown=0, NotChecked=0, Total=27060 [2023-12-21 05:21:09,963 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 162 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:21:09,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 58 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:21:09,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-12-21 05:21:10,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2023-12-21 05:21:10,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.053191489361702) internal successors, (99), 94 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:10,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2023-12-21 05:21:10,052 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 62 [2023-12-21 05:21:10,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:21:10,052 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2023-12-21 05:21:10,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 1.0888888888888888) internal successors, (147), 135 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:10,052 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2023-12-21 05:21:10,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 05:21:10,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:21:10,052 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:21:10,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2023-12-21 05:21:10,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:10,257 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:21:10,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:21:10,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1207156396, now seen corresponding path program 46 times [2023-12-21 05:21:10,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:21:10,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977050174] [2023-12-21 05:21:10,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:21:10,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:21:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 301 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:11,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:21:11,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977050174] [2023-12-21 05:21:11,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977050174] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:21:11,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423574294] [2023-12-21 05:21:11,436 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:21:11,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:11,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:21:11,437 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 05:21:11,438 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 05:21:11,479 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:21:11,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:21:11,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-21 05:21:11,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:21:12,883 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 325 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:12,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:21:14,408 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 325 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:14,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423574294] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:21:14,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:21:14,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55, 55] total 134 [2023-12-21 05:21:14,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059040463] [2023-12-21 05:21:14,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:21:14,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2023-12-21 05:21:14,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:21:14,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2023-12-21 05:21:14,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3276, Invalid=14546, Unknown=0, NotChecked=0, Total=17822 [2023-12-21 05:21:14,411 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand has 134 states, 134 states have (on average 1.0895522388059702) internal successors, (146), 134 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:15,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:21:15,078 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2023-12-21 05:21:15,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 05:21:15,078 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 1.0895522388059702) internal successors, (146), 134 states have internal predecessors, (146), 0 states have call successors, (0), 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 63 [2023-12-21 05:21:15,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:21:15,079 INFO L225 Difference]: With dead ends: 130 [2023-12-21 05:21:15,079 INFO L226 Difference]: Without dead ends: 94 [2023-12-21 05:21:15,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 21 SyntacticMatches, 27 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15100 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5042, Invalid=20718, Unknown=0, NotChecked=0, Total=25760 [2023-12-21 05:21:15,081 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 30 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:21:15,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 63 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:21:15,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-21 05:21:15,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2023-12-21 05:21:15,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.043010752688172) internal successors, (97), 93 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:15,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2023-12-21 05:21:15,169 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 63 [2023-12-21 05:21:15,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:21:15,169 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2023-12-21 05:21:15,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 1.0895522388059702) internal successors, (146), 134 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:15,170 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2023-12-21 05:21:15,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 05:21:15,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:21:15,170 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:21:15,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2023-12-21 05:21:15,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:15,374 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:21:15,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:21:15,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1079584335, now seen corresponding path program 46 times [2023-12-21 05:21:15,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:21:15,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626590301] [2023-12-21 05:21:15,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:21:15,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:21:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 276 proven. 349 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:16,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:21:16,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626590301] [2023-12-21 05:21:16,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626590301] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:21:16,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810910348] [2023-12-21 05:21:16,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:21:16,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:16,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:21:16,849 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 05:21:16,851 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 05:21:16,890 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:21:16,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:21:16,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-21 05:21:16,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:21:18,343 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 300 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:18,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:21:19,765 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 325 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:19,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810910348] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:21:19,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:21:19,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55, 55] total 134 [2023-12-21 05:21:19,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070679587] [2023-12-21 05:21:19,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:21:19,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2023-12-21 05:21:19,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:21:19,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2023-12-21 05:21:19,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3300, Invalid=14522, Unknown=0, NotChecked=0, Total=17822 [2023-12-21 05:21:19,768 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand has 134 states, 134 states have (on average 1.0970149253731343) internal successors, (147), 134 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:20,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:21:20,528 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2023-12-21 05:21:20,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 05:21:20,529 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 1.0970149253731343) internal successors, (147), 134 states have internal predecessors, (147), 0 states have call successors, (0), 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 63 [2023-12-21 05:21:20,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:21:20,529 INFO L225 Difference]: With dead ends: 101 [2023-12-21 05:21:20,529 INFO L226 Difference]: Without dead ends: 95 [2023-12-21 05:21:20,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 21 SyntacticMatches, 27 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15105 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5137, Invalid=20623, Unknown=0, NotChecked=0, Total=25760 [2023-12-21 05:21:20,530 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 126 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:21:20,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 59 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:21:20,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-21 05:21:20,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-12-21 05:21:20,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.0425531914893618) internal successors, (98), 94 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:20,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2023-12-21 05:21:20,614 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 63 [2023-12-21 05:21:20,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:21:20,615 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2023-12-21 05:21:20,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 1.0970149253731343) internal successors, (147), 134 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:20,615 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2023-12-21 05:21:20,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 05:21:20,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:21:20,615 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:21:20,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2023-12-21 05:21:20,819 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,SelfDestructingSolverStorable98 [2023-12-21 05:21:20,819 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:21:20,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:21:20,820 INFO L85 PathProgramCache]: Analyzing trace with hash 54365787, now seen corresponding path program 47 times [2023-12-21 05:21:20,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:21:20,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484982994] [2023-12-21 05:21:20,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:21:20,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:21:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:21,999 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 300 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:22,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:21:22,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484982994] [2023-12-21 05:21:22,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484982994] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:21:22,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211134324] [2023-12-21 05:21:22,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:21:22,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:22,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:21:22,001 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 05:21:22,003 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 05:21:22,047 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-12-21 05:21:22,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:21:22,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-21 05:21:22,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:21:23,646 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 325 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:23,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:21:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 325 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:25,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211134324] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:21:25,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:21:25,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 141 [2023-12-21 05:21:25,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101059241] [2023-12-21 05:21:25,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:21:25,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2023-12-21 05:21:25,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:21:25,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2023-12-21 05:21:25,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3509, Invalid=16231, Unknown=0, NotChecked=0, Total=19740 [2023-12-21 05:21:25,209 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand has 141 states, 141 states have (on average 1.0780141843971631) internal successors, (152), 141 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:26,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:21:26,021 INFO L93 Difference]: Finished difference Result 135 states and 141 transitions. [2023-12-21 05:21:26,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-21 05:21:26,021 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 141 states have (on average 1.0780141843971631) internal successors, (152), 141 states have internal predecessors, (152), 0 states have call successors, (0), 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 64 [2023-12-21 05:21:26,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:21:26,031 INFO L225 Difference]: With dead ends: 135 [2023-12-21 05:21:26,031 INFO L226 Difference]: Without dead ends: 98 [2023-12-21 05:21:26,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 16 SyntacticMatches, 29 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16950 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5520, Invalid=23892, Unknown=0, NotChecked=0, Total=29412 [2023-12-21 05:21:26,033 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 57 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:21:26,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 52 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:21:26,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-21 05:21:26,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2023-12-21 05:21:26,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 96 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 05:21:26,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2023-12-21 05:21:26,142 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 64 [2023-12-21 05:21:26,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:21:26,142 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2023-12-21 05:21:26,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 141 states have (on average 1.0780141843971631) internal successors, (152), 141 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:26,142 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2023-12-21 05:21:26,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 05:21:26,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:21:26,142 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:21:26,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2023-12-21 05:21:26,346 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,SelfDestructingSolverStorable99 [2023-12-21 05:21:26,347 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:21:26,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:21:26,347 INFO L85 PathProgramCache]: Analyzing trace with hash -791486757, now seen corresponding path program 47 times [2023-12-21 05:21:26,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:21:26,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709834815] [2023-12-21 05:21:26,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:21:26,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:21:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 300 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:27,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:21:27,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709834815] [2023-12-21 05:21:27,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709834815] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:21:27,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719935430] [2023-12-21 05:21:27,968 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:21:27,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:27,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:21:27,969 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 05:21:27,971 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 05:21:28,023 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-12-21 05:21:28,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:21:28,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-21 05:21:28,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:21:29,840 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 325 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:29,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:21:31,558 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 325 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:31,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719935430] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:21:31,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:21:31,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 140 [2023-12-21 05:21:31,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763862511] [2023-12-21 05:21:31,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:21:31,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2023-12-21 05:21:31,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:21:31,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2023-12-21 05:21:31,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3525, Invalid=15935, Unknown=0, NotChecked=0, Total=19460 [2023-12-21 05:21:31,560 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand has 140 states, 140 states have (on average 1.0857142857142856) internal successors, (152), 140 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:32,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:21:32,328 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2023-12-21 05:21:32,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-21 05:21:32,329 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 1.0857142857142856) internal successors, (152), 140 states have internal predecessors, (152), 0 states have call successors, (0), 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 64 [2023-12-21 05:21:32,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:21:32,329 INFO L225 Difference]: With dead ends: 108 [2023-12-21 05:21:32,329 INFO L226 Difference]: Without dead ends: 102 [2023-12-21 05:21:32,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 18 SyntacticMatches, 28 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16665 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=5604, Invalid=23466, Unknown=0, NotChecked=0, Total=29070 [2023-12-21 05:21:32,331 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 135 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:21:32,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 54 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:21:32,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-21 05:21:32,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2023-12-21 05:21:32,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 97 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2023-12-21 05:21:32,427 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 64 [2023-12-21 05:21:32,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:21:32,427 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2023-12-21 05:21:32,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 1.0857142857142856) internal successors, (152), 140 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:32,428 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2023-12-21 05:21:32,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 05:21:32,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:21:32,428 INFO L195 NwaCegarLoop]: trace histogram [26, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:21:32,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2023-12-21 05:21:32,632 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,SelfDestructingSolverStorable100 [2023-12-21 05:21:32,632 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:21:32,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:21:32,633 INFO L85 PathProgramCache]: Analyzing trace with hash 450867373, now seen corresponding path program 48 times [2023-12-21 05:21:32,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:21:32,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371863791] [2023-12-21 05:21:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:21:32,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:21:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 326 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:33,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:21:33,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371863791] [2023-12-21 05:21:33,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371863791] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:21:33,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311427714] [2023-12-21 05:21:33,716 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:21:33,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:33,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:21:33,717 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 05:21:33,719 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 05:21:33,770 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2023-12-21 05:21:33,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:21:33,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-21 05:21:33,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:21:35,304 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 351 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:35,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:21:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 351 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:36,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311427714] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:21:36,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:21:36,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57, 57] total 139 [2023-12-21 05:21:36,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719446260] [2023-12-21 05:21:36,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:21:36,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2023-12-21 05:21:36,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:21:36,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2023-12-21 05:21:36,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3523, Invalid=15659, Unknown=0, NotChecked=0, Total=19182 [2023-12-21 05:21:36,789 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand has 139 states, 139 states have (on average 1.0863309352517985) internal successors, (151), 139 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:37,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:21:37,511 INFO L93 Difference]: Finished difference Result 134 states and 138 transitions. [2023-12-21 05:21:37,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-21 05:21:37,512 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 1.0863309352517985) internal successors, (151), 139 states have internal predecessors, (151), 0 states have call successors, (0), 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 65 [2023-12-21 05:21:37,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:21:37,512 INFO L225 Difference]: With dead ends: 134 [2023-12-21 05:21:37,512 INFO L226 Difference]: Without dead ends: 97 [2023-12-21 05:21:37,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 22 SyntacticMatches, 27 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16208 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5424, Invalid=22298, Unknown=0, NotChecked=0, Total=27722 [2023-12-21 05:21:37,514 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 36 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:21:37,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 64 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:21:37,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-21 05:21:37,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-12-21 05:21:37,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 96 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 05:21:37,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2023-12-21 05:21:37,604 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 65 [2023-12-21 05:21:37,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:21:37,604 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2023-12-21 05:21:37,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 1.0863309352517985) internal successors, (151), 139 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:37,605 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2023-12-21 05:21:37,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 05:21:37,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:21:37,606 INFO L195 NwaCegarLoop]: trace histogram [26, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:21:37,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2023-12-21 05:21:37,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:37,811 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:21:37,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:21:37,811 INFO L85 PathProgramCache]: Analyzing trace with hash 55222708, now seen corresponding path program 48 times [2023-12-21 05:21:37,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:21:37,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295037476] [2023-12-21 05:21:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:21:37,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:21:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:39,406 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 300 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:39,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:21:39,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295037476] [2023-12-21 05:21:39,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295037476] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:21:39,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105320354] [2023-12-21 05:21:39,407 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:21:39,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:39,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:21:39,408 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 05:21:39,408 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 05:21:39,455 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2023-12-21 05:21:39,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:21:39,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-21 05:21:39,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:21:41,174 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 325 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:41,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:21:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 351 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:43,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105320354] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:21:43,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:21:43,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57, 57] total 139 [2023-12-21 05:21:43,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193525812] [2023-12-21 05:21:43,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:21:43,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2023-12-21 05:21:43,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:21:43,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2023-12-21 05:21:43,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3548, Invalid=15634, Unknown=0, NotChecked=0, Total=19182 [2023-12-21 05:21:43,209 INFO L87 Difference]: Start difference. First operand 97 states and 100 transitions. Second operand has 139 states, 139 states have (on average 1.0935251798561152) internal successors, (152), 139 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:44,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:21:44,053 INFO L93 Difference]: Finished difference Result 104 states and 107 transitions. [2023-12-21 05:21:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-21 05:21:44,053 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 1.0935251798561152) internal successors, (152), 139 states have internal predecessors, (152), 0 states have call successors, (0), 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 65 [2023-12-21 05:21:44,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:21:44,054 INFO L225 Difference]: With dead ends: 104 [2023-12-21 05:21:44,054 INFO L226 Difference]: Without dead ends: 98 [2023-12-21 05:21:44,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 21 SyntacticMatches, 28 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16294 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=5523, Invalid=22199, Unknown=0, NotChecked=0, Total=27722 [2023-12-21 05:21:44,055 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 209 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:21:44,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 25 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:21:44,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-21 05:21:44,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-12-21 05:21:44,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.041237113402062) internal successors, (101), 97 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 05:21:44,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2023-12-21 05:21:44,149 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 65 [2023-12-21 05:21:44,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:21:44,149 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2023-12-21 05:21:44,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 1.0935251798561152) internal successors, (152), 139 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:44,149 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2023-12-21 05:21:44,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-21 05:21:44,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:21:44,150 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:21:44,155 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 05:21:44,355 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,SelfDestructingSolverStorable102 [2023-12-21 05:21:44,355 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:21:44,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:21:44,355 INFO L85 PathProgramCache]: Analyzing trace with hash 873645752, now seen corresponding path program 49 times [2023-12-21 05:21:44,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:21:44,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680212647] [2023-12-21 05:21:44,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:21:44,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:21:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 325 proven. 377 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:45,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:21:45,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680212647] [2023-12-21 05:21:45,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680212647] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:21:45,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059230805] [2023-12-21 05:21:45,642 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:21:45,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:45,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:21:45,643 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 05:21:45,645 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 05:21:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:45,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-21 05:21:45,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:21:47,356 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 351 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:47,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:21:48,994 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 351 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:48,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059230805] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:21:48,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:21:48,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 146 [2023-12-21 05:21:48,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693651691] [2023-12-21 05:21:48,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:21:48,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2023-12-21 05:21:48,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:21:48,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2023-12-21 05:21:48,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3764, Invalid=17406, Unknown=0, NotChecked=0, Total=21170 [2023-12-21 05:21:48,996 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand has 146 states, 146 states have (on average 1.0753424657534247) internal successors, (157), 146 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:49,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:21:49,949 INFO L93 Difference]: Finished difference Result 139 states and 145 transitions. [2023-12-21 05:21:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-21 05:21:49,949 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 1.0753424657534247) internal successors, (157), 146 states have internal predecessors, (157), 0 states have call successors, (0), 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 66 [2023-12-21 05:21:49,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:21:49,953 INFO L225 Difference]: With dead ends: 139 [2023-12-21 05:21:49,953 INFO L226 Difference]: Without dead ends: 101 [2023-12-21 05:21:49,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 17 SyntacticMatches, 29 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18126 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=5918, Invalid=25588, Unknown=0, NotChecked=0, Total=31506 [2023-12-21 05:21:49,955 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 52 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:21:49,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 43 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:21:49,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-21 05:21:50,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2023-12-21 05:21:50,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 99 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2023-12-21 05:21:50,065 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 66 [2023-12-21 05:21:50,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:21:50,065 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2023-12-21 05:21:50,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 1.0753424657534247) internal successors, (157), 146 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:50,065 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2023-12-21 05:21:50,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-21 05:21:50,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:21:50,066 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:21:50,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2023-12-21 05:21:50,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2023-12-21 05:21:50,270 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:21:50,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:21:50,271 INFO L85 PathProgramCache]: Analyzing trace with hash 477431924, now seen corresponding path program 49 times [2023-12-21 05:21:50,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:21:50,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307874347] [2023-12-21 05:21:50,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:21:50,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:21:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 325 proven. 377 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:51,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:21:51,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307874347] [2023-12-21 05:21:51,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307874347] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:21:51,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755236194] [2023-12-21 05:21:51,814 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:21:51,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:51,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:21:51,815 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 05:21:51,817 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 05:21:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:51,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-21 05:21:51,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:21:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 351 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:53,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:21:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 351 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:55,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755236194] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:21:55,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:21:55,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 145 [2023-12-21 05:21:55,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24918390] [2023-12-21 05:21:55,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:21:55,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 145 states [2023-12-21 05:21:55,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:21:55,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2023-12-21 05:21:55,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3781, Invalid=17099, Unknown=0, NotChecked=0, Total=20880 [2023-12-21 05:21:55,437 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand has 145 states, 145 states have (on average 1.0827586206896551) internal successors, (157), 145 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:56,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:21:56,463 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2023-12-21 05:21:56,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-21 05:21:56,463 INFO L78 Accepts]: Start accepts. Automaton has has 145 states, 145 states have (on average 1.0827586206896551) internal successors, (157), 145 states have internal predecessors, (157), 0 states have call successors, (0), 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 66 [2023-12-21 05:21:56,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:21:56,464 INFO L225 Difference]: With dead ends: 111 [2023-12-21 05:21:56,464 INFO L226 Difference]: Without dead ends: 105 [2023-12-21 05:21:56,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 18 SyntacticMatches, 29 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17913 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=6006, Invalid=25146, Unknown=0, NotChecked=0, Total=31152 [2023-12-21 05:21:56,465 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 288 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:21:56,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 66 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:21:56,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-21 05:21:56,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2023-12-21 05:21:56,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.05) internal successors, (105), 100 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 05:21:56,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2023-12-21 05:21:56,559 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 66 [2023-12-21 05:21:56,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:21:56,560 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2023-12-21 05:21:56,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 145 states have (on average 1.0827586206896551) internal successors, (157), 145 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:21:56,560 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2023-12-21 05:21:56,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 05:21:56,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:21:56,560 INFO L195 NwaCegarLoop]: trace histogram [27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:21:56,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2023-12-21 05:21:56,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:56,765 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:21:56,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:21:56,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1132640820, now seen corresponding path program 50 times [2023-12-21 05:21:56,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:21:56,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161049067] [2023-12-21 05:21:56,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:21:56,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:21:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:21:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 352 proven. 377 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:21:58,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:21:58,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161049067] [2023-12-21 05:21:58,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161049067] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:21:58,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775784651] [2023-12-21 05:21:58,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:21:58,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:21:58,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:21:58,142 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 05:21:58,143 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 05:21:58,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:21:58,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:21:58,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-21 05:21:58,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:22:00,090 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 378 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:00,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:22:01,707 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 378 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:01,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775784651] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:22:01,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:22:01,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59, 59] total 144 [2023-12-21 05:22:01,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639744988] [2023-12-21 05:22:01,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:22:01,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2023-12-21 05:22:01,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:22:01,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2023-12-21 05:22:01,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3779, Invalid=16813, Unknown=0, NotChecked=0, Total=20592 [2023-12-21 05:22:01,709 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 144 states, 144 states have (on average 1.0833333333333333) internal successors, (156), 144 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:02,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:22:02,526 INFO L93 Difference]: Finished difference Result 138 states and 142 transitions. [2023-12-21 05:22:02,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-21 05:22:02,526 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 144 states have (on average 1.0833333333333333) internal successors, (156), 144 states have internal predecessors, (156), 0 states have call successors, (0), 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 67 [2023-12-21 05:22:02,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:22:02,526 INFO L225 Difference]: With dead ends: 138 [2023-12-21 05:22:02,526 INFO L226 Difference]: Without dead ends: 100 [2023-12-21 05:22:02,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 22 SyntacticMatches, 28 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17439 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=5820, Invalid=23936, Unknown=0, NotChecked=0, Total=29756 [2023-12-21 05:22:02,528 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 39 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:22:02,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 86 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:22:02,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-21 05:22:02,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-12-21 05:22:02,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 99 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:02,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2023-12-21 05:22:02,637 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 67 [2023-12-21 05:22:02,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:22:02,637 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2023-12-21 05:22:02,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 144 states have (on average 1.0833333333333333) internal successors, (156), 144 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:02,637 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2023-12-21 05:22:02,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 05:22:02,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:22:02,638 INFO L195 NwaCegarLoop]: trace histogram [27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:22:02,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2023-12-21 05:22:02,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:02,859 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:22:02,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:22:02,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1697146833, now seen corresponding path program 50 times [2023-12-21 05:22:02,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:22:02,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215591041] [2023-12-21 05:22:02,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:22:02,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:22:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:22:04,525 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 325 proven. 