/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/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:41:49,852 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:41:49,907 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 11:41:49,910 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:41:49,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:41:49,935 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:41:49,936 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:41:49,936 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:41:49,937 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:41:49,937 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:41:49,937 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:41:49,937 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:41:49,938 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:41:49,938 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:41:49,938 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:41:49,938 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:41:49,939 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:41:49,939 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:41:49,939 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:41:49,939 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:41:49,940 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:41:49,940 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:41:49,940 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:41:49,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:41:49,941 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:41:49,941 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:41:49,941 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:41:49,941 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:41:49,942 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:41:49,942 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:41:49,942 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:41:49,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:41:49,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:41:49,942 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:41:49,942 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:41:49,943 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:41:49,943 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:41:49,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:41:49,943 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:41:49,943 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:41:49,943 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:41:49,946 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:41:49,946 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:41:49,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:41:50,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:41:50,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:41:50,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:41:50,143 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:41:50,143 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:41:50,144 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2023-12-21 11:41:51,150 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:41:51,306 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:41:51,307 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2023-12-21 11:41:51,316 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fbaf4a4b/a9d628dbf75347ecaa2caa9a750bfb5a/FLAGda1ea2d8b [2023-12-21 11:41:51,331 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fbaf4a4b/a9d628dbf75347ecaa2caa9a750bfb5a [2023-12-21 11:41:51,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:41:51,336 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:41:51,337 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:41:51,337 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:41:51,340 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:41:51,341 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:41:51" (1/1) ... [2023-12-21 11:41:51,341 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@360134a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:51, skipping insertion in model container [2023-12-21 11:41:51,341 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:41:51" (1/1) ... [2023-12-21 11:41:51,374 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:41:51,503 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c[6117,6130] [2023-12-21 11:41:51,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:41:51,512 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:41:51,533 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c[6117,6130] [2023-12-21 11:41:51,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:41:51,544 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:41:51,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:51 WrapperNode [2023-12-21 11:41:51,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:41:51,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:41:51,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:41:51,546 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:41:51,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:51" (1/1) ... [2023-12-21 11:41:51,568 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:51" (1/1) ... [2023-12-21 11:41:51,597 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 217 [2023-12-21 11:41:51,597 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:41:51,597 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:41:51,598 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:41:51,598 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:41:51,611 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:51" (1/1) ... [2023-12-21 11:41:51,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:51" (1/1) ... [2023-12-21 11:41:51,612 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:51" (1/1) ... [2023-12-21 11:41:51,622 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 11:41:51,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:51" (1/1) ... [2023-12-21 11:41:51,622 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:51" (1/1) ... [2023-12-21 11:41:51,633 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:51" (1/1) ... [2023-12-21 11:41:51,637 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:51" (1/1) ... [2023-12-21 11:41:51,638 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:51" (1/1) ... [2023-12-21 11:41:51,639 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:51" (1/1) ... [2023-12-21 11:41:51,641 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:41:51,641 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:41:51,641 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:41:51,641 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:41:51,642 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:51" (1/1) ... [2023-12-21 11:41:51,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:41:51,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:41:51,701 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 11:41:51,703 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 11:41:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:41:51,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:41:51,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:41:51,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:41:51,781 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:41:51,782 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:41:51,999 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:41:52,066 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:41:52,066 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 11:41:52,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:41:52 BoogieIcfgContainer [2023-12-21 11:41:52,067 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:41:52,068 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:41:52,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:41:52,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:41:52,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:41:51" (1/3) ... [2023-12-21 11:41:52,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bad1954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:41:52, skipping insertion in model container [2023-12-21 11:41:52,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:41:51" (2/3) ... [2023-12-21 11:41:52,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bad1954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:41:52, skipping insertion in model container [2023-12-21 11:41:52,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:41:52" (3/3) ... [2023-12-21 11:41:52,072 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2023-12-21 11:41:52,083 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:41:52,083 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:41:52,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:41:52,127 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;@59813c43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:41:52,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:41:52,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 50 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 11:41:52,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-21 11:41:52,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:52,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:52,135 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:52,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:52,139 INFO L85 PathProgramCache]: Analyzing trace with hash -417268953, now seen corresponding path program 1 times [2023-12-21 11:41:52,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:52,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539172785] [2023-12-21 11:41:52,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:52,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:52,345 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 11:41:52,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:52,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539172785] [2023-12-21 11:41:52,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539172785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:52,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:52,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:41:52,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393505934] [2023-12-21 11:41:52,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:52,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 11:41:52,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:52,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 11:41:52,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:41:52,389 INFO L87 Difference]: Start difference. First operand has 51 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 50 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) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 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 11:41:52,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:52,426 INFO L93 Difference]: Finished difference Result 81 states and 137 transitions. [2023-12-21 11:41:52,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 11:41:52,428 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-21 11:41:52,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:52,445 INFO L225 Difference]: With dead ends: 81 [2023-12-21 11:41:52,446 INFO L226 Difference]: Without dead ends: 49 [2023-12-21 11:41:52,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:41:52,451 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:52,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:52,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-21 11:41:52,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-21 11:41:52,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 48 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 11:41:52,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 82 transitions. [2023-12-21 11:41:52,484 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 82 transitions. Word has length 16 [2023-12-21 11:41:52,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:52,484 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 82 transitions. [2023-12-21 11:41:52,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 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 11:41:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 82 transitions. [2023-12-21 11:41:52,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-21 11:41:52,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:52,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:52,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:41:52,486 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:52,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:52,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1004074967, now seen corresponding path program 1 times [2023-12-21 11:41:52,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:52,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454591439] [2023-12-21 11:41:52,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:52,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:52,665 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 11:41:52,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:52,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454591439] [2023-12-21 11:41:52,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454591439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:52,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:52,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:41:52,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093379089] [2023-12-21 11:41:52,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:52,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:41:52,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:52,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:41:52,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:41:52,668 INFO L87 Difference]: Start difference. First operand 49 states and 82 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:52,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:52,719 INFO L93 Difference]: Finished difference Result 81 states and 131 transitions. [2023-12-21 11:41:52,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:41:52,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-21 11:41:52,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:52,722 INFO L225 Difference]: With dead ends: 81 [2023-12-21 11:41:52,722 INFO L226 Difference]: Without dead ends: 49 [2023-12-21 11:41:52,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:41:52,724 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:52,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 218 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:52,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-21 11:41:52,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-21 11:41:52,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:52,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 66 transitions. [2023-12-21 11:41:52,735 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 66 transitions. Word has length 16 [2023-12-21 11:41:52,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:52,735 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 66 transitions. [2023-12-21 11:41:52,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:52,735 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 66 transitions. [2023-12-21 11:41:52,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-21 11:41:52,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:52,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:52,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:41:52,736 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:52,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:52,737 INFO L85 PathProgramCache]: Analyzing trace with hash 871528204, now seen corresponding path program 1 times [2023-12-21 11:41:52,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:52,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179021777] [2023-12-21 11:41:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:52,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:52,847 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 11:41:52,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:52,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179021777] [2023-12-21 11:41:52,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179021777] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:52,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:52,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:41:52,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467950045] [2023-12-21 11:41:52,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:52,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:41:52,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:52,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:41:52,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:41:52,849 INFO L87 Difference]: Start difference. First operand 49 states and 66 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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 11:41:52,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:52,947 INFO L93 Difference]: Finished difference Result 223 states and 342 transitions. [2023-12-21 11:41:52,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:41:52,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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) Word has length 31 [2023-12-21 11:41:52,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:52,949 INFO L225 Difference]: With dead ends: 223 [2023-12-21 11:41:52,949 INFO L226 Difference]: Without dead ends: 194 [2023-12-21 11:41:52,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:41:52,950 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 264 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:52,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 402 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:41:52,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-21 11:41:52,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 76. [2023-12-21 