404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:04,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:22:04,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215591041] [2023-12-21 05:22:04,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215591041] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:22:04,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119312437] [2023-12-21 05:22:04,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:22:04,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:04,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:22:04,526 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 05:22:04,528 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 05:22:04,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:22:04,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:22:04,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-21 05:22:04,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:22:06,343 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 351 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:06,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:22:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 378 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:07,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119312437] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:22:07,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:22:07,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59, 59] total 144 [2023-12-21 05:22:07,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059043987] [2023-12-21 05:22:07,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:22:07,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2023-12-21 05:22:07,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:22:07,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2023-12-21 05:22:07,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3805, Invalid=16787, Unknown=0, NotChecked=0, Total=20592 [2023-12-21 05:22:07,966 INFO L87 Difference]: Start difference. First operand 100 states and 103 transitions. Second operand has 144 states, 144 states have (on average 1.0902777777777777) internal successors, (157), 144 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:08,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:22:08,666 INFO L93 Difference]: Finished difference Result 107 states and 110 transitions. [2023-12-21 05:22:08,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-21 05:22:08,666 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 144 states have (on average 1.0902777777777777) internal successors, (157), 144 states have internal predecessors, (157), 0 states have call successors, (0), 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 67 [2023-12-21 05:22:08,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:22:08,666 INFO L225 Difference]: With dead ends: 107 [2023-12-21 05:22:08,666 INFO L226 Difference]: Without dead ends: 101 [2023-12-21 05:22:08,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 21 SyntacticMatches, 29 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17528 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=5923, Invalid=23833, Unknown=0, NotChecked=0, Total=29756 [2023-12-21 05:22:08,668 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 203 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:22:08,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 34 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:22:08,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-21 05:22:08,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-12-21 05:22:08,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.04) internal successors, (104), 100 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:08,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2023-12-21 05:22:08,765 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 67 [2023-12-21 05:22:08,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:22:08,765 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2023-12-21 05:22:08,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 144 states have (on average 1.0902777777777777) internal successors, (157), 144 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:08,765 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2023-12-21 05:22:08,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 05:22:08,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:22:08,766 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:22:08,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2023-12-21 05:22:08,970 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,SelfDestructingSolverStorable106 [2023-12-21 05:22:08,971 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:22:08,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:22:08,971 INFO L85 PathProgramCache]: Analyzing trace with hash 233686075, now seen corresponding path program 51 times [2023-12-21 05:22:08,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:22:08,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889877046] [2023-12-21 05:22:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:22:08,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:22:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:22:10,278 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 351 proven. 405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:10,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:22:10,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889877046] [2023-12-21 05:22:10,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889877046] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:22:10,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491002111] [2023-12-21 05:22:10,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:22:10,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:10,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:22:10,280 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 05:22:10,282 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 05:22:10,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-12-21 05:22:10,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:22:10,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-21 05:22:10,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:22:12,339 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 378 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:12,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:22:14,051 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 378 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:14,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491002111] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:22:14,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:22:14,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 151 [2023-12-21 05:22:14,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319282421] [2023-12-21 05:22:14,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:22:14,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2023-12-21 05:22:14,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:22:14,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2023-12-21 05:22:14,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4028, Invalid=18622, Unknown=0, NotChecked=0, Total=22650 [2023-12-21 05:22:14,054 INFO L87 Difference]: Start difference. First operand 101 states and 104 transitions. Second operand has 151 states, 151 states have (on average 1.0728476821192052) internal successors, (162), 151 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:14,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:22:14,974 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2023-12-21 05:22:14,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-21 05:22:14,974 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 1.0728476821192052) internal successors, (162), 151 states have internal predecessors, (162), 0 states have call successors, (0), 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 68 [2023-12-21 05:22:14,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:22:14,985 INFO L225 Difference]: With dead ends: 143 [2023-12-21 05:22:14,985 INFO L226 Difference]: Without dead ends: 104 [2023-12-21 05:22:14,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 17 SyntacticMatches, 30 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19427 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=6330, Invalid=27342, Unknown=0, NotChecked=0, Total=33672 [2023-12-21 05:22:14,987 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 51 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:22:14,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 60 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:22:14,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-21 05:22:15,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2023-12-21 05:22:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 102 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 05:22:15,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2023-12-21 05:22:15,134 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 68 [2023-12-21 05:22:15,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:22:15,134 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2023-12-21 05:22:15,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 151 states have (on average 1.0728476821192052) internal successors, (162), 151 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:15,134 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2023-12-21 05:22:15,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 05:22:15,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:22:15,135 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:22:15,142 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 05:22:15,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:15,340 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:22:15,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:22:15,340 INFO L85 PathProgramCache]: Analyzing trace with hash 891370555, now seen corresponding path program 51 times [2023-12-21 05:22:15,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:22:15,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572715758] [2023-12-21 05:22:15,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:22:15,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:22:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:22:16,891 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 351 proven. 405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:16,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:22:16,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572715758] [2023-12-21 05:22:16,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572715758] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:22:16,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127667272] [2023-12-21 05:22:16,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:22:16,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:16,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:22:16,892 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 05:22:16,894 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 05:22:16,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-12-21 05:22:16,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:22:16,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-21 05:22:16,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:22:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 378 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:18,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:22:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 378 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:20,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127667272] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:22:20,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:22:20,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 150 [2023-12-21 05:22:20,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425102284] [2023-12-21 05:22:20,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:22:20,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 150 states [2023-12-21 05:22:20,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:22:20,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2023-12-21 05:22:20,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4046, Invalid=18304, Unknown=0, NotChecked=0, Total=22350 [2023-12-21 05:22:20,417 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 150 states, 150 states have (on average 1.08) internal successors, (162), 150 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:21,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:22:21,350 INFO L93 Difference]: Finished difference Result 114 states and 119 transitions. [2023-12-21 05:22:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-21 05:22:21,350 INFO L78 Accepts]: Start accepts. Automaton has has 150 states, 150 states have (on average 1.08) internal successors, (162), 150 states have internal predecessors, (162), 0 states have call successors, (0), 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 68 [2023-12-21 05:22:21,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:22:21,350 INFO L225 Difference]: With dead ends: 114 [2023-12-21 05:22:21,350 INFO L226 Difference]: Without dead ends: 108 [2023-12-21 05:22:21,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 18 SyntacticMatches, 30 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19206 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=6422, Invalid=26884, Unknown=0, NotChecked=0, Total=33306 [2023-12-21 05:22:21,352 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 226 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:22:21,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 62 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:22:21,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-21 05:22:21,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2023-12-21 05:22:21,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 103 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:21,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2023-12-21 05:22:21,453 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 68 [2023-12-21 05:22:21,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:22:21,453 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2023-12-21 05:22:21,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 150 states, 150 states have (on average 1.08) internal successors, (162), 150 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:21,453 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2023-12-21 05:22:21,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 05:22:21,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:22:21,454 INFO L195 NwaCegarLoop]: trace histogram [28, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:22:21,459 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 05:22:21,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:21,659 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:22:21,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:22:21,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1079836493, now seen corresponding path program 52 times [2023-12-21 05:22:21,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:22:21,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671143511] [2023-12-21 05:22:21,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:22:21,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:22:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:22:22,863 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 379 proven. 405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:22,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:22:22,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671143511] [2023-12-21 05:22:22,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671143511] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:22:22,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933091147] [2023-12-21 05:22:22,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:22:22,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:22,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:22:22,864 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 05:22:22,867 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 05:22:22,910 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:22:22,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:22:22,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-21 05:22:22,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:22:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 406 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:24,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:22:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 406 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:26,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933091147] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:22:26,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:22:26,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61, 61] total 149 [2023-12-21 05:22:26,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528469803] [2023-12-21 05:22:26,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:22:26,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2023-12-21 05:22:26,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:22:26,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2023-12-21 05:22:26,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4044, Invalid=18008, Unknown=0, NotChecked=0, Total=22052 [2023-12-21 05:22:26,542 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand has 149 states, 149 states have (on average 1.080536912751678) internal successors, (161), 149 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:27,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:22:27,461 INFO L93 Difference]: Finished difference Result 142 states and 146 transitions. [2023-12-21 05:22:27,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-21 05:22:27,461 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 1.080536912751678) internal successors, (161), 149 states have internal predecessors, (161), 0 states have call successors, (0), 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 69 [2023-12-21 05:22:27,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:22:27,462 INFO L225 Difference]: With dead ends: 142 [2023-12-21 05:22:27,462 INFO L226 Difference]: Without dead ends: 103 [2023-12-21 05:22:27,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 21 SyntacticMatches, 30 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18802 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=6230, Invalid=25632, Unknown=0, NotChecked=0, Total=31862 [2023-12-21 05:22:27,464 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 36 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:22:27,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 103 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:22:27,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-21 05:22:27,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-12-21 05:22:27,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0392156862745099) internal successors, (106), 102 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 05:22:27,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 106 transitions. [2023-12-21 05:22:27,607 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 106 transitions. Word has length 69 [2023-12-21 05:22:27,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:22:27,607 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 106 transitions. [2023-12-21 05:22:27,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 1.080536912751678) internal successors, (161), 149 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:27,608 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 106 transitions. [2023-12-21 05:22:27,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 05:22:27,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:22:27,608 INFO L195 NwaCegarLoop]: trace histogram [28, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:22:27,615 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 05:22:27,812 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,SelfDestructingSolverStorable109 [2023-12-21 05:22:27,813 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:22:27,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:22:27,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1344242452, now seen corresponding path program 52 times [2023-12-21 05:22:27,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:22:27,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450274936] [2023-12-21 05:22:27,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:22:27,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:22:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:22:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 351 proven. 433 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:29,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:22:29,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450274936] [2023-12-21 05:22:29,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450274936] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:22:29,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651546541] [2023-12-21 05:22:29,814 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:22:29,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:29,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:22:29,815 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 05:22:29,817 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 05:22:29,859 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:22:29,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:22:29,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-21 05:22:29,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:22:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 378 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:31,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:22:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 406 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:33,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651546541] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:22:33,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:22:33,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61, 61] total 149 [2023-12-21 05:22:33,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702090624] [2023-12-21 05:22:33,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:22:33,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2023-12-21 05:22:33,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:22:33,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2023-12-21 05:22:33,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4071, Invalid=17981, Unknown=0, NotChecked=0, Total=22052 [2023-12-21 05:22:33,799 INFO L87 Difference]: Start difference. First operand 103 states and 106 transitions. Second operand has 149 states, 149 states have (on average 1.087248322147651) internal successors, (162), 149 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:34,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:22:34,558 INFO L93 Difference]: Finished difference Result 110 states and 113 transitions. [2023-12-21 05:22:34,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-21 05:22:34,559 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 1.087248322147651) internal successors, (162), 149 states have internal predecessors, (162), 0 states have call successors, (0), 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 69 [2023-12-21 05:22:34,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:22:34,559 INFO L225 Difference]: With dead ends: 110 [2023-12-21 05:22:34,559 INFO L226 Difference]: Without dead ends: 104 [2023-12-21 05:22:34,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 21 SyntacticMatches, 30 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18807 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=6337, Invalid=25525, Unknown=0, NotChecked=0, Total=31862 [2023-12-21 05:22:34,561 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 288 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:22:34,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 38 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:22:34,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-21 05:22:34,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-12-21 05:22:34,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0388349514563107) internal successors, (107), 103 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 05:22:34,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2023-12-21 05:22:34,684 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 69 [2023-12-21 05:22:34,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:22:34,685 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2023-12-21 05:22:34,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 1.087248322147651) internal successors, (162), 149 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:34,685 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2023-12-21 05:22:34,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 05:22:34,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:22:34,685 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:22:34,692 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 05:22:34,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:34,892 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:22:34,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:22:34,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2116415144, now seen corresponding path program 53 times [2023-12-21 05:22:34,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:22:34,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32542345] [2023-12-21 05:22:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:22:34,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:22:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:22:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 378 proven. 434 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:36,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:22:36,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32542345] [2023-12-21 05:22:36,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32542345] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:22:36,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454756562] [2023-12-21 05:22:36,313 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:22:36,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:36,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:22:36,314 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 05:22:36,315 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 05:22:36,362 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2023-12-21 05:22:36,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:22:36,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-21 05:22:36,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:22:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 406 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:38,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:22:40,226 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 406 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:40,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454756562] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:22:40,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:22:40,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 156 [2023-12-21 05:22:40,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578701750] [2023-12-21 05:22:40,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:22:40,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 156 states [2023-12-21 05:22:40,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:22:40,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2023-12-21 05:22:40,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4301, Invalid=19879, Unknown=0, NotChecked=0, Total=24180 [2023-12-21 05:22:40,229 INFO L87 Difference]: Start difference. First operand 104 states and 107 transitions. Second operand has 156 states, 156 states have (on average 1.0705128205128205) internal successors, (167), 156 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 05:22:41,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:22:41,254 INFO L93 Difference]: Finished difference Result 147 states and 153 transitions. [2023-12-21 05:22:41,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-21 05:22:41,254 INFO L78 Accepts]: Start accepts. Automaton has has 156 states, 156 states have (on average 1.0705128205128205) internal successors, (167), 156 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) Word has length 70 [2023-12-21 05:22:41,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:22:41,254 INFO L225 Difference]: With dead ends: 147 [2023-12-21 05:22:41,254 INFO L226 Difference]: Without dead ends: 107 [2023-12-21 05:22:41,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 17 SyntacticMatches, 31 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20773 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=6756, Invalid=29154, Unknown=0, NotChecked=0, Total=35910 [2023-12-21 05:22:41,257 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 53 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:22:41,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 55 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:22:41,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-21 05:22:41,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2023-12-21 05:22:41,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.0476190476190477) internal successors, (110), 105 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:41,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2023-12-21 05:22:41,391 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 70 [2023-12-21 05:22:41,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:22:41,391 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2023-12-21 05:22:41,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 156 states, 156 states have (on average 1.0705128205128205) internal successors, (167), 156 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 05:22:41,392 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2023-12-21 05:22:41,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 05:22:41,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:22:41,393 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:22:41,400 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 05:22:41,600 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,SelfDestructingSolverStorable111 [2023-12-21 05:22:41,601 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:22:41,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:22:41,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1147345812, now seen corresponding path program 53 times [2023-12-21 05:22:41,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:22:41,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470922402] [2023-12-21 05:22:41,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:22:41,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:22:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:22:43,708 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 378 proven. 434 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:43,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:22:43,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470922402] [2023-12-21 05:22:43,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470922402] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:22:43,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121971789] [2023-12-21 05:22:43,709 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:22:43,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:43,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:22:43,710 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 05:22:43,712 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 05:22:43,759 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2023-12-21 05:22:43,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:22:43,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-21 05:22:43,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:22:45,837 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 406 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:45,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:22:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 406 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:47,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121971789] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:22:47,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:22:47,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 155 [2023-12-21 05:22:47,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296068673] [2023-12-21 05:22:47,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:22:47,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2023-12-21 05:22:47,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:22:47,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2023-12-21 05:22:47,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4320, Invalid=19550, Unknown=0, NotChecked=0, Total=23870 [2023-12-21 05:22:47,763 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand has 155 states, 155 states have (on average 1.0774193548387097) internal successors, (167), 155 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 05:22:48,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:22:48,693 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2023-12-21 05:22:48,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-21 05:22:48,693 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 155 states have (on average 1.0774193548387097) internal successors, (167), 155 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) Word has length 70 [2023-12-21 05:22:48,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:22:48,693 INFO L225 Difference]: With dead ends: 117 [2023-12-21 05:22:48,693 INFO L226 Difference]: Without dead ends: 111 [2023-12-21 05:22:48,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 18 SyntacticMatches, 31 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20544 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=6852, Invalid=28680, Unknown=0, NotChecked=0, Total=35532 [2023-12-21 05:22:48,695 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 217 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:22:48,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 54 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:22:48,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-21 05:22:48,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2023-12-21 05:22:48,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.0471698113207548) internal successors, (111), 106 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 05:22:48,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2023-12-21 05:22:48,826 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 70 [2023-12-21 05:22:48,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:22:48,826 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2023-12-21 05:22:48,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 155 states have (on average 1.0774193548387097) internal successors, (167), 155 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 05:22:48,826 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2023-12-21 05:22:48,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-21 05:22:48,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:22:48,826 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:22:48,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2023-12-21 05:22:49,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:49,031 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:22:49,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:22:49,031 INFO L85 PathProgramCache]: Analyzing trace with hash 425134868, now seen corresponding path program 54 times [2023-12-21 05:22:49,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:22:49,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910204891] [2023-12-21 05:22:49,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:22:49,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:22:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:22:50,330 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 407 proven. 434 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:50,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:22:50,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910204891] [2023-12-21 05:22:50,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910204891] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:22:50,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617253312] [2023-12-21 05:22:50,331 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:22:50,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:50,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:22:50,332 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 05:22:50,333 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 05:22:50,394 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2023-12-21 05:22:50,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:22:50,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-21 05:22:50,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:22:52,540 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 435 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:52,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:22:54,285 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 435 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:54,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617253312] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:22:54,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:22:54,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63, 63] total 154 [2023-12-21 05:22:54,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360409770] [2023-12-21 05:22:54,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:22:54,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2023-12-21 05:22:54,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:22:54,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2023-12-21 05:22:54,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4318, Invalid=19244, Unknown=0, NotChecked=0, Total=23562 [2023-12-21 05:22:54,288 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand has 154 states, 154 states have (on average 1.0844155844155845) internal successors, (167), 154 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 05:22:55,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:22:55,115 INFO L93 Difference]: Finished difference Result 146 states and 150 transitions. [2023-12-21 05:22:55,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-21 05:22:55,115 INFO L78 Accepts]: Start accepts. Automaton has has 154 states, 154 states have (on average 1.0844155844155845) internal successors, (167), 154 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) Word has length 71 [2023-12-21 05:22:55,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:22:55,115 INFO L225 Difference]: With dead ends: 146 [2023-12-21 05:22:55,115 INFO L226 Difference]: Without dead ends: 106 [2023-12-21 05:22:55,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 22 SyntacticMatches, 30 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20036 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=6654, Invalid=27386, Unknown=0, NotChecked=0, Total=34040 [2023-12-21 05:22:55,117 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:22:55,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 88 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:22:55,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-21 05:22:55,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-12-21 05:22:55,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.0380952380952382) internal successors, (109), 105 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:22:55,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2023-12-21 05:22:55,230 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 109 transitions. Word has length 71 [2023-12-21 05:22:55,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:22:55,230 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 109 transitions. [2023-12-21 05:22:55,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 154 states have (on average 1.0844155844155845) internal successors, (167), 154 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 05:22:55,231 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 109 transitions. [2023-12-21 05:22:55,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-21 05:22:55,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:22:55,231 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:22:55,235 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 05:22:55,434 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,SelfDestructingSolverStorable113 [2023-12-21 05:22:55,434 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:22:55,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:22:55,435 INFO L85 PathProgramCache]: Analyzing trace with hash -23626255, now seen corresponding path program 54 times [2023-12-21 05:22:55,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:22:55,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616247991] [2023-12-21 05:22:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:22:55,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:22:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:22:57,603 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 378 proven. 