11:41:52,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.4533333333333334) internal successors, (109), 75 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 11:41:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 109 transitions. [2023-12-21 11:41:52,964 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 109 transitions. Word has length 31 [2023-12-21 11:41:52,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:52,964 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 109 transitions. [2023-12-21 11:41:52,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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 11:41:52,964 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 109 transitions. [2023-12-21 11:41:52,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 11:41:52,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:52,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:52,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:41:52,965 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:52,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:52,966 INFO L85 PathProgramCache]: Analyzing trace with hash -739726020, now seen corresponding path program 1 times [2023-12-21 11:41:52,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:52,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150329816] [2023-12-21 11:41:52,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:52,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:53,023 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 11:41:53,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:53,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150329816] [2023-12-21 11:41:53,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150329816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:53,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:53,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:41:53,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564041320] [2023-12-21 11:41:53,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:53,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:41:53,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:53,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:41:53,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:53,025 INFO L87 Difference]: Start difference. First operand 76 states and 109 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 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 11:41:53,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:53,040 INFO L93 Difference]: Finished difference Result 177 states and 268 transitions. [2023-12-21 11:41:53,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:41:53,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-21 11:41:53,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:53,041 INFO L225 Difference]: With dead ends: 177 [2023-12-21 11:41:53,041 INFO L226 Difference]: Without dead ends: 121 [2023-12-21 11:41:53,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:53,042 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 26 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:53,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 101 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:53,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-21 11:41:53,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2023-12-21 11:41:53,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4830508474576272) internal successors, (175), 118 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:53,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 175 transitions. [2023-12-21 11:41:53,049 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 175 transitions. Word has length 33 [2023-12-21 11:41:53,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:53,049 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 175 transitions. [2023-12-21 11:41:53,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 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 11:41:53,049 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 175 transitions. [2023-12-21 11:41:53,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 11:41:53,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:53,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:53,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:41:53,051 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:53,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:53,051 INFO L85 PathProgramCache]: Analyzing trace with hash -737581068, now seen corresponding path program 1 times [2023-12-21 11:41:53,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:53,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969526317] [2023-12-21 11:41:53,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:53,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:53,216 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 11:41:53,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:53,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969526317] [2023-12-21 11:41:53,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969526317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:53,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:53,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:41:53,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783079115] [2023-12-21 11:41:53,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:53,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:41:53,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:53,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:41:53,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:41:53,219 INFO L87 Difference]: Start difference. First operand 119 states and 175 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 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 11:41:53,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:53,270 INFO L93 Difference]: Finished difference Result 220 states and 331 transitions. [2023-12-21 11:41:53,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:41:53,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-21 11:41:53,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:53,271 INFO L225 Difference]: With dead ends: 220 [2023-12-21 11:41:53,271 INFO L226 Difference]: Without dead ends: 121 [2023-12-21 11:41:53,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:41:53,276 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 97 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:53,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 140 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:53,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-21 11:41:53,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2023-12-21 11:41:53,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4661016949152543) internal successors, (173), 118 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:53,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 173 transitions. [2023-12-21 11:41:53,291 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 173 transitions. Word has length 33 [2023-12-21 11:41:53,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:53,292 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 173 transitions. [2023-12-21 11:41:53,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 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 11:41:53,292 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 173 transitions. [2023-12-21 11:41:53,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 11:41:53,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:53,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:53,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:41:53,293 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:53,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:53,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1404220512, now seen corresponding path program 1 times [2023-12-21 11:41:53,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:53,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467597213] [2023-12-21 11:41:53,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:53,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:53,453 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 11:41:53,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:53,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467597213] [2023-12-21 11:41:53,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467597213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:53,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:53,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:41:53,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291977449] [2023-12-21 11:41:53,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:53,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:41:53,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:53,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:41:53,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:41:53,457 INFO L87 Difference]: Start difference. First operand 119 states and 173 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 