463 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:57,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:22:57,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616247991] [2023-12-21 05:22:57,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616247991] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:22:57,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235449395] [2023-12-21 05:22:57,604 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:22:57,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:22:57,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:22:57,606 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 05:22:57,607 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 05:22:57,691 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2023-12-21 05:22:57,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:22:57,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-21 05:22:57,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:22:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 406 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:22:59,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:23:01,523 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 435 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:01,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235449395] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:23:01,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:23:01,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63, 63] total 154 [2023-12-21 05:23:01,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267258286] [2023-12-21 05:23:01,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:23:01,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2023-12-21 05:23:01,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:23:01,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2023-12-21 05:23:01,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4346, Invalid=19216, Unknown=0, NotChecked=0, Total=23562 [2023-12-21 05:23:01,526 INFO L87 Difference]: Start difference. First operand 106 states and 109 transitions. Second operand has 154 states, 154 states have (on average 1.0844155844155845) internal successors, (167), 154 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 05:23:02,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:23:02,396 INFO L93 Difference]: Finished difference Result 113 states and 116 transitions. [2023-12-21 05:23:02,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-21 05:23:02,397 INFO L78 Accepts]: Start accepts. Automaton has has 154 states, 154 states have (on average 1.0844155844155845) internal successors, (167), 154 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) Word has length 71 [2023-12-21 05:23:02,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:23:02,397 INFO L225 Difference]: With dead ends: 113 [2023-12-21 05:23:02,397 INFO L226 Difference]: Without dead ends: 107 [2023-12-21 05:23:02,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 21 SyntacticMatches, 31 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20131 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=6765, Invalid=27275, Unknown=0, NotChecked=0, Total=34040 [2023-12-21 05:23:02,399 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 255 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:23:02,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 47 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:23:02,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-21 05:23:02,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-12-21 05:23:02,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.0377358490566038) internal successors, (110), 106 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:02,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 110 transitions. [2023-12-21 05:23:02,511 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 110 transitions. Word has length 71 [2023-12-21 05:23:02,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:23:02,511 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 110 transitions. [2023-12-21 05:23:02,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 154 states have (on average 1.0844155844155845) internal successors, (167), 154 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 05:23:02,512 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 110 transitions. [2023-12-21 05:23:02,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 05:23:02,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:23:02,512 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:23:02,517 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 05:23:02,717 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,SelfDestructingSolverStorable114 [2023-12-21 05:23:02,717 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:23:02,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:23:02,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1570672101, now seen corresponding path program 55 times [2023-12-21 05:23:02,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:23:02,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104741460] [2023-12-21 05:23:02,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:23:02,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:23:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:23:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 406 proven. 464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:04,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:23:04,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104741460] [2023-12-21 05:23:04,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104741460] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:23:04,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058767862] [2023-12-21 05:23:04,453 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:23:04,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:04,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:23:04,454 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 05:23:04,456 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 05:23:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:23:04,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-21 05:23:04,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:23:06,982 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 435 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:06,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:23:09,115 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 435 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:09,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058767862] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:23:09,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:23:09,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 161 [2023-12-21 05:23:09,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346463081] [2023-12-21 05:23:09,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:23:09,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 161 states [2023-12-21 05:23:09,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:23:09,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2023-12-21 05:23:09,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4583, Invalid=21177, Unknown=0, NotChecked=0, Total=25760 [2023-12-21 05:23:09,118 INFO L87 Difference]: Start difference. First operand 107 states and 110 transitions. Second operand has 161 states, 161 states have (on average 1.0683229813664596) internal successors, (172), 161 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 05:23:10,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:23:10,139 INFO L93 Difference]: Finished difference Result 151 states and 157 transitions. [2023-12-21 05:23:10,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-21 05:23:10,139 INFO L78 Accepts]: Start accepts. Automaton has has 161 states, 161 states have (on average 1.0683229813664596) internal successors, (172), 161 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) Word has length 72 [2023-12-21 05:23:10,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:23:10,140 INFO L225 Difference]: With dead ends: 151 [2023-12-21 05:23:10,140 INFO L226 Difference]: Without dead ends: 110 [2023-12-21 05:23:10,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 16 SyntacticMatches, 33 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22256 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=7196, Invalid=31024, Unknown=0, NotChecked=0, Total=38220 [2023-12-21 05:23:10,141 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 63 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:23:10,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 69 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:23:10,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-21 05:23:10,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2023-12-21 05:23:10,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.0462962962962963) internal successors, (113), 108 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:10,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2023-12-21 05:23:10,254 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 72 [2023-12-21 05:23:10,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:23:10,254 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2023-12-21 05:23:10,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 161 states, 161 states have (on average 1.0683229813664596) internal successors, (172), 161 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 05:23:10,255 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2023-12-21 05:23:10,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 05:23:10,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:23:10,256 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:23:10,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2023-12-21 05:23:10,461 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,SelfDestructingSolverStorable115 [2023-12-21 05:23:10,461 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:23:10,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:23:10,464 INFO L85 PathProgramCache]: Analyzing trace with hash 877080987, now seen corresponding path program 55 times [2023-12-21 05:23:10,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:23:10,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615158921] [2023-12-21 05:23:10,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:23:10,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:23:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:23:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 406 proven. 464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:12,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:23:12,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615158921] [2023-12-21 05:23:12,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615158921] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:23:12,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535114195] [2023-12-21 05:23:12,407 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:23:12,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:12,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:23:12,408 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 05:23:12,436 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 05:23:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:23:12,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-21 05:23:12,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:23:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 435 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:14,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:23:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 435 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:16,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535114195] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:23:16,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:23:16,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 160 [2023-12-21 05:23:16,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990309503] [2023-12-21 05:23:16,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:23:16,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 160 states [2023-12-21 05:23:16,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:23:16,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2023-12-21 05:23:16,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4603, Invalid=20837, Unknown=0, NotChecked=0, Total=25440 [2023-12-21 05:23:16,532 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand has 160 states, 160 states have (on average 1.075) internal successors, (172), 160 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 05:23:17,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:23:17,560 INFO L93 Difference]: Finished difference Result 120 states and 125 transitions. [2023-12-21 05:23:17,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-21 05:23:17,560 INFO L78 Accepts]: Start accepts. Automaton has has 160 states, 160 states have (on average 1.075) internal successors, (172), 160 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) Word has length 72 [2023-12-21 05:23:17,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:23:17,561 INFO L225 Difference]: With dead ends: 120 [2023-12-21 05:23:17,561 INFO L226 Difference]: Without dead ends: 114 [2023-12-21 05:23:17,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 18 SyntacticMatches, 32 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21927 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=7296, Invalid=30534, Unknown=0, NotChecked=0, Total=37830 [2023-12-21 05:23:17,563 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 152 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:23:17,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 50 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:23:17,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-21 05:23:17,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 110. [2023-12-21 05:23:17,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.0458715596330275) internal successors, (114), 109 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:17,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2023-12-21 05:23:17,678 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 72 [2023-12-21 05:23:17,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:23:17,678 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2023-12-21 05:23:17,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 160 states, 160 states have (on average 1.075) internal successors, (172), 160 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 05:23:17,678 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2023-12-21 05:23:17,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-21 05:23:17,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:23:17,678 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:23:17,685 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 05:23:17,883 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,SelfDestructingSolverStorable116 [2023-12-21 05:23:17,883 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:23:17,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:23:17,884 INFO L85 PathProgramCache]: Analyzing trace with hash 636859885, now seen corresponding path program 56 times [2023-12-21 05:23:17,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:23:17,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688960899] [2023-12-21 05:23:17,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:23:17,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:23:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:23:19,417 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 436 proven. 464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:19,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:23:19,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688960899] [2023-12-21 05:23:19,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688960899] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:23:19,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381728858] [2023-12-21 05:23:19,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:23:19,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:19,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:23:19,418 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 05:23:19,436 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 05:23:19,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:23:19,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:23:19,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 05:23:19,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:23:21,378 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 465 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:21,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:23:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 465 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:23,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381728858] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:23:23,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:23:23,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65, 65] total 159 [2023-12-21 05:23:23,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085428926] [2023-12-21 05:23:23,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:23:23,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 159 states [2023-12-21 05:23:23,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:23:23,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2023-12-21 05:23:23,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4601, Invalid=20521, Unknown=0, NotChecked=0, Total=25122 [2023-12-21 05:23:23,199 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand has 159 states, 159 states have (on average 1.0754716981132075) internal successors, (171), 159 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 05:23:23,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:23:23,919 INFO L93 Difference]: Finished difference Result 150 states and 154 transitions. [2023-12-21 05:23:23,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-21 05:23:23,919 INFO L78 Accepts]: Start accepts. Automaton has has 159 states, 159 states have (on average 1.0754716981132075) internal successors, (171), 159 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) Word has length 73 [2023-12-21 05:23:23,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:23:23,919 INFO L225 Difference]: With dead ends: 150 [2023-12-21 05:23:23,919 INFO L226 Difference]: Without dead ends: 109 [2023-12-21 05:23:23,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 21 SyntacticMatches, 32 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21495 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=7092, Invalid=29198, Unknown=0, NotChecked=0, Total=36290 [2023-12-21 05:23:23,922 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 35 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:23:23,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 67 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:23:23,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-21 05:23:24,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2023-12-21 05:23:24,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.037037037037037) internal successors, (112), 108 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:24,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 112 transitions. [2023-12-21 05:23:24,050 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 112 transitions. Word has length 73 [2023-12-21 05:23:24,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:23:24,050 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 112 transitions. [2023-12-21 05:23:24,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 159 states, 159 states have (on average 1.0754716981132075) internal successors, (171), 159 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 05:23:24,050 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 112 transitions. [2023-12-21 05:23:24,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-21 05:23:24,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:23:24,051 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:23:24,055 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 05:23:24,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:24,256 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:23:24,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:23:24,256 INFO L85 PathProgramCache]: Analyzing trace with hash -445244300, now seen corresponding path program 56 times [2023-12-21 05:23:24,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:23:24,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216417893] [2023-12-21 05:23:24,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:23:24,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:23:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:23:26,100 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 406 proven. 494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:26,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:23:26,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216417893] [2023-12-21 05:23:26,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216417893] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:23:26,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661829137] [2023-12-21 05:23:26,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:23:26,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:26,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:23:26,101 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 05:23:26,103 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 05:23:26,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:23:26,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:23:26,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 05:23:26,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:23:28,007 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 435 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:28,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:23:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 465 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:30,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661829137] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:23:30,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:23:30,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65, 65] total 159 [2023-12-21 05:23:30,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712238572] [2023-12-21 05:23:30,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:23:30,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 159 states [2023-12-21 05:23:30,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:23:30,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2023-12-21 05:23:30,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4630, Invalid=20492, Unknown=0, NotChecked=0, Total=25122 [2023-12-21 05:23:30,106 INFO L87 Difference]: Start difference. First operand 109 states and 112 transitions. Second operand has 159 states, 159 states have (on average 1.0817610062893082) internal successors, (172), 159 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 05:23:30,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:23:30,963 INFO L93 Difference]: Finished difference Result 116 states and 119 transitions. [2023-12-21 05:23:30,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-21 05:23:30,963 INFO L78 Accepts]: Start accepts. Automaton has has 159 states, 159 states have (on average 1.0817610062893082) internal successors, (172), 159 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) Word has length 73 [2023-12-21 05:23:30,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:23:30,964 INFO L225 Difference]: With dead ends: 116 [2023-12-21 05:23:30,964 INFO L226 Difference]: Without dead ends: 110 [2023-12-21 05:23:30,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 21 SyntacticMatches, 32 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21500 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=7207, Invalid=29083, Unknown=0, NotChecked=0, Total=36290 [2023-12-21 05:23:30,965 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 71 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:23:30,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 60 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:23:30,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-21 05:23:31,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-12-21 05:23:31,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.036697247706422) internal successors, (113), 109 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 113 transitions. [2023-12-21 05:23:31,084 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 113 transitions. Word has length 73 [2023-12-21 05:23:31,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:23:31,085 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 113 transitions. [2023-12-21 05:23:31,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 159 states, 159 states have (on average 1.0817610062893082) internal successors, (172), 159 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 05:23:31,085 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 113 transitions. [2023-12-21 05:23:31,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 05:23:31,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:23:31,085 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:23:31,092 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 05:23:31,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:31,290 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:23:31,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:23:31,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1755929608, now seen corresponding path program 57 times [2023-12-21 05:23:31,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:23:31,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046165064] [2023-12-21 05:23:31,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:23:31,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:23:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:23:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 435 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:32,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:23:32,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046165064] [2023-12-21 05:23:32,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046165064] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:23:32,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597926027] [2023-12-21 05:23:32,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:23:32,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:32,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:23:32,986 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 05:23:32,987 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 05:23:33,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-12-21 05:23:33,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:23:33,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 69 conjunts are in the unsatisfiable core [2023-12-21 05:23:33,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:23:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 465 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:35,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:23:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 465 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:38,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597926027] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:23:38,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:23:38,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68, 68] total 166 [2023-12-21 05:23:38,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427533279] [2023-12-21 05:23:38,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:23:38,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 166 states [2023-12-21 05:23:38,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:23:38,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2023-12-21 05:23:38,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4874, Invalid=22516, Unknown=0, NotChecked=0, Total=27390 [2023-12-21 05:23:38,371 INFO L87 Difference]: Start difference. First operand 110 states and 113 transitions. Second operand has 166 states, 166 states have (on average 1.0662650602409638) internal successors, (177), 166 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:23:39,565 INFO L93 Difference]: Finished difference Result 155 states and 161 transitions. [2023-12-21 05:23:39,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-21 05:23:39,566 INFO L78 Accepts]: Start accepts. Automaton has has 166 states, 166 states have (on average 1.0662650602409638) internal successors, (177), 166 states have internal predecessors, (177), 0 states have call successors, (0), 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 74 [2023-12-21 05:23:39,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:23:39,566 INFO L225 Difference]: With dead ends: 155 [2023-12-21 05:23:39,566 INFO L226 Difference]: Without dead ends: 113 [2023-12-21 05:23:39,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 17 SyntacticMatches, 33 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23600 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=7650, Invalid=32952, Unknown=0, NotChecked=0, Total=40602 [2023-12-21 05:23:39,568 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 38 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:23:39,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 65 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:23:39,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-21 05:23:39,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2023-12-21 05:23:39,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.045045045045045) internal successors, (116), 111 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 05:23:39,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2023-12-21 05:23:39,692 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 74 [2023-12-21 05:23:39,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:23:39,692 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2023-12-21 05:23:39,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 166 states, 166 states have (on average 1.0662650602409638) internal successors, (177), 166 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:39,693 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2023-12-21 05:23:39,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 05:23:39,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:23:39,693 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:23:39,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2023-12-21 05:23:39,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:39,898 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:23:39,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:23:39,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1165383348, now seen corresponding path program 57 times [2023-12-21 05:23:39,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:23:39,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44889276] [2023-12-21 05:23:39,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:23:39,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:23:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:23:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 435 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:42,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:23:42,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44889276] [2023-12-21 05:23:42,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44889276] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:23:42,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226002843] [2023-12-21 05:23:42,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:23:42,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:42,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:23:42,254 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 05:23:42,256 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 05:23:42,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-12-21 05:23:42,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:23:42,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 69 conjunts are in the unsatisfiable core [2023-12-21 05:23:42,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:23:44,827 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 465 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:44,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:23:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 465 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:46,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226002843] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:23:46,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:23:46,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68, 68] total 165 [2023-12-21 05:23:46,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99894102] [2023-12-21 05:23:46,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:23:46,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 165 states [2023-12-21 05:23:46,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:23:46,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2023-12-21 05:23:46,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4895, Invalid=22165, Unknown=0, NotChecked=0, Total=27060 [2023-12-21 05:23:46,984 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand has 165 states, 165 states have (on average 1.0727272727272728) internal successors, (177), 165 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:47,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:23:47,941 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2023-12-21 05:23:47,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-21 05:23:47,941 INFO L78 Accepts]: Start accepts. Automaton has has 165 states, 165 states have (on average 1.0727272727272728) internal successors, (177), 165 states have internal predecessors, (177), 0 states have call successors, (0), 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 74 [2023-12-21 05:23:47,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:23:47,942 INFO L225 Difference]: With dead ends: 123 [2023-12-21 05:23:47,942 INFO L226 Difference]: Without dead ends: 117 [2023-12-21 05:23:47,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 18 SyntacticMatches, 33 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23355 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=7754, Invalid=32446, Unknown=0, NotChecked=0, Total=40200 [2023-12-21 05:23:47,944 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 116 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:23:47,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 46 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:23:47,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-21 05:23:48,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2023-12-21 05:23:48,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0446428571428572) internal successors, (117), 112 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:48,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2023-12-21 05:23:48,082 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 74 [2023-12-21 05:23:48,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:23:48,082 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2023-12-21 05:23:48,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 165 states, 165 states have (on average 1.0727272727272728) internal successors, (177), 165 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:48,082 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2023-12-21 05:23:48,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 05:23:48,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:23:48,083 INFO L195 NwaCegarLoop]: trace histogram [31, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:23:48,087 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 05:23:48,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:48,287 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:23:48,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:23:48,288 INFO L85 PathProgramCache]: Analyzing trace with hash 984298484, now seen corresponding path program 58 times [2023-12-21 05:23:48,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:23:48,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136607109] [2023-12-21 05:23:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:23:48,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:23:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:23:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 466 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:49,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:23:49,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136607109] [2023-12-21 05:23:49,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136607109] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:23:49,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604591723] [2023-12-21 05:23:49,937 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:23:49,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:49,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:23:49,938 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 05:23:49,939 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 05:23:49,984 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:23:49,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:23:49,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-21 05:23:49,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:23:52,237 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 496 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:52,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:23:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 496 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:54,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604591723] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:23:54,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:23:54,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67, 67] total 164 [2023-12-21 05:23:54,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667082102] [2023-12-21 05:23:54,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:23:54,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2023-12-21 05:23:54,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:23:54,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2023-12-21 05:23:54,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4893, Invalid=21839, Unknown=0, NotChecked=0, Total=26732 [2023-12-21 05:23:54,383 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand has 164 states, 164 states have (on average 1.0731707317073171) internal successors, (176), 164 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:55,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:23:55,189 INFO L93 Difference]: Finished difference Result 154 states and 158 transitions. [2023-12-21 05:23:55,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-21 05:23:55,189 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 164 states have (on average 1.0731707317073171) internal successors, (176), 164 states have internal predecessors, (176), 0 states have call successors, (0), 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 75 [2023-12-21 05:23:55,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:23:55,189 INFO L225 Difference]: With dead ends: 154 [2023-12-21 05:23:55,189 INFO L226 Difference]: Without dead ends: 112 [2023-12-21 05:23:55,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 21 SyntacticMatches, 33 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22909 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=7544, Invalid=31068, Unknown=0, NotChecked=0, Total=38612 [2023-12-21 05:23:55,192 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 32 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:23:55,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 58 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:23:55,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-21 05:23:55,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-12-21 05:23:55,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.0360360360360361) internal successors, (115), 111 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:55,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 115 transitions. [2023-12-21 05:23:55,316 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 115 transitions. Word has length 75 [2023-12-21 05:23:55,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:23:55,316 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 115 transitions. [2023-12-21 05:23:55,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 164 states have (on average 1.0731707317073171) internal successors, (176), 164 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:23:55,316 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 115 transitions. [2023-12-21 05:23:55,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 05:23:55,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:23:55,316 INFO L195 NwaCegarLoop]: trace histogram [31, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:23:55,323 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 05:23:55,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:55,521 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:23:55,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:23:55,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1743395857, now seen corresponding path program 58 times [2023-12-21 05:23:55,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:23:55,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878450223] [2023-12-21 05:23:55,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:23:55,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:23:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:23:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 435 proven. 526 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:57,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:23:57,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878450223] [2023-12-21 05:23:57,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878450223] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:23:57,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370655591] [2023-12-21 05:23:57,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:23:57,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:23:57,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:23:57,534 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 05:23:57,535 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 05:23:57,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:23:57,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:23:57,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-21 05:23:57,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:23:59,733 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 465 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:23:59,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:24:02,046 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 496 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:02,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370655591] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:24:02,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:24:02,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67, 67] total 164 [2023-12-21 05:24:02,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989722616] [2023-12-21 05:24:02,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:24:02,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2023-12-21 05:24:02,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:24:02,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2023-12-21 05:24:02,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4923, Invalid=21809, Unknown=0, NotChecked=0, Total=26732 [2023-12-21 05:24:02,049 INFO L87 Difference]: Start difference. First operand 112 states and 115 transitions. Second operand has 164 states, 164 states have (on average 1.079268292682927) internal successors, (177), 164 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:03,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:24:03,065 INFO L93 Difference]: Finished difference Result 119 states and 122 transitions. [2023-12-21 05:24:03,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-21 05:24:03,065 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 164 states have (on average 1.079268292682927) internal successors, (177), 164 states have internal predecessors, (177), 0 states have call successors, (0), 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 75 [2023-12-21 05:24:03,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:24:03,065 INFO L225 Difference]: With dead ends: 119 [2023-12-21 05:24:03,065 INFO L226 Difference]: Without dead ends: 113 [2023-12-21 05:24:03,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 21 SyntacticMatches, 33 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22914 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=7663, Invalid=30949, Unknown=0, NotChecked=0, Total=38612 [2023-12-21 05:24:03,067 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 296 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:24:03,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 55 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:24:03,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-21 05:24:03,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-12-21 05:24:03,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 112 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 05:24:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2023-12-21 05:24:03,197 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 75 [2023-12-21 05:24:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:24:03,197 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2023-12-21 05:24:03,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 164 states have (on average 1.079268292682927) internal successors, (177), 164 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2023-12-21 05:24:03,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 05:24:03,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:24:03,198 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:24:03,202 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 05:24:03,402 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,SelfDestructingSolverStorable122 [2023-12-21 05:24:03,402 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:24:03,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:24:03,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1667405819, now seen corresponding path program 59 times [2023-12-21 05:24:03,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:24:03,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741490830] [2023-12-21 05:24:03,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:24:03,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:24:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:24:05,093 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 465 proven. 