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 11:41:53,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:53,479 INFO L93 Difference]: Finished difference Result 127 states and 182 transitions. [2023-12-21 11:41:53,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:41:53,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-21 11:41:53,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:53,481 INFO L225 Difference]: With dead ends: 127 [2023-12-21 11:41:53,481 INFO L226 Difference]: Without dead ends: 125 [2023-12-21 11:41:53,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:41:53,484 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:53,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 295 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:53,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-21 11:41:53,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2023-12-21 11:41:53,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.4426229508196722) internal successors, (176), 122 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 11:41:53,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 176 transitions. [2023-12-21 11:41:53,502 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 176 transitions. Word has length 34 [2023-12-21 11:41:53,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:53,502 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 176 transitions. [2023-12-21 11:41:53,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 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 11:41:53,503 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 176 transitions. [2023-12-21 11:41:53,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 11:41:53,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:53,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:53,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:41:53,504 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:53,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:53,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1768252524, now seen corresponding path program 1 times [2023-12-21 11:41:53,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:53,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036804814] [2023-12-21 11:41:53,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:53,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:53,533 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 11:41:53,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:53,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036804814] [2023-12-21 11:41:53,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036804814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:53,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:53,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:41:53,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719570227] [2023-12-21 11:41:53,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:53,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:41:53,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:53,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:41:53,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:53,535 INFO L87 Difference]: Start difference. First operand 123 states and 176 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 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 11:41:53,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:53,547 INFO L93 Difference]: Finished difference Result 237 states and 349 transitions. [2023-12-21 11:41:53,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:41:53,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-21 11:41:53,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:53,548 INFO L225 Difference]: With dead ends: 237 [2023-12-21 11:41:53,548 INFO L226 Difference]: Without dead ends: 177 [2023-12-21 11:41:53,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:53,551 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 36 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:53,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 139 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:53,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-21 11:41:53,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2023-12-21 11:41:53,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.4540229885057472) internal successors, (253), 174 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:53,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 253 transitions. [2023-12-21 11:41:53,560 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 253 transitions. Word has length 35 [2023-12-21 11:41:53,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:53,560 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 253 transitions. [2023-12-21 11:41:53,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 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 11:41:53,561 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 253 transitions. [2023-12-21 11:41:53,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 11:41:53,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:53,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:53,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:41:53,562 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:53,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:53,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1901058708, now seen corresponding path program 1 times [2023-12-21 11:41:53,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:53,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883383748] [2023-12-21 11:41:53,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:53,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:53,593 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 11:41:53,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:53,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883383748] [2023-12-21 11:41:53,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883383748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:53,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:53,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:41:53,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569133385] [2023-12-21 11:41:53,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:53,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:41:53,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:53,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:41:53,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:53,594 INFO L87 Difference]: Start difference. First operand 175 states and 253 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 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 11:41:53,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:53,613 INFO L93 Difference]: Finished difference Result 457 states and 673 transitions. [2023-12-21 11:41:53,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:41:53,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-21 11:41:53,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:53,614 INFO L225 Difference]: With dead ends: 457 [2023-12-21 11:41:53,614 INFO L226 Difference]: Without dead ends: 304 [2023-12-21 11:41:53,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:53,616 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 34 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:53,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 145 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:53,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-12-21 11:41:53,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 302. [2023-12-21 11:41:53,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 1.4451827242524917) internal successors, (435), 301 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:53,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 435 transitions. [2023-12-21 11:41:53,623 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 435 transitions. Word has length 35 [2023-12-21 11:41:53,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:53,624 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 435 transitions. [2023-12-21 11:41:53,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 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 11:41:53,624 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 435 transitions. [2023-12-21 11:41:53,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 11:41:53,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:53,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:53,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:41:53,627 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:53,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:53,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1505175148, now seen corresponding path program 1 times [2023-12-21 11:41:53,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:53,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613213785] [2023-12-21 11:41:53,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:53,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:53,673 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 