527 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:05,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:24:05,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741490830] [2023-12-21 05:24:05,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741490830] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:24:05,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057006131] [2023-12-21 05:24:05,093 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:24:05,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:05,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:24:05,094 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 05:24:05,096 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 05:24:05,146 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2023-12-21 05:24:05,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:24:05,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-21 05:24:05,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:24:07,436 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 496 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:07,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:24:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 496 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:09,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057006131] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:24:09,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:24:09,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 171 [2023-12-21 05:24:09,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943926457] [2023-12-21 05:24:09,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:24:09,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 171 states [2023-12-21 05:24:09,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:24:09,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2023-12-21 05:24:09,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5174, Invalid=23896, Unknown=0, NotChecked=0, Total=29070 [2023-12-21 05:24:09,640 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand has 171 states, 171 states have (on average 1.064327485380117) internal successors, (182), 171 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:24:10,796 INFO L93 Difference]: Finished difference Result 159 states and 165 transitions. [2023-12-21 05:24:10,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-21 05:24:10,796 INFO L78 Accepts]: Start accepts. Automaton has has 171 states, 171 states have (on average 1.064327485380117) internal successors, (182), 171 states have internal predecessors, (182), 0 states have call successors, (0), 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 76 [2023-12-21 05:24:10,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:24:10,797 INFO L225 Difference]: With dead ends: 159 [2023-12-21 05:24:10,797 INFO L226 Difference]: Without dead ends: 116 [2023-12-21 05:24:10,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 17 SyntacticMatches, 34 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25081 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=8118, Invalid=34938, Unknown=0, NotChecked=0, Total=43056 [2023-12-21 05:24:10,799 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 33 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:24:10,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 108 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:24:10,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-21 05:24:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2023-12-21 05:24:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.043859649122807) internal successors, (119), 114 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:10,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2023-12-21 05:24:10,927 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 76 [2023-12-21 05:24:10,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:24:10,927 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2023-12-21 05:24:10,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 171 states, 171 states have (on average 1.064327485380117) internal successors, (182), 171 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:10,928 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2023-12-21 05:24:10,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 05:24:10,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:24:10,928 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:24:10,937 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 05:24:11,135 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,SelfDestructingSolverStorable123 [2023-12-21 05:24:11,135 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:24:11,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:24:11,135 INFO L85 PathProgramCache]: Analyzing trace with hash 2089205499, now seen corresponding path program 59 times [2023-12-21 05:24:11,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:24:11,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168944758] [2023-12-21 05:24:11,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:24:11,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:24:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:24:13,126 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 465 proven. 527 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:13,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:24:13,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168944758] [2023-12-21 05:24:13,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168944758] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:24:13,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484350690] [2023-12-21 05:24:13,126 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:24:13,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:13,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:24:13,127 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 05:24:13,129 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 05:24:13,185 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2023-12-21 05:24:13,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:24:13,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-21 05:24:13,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:24:15,926 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 496 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:15,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:24:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 496 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:18,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484350690] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:24:18,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:24:18,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 170 [2023-12-21 05:24:18,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931000994] [2023-12-21 05:24:18,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:24:18,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 170 states [2023-12-21 05:24:18,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:24:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2023-12-21 05:24:18,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5196, Invalid=23534, Unknown=0, NotChecked=0, Total=28730 [2023-12-21 05:24:18,165 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand has 170 states, 170 states have (on average 1.0705882352941176) internal successors, (182), 170 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:19,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:24:19,189 INFO L93 Difference]: Finished difference Result 126 states and 131 transitions. [2023-12-21 05:24:19,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-21 05:24:19,190 INFO L78 Accepts]: Start accepts. Automaton has has 170 states, 170 states have (on average 1.0705882352941176) internal successors, (182), 170 states have internal predecessors, (182), 0 states have call successors, (0), 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 76 [2023-12-21 05:24:19,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:24:19,190 INFO L225 Difference]: With dead ends: 126 [2023-12-21 05:24:19,190 INFO L226 Difference]: Without dead ends: 120 [2023-12-21 05:24:19,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 18 SyntacticMatches, 34 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24828 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=8226, Invalid=34416, Unknown=0, NotChecked=0, Total=42642 [2023-12-21 05:24:19,192 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 199 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:24:19,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 58 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:24:19,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-21 05:24:19,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2023-12-21 05:24:19,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.0434782608695652) internal successors, (120), 115 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:19,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2023-12-21 05:24:19,322 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 76 [2023-12-21 05:24:19,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:24:19,322 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 120 transitions. [2023-12-21 05:24:19,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 170 states, 170 states have (on average 1.0705882352941176) internal successors, (182), 170 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:19,323 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 120 transitions. [2023-12-21 05:24:19,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 05:24:19,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:24:19,323 INFO L195 NwaCegarLoop]: trace histogram [32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:24:19,327 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 05:24:19,525 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,SelfDestructingSolverStorable124 [2023-12-21 05:24:19,525 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:24:19,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:24:19,526 INFO L85 PathProgramCache]: Analyzing trace with hash -441985907, now seen corresponding path program 60 times [2023-12-21 05:24:19,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:24:19,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017650524] [2023-12-21 05:24:19,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:24:19,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:24:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:24:21,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 497 proven. 527 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:21,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:24:21,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017650524] [2023-12-21 05:24:21,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017650524] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:24:21,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754808631] [2023-12-21 05:24:21,307 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:24:21,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:21,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:24:21,308 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 05:24:21,334 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 05:24:21,383 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2023-12-21 05:24:21,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:24:21,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-21 05:24:21,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:24:23,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 528 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:23,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:24:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 528 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:25,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754808631] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:24:25,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:24:25,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69, 69] total 169 [2023-12-21 05:24:25,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879683482] [2023-12-21 05:24:25,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:24:25,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 169 states [2023-12-21 05:24:25,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:24:25,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2023-12-21 05:24:25,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5194, Invalid=23198, Unknown=0, NotChecked=0, Total=28392 [2023-12-21 05:24:25,625 INFO L87 Difference]: Start difference. First operand 116 states and 120 transitions. Second operand has 169 states, 169 states have (on average 1.0710059171597632) internal successors, (181), 169 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 05:24:26,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:24:26,465 INFO L93 Difference]: Finished difference Result 158 states and 162 transitions. [2023-12-21 05:24:26,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-21 05:24:26,465 INFO L78 Accepts]: Start accepts. Automaton has has 169 states, 169 states have (on average 1.0710059171597632) internal successors, (181), 169 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) Word has length 77 [2023-12-21 05:24:26,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:24:26,465 INFO L225 Difference]: With dead ends: 158 [2023-12-21 05:24:26,465 INFO L226 Difference]: Without dead ends: 115 [2023-12-21 05:24:26,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 21 SyntacticMatches, 34 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24368 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=8010, Invalid=32996, Unknown=0, NotChecked=0, Total=41006 [2023-12-21 05:24:26,467 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 43 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:24:26,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 71 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:24:26,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-21 05:24:26,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-12-21 05:24:26,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0350877192982457) internal successors, (118), 114 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 118 transitions. [2023-12-21 05:24:26,598 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 118 transitions. Word has length 77 [2023-12-21 05:24:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:24:26,598 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 118 transitions. [2023-12-21 05:24:26,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 169 states, 169 states have (on average 1.0710059171597632) internal successors, (181), 169 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 05:24:26,598 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 118 transitions. [2023-12-21 05:24:26,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 05:24:26,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:24:26,598 INFO L195 NwaCegarLoop]: trace histogram [32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:24:26,605 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 05:24:26,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2023-12-21 05:24:26,803 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:24:26,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:24:26,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1559784916, now seen corresponding path program 60 times [2023-12-21 05:24:26,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:24:26,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890012120] [2023-12-21 05:24:26,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:24:26,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:24:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:24:28,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 465 proven. 559 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:28,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:24:28,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890012120] [2023-12-21 05:24:28,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890012120] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:24:28,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576309597] [2023-12-21 05:24:28,883 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:24:28,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:28,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:24:28,884 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 05:24:28,884 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 05:24:28,945 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2023-12-21 05:24:28,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:24:28,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-21 05:24:28,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:24:31,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 496 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:31,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:24:33,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 528 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:33,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576309597] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:24:33,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:24:33,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69, 69] total 169 [2023-12-21 05:24:33,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538953313] [2023-12-21 05:24:33,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:24:33,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 169 states [2023-12-21 05:24:33,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:24:33,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2023-12-21 05:24:33,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5225, Invalid=23167, Unknown=0, NotChecked=0, Total=28392 [2023-12-21 05:24:33,594 INFO L87 Difference]: Start difference. First operand 115 states and 118 transitions. Second operand has 169 states, 169 states have (on average 1.0769230769230769) internal successors, (182), 169 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:34,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:24:34,652 INFO L93 Difference]: Finished difference Result 122 states and 125 transitions. [2023-12-21 05:24:34,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-21 05:24:34,653 INFO L78 Accepts]: Start accepts. Automaton has has 169 states, 169 states have (on average 1.0769230769230769) internal successors, (182), 169 states have internal predecessors, (182), 0 states have call successors, (0), 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 77 [2023-12-21 05:24:34,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:24:34,653 INFO L225 Difference]: With dead ends: 122 [2023-12-21 05:24:34,653 INFO L226 Difference]: Without dead ends: 116 [2023-12-21 05:24:34,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 21 SyntacticMatches, 34 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24373 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=8133, Invalid=32873, Unknown=0, NotChecked=0, Total=41006 [2023-12-21 05:24:34,655 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 163 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:24:34,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 56 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:24:34,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-21 05:24:34,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-12-21 05:24:34,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.0347826086956522) internal successors, (119), 115 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 119 transitions. [2023-12-21 05:24:34,793 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 119 transitions. Word has length 77 [2023-12-21 05:24:34,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:24:34,793 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 119 transitions. [2023-12-21 05:24:34,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 169 states, 169 states have (on average 1.0769230769230769) internal successors, (182), 169 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:34,793 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 119 transitions. [2023-12-21 05:24:34,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 05:24:34,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:24:34,794 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:24:34,801 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 05:24:34,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:34,999 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:24:34,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:24:34,999 INFO L85 PathProgramCache]: Analyzing trace with hash 270433944, now seen corresponding path program 61 times [2023-12-21 05:24:34,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:24:34,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788845879] [2023-12-21 05:24:34,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:24:34,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:24:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:24:36,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 496 proven. 560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:36,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:24:36,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788845879] [2023-12-21 05:24:36,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788845879] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:24:36,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13112011] [2023-12-21 05:24:36,699 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:24:36,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:36,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:24:36,700 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 05:24:36,701 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 05:24:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:24:36,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-21 05:24:36,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:24:39,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 528 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:39,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:24:42,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 528 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:42,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13112011] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:24:42,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:24:42,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72, 72] total 176 [2023-12-21 05:24:42,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557403997] [2023-12-21 05:24:42,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:24:42,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 176 states [2023-12-21 05:24:42,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:24:42,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2023-12-21 05:24:42,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5483, Invalid=25317, Unknown=0, NotChecked=0, Total=30800 [2023-12-21 05:24:42,822 INFO L87 Difference]: Start difference. First operand 116 states and 119 transitions. Second operand has 176 states, 176 states have (on average 1.0625) internal successors, (187), 176 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 05:24:44,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:24:44,152 INFO L93 Difference]: Finished difference Result 163 states and 169 transitions. [2023-12-21 05:24:44,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-12-21 05:24:44,153 INFO L78 Accepts]: Start accepts. Automaton has has 176 states, 176 states have (on average 1.0625) internal successors, (187), 176 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) Word has length 78 [2023-12-21 05:24:44,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:24:44,154 INFO L225 Difference]: With dead ends: 163 [2023-12-21 05:24:44,154 INFO L226 Difference]: Without dead ends: 119 [2023-12-21 05:24:44,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 17 SyntacticMatches, 35 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26607 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=8600, Invalid=36982, Unknown=0, NotChecked=0, Total=45582 [2023-12-21 05:24:44,157 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 37 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:24:44,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 104 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:24:44,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-21 05:24:44,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2023-12-21 05:24:44,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0427350427350428) internal successors, (122), 117 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 122 transitions. [2023-12-21 05:24:44,297 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 122 transitions. Word has length 78 [2023-12-21 05:24:44,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:24:44,297 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 122 transitions. [2023-12-21 05:24:44,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 176 states, 176 states have (on average 1.0625) internal successors, (187), 176 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 05:24:44,297 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 122 transitions. [2023-12-21 05:24:44,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 05:24:44,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:24:44,298 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:24:44,302 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 05:24:44,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:44,503 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:24:44,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:24:44,503 INFO L85 PathProgramCache]: Analyzing trace with hash 516733396, now seen corresponding path program 61 times [2023-12-21 05:24:44,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:24:44,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103033871] [2023-12-21 05:24:44,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:24:44,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:24:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:24:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 496 proven. 560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:46,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:24:46,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103033871] [2023-12-21 05:24:46,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103033871] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:24:46,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598268662] [2023-12-21 05:24:46,795 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:24:46,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:46,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:24:46,796 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 05:24:46,797 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 05:24:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:24:46,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-21 05:24:46,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:24:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 528 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:49,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:24:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 528 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:51,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598268662] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:24:51,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:24:51,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72, 72] total 175 [2023-12-21 05:24:51,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720650842] [2023-12-21 05:24:51,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:24:51,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 175 states [2023-12-21 05:24:51,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:24:51,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2023-12-21 05:24:51,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5506, Invalid=24944, Unknown=0, NotChecked=0, Total=30450 [2023-12-21 05:24:51,990 INFO L87 Difference]: Start difference. First operand 118 states and 122 transitions. Second operand has 175 states, 175 states have (on average 1.0685714285714285) internal successors, (187), 175 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 05:24:53,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:24:53,115 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2023-12-21 05:24:53,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-12-21 05:24:53,115 INFO L78 Accepts]: Start accepts. Automaton has has 175 states, 175 states have (on average 1.0685714285714285) internal successors, (187), 175 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) Word has length 78 [2023-12-21 05:24:53,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:24:53,133 INFO L225 Difference]: With dead ends: 129 [2023-12-21 05:24:53,133 INFO L226 Difference]: Without dead ends: 123 [2023-12-21 05:24:53,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 18 SyntacticMatches, 35 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26346 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=8712, Invalid=36444, Unknown=0, NotChecked=0, Total=45156 [2023-12-21 05:24:53,136 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 371 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:24:53,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 78 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:24:53,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-21 05:24:53,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2023-12-21 05:24:53,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0423728813559323) internal successors, (123), 118 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:24:53,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2023-12-21 05:24:53,286 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 78 [2023-12-21 05:24:53,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:24:53,286 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2023-12-21 05:24:53,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 175 states, 175 states have (on average 1.0685714285714285) internal successors, (187), 175 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 05:24:53,286 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2023-12-21 05:24:53,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 05:24:53,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:24:53,287 INFO L195 NwaCegarLoop]: trace histogram [33, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:24:53,292 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 05:24:53,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2023-12-21 05:24:53,491 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:24:53,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:24:53,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1943980844, now seen corresponding path program 62 times [2023-12-21 05:24:53,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:24:53,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129956940] [2023-12-21 05:24:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:24:53,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:24:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:24:55,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 529 proven. 560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:55,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:24:55,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129956940] [2023-12-21 05:24:55,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129956940] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:24:55,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839143090] [2023-12-21 05:24:55,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:24:55,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:24:55,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:24:55,131 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 05:24:55,133 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 05:24:55,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:24:55,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:24:55,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-21 05:24:55,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:24:57,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 561 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:24:57,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:25:00,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 561 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:00,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839143090] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:25:00,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:25:00,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71, 71] total 174 [2023-12-21 05:25:00,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000934532] [2023-12-21 05:25:00,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:25:00,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 174 states [2023-12-21 05:25:00,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:25:00,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2023-12-21 05:25:00,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5504, Invalid=24598, Unknown=0, NotChecked=0, Total=30102 [2023-12-21 05:25:00,462 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand has 174 states, 174 states have (on average 1.0689655172413792) internal successors, (186), 174 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:01,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:25:01,465 INFO L93 Difference]: Finished difference Result 162 states and 166 transitions. [2023-12-21 05:25:01,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-21 05:25:01,465 INFO L78 Accepts]: Start accepts. Automaton has has 174 states, 174 states have (on average 1.0689655172413792) internal successors, (186), 174 states have internal predecessors, (186), 0 states have call successors, (0), 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 79 [2023-12-21 05:25:01,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:25:01,465 INFO L225 Difference]: With dead ends: 162 [2023-12-21 05:25:01,465 INFO L226 Difference]: Without dead ends: 118 [2023-12-21 05:25:01,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 21 SyntacticMatches, 35 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25872 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=8490, Invalid=34982, Unknown=0, NotChecked=0, Total=43472 [2023-12-21 05:25:01,468 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 41 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:25:01,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 58 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:25:01,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-21 05:25:01,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-12-21 05:25:01,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0341880341880343) internal successors, (121), 117 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 05:25:01,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 121 transitions. [2023-12-21 05:25:01,616 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 121 transitions. Word has length 79 [2023-12-21 05:25:01,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:25:01,617 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 121 transitions. [2023-12-21 05:25:01,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 174 states, 174 states have (on average 1.0689655172413792) internal successors, (186), 174 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:01,617 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 121 transitions. [2023-12-21 05:25:01,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 05:25:01,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:25:01,617 INFO L195 NwaCegarLoop]: trace histogram [33, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:25:01,624 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 05:25:01,821 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,SelfDestructingSolverStorable129 [2023-12-21 05:25:01,822 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:25:01,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:25:01,822 INFO L85 PathProgramCache]: Analyzing trace with hash -74038735, now seen corresponding path program 62 times [2023-12-21 05:25:01,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:25:01,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052555286] [2023-12-21 05:25:01,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:25:01,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:25:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:25:04,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 496 proven. 593 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:04,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:25:04,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052555286] [2023-12-21 05:25:04,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052555286] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:25:04,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962879044] [2023-12-21 05:25:04,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:25:04,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:04,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:25:04,269 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 05:25:04,271 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 05:25:04,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:25:04,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:25:04,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-21 05:25:04,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:25:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 528 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:07,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:25:09,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 561 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:09,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962879044] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:25:09,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:25:09,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71, 71] total 174 [2023-12-21 05:25:09,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9617339] [2023-12-21 05:25:09,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:25:09,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 174 states [2023-12-21 05:25:09,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:25:09,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2023-12-21 05:25:09,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5536, Invalid=24566, Unknown=0, NotChecked=0, Total=30102 [2023-12-21 05:25:09,582 INFO L87 Difference]: Start difference. First operand 118 states and 121 transitions. Second operand has 174 states, 174 states have (on average 1.0747126436781609) internal successors, (187), 174 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 05:25:10,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:25:10,780 INFO L93 Difference]: Finished difference Result 125 states and 128 transitions. [2023-12-21 05:25:10,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-21 05:25:10,780 INFO L78 Accepts]: Start accepts. Automaton has has 174 states, 174 states have (on average 1.0747126436781609) internal successors, (187), 174 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) Word has length 79 [2023-12-21 05:25:10,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:25:10,780 INFO L225 Difference]: With dead ends: 125 [2023-12-21 05:25:10,780 INFO L226 Difference]: Without dead ends: 119 [2023-12-21 05:25:10,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 21 SyntacticMatches, 35 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25877 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=8617, Invalid=34855, Unknown=0, NotChecked=0, Total=43472 [2023-12-21 05:25:10,782 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 107 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:25:10,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 23 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:25:10,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-21 05:25:10,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2023-12-21 05:25:10,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0338983050847457) internal successors, (122), 118 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:10,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 122 transitions. [2023-12-21 05:25:10,933 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 122 transitions. Word has length 79 [2023-12-21 05:25:10,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:25:10,934 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 122 transitions. [2023-12-21 05:25:10,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 174 states, 174 states have (on average 1.0747126436781609) internal successors, (187), 174 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 05:25:10,934 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 122 transitions. [2023-12-21 05:25:10,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 05:25:10,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:25:10,937 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:25:10,942 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 05:25:11,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:11,142 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:25:11,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:25:11,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1161508315, now seen corresponding path program 63 times [2023-12-21 05:25:11,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:25:11,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063801588] [2023-12-21 05:25:11,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:25:11,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:25:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:25:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 528 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:12,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:25:12,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063801588] [2023-12-21 05:25:12,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063801588] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:25:12,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237890643] [2023-12-21 05:25:12,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:25:12,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:12,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:25:12,874 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 05:25:12,877 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 05:25:12,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2023-12-21 05:25:12,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:25:12,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 75 conjunts are in the unsatisfiable core [2023-12-21 05:25:12,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:25:15,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 561 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:15,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:25:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 561 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:18,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237890643] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:25:18,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:25:18,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74, 74] total 181 [2023-12-21 05:25:18,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346116108] [2023-12-21 05:25:18,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:25:18,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 181 states [2023-12-21 05:25:18,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:25:18,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2023-12-21 05:25:18,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5801, Invalid=26779, Unknown=0, NotChecked=0, Total=32580 [2023-12-21 05:25:18,280 INFO L87 Difference]: Start difference. First operand 119 states and 122 transitions. Second operand has 181 states, 181 states have (on average 1.0607734806629834) internal successors, (192), 181 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:19,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:25:19,386 INFO L93 Difference]: Finished difference Result 167 states and 173 transitions. [2023-12-21 05:25:19,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-21 05:25:19,386 INFO L78 Accepts]: Start accepts. Automaton has has 181 states, 181 states have (on average 1.0607734806629834) internal successors, (192), 181 states have internal predecessors, (192), 0 states have call successors, (0), 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 80 [2023-12-21 05:25:19,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:25:19,386 INFO L225 Difference]: With dead ends: 167 [2023-12-21 05:25:19,386 INFO L226 Difference]: Without dead ends: 122 [2023-12-21 05:25:19,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 16 SyntacticMatches, 37 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28282 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=9096, Invalid=39084, Unknown=0, NotChecked=0, Total=48180 [2023-12-21 05:25:19,389 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 72 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:25:19,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 46 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:25:19,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-21 05:25:19,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2023-12-21 05:25:19,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.0416666666666667) internal successors, (125), 120 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:19,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2023-12-21 05:25:19,542 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 80 [2023-12-21 05:25:19,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:25:19,543 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 125 transitions. [2023-12-21 05:25:19,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 181 states, 181 states have (on average 1.0607734806629834) internal successors, (192), 181 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:19,543 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions. [2023-12-21 05:25:19,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 05:25:19,548 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:25:19,548 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:25:19,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2023-12-21 05:25:19,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:19,753 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:25:19,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:25:19,753 INFO L85 PathProgramCache]: Analyzing trace with hash 262267995, now seen corresponding path program 63 times [2023-12-21 05:25:19,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:25:19,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456983547] [2023-12-21 05:25:19,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:25:19,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:25:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:25:21,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 528 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:21,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:25:21,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456983547] [2023-12-21 05:25:21,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456983547] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:25:21,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80656336] [2023-12-21 05:25:21,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:25:21,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:21,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:25:21,908 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 05:25:21,908 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 05:25:21,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2023-12-21 05:25:21,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:25:21,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 75 conjunts are in the unsatisfiable core [2023-12-21 05:25:21,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:25:24,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 561 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:24,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:25:27,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 561 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:27,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80656336] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:25:27,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:25:27,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74, 74] total 180 [2023-12-21 05:25:27,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962543350] [2023-12-21 05:25:27,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:25:27,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 180 states [2023-12-21 05:25:27,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:25:27,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2023-12-21 05:25:27,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5825, Invalid=26395, Unknown=0, NotChecked=0, Total=32220 [2023-12-21 05:25:27,545 INFO L87 Difference]: Start difference. First operand 121 states and 125 transitions. Second operand has 180 states, 180 states have (on average 1.0666666666666667) internal successors, (192), 180 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:28,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:25:28,887 INFO L93 Difference]: Finished difference Result 132 states and 137 transitions. [2023-12-21 05:25:28,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-21 05:25:28,887 INFO L78 Accepts]: Start accepts. Automaton has has 180 states, 180 states have (on average 1.0666666666666667) internal successors, (192), 180 states have internal predecessors, (192), 0 states have call successors, (0), 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 80 [2023-12-21 05:25:28,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:25:28,887 INFO L225 Difference]: With dead ends: 132 [2023-12-21 05:25:28,887 INFO L226 Difference]: Without dead ends: 126 [2023-12-21 05:25:28,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 18 SyntacticMatches, 36 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27909 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=9212, Invalid=38530, Unknown=0, NotChecked=0, Total=47742 [2023-12-21 05:25:28,889 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 339 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:25:28,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 70 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:25:28,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-21 05:25:29,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 122. [2023-12-21 05:25:29,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.0413223140495869) internal successors, (126), 121 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 05:25:29,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 126 transitions. [2023-12-21 05:25:29,037 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 126 transitions. Word has length 80 [2023-12-21 05:25:29,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:25:29,037 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 126 transitions. [2023-12-21 05:25:29,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 180 states, 180 states have (on average 1.0666666666666667) internal successors, (192), 180 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:29,037 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 126 transitions. [2023-12-21 05:25:29,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 05:25:29,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:25:29,037 INFO L195 NwaCegarLoop]: trace histogram [34, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:25:29,044 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 05:25:29,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:29,246 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:25:29,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:25:29,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1242473683, now seen corresponding path program 64 times [2023-12-21 05:25:29,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:25:29,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709727517] [2023-12-21 05:25:29,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:25:29,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:25:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:25:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 562 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:30,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:25:30,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709727517] [2023-12-21 05:25:30,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709727517] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:25:30,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238510568] [2023-12-21 05:25:30,874 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:25:30,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:30,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:25:30,876 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 05:25:30,876 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 05:25:30,924 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:25:30,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:25:30,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-21 05:25:30,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:25:33,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 595 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:33,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:25:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 595 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:35,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238510568] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:25:35,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:25:35,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73, 73] total 179 [2023-12-21 05:25:35,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267040272] [2023-12-21 05:25:35,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:25:35,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 179 states [2023-12-21 05:25:35,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:25:35,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2023-12-21 05:25:35,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5823, Invalid=26039, Unknown=0, NotChecked=0, Total=31862 [2023-12-21 05:25:35,707 INFO L87 Difference]: Start difference. First operand 122 states and 126 transitions. Second operand has 179 states, 179 states have (on average 1.0670391061452513) internal successors, (191), 179 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:36,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:25:36,643 INFO L93 Difference]: Finished difference Result 166 states and 170 transitions. [2023-12-21 05:25:36,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-12-21 05:25:36,643 INFO L78 Accepts]: Start accepts. Automaton has has 179 states, 179 states have (on average 1.0670391061452513) internal successors, (191), 179 states have internal predecessors, (191), 0 states have call successors, (0), 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 81 [2023-12-21 05:25:36,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:25:36,643 INFO L225 Difference]: With dead ends: 166 [2023-12-21 05:25:36,643 INFO L226 Difference]: Without dead ends: 121 [2023-12-21 05:25:36,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 21 SyntacticMatches, 36 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27421 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=8984, Invalid=37026, Unknown=0, NotChecked=0, Total=46010 [2023-12-21 05:25:36,646 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 40 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:25:36,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 61 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:25:36,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-21 05:25:36,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-12-21 05:25:36,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.0333333333333334) internal successors, (124), 120 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:36,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 124 transitions. [2023-12-21 05:25:36,809 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 124 transitions. Word has length 81 [2023-12-21 05:25:36,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:25:36,809 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 124 transitions. [2023-12-21 05:25:36,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 179 states, 179 states have (on average 1.0670391061452513) internal successors, (191), 179 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:36,809 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 124 transitions. [2023-12-21 05:25:36,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 05:25:36,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:25:36,810 INFO L195 NwaCegarLoop]: trace histogram [34, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:25:36,816 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 05:25:37,014 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,SelfDestructingSolverStorable133 [2023-12-21 05:25:37,014 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:25:37,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:25:37,015 INFO L85 PathProgramCache]: Analyzing trace with hash 835745588, now seen corresponding path program 64 times [2023-12-21 05:25:37,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:25:37,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720126926] [2023-12-21 05:25:37,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:25:37,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:25:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:25:39,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 528 proven. 628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:39,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:25:39,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720126926] [2023-12-21 05:25:39,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720126926] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:25:39,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182029659] [2023-12-21 05:25:39,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:25:39,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:39,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:25:39,396 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 05:25:39,396 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 05:25:39,461 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:25:39,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:25:39,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-21 05:25:39,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:25:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 561 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:41,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:25:44,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 595 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:44,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182029659] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:25:44,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:25:44,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73, 73] total 179 [2023-12-21 05:25:44,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652771174] [2023-12-21 05:25:44,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:25:44,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 179 states [2023-12-21 05:25:44,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:25:44,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2023-12-21 05:25:44,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5856, Invalid=26006, Unknown=0, NotChecked=0, Total=31862 [2023-12-21 05:25:44,340 INFO L87 Difference]: Start difference. First operand 121 states and 124 transitions. Second operand has 179 states, 179 states have (on average 1.0726256983240223) internal successors, (192), 179 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:45,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:25:45,701 INFO L93 Difference]: Finished difference Result 128 states and 131 transitions. [2023-12-21 05:25:45,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-12-21 05:25:45,701 INFO L78 Accepts]: Start accepts. Automaton has has 179 states, 179 states have (on average 1.0726256983240223) internal successors, (192), 179 states have internal predecessors, (192), 0 states have call successors, (0), 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 81 [2023-12-21 05:25:45,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:25:45,702 INFO L225 Difference]: With dead ends: 128 [2023-12-21 05:25:45,702 INFO L226 Difference]: Without dead ends: 122 [2023-12-21 05:25:45,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 21 SyntacticMatches, 36 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27426 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=9115, Invalid=36895, Unknown=0, NotChecked=0, Total=46010 [2023-12-21 05:25:45,704 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 217 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:25:45,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 47 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:25:45,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-21 05:25:45,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2023-12-21 05:25:45,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.0330578512396693) internal successors, (125), 121 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:45,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 125 transitions. [2023-12-21 05:25:45,854 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 125 transitions. Word has length 81 [2023-12-21 05:25:45,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:25:45,855 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 125 transitions. [2023-12-21 05:25:45,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 179 states, 179 states have (on average 1.0726256983240223) internal successors, (192), 179 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:45,855 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 125 transitions. [2023-12-21 05:25:45,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-21 05:25:45,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:25:45,855 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:25:45,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2023-12-21 05:25:46,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2023-12-21 05:25:46,060 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:25:46,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:25:46,060 INFO L85 PathProgramCache]: Analyzing trace with hash -699948744, now seen corresponding path program 65 times [2023-12-21 05:25:46,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:25:46,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606158584] [2023-12-21 05:25:46,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:25:46,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:25:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:25:48,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 561 proven. 629 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:48,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:25:48,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606158584] [2023-12-21 05:25:48,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606158584] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:25:48,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535388816] [2023-12-21 05:25:48,196 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:25:48,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:48,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:25:48,197 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 05:25:48,198 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 05:25:48,248 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-12-21 05:25:48,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:25:48,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 77 conjunts are in the unsatisfiable core [2023-12-21 05:25:48,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:25:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 595 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:51,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:25:54,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 595 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:54,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535388816] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:25:54,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:25:54,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76, 76] total 186 [2023-12-21 05:25:54,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146045447] [2023-12-21 05:25:54,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:25:54,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 186 states [2023-12-21 05:25:54,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:25:54,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2023-12-21 05:25:54,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6128, Invalid=28282, Unknown=0, NotChecked=0, Total=34410 [2023-12-21 05:25:54,025 INFO L87 Difference]: Start difference. First operand 122 states and 125 transitions. Second operand has 186 states, 186 states have (on average 1.0591397849462365) internal successors, (197), 186 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:55,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:25:55,226 INFO L93 Difference]: Finished difference Result 171 states and 177 transitions. [2023-12-21 05:25:55,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-21 05:25:55,227 INFO L78 Accepts]: Start accepts. Automaton has has 186 states, 186 states have (on average 1.0591397849462365) internal successors, (197), 186 states have internal predecessors, (197), 0 states have call successors, (0), 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 82 [2023-12-21 05:25:55,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:25:55,227 INFO L225 Difference]: With dead ends: 171 [2023-12-21 05:25:55,227 INFO L226 Difference]: Without dead ends: 125 [2023-12-21 05:25:55,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 17 SyntacticMatches, 37 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29794 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=9606, Invalid=41244, Unknown=0, NotChecked=0, Total=50850 [2023-12-21 05:25:55,229 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 58 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:25:55,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 65 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:25:55,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-21 05:25:55,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2023-12-21 05:25:55,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.0406504065040652) internal successors, (128), 123 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 05:25:55,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 128 transitions. [2023-12-21 05:25:55,382 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 128 transitions. Word has length 82 [2023-12-21 05:25:55,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:25:55,382 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 128 transitions. [2023-12-21 05:25:55,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 186 states, 186 states have (on average 1.0591397849462365) internal successors, (197), 186 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:25:55,382 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 128 transitions. [2023-12-21 05:25:55,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-21 05:25:55,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:25:55,382 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:25:55,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2023-12-21 05:25:55,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2023-12-21 05:25:55,587 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:25:55,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:25:55,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1543783668, now seen corresponding path program 65 times [2023-12-21 05:25:55,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:25:55,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056941483] [2023-12-21 05:25:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:25:55,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:25:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:25:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 561 proven. 629 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:25:58,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:25:58,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056941483] [2023-12-21 05:25:58,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056941483] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:25:58,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845713587] [2023-12-21 05:25:58,117 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:25:58,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:25:58,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:25:58,120 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 05:25:58,140 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 05:25:58,170 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-12-21 05:25:58,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:25:58,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 77 conjunts are in the unsatisfiable core [2023-12-21 05:25:58,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:26:00,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 595 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:26:00,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:26:03,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 595 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:26:03,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845713587] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:26:03,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:26:03,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76, 76] total 185 [2023-12-21 05:26:03,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162570948] [2023-12-21 05:26:03,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:26:03,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 185 states [2023-12-21 05:26:03,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:26:03,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2023-12-21 05:26:03,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6153, Invalid=27887, Unknown=0, NotChecked=0, Total=34040 [2023-12-21 05:26:03,157 INFO L87 Difference]: Start difference. First operand 124 states and 128 transitions. Second operand has 185 states, 185 states have (on average 1.0648648648648649) internal successors, (197), 185 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:26:04,383 INFO L93 Difference]: Finished difference Result 135 states and 140 transitions. [2023-12-21 05:26:04,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-21 05:26:04,384 INFO L78 Accepts]: Start accepts. Automaton has has 185 states, 185 states have (on average 1.0648648648648649) internal successors, (197), 185 states have internal predecessors, (197), 0 states have call successors, (0), 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 82 [2023-12-21 05:26:04,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:26:04,384 INFO L225 Difference]: With dead ends: 135 [2023-12-21 05:26:04,384 INFO L226 Difference]: Without dead ends: 129 [2023-12-21 05:26:04,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 18 SyntacticMatches, 37 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29517 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=9726, Invalid=40674, Unknown=0, NotChecked=0, Total=50400 [2023-12-21 05:26:04,387 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 348 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:26:04,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 66 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:26:04,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-12-21 05:26:04,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2023-12-21 05:26:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.0403225806451613) internal successors, (129), 124 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:04,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2023-12-21 05:26:04,555 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 82 [2023-12-21 05:26:04,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:26:04,555 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2023-12-21 05:26:04,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 185 states, 185 states have (on average 1.0648648648648649) internal successors, (197), 185 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:04,555 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2023-12-21 05:26:04,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 05:26:04,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:26:04,556 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:26:04,560 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 05:26:04,760 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,SelfDestructingSolverStorable136 [2023-12-21 05:26:04,760 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:26:04,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:26:04,761 INFO L85 PathProgramCache]: Analyzing trace with hash -170193484, now seen corresponding path program 66 times [2023-12-21 05:26:04,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:26:04,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062104984] [2023-12-21 05:26:04,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:26:04,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:26:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:26:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 596 proven. 629 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:26:06,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:26:06,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062104984] [2023-12-21 05:26:06,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062104984] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:26:06,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798874514] [2023-12-21 05:26:06,884 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:26:06,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:06,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:26:06,885 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 05:26:06,886 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 05:26:06,977 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-12-21 05:26:06,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:26:06,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 76 conjunts are in the unsatisfiable core [2023-12-21 05:26:06,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:26:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 630 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:26:09,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:26:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 630 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:26:13,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798874514] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:26:13,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:26:13,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75, 75] total 184 [2023-12-21 05:26:13,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329030009] [2023-12-21 05:26:13,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:26:13,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 184 states [2023-12-21 05:26:13,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:26:13,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2023-12-21 05:26:13,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6151, Invalid=27521, Unknown=0, NotChecked=0, Total=33672 [2023-12-21 05:26:13,232 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand has 184 states, 184 states have (on average 1.065217391304348) internal successors, (196), 184 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:14,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:26:14,588 INFO L93 Difference]: Finished difference Result 170 states and 174 transitions. [2023-12-21 05:26:14,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-21 05:26:14,588 INFO L78 Accepts]: Start accepts. Automaton has has 184 states, 184 states have (on average 1.065217391304348) internal successors, (196), 184 states have internal predecessors, (196), 0 states have call successors, (0), 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 83 [2023-12-21 05:26:14,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:26:14,588 INFO L225 Difference]: With dead ends: 170 [2023-12-21 05:26:14,589 INFO L226 Difference]: Without dead ends: 124 [2023-12-21 05:26:14,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 21 SyntacticMatches, 37 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29015 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=9492, Invalid=39128, Unknown=0, NotChecked=0, Total=48620 [2023-12-21 05:26:14,591 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 31 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:26:14,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 96 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:26:14,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-21 05:26:14,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-12-21 05:26:14,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.032520325203252) internal successors, (127), 123 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:14,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2023-12-21 05:26:14,762 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 83 [2023-12-21 05:26:14,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:26:14,762 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2023-12-21 05:26:14,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 184 states, 184 states have (on average 1.065217391304348) internal successors, (196), 184 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:14,762 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2023-12-21 05:26:14,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 05:26:14,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:26:14,762 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:26:14,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2023-12-21 05:26:14,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:14,967 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:26:14,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:26:14,968 INFO L85 PathProgramCache]: Analyzing trace with hash -225316783, now seen corresponding path program 66 times [2023-12-21 05:26:14,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:26:14,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432911263] [2023-12-21 05:26:14,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:26:14,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:26:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:26:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 561 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:26:17,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:26:17,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432911263] [2023-12-21 05:26:17,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432911263] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:26:17,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427106574] [2023-12-21 05:26:17,423 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:26:17,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:17,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:26:17,424 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 05:26:17,425 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 05:26:17,480 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-12-21 05:26:17,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:26:17,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 76 conjunts are in the unsatisfiable core [2023-12-21 05:26:17,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:26:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 595 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:26:20,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:26:22,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 630 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:26:22,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427106574] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:26:22,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:26:22,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75, 75] total 184 [2023-12-21 05:26:22,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287728036] [2023-12-21 05:26:22,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:26:22,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 184 states [2023-12-21 05:26:22,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:26:22,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2023-12-21 05:26:22,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6185, Invalid=27487, Unknown=0, NotChecked=0, Total=33672 [2023-12-21 05:26:22,760 INFO L87 Difference]: Start difference. First operand 124 states and 127 transitions. Second operand has 184 states, 184 states have (on average 1.0706521739130435) internal successors, (197), 184 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:23,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:26:23,892 INFO L93 Difference]: Finished difference Result 131 states and 134 transitions. [2023-12-21 05:26:23,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-21 05:26:23,892 INFO L78 Accepts]: Start accepts. Automaton has has 184 states, 184 states have (on average 1.0706521739130435) internal successors, (197), 184 states have internal predecessors, (197), 0 states have call successors, (0), 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 83 [2023-12-21 05:26:23,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:26:23,893 INFO L225 Difference]: With dead ends: 131 [2023-12-21 05:26:23,893 INFO L226 Difference]: Without dead ends: 125 [2023-12-21 05:26:23,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 21 SyntacticMatches, 37 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29020 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=9627, Invalid=38993, Unknown=0, NotChecked=0, Total=48620 [2023-12-21 05:26:23,895 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 205 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:26:23,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 60 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:26:23,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-21 05:26:24,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2023-12-21 05:26:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.032258064516129) internal successors, (128), 124 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 05:26:24,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 128 transitions. [2023-12-21 05:26:24,071 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 128 transitions. Word has length 83 [2023-12-21 05:26:24,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:26:24,071 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 128 transitions. [2023-12-21 05:26:24,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 184 states, 184 states have (on average 1.0706521739130435) internal successors, (197), 184 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:24,072 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 128 transitions. [2023-12-21 05:26:24,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 05:26:24,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:26:24,072 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:26:24,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2023-12-21 05:26:24,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2023-12-21 05:26:24,277 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:26:24,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:26:24,277 INFO L85 PathProgramCache]: Analyzing trace with hash 766856123, now seen corresponding path program 67 times [2023-12-21 05:26:24,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:26:24,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45776527] [2023-12-21 05:26:24,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:26:24,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:26:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:26:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 595 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:26:26,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:26:26,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45776527] [2023-12-21 05:26:26,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45776527] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:26:26,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401990717] [2023-12-21 05:26:26,680 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:26:26,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:26,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:26:26,681 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 05:26:26,682 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 05:26:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:26:26,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 79 conjunts are in the unsatisfiable core [2023-12-21 05:26:26,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:26:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 630 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:26:29,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:26:32,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 630 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:26:32,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401990717] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:26:32,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:26:32,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78, 78] total 191 [2023-12-21 05:26:32,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20096098] [2023-12-21 05:26:32,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:26:32,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 191 states [2023-12-21 05:26:32,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:26:32,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2023-12-21 05:26:32,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6464, Invalid=29826, Unknown=0, NotChecked=0, Total=36290 [2023-12-21 05:26:32,563 INFO L87 Difference]: Start difference. First operand 125 states and 128 transitions. Second operand has 191 states, 191 states have (on average 1.057591623036649) internal successors, (202), 191 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 05:26:34,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:26:34,025 INFO L93 Difference]: Finished difference Result 175 states and 181 transitions. [2023-12-21 05:26:34,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-21 05:26:34,026 INFO L78 Accepts]: Start accepts. Automaton has has 191 states, 191 states have (on average 1.057591623036649) internal successors, (202), 191 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) Word has length 84 [2023-12-21 05:26:34,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:26:34,026 INFO L225 Difference]: With dead ends: 175 [2023-12-21 05:26:34,026 INFO L226 Difference]: Without dead ends: 128 [2023-12-21 05:26:34,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 17 SyntacticMatches, 38 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31455 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=10130, Invalid=43462, Unknown=0, NotChecked=0, Total=53592 [2023-12-21 05:26:34,029 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 39 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:26:34,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 76 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:26:34,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-21 05:26:34,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2023-12-21 05:26:34,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0396825396825398) internal successors, (131), 126 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 05:26:34,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 131 transitions. [2023-12-21 05:26:34,199 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 131 transitions. Word has length 84 [2023-12-21 05:26:34,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:26:34,200 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 131 transitions. [2023-12-21 05:26:34,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 191 states, 191 states have (on average 1.057591623036649) internal successors, (202), 191 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 05:26:34,200 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 131 transitions. [2023-12-21 05:26:34,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 05:26:34,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:26:34,200 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:26:34,205 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 05:26:34,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:34,405 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:26:34,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:26:34,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1658495419, now seen corresponding path program 67 times [2023-12-21 05:26:34,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:26:34,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909573802] [2023-12-21 05:26:34,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:26:34,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:26:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:26:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 595 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:26:37,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:26:37,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909573802] [2023-12-21 05:26:37,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909573802] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:26:37,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164999654] [2023-12-21 05:26:37,316 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:26:37,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:37,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:26:37,317 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 05:26:37,317 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 05:26:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:26:37,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 79 conjunts are in the unsatisfiable core [2023-12-21 05:26:37,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:26:40,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 630 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:26:40,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:26:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 630 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:26:43,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164999654] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:26:43,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:26:43,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78, 78] total 190 [2023-12-21 05:26:43,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617747174] [2023-12-21 05:26:43,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:26:43,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2023-12-21 05:26:43,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:26:43,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2023-12-21 05:26:43,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6490, Invalid=29420, Unknown=0, NotChecked=0, Total=35910 [2023-12-21 05:26:43,127 INFO L87 Difference]: Start difference. First operand 127 states and 131 transitions. Second operand has 190 states, 190 states have (on average 1.063157894736842) internal successors, (202), 190 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 05:26:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:26:44,398 INFO L93 Difference]: Finished difference Result 138 states and 143 transitions. [2023-12-21 05:26:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-21 05:26:44,398 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 190 states have (on average 1.063157894736842) internal successors, (202), 190 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) Word has length 84 [2023-12-21 05:26:44,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:26:44,399 INFO L225 Difference]: With dead ends: 138 [2023-12-21 05:26:44,399 INFO L226 Difference]: Without dead ends: 132 [2023-12-21 05:26:44,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 18 SyntacticMatches, 38 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31170 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=10254, Invalid=42876, Unknown=0, NotChecked=0, Total=53130 [2023-12-21 05:26:44,402 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 173 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:26:44,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 66 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:26:44,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-21 05:26:44,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2023-12-21 05:26:44,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.0393700787401574) internal successors, (132), 127 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:44,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 132 transitions. [2023-12-21 05:26:44,578 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 132 transitions. Word has length 84 [2023-12-21 05:26:44,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:26:44,578 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 132 transitions. [2023-12-21 05:26:44,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 190 states have (on average 1.063157894736842) internal successors, (202), 190 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 05:26:44,578 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 132 transitions. [2023-12-21 05:26:44,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-21 05:26:44,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:26:44,579 INFO L195 NwaCegarLoop]: trace histogram [36, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:26:44,583 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 05:26:44,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:44,783 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:26:44,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:26:44,783 INFO L85 PathProgramCache]: Analyzing trace with hash -909096499, now seen corresponding path program 68 times [2023-12-21 05:26:44,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:26:44,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643499442] [2023-12-21 05:26:44,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:26:44,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:26:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:26:46,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 631 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:26:46,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:26:46,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643499442] [2023-12-21 05:26:46,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643499442] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:26:46,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437483670] [2023-12-21 05:26:46,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:26:46,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:46,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:26:46,541 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 05:26:46,543 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 05:26:46,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:26:46,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:26:46,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-21 05:26:46,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:26:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 666 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:26:50,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:26:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 666 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:26:53,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437483670] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:26:53,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:26:53,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77, 77] total 189 [2023-12-21 05:26:53,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845523678] [2023-12-21 05:26:53,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:26:53,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 189 states [2023-12-21 05:26:53,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:26:53,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2023-12-21 05:26:53,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6488, Invalid=29044, Unknown=0, NotChecked=0, Total=35532 [2023-12-21 05:26:53,733 INFO L87 Difference]: Start difference. First operand 128 states and 132 transitions. Second operand has 189 states, 189 states have (on average 1.0634920634920635) internal successors, (201), 189 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:55,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:26:55,036 INFO L93 Difference]: Finished difference Result 174 states and 178 transitions. [2023-12-21 05:26:55,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-21 05:26:55,036 INFO L78 Accepts]: Start accepts. Automaton has has 189 states, 189 states have (on average 1.0634920634920635) internal successors, (201), 189 states have internal predecessors, (201), 0 states have call successors, (0), 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 85 [2023-12-21 05:26:55,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:26:55,036 INFO L225 Difference]: With dead ends: 174 [2023-12-21 05:26:55,036 INFO L226 Difference]: Without dead ends: 127 [2023-12-21 05:26:55,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 22 SyntacticMatches, 37 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30543 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=10014, Invalid=41288, Unknown=0, NotChecked=0, Total=51302 [2023-12-21 05:26:55,039 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 28 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:26:55,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 85 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:26:55,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-12-21 05:26:55,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2023-12-21 05:26:55,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0317460317460319) internal successors, (130), 126 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:55,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 130 transitions. [2023-12-21 05:26:55,214 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 130 transitions. Word has length 85 [2023-12-21 05:26:55,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:26:55,215 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 130 transitions. [2023-12-21 05:26:55,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 189 states, 189 states have (on average 1.0634920634920635) internal successors, (201), 189 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:26:55,215 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 130 transitions. [2023-12-21 05:26:55,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-21 05:26:55,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:26:55,215 INFO L195 NwaCegarLoop]: trace histogram [36, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:26:55,219 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 05:26:55,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:55,416 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:26:55,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:26:55,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1621637268, now seen corresponding path program 68 times [2023-12-21 05:26:55,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:26:55,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71530179] [2023-12-21 05:26:55,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:26:55,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:26:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:26:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 595 proven. 701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:26:57,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:26:57,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71530179] [2023-12-21 05:26:57,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71530179] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:26:57,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829040927] [2023-12-21 05:26:57,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:26:57,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:26:57,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:26:57,831 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 05:26:57,833 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 05:26:57,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:26:57,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:26:57,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-21 05:26:57,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:27:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 630 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:27:00,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:27:03,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 666 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:27:03,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829040927] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:27:03,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:27:03,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77, 77] total 189 [2023-12-21 05:27:03,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264051549] [2023-12-21 05:27:03,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:27:03,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 189 states [2023-12-21 05:27:03,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:27:03,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2023-12-21 05:27:03,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6523, Invalid=29009, Unknown=0, NotChecked=0, Total=35532 [2023-12-21 05:27:03,870 INFO L87 Difference]: Start difference. First operand 127 states and 130 transitions. Second operand has 189 states, 189 states have (on average 1.0687830687830688) internal successors, (202), 189 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 05:27:05,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:27:05,063 INFO L93 Difference]: Finished difference Result 134 states and 137 transitions. [2023-12-21 05:27:05,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-21 05:27:05,063 INFO L78 Accepts]: Start accepts. Automaton has has 189 states, 189 states have (on average 1.0687830687830688) internal successors, (202), 189 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) Word has length 85 [2023-12-21 05:27:05,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:27:05,064 INFO L225 Difference]: With dead ends: 134 [2023-12-21 05:27:05,064 INFO L226 Difference]: Without dead ends: 128 [2023-12-21 05:27:05,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 21 SyntacticMatches, 38 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30659 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=10153, Invalid=41149, Unknown=0, NotChecked=0, Total=51302 [2023-12-21 05:27:05,067 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 215 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:27:05,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 47 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:27:05,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-21 05:27:05,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2023-12-21 05:27:05,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.031496062992126) internal successors, (131), 127 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 05:27:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 131 transitions. [2023-12-21 05:27:05,246 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 131 transitions. Word has length 85 [2023-12-21 05:27:05,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:27:05,246 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 131 transitions. [2023-12-21 05:27:05,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 189 states, 189 states have (on average 1.0687830687830688) internal successors, (202), 189 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 05:27:05,246 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 131 transitions. [2023-12-21 05:27:05,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 05:27:05,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:27:05,246 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:27:05,251 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 05:27:05,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:05,451 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:27:05,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:27:05,451 INFO L85 PathProgramCache]: Analyzing trace with hash -2107110440, now seen corresponding path program 69 times [2023-12-21 05:27:05,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:27:05,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170015717] [2023-12-21 05:27:05,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:27:05,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:27:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:27:07,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 630 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:27:07,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:27:07,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170015717] [2023-12-21 05:27:07,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170015717] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:27:07,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071131719] [2023-12-21 05:27:07,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:27:07,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:07,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:27:07,906 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 05:27:07,908 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 05:27:07,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2023-12-21 05:27:07,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:27:07,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 81 conjunts are in the unsatisfiable core [2023-12-21 05:27:07,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:27:11,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 666 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:27:11,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:27:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 666 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:27:13,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071131719] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:27:13,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:27:13,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80, 80] total 196 [2023-12-21 05:27:13,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879692588] [2023-12-21 05:27:13,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:27:13,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 196 states [2023-12-21 05:27:13,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:27:13,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2023-12-21 05:27:13,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6809, Invalid=31411, Unknown=0, NotChecked=0, Total=38220 [2023-12-21 05:27:13,916 INFO L87 Difference]: Start difference. First operand 128 states and 131 transitions. Second operand has 196 states, 196 states have (on average 1.0561224489795917) internal successors, (207), 196 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:15,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:27:15,197 INFO L93 Difference]: Finished difference Result 179 states and 185 transitions. [2023-12-21 05:27:15,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-21 05:27:15,198 INFO L78 Accepts]: Start accepts. Automaton has has 196 states, 196 states have (on average 1.0561224489795917) internal successors, (207), 196 states have internal predecessors, (207), 0 states have call successors, (0), 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 86 [2023-12-21 05:27:15,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:27:15,198 INFO L225 Difference]: With dead ends: 179 [2023-12-21 05:27:15,198 INFO L226 Difference]: Without dead ends: 131 [2023-12-21 05:27:15,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 16 SyntacticMatches, 40 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33274 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=10668, Invalid=45738, Unknown=0, NotChecked=0, Total=56406 [2023-12-21 05:27:15,200 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 54 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:27:15,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 80 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:27:15,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-21 05:27:15,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2023-12-21 05:27:15,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.0387596899224807) internal successors, (134), 129 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:15,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2023-12-21 05:27:15,371 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 86 [2023-12-21 05:27:15,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:27:15,372 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2023-12-21 05:27:15,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 196 states, 196 states have (on average 1.0561224489795917) internal successors, (207), 196 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:15,372 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2023-12-21 05:27:15,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 05:27:15,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:27:15,372 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:27:15,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Ended with exit code 0 [2023-12-21 05:27:15,577 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,SelfDestructingSolverStorable143 [2023-12-21 05:27:15,577 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:27:15,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:27:15,577 INFO L85 PathProgramCache]: Analyzing trace with hash -180684780, now seen corresponding path program 69 times [2023-12-21 05:27:15,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:27:15,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128335094] [2023-12-21 05:27:15,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:27:15,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:27:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:27:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 630 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:27:18,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:27:18,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128335094] [2023-12-21 05:27:18,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128335094] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:27:18,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252617589] [2023-12-21 05:27:18,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:27:18,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:18,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:27:18,031 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 05:27:18,033 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 05:27:18,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2023-12-21 05:27:18,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:27:18,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 81 conjunts are in the unsatisfiable core [2023-12-21 05:27:18,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:27:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 666 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:27:21,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:27:24,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 666 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:27:24,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252617589] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:27:24,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:27:24,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80, 80] total 195 [2023-12-21 05:27:24,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434898638] [2023-12-21 05:27:24,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:27:24,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 195 states [2023-12-21 05:27:24,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:27:24,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2023-12-21 05:27:24,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6836, Invalid=30994, Unknown=0, NotChecked=0, Total=37830 [2023-12-21 05:27:24,291 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand has 195 states, 195 states have (on average 1.0615384615384615) internal successors, (207), 195 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:25,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:27:25,893 INFO L93 Difference]: Finished difference Result 141 states and 146 transitions. [2023-12-21 05:27:25,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-21 05:27:25,894 INFO L78 Accepts]: Start accepts. Automaton has has 195 states, 195 states have (on average 1.0615384615384615) internal successors, (207), 195 states have internal predecessors, (207), 0 states have call successors, (0), 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 86 [2023-12-21 05:27:25,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:27:25,894 INFO L225 Difference]: With dead ends: 141 [2023-12-21 05:27:25,894 INFO L226 Difference]: Without dead ends: 135 [2023-12-21 05:27:25,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 18 SyntacticMatches, 39 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32868 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=10796, Invalid=45136, Unknown=0, NotChecked=0, Total=55932 [2023-12-21 05:27:25,897 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 169 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:27:25,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 58 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:27:25,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-12-21 05:27:26,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2023-12-21 05:27:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0384615384615385) internal successors, (135), 130 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:26,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2023-12-21 05:27:26,096 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 86 [2023-12-21 05:27:26,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:27:26,096 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2023-12-21 05:27:26,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 195 states, 195 states have (on average 1.0615384615384615) internal successors, (207), 195 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:26,096 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2023-12-21 05:27:26,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 05:27:26,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:27:26,096 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:27:26,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2023-12-21 05:27:26,298 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,SelfDestructingSolverStorable144 [2023-12-21 05:27:26,298 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:27:26,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:27:26,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2089107820, now seen corresponding path program 70 times [2023-12-21 05:27:26,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:27:26,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126349434] [2023-12-21 05:27:26,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:27:26,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:27:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:27:28,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 667 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:27:28,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:27:28,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126349434] [2023-12-21 05:27:28,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126349434] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:27:28,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744753078] [2023-12-21 05:27:28,690 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:27:28,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:28,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:27:28,691 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 05:27:28,693 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 05:27:28,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:27:28,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:27:28,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 80 conjunts are in the unsatisfiable core [2023-12-21 05:27:28,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:27:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 703 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:27:31,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:27:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 703 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:27:34,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744753078] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:27:34,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:27:34,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79, 79] total 194 [2023-12-21 05:27:34,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069766274] [2023-12-21 05:27:34,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:27:34,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2023-12-21 05:27:34,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:27:34,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2023-12-21 05:27:34,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6834, Invalid=30608, Unknown=0, NotChecked=0, Total=37442 [2023-12-21 05:27:34,786 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 194 states, 194 states have (on average 1.0618556701030928) internal successors, (206), 194 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:35,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:27:35,972 INFO L93 Difference]: Finished difference Result 178 states and 182 transitions. [2023-12-21 05:27:35,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-21 05:27:35,972 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 194 states have (on average 1.0618556701030928) internal successors, (206), 194 states have internal predecessors, (206), 0 states have call successors, (0), 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 87 [2023-12-21 05:27:35,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:27:35,973 INFO L225 Difference]: With dead ends: 178 [2023-12-21 05:27:35,973 INFO L226 Difference]: Without dead ends: 130 [2023-12-21 05:27:35,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 22 SyntacticMatches, 38 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32224 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=10550, Invalid=43506, Unknown=0, NotChecked=0, Total=54056 [2023-12-21 05:27:35,977 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 65 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:27:35,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 85 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:27:35,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-21 05:27:36,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2023-12-21 05:27:36,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.0310077519379846) internal successors, (133), 129 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:36,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 133 transitions. [2023-12-21 05:27:36,160 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 133 transitions. Word has length 87 [2023-12-21 05:27:36,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:27:36,160 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 133 transitions. [2023-12-21 05:27:36,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 194 states have (on average 1.0618556701030928) internal successors, (206), 194 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:36,160 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 133 transitions. [2023-12-21 05:27:36,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 05:27:36,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:27:36,160 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:27:36,165 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 05:27:36,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:36,365 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:27:36,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:27:36,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1001183631, now seen corresponding path program 70 times [2023-12-21 05:27:36,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:27:36,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475242063] [2023-12-21 05:27:36,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:27:36,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:27:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:27:39,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 630 proven. 739 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:27:39,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:27:39,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475242063] [2023-12-21 05:27:39,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475242063] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:27:39,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398440485] [2023-12-21 05:27:39,662 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:27:39,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:39,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:27:39,663 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 05:27:39,664 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 05:27:39,712 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:27:39,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:27:39,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 80 conjunts are in the unsatisfiable core [2023-12-21 05:27:39,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:27:43,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 666 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:27:43,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:27:46,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 703 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:27:46,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398440485] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:27:46,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:27:46,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79, 79] total 194 [2023-12-21 05:27:46,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686301235] [2023-12-21 05:27:46,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:27:46,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2023-12-21 05:27:46,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:27:46,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2023-12-21 05:27:46,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6870, Invalid=30572, Unknown=0, NotChecked=0, Total=37442 [2023-12-21 05:27:46,589 INFO L87 Difference]: Start difference. First operand 130 states and 133 transitions. Second operand has 194 states, 194 states have (on average 1.0670103092783505) internal successors, (207), 194 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:48,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:27:48,045 INFO L93 Difference]: Finished difference Result 137 states and 140 transitions. [2023-12-21 05:27:48,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-21 05:27:48,045 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 194 states have (on average 1.0670103092783505) internal successors, (207), 194 states have internal predecessors, (207), 0 states have call successors, (0), 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 87 [2023-12-21 05:27:48,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:27:48,045 INFO L225 Difference]: With dead ends: 137 [2023-12-21 05:27:48,045 INFO L226 Difference]: Without dead ends: 131 [2023-12-21 05:27:48,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 21 SyntacticMatches, 39 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32343 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=10693, Invalid=43363, Unknown=0, NotChecked=0, Total=54056 [2023-12-21 05:27:48,048 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 273 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:27:48,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 41 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:27:48,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-21 05:27:48,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-12-21 05:27:48,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0307692307692307) internal successors, (134), 130 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:48,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 134 transitions. [2023-12-21 05:27:48,238 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 134 transitions. Word has length 87 [2023-12-21 05:27:48,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:27:48,238 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 134 transitions. [2023-12-21 05:27:48,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 194 states have (on average 1.0670103092783505) internal successors, (207), 194 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:48,238 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 134 transitions. [2023-12-21 05:27:48,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 05:27:48,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:27:48,238 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:27:48,243 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 05:27:48,443 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,SelfDestructingSolverStorable146 [2023-12-21 05:27:48,443 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:27:48,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:27:48,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1810179685, now seen corresponding path program 71 times [2023-12-21 05:27:48,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:27:48,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241881369] [2023-12-21 05:27:48,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:27:48,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:27:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:27:50,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 666 proven. 740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:27:50,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:27:50,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241881369] [2023-12-21 05:27:50,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241881369] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:27:50,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901866125] [2023-12-21 05:27:50,968 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:27:50,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:27:50,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:27:50,969 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 05:27:50,971 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 05:27:51,038 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2023-12-21 05:27:51,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:27:51,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 83 conjunts are in the unsatisfiable core [2023-12-21 05:27:51,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:27:53,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 703 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:27:53,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:27:56,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 703 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:27:56,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901866125] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:27:56,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:27:56,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82, 82] total 201 [2023-12-21 05:27:56,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345982861] [2023-12-21 05:27:56,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:27:56,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 201 states [2023-12-21 05:27:56,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:27:56,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2023-12-21 05:27:56,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7163, Invalid=33037, Unknown=0, NotChecked=0, Total=40200 [2023-12-21 05:27:56,859 INFO L87 Difference]: Start difference. First operand 131 states and 134 transitions. Second operand has 201 states, 201 states have (on average 1.054726368159204) internal successors, (212), 201 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:58,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:27:58,305 INFO L93 Difference]: Finished difference Result 183 states and 189 transitions. [2023-12-21 05:27:58,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-21 05:27:58,305 INFO L78 Accepts]: Start accepts. Automaton has has 201 states, 201 states have (on average 1.054726368159204) internal successors, (212), 201 states have internal predecessors, (212), 0 states have call successors, (0), 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 88 [2023-12-21 05:27:58,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:27:58,305 INFO L225 Difference]: With dead ends: 183 [2023-12-21 05:27:58,306 INFO L226 Difference]: Without dead ends: 134 [2023-12-21 05:27:58,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 17 SyntacticMatches, 40 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34912 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=11220, Invalid=48072, Unknown=0, NotChecked=0, Total=59292 [2023-12-21 05:27:58,308 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 32 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:27:58,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 82 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:27:58,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-21 05:27:58,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2023-12-21 05:27:58,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.0378787878787878) internal successors, (137), 132 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:58,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2023-12-21 05:27:58,488 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 88 [2023-12-21 05:27:58,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:27:58,488 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2023-12-21 05:27:58,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 201 states, 201 states have (on average 1.054726368159204) internal successors, (212), 201 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:27:58,489 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2023-12-21 05:27:58,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 05:27:58,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:27:58,489 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:27:58,495 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 05:27:58,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2023-12-21 05:27:58,693 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:27:58,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:27:58,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2129852187, now seen corresponding path program 71 times [2023-12-21 05:27:58,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:27:58,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285659898] [2023-12-21 05:27:58,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:27:58,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:27:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:28:01,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 666 proven. 740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:28:01,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:28:01,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285659898] [2023-12-21 05:28:01,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285659898] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:28:01,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730628791] [2023-12-21 05:28:01,673 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:28:01,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:28:01,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:28:01,674 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 05:28:01,676 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 05:28:01,739 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2023-12-21 05:28:01,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:28:01,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 83 conjunts are in the unsatisfiable core [2023-12-21 05:28:01,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:28:04,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 703 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:28:04,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:28:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 703 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:28:07,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730628791] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:28:07,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:28:07,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82, 82] total 200 [2023-12-21 05:28:07,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258460769] [2023-12-21 05:28:07,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:28:07,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 200 states [2023-12-21 05:28:07,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:28:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2023-12-21 05:28:07,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7191, Invalid=32609, Unknown=0, NotChecked=0, Total=39800 [2023-12-21 05:28:07,367 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand has 200 states, 200 states have (on average 1.06) internal successors, (212), 200 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:08,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:28:08,876 INFO L93 Difference]: Finished difference Result 144 states and 149 transitions. [2023-12-21 05:28:08,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-21 05:28:08,877 INFO L78 Accepts]: Start accepts. Automaton has has 200 states, 200 states have (on average 1.06) internal successors, (212), 200 states have internal predecessors, (212), 0 states have call successors, (0), 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 88 [2023-12-21 05:28:08,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:28:08,877 INFO L225 Difference]: With dead ends: 144 [2023-12-21 05:28:08,877 INFO L226 Difference]: Without dead ends: 138 [2023-12-21 05:28:08,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 18 SyntacticMatches, 40 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34611 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=11352, Invalid=47454, Unknown=0, NotChecked=0, Total=58806 [2023-12-21 05:28:08,889 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 374 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:28:08,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 54 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:28:08,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-12-21 05:28:09,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2023-12-21 05:28:09,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.037593984962406) internal successors, (138), 133 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:09,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2023-12-21 05:28:09,074 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 88 [2023-12-21 05:28:09,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:28:09,074 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2023-12-21 05:28:09,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 200 states, 200 states have (on average 1.06) internal successors, (212), 200 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:09,075 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2023-12-21 05:28:09,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 05:28:09,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:28:09,075 INFO L195 NwaCegarLoop]: trace histogram [38, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:28:09,079 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 05:28:09,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2023-12-21 05:28:09,279 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:28:09,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:28:09,280 INFO L85 PathProgramCache]: Analyzing trace with hash 818061421, now seen corresponding path program 72 times [2023-12-21 05:28:09,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:28:09,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642774593] [2023-12-21 05:28:09,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:28:09,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:28:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:28:11,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 704 proven. 740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:28:11,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:28:11,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642774593] [2023-12-21 05:28:11,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642774593] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:28:11,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232702738] [2023-12-21 05:28:11,830 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:28:11,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:28:11,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:28:11,831 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 05:28:11,833 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 05:28:11,919 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2023-12-21 05:28:11,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:28:11,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-21 05:28:11,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:28:14,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 741 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:28:14,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:28:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 741 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:28:18,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232702738] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:28:18,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:28:18,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 81, 81] total 199 [2023-12-21 05:28:18,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131337739] [2023-12-21 05:28:18,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:28:18,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 199 states [2023-12-21 05:28:18,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:28:18,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2023-12-21 05:28:18,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7189, Invalid=32213, Unknown=0, NotChecked=0, Total=39402 [2023-12-21 05:28:18,570 INFO L87 Difference]: Start difference. First operand 134 states and 138 transitions. Second operand has 199 states, 199 states have (on average 1.0603015075376885) internal successors, (211), 199 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:19,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:28:19,870 INFO L93 Difference]: Finished difference Result 182 states and 186 transitions. [2023-12-21 05:28:19,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-21 05:28:19,870 INFO L78 Accepts]: Start accepts. Automaton has has 199 states, 199 states have (on average 1.0603015075376885) internal successors, (211), 199 states have internal predecessors, (211), 0 states have call successors, (0), 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 89 [2023-12-21 05:28:19,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:28:19,871 INFO L225 Difference]: With dead ends: 182 [2023-12-21 05:28:19,871 INFO L226 Difference]: Without dead ends: 133 [2023-12-21 05:28:19,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 22 SyntacticMatches, 39 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33950 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=11100, Invalid=45782, Unknown=0, NotChecked=0, Total=56882 [2023-12-21 05:28:19,873 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 43 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:28:19,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 50 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:28:19,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-12-21 05:28:20,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-12-21 05:28:20,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.0303030303030303) internal successors, (136), 132 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:20,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 136 transitions. [2023-12-21 05:28:20,067 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 136 transitions. Word has length 89 [2023-12-21 05:28:20,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:28:20,067 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 136 transitions. [2023-12-21 05:28:20,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 199 states, 199 states have (on average 1.0603015075376885) internal successors, (211), 199 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:20,067 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 136 transitions. [2023-12-21 05:28:20,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 05:28:20,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:28:20,067 INFO L195 NwaCegarLoop]: trace histogram [38, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:28:20,074 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 05:28:20,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:28:20,274 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:28:20,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:28:20,275 INFO L85 PathProgramCache]: Analyzing trace with hash 128561652, now seen corresponding path program 72 times [2023-12-21 05:28:20,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:28:20,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682579873] [2023-12-21 05:28:20,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:28:20,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:28:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:28:23,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 666 proven. 778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:28:23,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:28:23,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682579873] [2023-12-21 05:28:23,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682579873] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:28:23,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992982215] [2023-12-21 05:28:23,680 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:28:23,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:28:23,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:28:23,681 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 05:28:23,706 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 05:28:23,750 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2023-12-21 05:28:23,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:28:23,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-21 05:28:23,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:28:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 703 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:28:26,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:28:29,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 741 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:28:29,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992982215] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:28:29,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:28:29,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 81, 81] total 199 [2023-12-21 05:28:29,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805051467] [2023-12-21 05:28:29,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:28:29,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 199 states [2023-12-21 05:28:29,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:28:29,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2023-12-21 05:28:29,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7226, Invalid=32176, Unknown=0, NotChecked=0, Total=39402 [2023-12-21 05:28:29,920 INFO L87 Difference]: Start difference. First operand 133 states and 136 transitions. Second operand has 199 states, 199 states have (on average 1.065326633165829) internal successors, (212), 199 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:31,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:28:31,324 INFO L93 Difference]: Finished difference Result 140 states and 143 transitions. [2023-12-21 05:28:31,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-21 05:28:31,324 INFO L78 Accepts]: Start accepts. Automaton has has 199 states, 199 states have (on average 1.065326633165829) internal successors, (212), 199 states have internal predecessors, (212), 0 states have call successors, (0), 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 89 [2023-12-21 05:28:31,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:28:31,324 INFO L225 Difference]: With dead ends: 140 [2023-12-21 05:28:31,324 INFO L226 Difference]: Without dead ends: 134 [2023-12-21 05:28:31,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 21 SyntacticMatches, 40 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34072 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=11247, Invalid=45635, Unknown=0, NotChecked=0, Total=56882 [2023-12-21 05:28:31,327 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 218 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:28:31,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 54 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:28:31,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-21 05:28:31,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2023-12-21 05:28:31,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.0300751879699248) internal successors, (137), 133 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:31,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2023-12-21 05:28:31,518 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 89 [2023-12-21 05:28:31,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:28:31,518 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2023-12-21 05:28:31,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 199 states, 199 states have (on average 1.065326633165829) internal successors, (212), 199 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:31,518 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2023-12-21 05:28:31,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 05:28:31,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:28:31,518 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:28:31,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Ended with exit code 0 [2023-12-21 05:28:31,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:28:31,722 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:28:31,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:28:31,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1147814280, now seen corresponding path program 73 times [2023-12-21 05:28:31,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:28:31,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274109948] [2023-12-21 05:28:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:28:31,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:28:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:28:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 703 proven. 779 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:28:34,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:28:34,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274109948] [2023-12-21 05:28:34,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274109948] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:28:34,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262032165] [2023-12-21 05:28:34,343 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:28:34,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:28:34,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:28:34,344 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 05:28:34,345 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 05:28:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:28:34,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 85 conjunts are in the unsatisfiable core [2023-12-21 05:28:34,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:28:37,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 741 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:28:37,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:28:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 741 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:28:40,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262032165] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:28:40,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:28:40,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84, 84] total 206 [2023-12-21 05:28:40,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094604438] [2023-12-21 05:28:40,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:28:40,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 206 states [2023-12-21 05:28:40,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:28:40,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2023-12-21 05:28:40,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7526, Invalid=34704, Unknown=0, NotChecked=0, Total=42230 [2023-12-21 05:28:40,727 INFO L87 Difference]: Start difference. First operand 134 states and 137 transitions. Second operand has 206 states, 206 states have (on average 1.0533980582524272) internal successors, (217), 206 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:42,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:28:42,321 INFO L93 Difference]: Finished difference Result 187 states and 193 transitions. [2023-12-21 05:28:42,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-21 05:28:42,322 INFO L78 Accepts]: Start accepts. Automaton has has 206 states, 206 states have (on average 1.0533980582524272) internal successors, (217), 206 states have internal predecessors, (217), 0 states have call successors, (0), 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 90 [2023-12-21 05:28:42,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:28:42,322 INFO L225 Difference]: With dead ends: 187 [2023-12-21 05:28:42,322 INFO L226 Difference]: Without dead ends: 137 [2023-12-21 05:28:42,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 17 SyntacticMatches, 41 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36708 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=11786, Invalid=50464, Unknown=0, NotChecked=0, Total=62250 [2023-12-21 05:28:42,324 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 48 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:28:42,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 80 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:28:42,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-21 05:28:42,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2023-12-21 05:28:42,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.037037037037037) internal successors, (140), 135 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 140 transitions. [2023-12-21 05:28:42,522 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 140 transitions. Word has length 90 [2023-12-21 05:28:42,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:28:42,522 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 140 transitions. [2023-12-21 05:28:42,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 206 states, 206 states have (on average 1.0533980582524272) internal successors, (217), 206 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:42,522 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 140 transitions. [2023-12-21 05:28:42,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 05:28:42,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:28:42,522 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:28:42,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2023-12-21 05:28:42,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:28:42,727 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:28:42,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:28:42,727 INFO L85 PathProgramCache]: Analyzing trace with hash 789500724, now seen corresponding path program 73 times [2023-12-21 05:28:42,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:28:42,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450204900] [2023-12-21 05:28:42,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:28:42,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:28:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:28:45,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 703 proven. 779 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:28:45,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:28:45,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450204900] [2023-12-21 05:28:45,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450204900] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:28:45,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521121021] [2023-12-21 05:28:45,756 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:28:45,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:28:45,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:28:45,757 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 05:28:45,758 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 05:28:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:28:45,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 85 conjunts are in the unsatisfiable core [2023-12-21 05:28:45,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:28:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 741 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:28:48,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:28:51,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 741 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:28:51,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521121021] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:28:51,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:28:51,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84, 84] total 205 [2023-12-21 05:28:51,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867562112] [2023-12-21 05:28:51,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:28:51,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 205 states [2023-12-21 05:28:51,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:28:51,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2023-12-21 05:28:51,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7555, Invalid=34265, Unknown=0, NotChecked=0, Total=41820 [2023-12-21 05:28:51,653 INFO L87 Difference]: Start difference. First operand 136 states and 140 transitions. Second operand has 205 states, 205 states have (on average 1.0585365853658537) internal successors, (217), 205 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:53,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:28:53,150 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2023-12-21 05:28:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-21 05:28:53,150 INFO L78 Accepts]: Start accepts. Automaton has has 205 states, 205 states have (on average 1.0585365853658537) internal successors, (217), 205 states have internal predecessors, (217), 0 states have call successors, (0), 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 90 [2023-12-21 05:28:53,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:28:53,150 INFO L225 Difference]: With dead ends: 147 [2023-12-21 05:28:53,150 INFO L226 Difference]: Without dead ends: 141 [2023-12-21 05:28:53,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 18 SyntacticMatches, 41 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36399 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=11922, Invalid=49830, Unknown=0, NotChecked=0, Total=61752 [2023-12-21 05:28:53,153 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 121 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:28:53,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 66 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:28:53,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-21 05:28:53,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2023-12-21 05:28:53,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.036764705882353) internal successors, (141), 136 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:53,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 141 transitions. [2023-12-21 05:28:53,355 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 141 transitions. Word has length 90 [2023-12-21 05:28:53,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:28:53,355 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 141 transitions. [2023-12-21 05:28:53,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 205 states, 205 states have (on average 1.0585365853658537) internal successors, (217), 205 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:28:53,355 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 141 transitions. [2023-12-21 05:28:53,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 05:28:53,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:28:53,356 INFO L195 NwaCegarLoop]: trace histogram [39, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:28:53,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Forceful destruction successful, exit code 0 [2023-12-21 05:28:53,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:28:53,563 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:28:53,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:28:53,563 INFO L85 PathProgramCache]: Analyzing trace with hash -2078128268, now seen corresponding path program 74 times [2023-12-21 05:28:53,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:28:53,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548878322] [2023-12-21 05:28:53,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:28:53,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:28:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:28:55,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 742 proven. 779 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:28:55,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:28:55,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548878322] [2023-12-21 05:28:55,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548878322] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:28:55,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938630797] [2023-12-21 05:28:55,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:28:55,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:28:55,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:28:55,826 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 05:28:55,827 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 05:28:55,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:28:55,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:28:55,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 84 conjunts are in the unsatisfiable core [2023-12-21 05:28:55,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:28:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 780 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:28:58,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:29:01,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 780 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:29:01,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938630797] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:29:01,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:29:01,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83, 83] total 204 [2023-12-21 05:29:01,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441279726] [2023-12-21 05:29:01,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:29:01,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 204 states [2023-12-21 05:29:01,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:29:01,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2023-12-21 05:29:01,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7553, Invalid=33859, Unknown=0, NotChecked=0, Total=41412 [2023-12-21 05:29:01,676 INFO L87 Difference]: Start difference. First operand 137 states and 141 transitions. Second operand has 204 states, 204 states have (on average 1.0588235294117647) internal successors, (216), 204 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:29:02,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:29:02,818 INFO L93 Difference]: Finished difference Result 186 states and 190 transitions. [2023-12-21 05:29:02,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-21 05:29:02,818 INFO L78 Accepts]: Start accepts. Automaton has has 204 states, 204 states have (on average 1.0588235294117647) internal successors, (216), 204 states have internal predecessors, (216), 0 states have call successors, (0), 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 91 [2023-12-21 05:29:02,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:29:02,819 INFO L225 Difference]: With dead ends: 186 [2023-12-21 05:29:02,819 INFO L226 Difference]: Without dead ends: 136 [2023-12-21 05:29:02,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 21 SyntacticMatches, 41 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35841 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=11664, Invalid=48116, Unknown=0, NotChecked=0, Total=59780 [2023-12-21 05:29:02,821 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 48 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 05:29:02,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 76 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 05:29:02,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-21 05:29:03,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2023-12-21 05:29:03,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.0296296296296297) internal successors, (139), 135 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:29:03,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 139 transitions. [2023-12-21 05:29:03,016 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 139 transitions. Word has length 91 [2023-12-21 05:29:03,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:29:03,016 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 139 transitions. [2023-12-21 05:29:03,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 204 states, 204 states have (on average 1.0588235294117647) internal successors, (216), 204 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:29:03,016 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 139 transitions. [2023-12-21 05:29:03,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 05:29:03,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:29:03,016 INFO L195 NwaCegarLoop]: trace histogram [39, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:29:03,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Forceful destruction successful, exit code 0 [2023-12-21 05:29:03,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:29:03,222 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:29:03,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:29:03,222 INFO L85 PathProgramCache]: Analyzing trace with hash -2033195887, now seen corresponding path program 74 times [2023-12-21 05:29:03,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:29:03,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697739094] [2023-12-21 05:29:03,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:29:03,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:29:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:29:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 703 proven. 818 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:29:06,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:29:06,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697739094] [2023-12-21 05:29:06,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697739094] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:29:06,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836074140] [2023-12-21 05:29:06,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:29:06,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:29:06,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:29:06,087 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 05:29:06,114 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 05:29:06,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:29:06,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:29:06,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 84 conjunts are in the unsatisfiable core [2023-12-21 05:29:06,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:29:09,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 741 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:29:09,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:29:13,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 780 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:29:13,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836074140] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:29:13,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:29:13,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83, 83] total 204 [2023-12-21 05:29:13,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606265691] [2023-12-21 05:29:13,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:29:13,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 204 states [2023-12-21 05:29:13,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:29:13,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2023-12-21 05:29:13,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7591, Invalid=33821, Unknown=0, NotChecked=0, Total=41412 [2023-12-21 05:29:13,363 INFO L87 Difference]: Start difference. First operand 136 states and 139 transitions. Second operand has 204 states, 204 states have (on average 1.0637254901960784) internal successors, (217), 204 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:29:14,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:29:14,709 INFO L93 Difference]: Finished difference Result 143 states and 146 transitions. [2023-12-21 05:29:14,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-21 05:29:14,709 INFO L78 Accepts]: Start accepts. Automaton has has 204 states, 204 states have (on average 1.0637254901960784) internal successors, (217), 204 states have internal predecessors, (217), 0 states have call successors, (0), 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 91 [2023-12-21 05:29:14,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:29:14,710 INFO L225 Difference]: With dead ends: 143 [2023-12-21 05:29:14,710 INFO L226 Difference]: Without dead ends: 137 [2023-12-21 05:29:14,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 21 SyntacticMatches, 41 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35846 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=11815, Invalid=47965, Unknown=0, NotChecked=0, Total=59780 [2023-12-21 05:29:14,712 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 136 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:29:14,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 56 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:29:14,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-21 05:29:14,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-12-21 05:29:14,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.0294117647058822) internal successors, (140), 136 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:29:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2023-12-21 05:29:14,920 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 91 [2023-12-21 05:29:14,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:29:14,920 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 140 transitions. [2023-12-21 05:29:14,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 204 states, 204 states have (on average 1.0637254901960784) internal successors, (217), 204 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:29:14,921 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 140 transitions. [2023-12-21 05:29:14,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 05:29:14,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:29:14,921 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:29:14,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2023-12-21 05:29:15,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:29:15,126 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:29:15,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:29:15,126 INFO L85 PathProgramCache]: Analyzing trace with hash 557178747, now seen corresponding path program 75 times [2023-12-21 05:29:15,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:29:15,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755337691] [2023-12-21 05:29:15,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:29:15,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:29:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:29:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 741 proven. 819 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:29:17,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:29:17,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755337691] [2023-12-21 05:29:17,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755337691] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:29:17,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126232015] [2023-12-21 05:29:17,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:29:17,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:29:17,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:29:17,829 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 05:29:17,831 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 05:29:17,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2023-12-21 05:29:17,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:29:17,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 87 conjunts are in the unsatisfiable core [2023-12-21 05:29:17,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:29:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 780 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:29:22,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:29:25,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 780 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:29:25,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126232015] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:29:25,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:29:25,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86, 86] total 211 [2023-12-21 05:29:25,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977801191] [2023-12-21 05:29:25,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:29:25,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 211 states [2023-12-21 05:29:25,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:29:25,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2023-12-21 05:29:25,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7898, Invalid=36412, Unknown=0, NotChecked=0, Total=44310 [2023-12-21 05:29:25,989 INFO L87 Difference]: Start difference. First operand 137 states and 140 transitions. Second operand has 211 states, 211 states have (on average 1.052132701421801) internal successors, (222), 211 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:29:27,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:29:27,452 INFO L93 Difference]: Finished difference Result 191 states and 197 transitions. [2023-12-21 05:29:27,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-21 05:29:27,452 INFO L78 Accepts]: Start accepts. Automaton has has 211 states, 211 states have (on average 1.052132701421801) internal successors, (222), 211 states have internal predecessors, (222), 0 states have call successors, (0), 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 92 [2023-12-21 05:29:27,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:29:27,452 INFO L225 Difference]: With dead ends: 191 [2023-12-21 05:29:27,452 INFO L226 Difference]: Without dead ends: 140 [2023-12-21 05:29:27,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 17 SyntacticMatches, 42 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38549 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=12366, Invalid=52914, Unknown=0, NotChecked=0, Total=65280 [2023-12-21 05:29:27,455 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 33 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:29:27,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 93 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:29:27,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-21 05:29:27,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2023-12-21 05:29:27,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.036231884057971) internal successors, (143), 138 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:29:27,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 143 transitions. [2023-12-21 05:29:27,668 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 143 transitions. Word has length 92 [2023-12-21 05:29:27,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:29:27,668 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 143 transitions. [2023-12-21 05:29:27,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 211 states, 211 states have (on average 1.052132701421801) internal successors, (222), 211 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:29:27,669 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 143 transitions. [2023-12-21 05:29:27,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 05:29:27,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:29:27,669 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:29:27,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Forceful destruction successful, exit code 0 [2023-12-21 05:29:27,874 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,SelfDestructingSolverStorable155 [2023-12-21 05:29:27,874 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:29:27,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:29:27,874 INFO L85 PathProgramCache]: Analyzing trace with hash 539812987, now seen corresponding path program 75 times [2023-12-21 05:29:27,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:29:27,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590045641] [2023-12-21 05:29:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:29:27,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:29:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:29:31,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 741 proven. 819 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:29:31,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:29:31,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590045641] [2023-12-21 05:29:31,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590045641] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:29:31,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193992665] [2023-12-21 05:29:31,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:29:31,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:29:31,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:29:31,173 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 05:29:31,175 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 05:29:31,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2023-12-21 05:29:31,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:29:31,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 87 conjunts are in the unsatisfiable core [2023-12-21 05:29:31,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:29:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 780 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:29:34,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:29:38,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 780 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:29:38,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193992665] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:29:38,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:29:38,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86, 86] total 210 [2023-12-21 05:29:38,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43073196] [2023-12-21 05:29:38,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:29:38,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 210 states [2023-12-21 05:29:38,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:29:38,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2023-12-21 05:29:38,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7928, Invalid=35962, Unknown=0, NotChecked=0, Total=43890 [2023-12-21 05:29:38,627 INFO L87 Difference]: Start difference. First operand 139 states and 143 transitions. Second operand has 210 states, 210 states have (on average 1.0571428571428572) internal successors, (222), 210 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:29:40,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:29:40,200 INFO L93 Difference]: Finished difference Result 150 states and 155 transitions. [2023-12-21 05:29:40,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-21 05:29:40,200 INFO L78 Accepts]: Start accepts. Automaton has has 210 states, 210 states have (on average 1.0571428571428572) internal successors, (222), 210 states have internal predecessors, (222), 0 states have call successors, (0), 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 92 [2023-12-21 05:29:40,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:29:40,201 INFO L225 Difference]: With dead ends: 150 [2023-12-21 05:29:40,201 INFO L226 Difference]: Without dead ends: 144 [2023-12-21 05:29:40,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 18 SyntacticMatches, 42 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38232 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=12506, Invalid=52264, Unknown=0, NotChecked=0, Total=64770 [2023-12-21 05:29:40,203 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 277 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:29:40,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 58 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:29:40,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-21 05:29:40,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 140. [2023-12-21 05:29:40,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.0359712230215827) internal successors, (144), 139 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:29:40,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 144 transitions. [2023-12-21 05:29:40,405 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 144 transitions. Word has length 92 [2023-12-21 05:29:40,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:29:40,405 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 144 transitions. [2023-12-21 05:29:40,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 210 states, 210 states have (on average 1.0571428571428572) internal successors, (222), 210 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:29:40,405 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 144 transitions. [2023-12-21 05:29:40,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 05:29:40,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:29:40,406 INFO L195 NwaCegarLoop]: trace histogram [40, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:29:40,410 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 05:29:40,608 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,SelfDestructingSolverStorable156 [2023-12-21 05:29:40,608 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:29:40,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:29:40,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1228513523, now seen corresponding path program 76 times [2023-12-21 05:29:40,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:29:40,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939401073] [2023-12-21 05:29:40,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:29:40,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:29:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:29:43,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 781 proven. 819 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:29:43,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:29:43,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939401073] [2023-12-21 05:29:43,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939401073] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:29:43,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178820850] [2023-12-21 05:29:43,386 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:29:43,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:29:43,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:29:43,387 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 05:29:43,388 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 05:29:43,439 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:29:43,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:29:43,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 86 conjunts are in the unsatisfiable core [2023-12-21 05:29:43,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:29:47,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 820 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:29:47,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:29:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 820 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:29:51,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178820850] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:29:51,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:29:51,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85, 85] total 209 [2023-12-21 05:29:51,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335651699] [2023-12-21 05:29:51,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:29:51,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 209 states [2023-12-21 05:29:51,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:29:51,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2023-12-21 05:29:51,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7926, Invalid=35546, Unknown=0, NotChecked=0, Total=43472 [2023-12-21 05:29:51,638 INFO L87 Difference]: Start difference. First operand 140 states and 144 transitions. Second operand has 209 states, 209 states have (on average 1.0574162679425838) internal successors, (221), 209 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:29:53,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:29:53,053 INFO L93 Difference]: Finished difference Result 190 states and 194 transitions. [2023-12-21 05:29:53,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-21 05:29:53,053 INFO L78 Accepts]: Start accepts. Automaton has has 209 states, 209 states have (on average 1.0574162679425838) internal successors, (221), 209 states have internal predecessors, (221), 0 states have call successors, (0), 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 93 [2023-12-21 05:29:53,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:29:53,053 INFO L225 Difference]: With dead ends: 190 [2023-12-21 05:29:53,053 INFO L226 Difference]: Without dead ends: 139 [2023-12-21 05:29:53,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 22 SyntacticMatches, 41 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37537 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=12242, Invalid=50508, Unknown=0, NotChecked=0, Total=62750 [2023-12-21 05:29:53,056 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 42 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:29:53,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 66 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:29:53,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-12-21 05:29:53,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2023-12-21 05:29:53,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.0289855072463767) internal successors, (142), 138 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:29:53,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 142 transitions. [2023-12-21 05:29:53,280 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 142 transitions. Word has length 93 [2023-12-21 05:29:53,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:29:53,280 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 142 transitions. [2023-12-21 05:29:53,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 209 states, 209 states have (on average 1.0574162679425838) internal successors, (221), 209 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:29:53,280 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 142 transitions. [2023-12-21 05:29:53,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 05:29:53,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:29:53,281 INFO L195 NwaCegarLoop]: trace histogram [40, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:29:53,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Forceful destruction successful, exit code 0 [2023-12-21 05:29:53,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2023-12-21 05:29:53,486 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:29:53,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:29:53,486 INFO L85 PathProgramCache]: Analyzing trace with hash 108979028, now seen corresponding path program 76 times [2023-12-21 05:29:53,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:29:53,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384553516] [2023-12-21 05:29:53,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:29:53,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:29:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:29:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 741 proven. 859 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:29:57,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:29:57,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384553516] [2023-12-21 05:29:57,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384553516] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:29:57,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862717918] [2023-12-21 05:29:57,085 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:29:57,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:29:57,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:29:57,108 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 05:29:57,110 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 05:29:57,160 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:29:57,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:29:57,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 86 conjunts are in the unsatisfiable core [2023-12-21 05:29:57,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:30:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 780 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:30:01,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:30:04,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 820 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:30:04,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862717918] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:30:04,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:30:04,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85, 85] total 209 [2023-12-21 05:30:04,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586750873] [2023-12-21 05:30:04,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:30:04,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 209 states [2023-12-21 05:30:04,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:30:04,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2023-12-21 05:30:04,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7965, Invalid=35507, Unknown=0, NotChecked=0, Total=43472 [2023-12-21 05:30:04,410 INFO L87 Difference]: Start difference. First operand 139 states and 142 transitions. Second operand has 209 states, 209 states have (on average 1.062200956937799) internal successors, (222), 209 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:30:05,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:30:05,831 INFO L93 Difference]: Finished difference Result 146 states and 149 transitions. [2023-12-21 05:30:05,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-21 05:30:05,831 INFO L78 Accepts]: Start accepts. Automaton has has 209 states, 209 states have (on average 1.062200956937799) internal successors, (222), 209 states have internal predecessors, (222), 0 states have call successors, (0), 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 93 [2023-12-21 05:30:05,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:30:05,831 INFO L225 Difference]: With dead ends: 146 [2023-12-21 05:30:05,831 INFO L226 Difference]: Without dead ends: 140 [2023-12-21 05:30:05,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 21 SyntacticMatches, 42 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37665 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=12397, Invalid=50353, Unknown=0, NotChecked=0, Total=62750 [2023-12-21 05:30:05,834 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 173 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:30:05,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 36 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:30:05,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-21 05:30:06,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-12-21 05:30:06,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.0287769784172662) internal successors, (143), 139 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:30:06,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 143 transitions. [2023-12-21 05:30:06,061 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 143 transitions. Word has length 93 [2023-12-21 05:30:06,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:30:06,061 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 143 transitions. [2023-12-21 05:30:06,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 209 states, 209 states have (on average 1.062200956937799) internal successors, (222), 209 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:30:06,061 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 143 transitions. [2023-12-21 05:30:06,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 05:30:06,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:30:06,062 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:30:06,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Forceful destruction successful, exit code 0 [2023-12-21 05:30:06,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:30:06,267 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:30:06,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:30:06,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1754875624, now seen corresponding path program 77 times [2023-12-21 05:30:06,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:30:06,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184586697] [2023-12-21 05:30:06,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:30:06,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:30:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:30:09,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 780 proven. 860 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:30:09,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:30:09,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184586697] [2023-12-21 05:30:09,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184586697] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:30:09,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583984990] [2023-12-21 05:30:09,154 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:30:09,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:30:09,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:30:09,155 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 05:30:09,156 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 05:30:09,213 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2023-12-21 05:30:09,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:30:09,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 89 conjunts are in the unsatisfiable core [2023-12-21 05:30:09,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:30:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 820 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:30:13,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:30:17,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 820 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:30:17,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583984990] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:30:17,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:30:17,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88, 88] total 216 [2023-12-21 05:30:17,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938170657] [2023-12-21 05:30:17,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:30:17,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 216 states [2023-12-21 05:30:17,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:30:17,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2023-12-21 05:30:17,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8279, Invalid=38161, Unknown=0, NotChecked=0, Total=46440 [2023-12-21 05:30:17,967 INFO L87 Difference]: Start difference. First operand 140 states and 143 transitions. Second operand has 216 states, 216 states have (on average 1.0509259259259258) internal successors, (227), 216 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:30:19,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:30:19,766 INFO L93 Difference]: Finished difference Result 195 states and 201 transitions. [2023-12-21 05:30:19,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-12-21 05:30:19,766 INFO L78 Accepts]: Start accepts. Automaton has has 216 states, 216 states have (on average 1.0509259259259258) internal successors, (227), 216 states have internal predecessors, (227), 0 states have call successors, (0), 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 94 [2023-12-21 05:30:19,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:30:19,767 INFO L225 Difference]: With dead ends: 195 [2023-12-21 05:30:19,767 INFO L226 Difference]: Without dead ends: 143 [2023-12-21 05:30:19,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 17 SyntacticMatches, 43 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40435 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=12960, Invalid=55422, Unknown=0, NotChecked=0, Total=68382 [2023-12-21 05:30:19,769 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 59 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:30:19,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 51 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:30:19,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-12-21 05:30:19,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2023-12-21 05:30:19,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.0354609929078014) internal successors, (146), 141 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:30:19,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 146 transitions. [2023-12-21 05:30:19,989 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 146 transitions. Word has length 94 [2023-12-21 05:30:19,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:30:19,989 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 146 transitions. [2023-12-21 05:30:19,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 216 states, 216 states have (on average 1.0509259259259258) internal successors, (227), 216 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:30:19,989 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 146 transitions. [2023-12-21 05:30:19,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 05:30:19,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:30:19,989 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:30:19,994 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 05:30:20,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:30:20,194 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:30:20,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:30:20,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2057164372, now seen corresponding path program 77 times [2023-12-21 05:30:20,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:30:20,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794537897] [2023-12-21 05:30:20,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:30:20,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:30:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:30:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 780 proven. 860 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:30:23,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:30:23,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794537897] [2023-12-21 05:30:23,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794537897] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:30:23,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588332939] [2023-12-21 05:30:23,462 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:30:23,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:30:23,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:30:23,463 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 05:30:23,465 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 05:30:23,519 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2023-12-21 05:30:23,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:30:23,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 89 conjunts are in the unsatisfiable core [2023-12-21 05:30:23,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:30:27,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 820 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:30:27,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:30:31,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 820 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:30:31,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588332939] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:30:31,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:30:31,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88, 88] total 215 [2023-12-21 05:30:31,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099992137] [2023-12-21 05:30:31,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:30:31,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 215 states [2023-12-21 05:30:31,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:30:31,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2023-12-21 05:30:31,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8310, Invalid=37700, Unknown=0, NotChecked=0, Total=46010 [2023-12-21 05:30:31,335 INFO L87 Difference]: Start difference. First operand 142 states and 146 transitions. Second operand has 215 states, 215 states have (on average 1.0558139534883721) internal successors, (227), 215 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:30:33,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:30:33,210 INFO L93 Difference]: Finished difference Result 153 states and 158 transitions. [2023-12-21 05:30:33,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-12-21 05:30:33,210 INFO L78 Accepts]: Start accepts. Automaton has has 215 states, 215 states have (on average 1.0558139534883721) internal successors, (227), 215 states have internal predecessors, (227), 0 states have call successors, (0), 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 94 [2023-12-21 05:30:33,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:30:33,211 INFO L225 Difference]: With dead ends: 153 [2023-12-21 05:30:33,211 INFO L226 Difference]: Without dead ends: 147 [2023-12-21 05:30:33,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 18 SyntacticMatches, 43 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40110 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=13104, Invalid=54756, Unknown=0, NotChecked=0, Total=67860 [2023-12-21 05:30:33,213 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 129 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:30:33,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 58 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:30:33,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-21 05:30:33,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2023-12-21 05:30:33,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.0352112676056338) internal successors, (147), 142 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:30:33,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2023-12-21 05:30:33,454 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 94 [2023-12-21 05:30:33,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:30:33,454 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2023-12-21 05:30:33,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 215 states, 215 states have (on average 1.0558139534883721) internal successors, (227), 215 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:30:33,455 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2023-12-21 05:30:33,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 05:30:33,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:30:33,455 INFO L195 NwaCegarLoop]: trace histogram [41, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:30:33,459 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 05:30:33,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:30:33,660 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:30:33,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:30:33,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1435260844, now seen corresponding path program 78 times [2023-12-21 05:30:33,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:30:33,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149793165] [2023-12-21 05:30:33,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:30:33,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:30:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:30:36,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 821 proven. 860 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:30:36,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:30:36,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149793165] [2023-12-21 05:30:36,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149793165] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:30:36,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376855727] [2023-12-21 05:30:36,475 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:30:36,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:30:36,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:30:36,476 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 05:30:36,476 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 05:30:36,593 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2023-12-21 05:30:36,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:30:36,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-21 05:30:36,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:30:40,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 861 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:30:40,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:30:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 861 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:30:43,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376855727] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:30:43,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:30:43,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 87, 87] total 214 [2023-12-21 05:30:43,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430780774] [2023-12-21 05:30:43,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:30:43,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 214 states [2023-12-21 05:30:43,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:30:43,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2023-12-21 05:30:43,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8308, Invalid=37274, Unknown=0, NotChecked=0, Total=45582 [2023-12-21 05:30:43,546 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand has 214 states, 214 states have (on average 1.0560747663551402) internal successors, (226), 214 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:30:44,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:30:44,941 INFO L93 Difference]: Finished difference Result 194 states and 198 transitions. [2023-12-21 05:30:44,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-21 05:30:44,941 INFO L78 Accepts]: Start accepts. Automaton has has 214 states, 214 states have (on average 1.0560747663551402) internal successors, (226), 214 states have internal predecessors, (226), 0 states have call successors, (0), 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 95 [2023-12-21 05:30:44,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:30:44,941 INFO L225 Difference]: With dead ends: 194 [2023-12-21 05:30:44,941 INFO L226 Difference]: Without dead ends: 142 [2023-12-21 05:30:44,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 21 SyntacticMatches, 43 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39524 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=12834, Invalid=52958, Unknown=0, NotChecked=0, Total=65792 [2023-12-21 05:30:44,944 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 33 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:30:44,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 90 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:30:44,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-12-21 05:30:45,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2023-12-21 05:30:45,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.0283687943262412) internal successors, (145), 141 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:30:45,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 145 transitions. [2023-12-21 05:30:45,176 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 145 transitions. Word has length 95 [2023-12-21 05:30:45,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:30:45,176 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 145 transitions. [2023-12-21 05:30:45,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 214 states, 214 states have (on average 1.0560747663551402) internal successors, (226), 214 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:30:45,176 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 145 transitions. [2023-12-21 05:30:45,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 05:30:45,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:30:45,177 INFO L195 NwaCegarLoop]: trace histogram [41, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:30:45,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Ended with exit code 0 [2023-12-21 05:30:45,378 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,SelfDestructingSolverStorable161 [2023-12-21 05:30:45,378 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:30:45,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:30:45,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1316891313, now seen corresponding path program 78 times [2023-12-21 05:30:45,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:30:45,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097195544] [2023-12-21 05:30:45,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:30:45,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:30:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:30:48,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 780 proven. 901 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:30:48,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:30:48,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097195544] [2023-12-21 05:30:48,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097195544] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:30:48,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541798272] [2023-12-21 05:30:48,797 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:30:48,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:30:48,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:30:48,798 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 05:30:48,800 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 05:30:48,860 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2023-12-21 05:30:48,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:30:48,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-21 05:30:48,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:30:52,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 820 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:30:52,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:30:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 861 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:30:56,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541798272] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:30:56,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:30:56,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 87, 87] total 214 [2023-12-21 05:30:56,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078720473] [2023-12-21 05:30:56,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:30:56,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 214 states [2023-12-21 05:30:56,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:30:56,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2023-12-21 05:30:56,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8348, Invalid=37234, Unknown=0, NotChecked=0, Total=45582 [2023-12-21 05:30:56,464 INFO L87 Difference]: Start difference. First operand 142 states and 145 transitions. Second operand has 214 states, 214 states have (on average 1.060747663551402) internal successors, (227), 214 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:30:58,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:30:58,032 INFO L93 Difference]: Finished difference Result 149 states and 152 transitions. [2023-12-21 05:30:58,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-21 05:30:58,032 INFO L78 Accepts]: Start accepts. Automaton has has 214 states, 214 states have (on average 1.060747663551402) internal successors, (227), 214 states have internal predecessors, (227), 0 states have call successors, (0), 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 95 [2023-12-21 05:30:58,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:30:58,033 INFO L225 Difference]: With dead ends: 149 [2023-12-21 05:30:58,033 INFO L226 Difference]: Without dead ends: 143 [2023-12-21 05:30:58,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 21 SyntacticMatches, 43 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39529 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=12993, Invalid=52799, Unknown=0, NotChecked=0, Total=65792 [2023-12-21 05:30:58,035 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 276 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:30:58,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 73 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:30:58,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-12-21 05:30:58,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2023-12-21 05:30:58,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.028169014084507) internal successors, (146), 142 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:30:58,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 146 transitions. [2023-12-21 05:30:58,270 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 146 transitions. Word has length 95 [2023-12-21 05:30:58,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:30:58,270 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 146 transitions. [2023-12-21 05:30:58,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 214 states, 214 states have (on average 1.060747663551402) internal successors, (227), 214 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:30:58,271 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 146 transitions. [2023-12-21 05:30:58,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 05:30:58,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:30:58,271 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:30:58,278 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 05:30:58,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:30:58,476 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:30:58,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:30:58,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1330666843, now seen corresponding path program 79 times [2023-12-21 05:30:58,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:30:58,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588234995] [2023-12-21 05:30:58,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:30:58,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:30:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:31:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 820 proven. 902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:31:01,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:31:01,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588234995] [2023-12-21 05:31:01,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588234995] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:31:01,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410554484] [2023-12-21 05:31:01,192 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:31:01,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:31:01,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:31:01,193 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 05:31:01,218 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 05:31:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:31:01,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 91 conjunts are in the unsatisfiable core [2023-12-21 05:31:01,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:31:05,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 861 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:31:05,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:31:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 861 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:31:08,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410554484] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:31:08,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:31:08,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90, 90] total 221 [2023-12-21 05:31:08,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273977446] [2023-12-21 05:31:08,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:31:08,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 221 states [2023-12-21 05:31:08,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:31:08,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2023-12-21 05:31:08,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8669, Invalid=39951, Unknown=0, NotChecked=0, Total=48620 [2023-12-21 05:31:08,781 INFO L87 Difference]: Start difference. First operand 143 states and 146 transitions. Second operand has 221 states, 221 states have (on average 1.0497737556561086) internal successors, (232), 221 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:31:10,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:31:10,304 INFO L93 Difference]: Finished difference Result 199 states and 205 transitions. [2023-12-21 05:31:10,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-12-21 05:31:10,304 INFO L78 Accepts]: Start accepts. Automaton has has 221 states, 221 states have (on average 1.0497737556561086) internal successors, (232), 221 states have internal predecessors, (232), 0 states have call successors, (0), 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 96 [2023-12-21 05:31:10,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:31:10,305 INFO L225 Difference]: With dead ends: 199 [2023-12-21 05:31:10,305 INFO L226 Difference]: Without dead ends: 146 [2023-12-21 05:31:10,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 17 SyntacticMatches, 44 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42366 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=13568, Invalid=57988, Unknown=0, NotChecked=0, Total=71556 [2023-12-21 05:31:10,308 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 44 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:31:10,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 96 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:31:10,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-21 05:31:10,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2023-12-21 05:31:10,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.0347222222222223) internal successors, (149), 144 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:31:10,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 149 transitions. [2023-12-21 05:31:10,539 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 149 transitions. Word has length 96 [2023-12-21 05:31:10,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:31:10,539 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 149 transitions. [2023-12-21 05:31:10,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 221 states, 221 states have (on average 1.0497737556561086) internal successors, (232), 221 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:31:10,539 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 149 transitions. [2023-12-21 05:31:10,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 05:31:10,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:31:10,539 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:31:10,544 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 05:31:10,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:31:10,744 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:31:10,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:31:10,744 INFO L85 PathProgramCache]: Analyzing trace with hash -699766309, now seen corresponding path program 79 times [2023-12-21 05:31:10,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:31:10,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108602128] [2023-12-21 05:31:10,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:31:10,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:31:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:31:13,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 820 proven. 902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:31:13,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:31:13,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108602128] [2023-12-21 05:31:13,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108602128] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:31:13,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759533384] [2023-12-21 05:31:13,857 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 05:31:13,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:31:13,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:31:13,858 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 05:31:13,860 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 05:31:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:31:13,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 91 conjunts are in the unsatisfiable core [2023-12-21 05:31:13,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:31:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 861 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:31:17,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:31:21,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 861 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:31:21,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759533384] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:31:21,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:31:21,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90, 90] total 220 [2023-12-21 05:31:21,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973777045] [2023-12-21 05:31:21,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:31:21,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 220 states [2023-12-21 05:31:21,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:31:21,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2023-12-21 05:31:21,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8701, Invalid=39479, Unknown=0, NotChecked=0, Total=48180 [2023-12-21 05:31:21,629 INFO L87 Difference]: Start difference. First operand 145 states and 149 transitions. Second operand has 220 states, 220 states have (on average 1.0545454545454545) internal successors, (232), 220 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:31:23,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:31:23,471 INFO L93 Difference]: Finished difference Result 156 states and 161 transitions. [2023-12-21 05:31:23,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-12-21 05:31:23,471 INFO L78 Accepts]: Start accepts. Automaton has has 220 states, 220 states have (on average 1.0545454545454545) internal successors, (232), 220 states have internal predecessors, (232), 0 states have call successors, (0), 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 96 [2023-12-21 05:31:23,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:31:23,472 INFO L225 Difference]: With dead ends: 156 [2023-12-21 05:31:23,472 INFO L226 Difference]: Without dead ends: 150 [2023-12-21 05:31:23,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 18 SyntacticMatches, 44 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42033 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=13716, Invalid=57306, Unknown=0, NotChecked=0, Total=71022 [2023-12-21 05:31:23,475 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 125 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 05:31:23,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 66 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 05:31:23,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-21 05:31:23,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 146. [2023-12-21 05:31:23,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.0344827586206897) internal successors, (150), 145 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:31:23,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2023-12-21 05:31:23,710 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 96 [2023-12-21 05:31:23,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:31:23,710 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 150 transitions. [2023-12-21 05:31:23,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 220 states, 220 states have (on average 1.0545454545454545) internal successors, (232), 220 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:31:23,710 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 150 transitions. [2023-12-21 05:31:23,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 05:31:23,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:31:23,711 INFO L195 NwaCegarLoop]: trace histogram [42, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:31:23,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Ended with exit code 0 [2023-12-21 05:31:23,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:31:23,915 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:31:23,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:31:23,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1000766035, now seen corresponding path program 80 times [2023-12-21 05:31:23,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:31:23,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638581943] [2023-12-21 05:31:23,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:31:23,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:31:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:31:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 862 proven. 902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:31:26,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:31:26,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638581943] [2023-12-21 05:31:26,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638581943] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:31:26,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438773950] [2023-12-21 05:31:26,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:31:26,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:31:26,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:31:26,703 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 05:31:26,704 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 05:31:26,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:31:26,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:31:26,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 90 conjunts are in the unsatisfiable core [2023-12-21 05:31:26,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:31:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 903 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:31:31,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-21 05:31:31,775 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 05:31:31,779 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 05:31:31,781 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 05:31:31,810 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 05:31:31,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:31:31,976 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 98 with TraceHistMax 42,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 177 known predicates. [2023-12-21 05:31:31,979 INFO L445 BasicCegarLoop]: Path program histogram: [80, 79, 2, 1, 1, 1, 1, 1] [2023-12-21 05:31:31,980 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 05:31:31,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 05:31:31 BoogieIcfgContainer [2023-12-21 05:31:31,981 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 05:31:31,981 INFO L158 Benchmark]: Toolchain (without parser) took 883321.21ms. Allocated memory was 285.2MB in the beginning and 714.1MB in the end (delta: 428.9MB). Free memory was 246.8MB in the beginning and 309.7MB in the end (delta: -62.9MB). Peak memory consumption was 367.9MB. Max. memory is 8.0GB. [2023-12-21 05:31:31,981 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 198.2MB. Free memory is still 152.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 05:31:31,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.97ms. Allocated memory is still 285.2MB. Free memory was 246.8MB in the beginning and 235.7MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 05:31:31,981 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.21ms. Allocated memory is still 285.2MB. Free memory was 235.7MB in the beginning and 234.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 05:31:31,981 INFO L158 Benchmark]: Boogie Preprocessor took 40.25ms. Allocated memory is still 285.2MB. Free memory was 234.2MB in the beginning and 232.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 05:31:31,981 INFO L158 Benchmark]: RCFGBuilder took 275.07ms. Allocated memory is still 285.2MB. Free memory was 232.1MB in the beginning and 220.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 05:31:31,982 INFO L158 Benchmark]: TraceAbstraction took 882790.38ms. Allocated memory was 285.2MB in the beginning and 714.1MB in the end (delta: 428.9MB). Free memory was 219.5MB in the beginning and 309.7MB in the end (delta: -90.2MB). Peak memory consumption was 340.7MB. Max. memory is 8.0GB. [2023-12-21 05:31:31,982 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 198.2MB. Free memory is still 152.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 185.97ms. Allocated memory is still 285.2MB. Free memory was 246.8MB in the beginning and 235.7MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.21ms. Allocated memory is still 285.2MB. Free memory was 235.7MB in the beginning and 234.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.25ms. Allocated memory is still 285.2MB. Free memory was 234.2MB in the beginning and 232.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 275.07ms. Allocated memory is still 285.2MB. Free memory was 232.1MB in the beginning and 220.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 882790.38ms. Allocated memory was 285.2MB in the beginning and 714.1MB in the end (delta: 428.9MB). Free memory was 219.5MB in the beginning and 309.7MB in the end (delta: -90.2MB). Peak memory consumption was 340.7MB. 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 analyzing trace of length 98 with TraceHistMax 42,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 177 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 882.7s, OverallIterations: 166, TraceHistogramMax: 42, PathProgramHistogramMax: 80, EmptinessCheckTime: 0.1s, AutomataDifference: 116.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15456 SdHoareTripleChecker+Valid, 29.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15456 mSDsluCounter, 9290 SdHoareTripleChecker+Invalid, 25.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8323 mSDsCounter, 962 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 79697 IncrementalHoareTripleChecker+Invalid, 80659 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 962 mSolverCounterUnsat, 967 mSDtfsCounter, 79697 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29789 GetRequests, 3104 SyntacticMatches, 3824 SemanticMatches, 22861 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2401326 ImplicationChecksByTransitivity, 650.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=165, InterpolantAutomatonStates: 8317, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.8s AutomataMinimizationTime, 165 MinimizatonAttempts, 206 StatesRemovedByMinimization, 81 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 5.6s SatisfiabilityAnalysisTime, 700.1s InterpolantComputationTime, 18119 NumberOfCodeBlocks, 18119 NumberOfCodeBlocksAsserted, 1255 NumberOfCheckSat, 26652 ConstructedInterpolants, 0 QuantifiedInterpolants, 436194 SizeOfPredicates, 1141 NumberOfNonLiveVariables, 32695 ConjunctsInSsa, 8054 ConjunctsInUnsatCore, 484 InterpolantComputations, 6 PerfectInterpolantSequences, 143000/290984 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