11:41:53,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:53,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613213785] [2023-12-21 11:41:53,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613213785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:53,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:53,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:41:53,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760636901] [2023-12-21 11:41:53,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:53,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:41:53,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:53,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:41:53,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:53,675 INFO L87 Difference]: Start difference. First operand 302 states and 435 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 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 11:41:53,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:53,694 INFO L93 Difference]: Finished difference Result 814 states and 1177 transitions. [2023-12-21 11:41:53,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:41:53,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-21 11:41:53,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:53,697 INFO L225 Difference]: With dead ends: 814 [2023-12-21 11:41:53,698 INFO L226 Difference]: Without dead ends: 534 [2023-12-21 11:41:53,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:53,701 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 32 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:53,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 147 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:53,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2023-12-21 11:41:53,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2023-12-21 11:41:53,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 1.4143126177024483) internal successors, (751), 531 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:53,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 751 transitions. [2023-12-21 11:41:53,715 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 751 transitions. Word has length 35 [2023-12-21 11:41:53,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:53,715 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 751 transitions. [2023-12-21 11:41:53,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 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 11:41:53,716 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 751 transitions. [2023-12-21 11:41:53,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 11:41:53,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:53,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:53,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:41:53,721 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:53,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:53,721 INFO L85 PathProgramCache]: Analyzing trace with hash -217205247, now seen corresponding path program 1 times [2023-12-21 11:41:53,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:53,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044832394] [2023-12-21 11:41:53,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:53,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:41:53,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:53,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044832394] [2023-12-21 11:41:53,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044832394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:53,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:53,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:41:53,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382772596] [2023-12-21 11:41:53,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:53,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:41:53,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:53,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:41:53,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:41:53,826 INFO L87 Difference]: Start difference. First operand 532 states and 751 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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 11:41:53,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:53,900 INFO L93 Difference]: Finished difference Result 2040 states and 2903 transitions. [2023-12-21 11:41:53,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:41:53,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-21 11:41:53,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:53,905 INFO L225 Difference]: With dead ends: 2040 [2023-12-21 11:41:53,905 INFO L226 Difference]: Without dead ends: 1670 [2023-12-21 11:41:53,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:41:53,906 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 155 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:53,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 276 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:53,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2023-12-21 11:41:53,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 972. [2023-12-21 11:41:53,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.411946446961895) internal successors, (1371), 971 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:53,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1371 transitions. [2023-12-21 11:41:53,934 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1371 transitions. Word has length 49 [2023-12-21 11:41:53,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:53,935 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1371 transitions. [2023-12-21 11:41:53,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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 11:41:53,935 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1371 transitions. [2023-12-21 11:41:53,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 11:41:53,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:53,936 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:53,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:41:53,937 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:53,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:53,937 INFO L85 PathProgramCache]: Analyzing trace with hash -842861311, now seen corresponding path program 1 times [2023-12-21 11:41:53,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:53,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085094745] [2023-12-21 11:41:53,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:53,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:54,010 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:41:54,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:54,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085094745] [2023-12-21 11:41:54,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085094745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:54,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:54,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:41:54,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260639880] [2023-12-21 11:41:54,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:54,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:41:54,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:54,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:41:54,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:41:54,012 INFO L87 Difference]: Start difference. First operand 972 states and 1371 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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 11:41:54,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:54,110 INFO L93 Difference]: Finished difference Result 2548 states and 3623 transitions. [2023-12-21 11:41:54,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:41:54,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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 49 [2023-12-21 11:41:54,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:54,115 INFO L225 Difference]: With dead ends: 2548 [2023-12-21 11:41:54,115 INFO L226 Difference]: Without dead ends: 2038 [2023-12-21 11:41:54,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:41:54,117 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 157 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:54,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 263 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:41:54,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2023-12-21 11:41:54,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 1664. [2023-12-21 11:41:54,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1663 states have (on average 1.4088995790739627) internal successors, (2343), 1663 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:54,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2343 transitions. [2023-12-21 11:41:54,160 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2343 transitions. Word has length 49 [2023-12-21 11:41:54,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:54,161 INFO L495 AbstractCegarLoop]: Abstraction has 1664 states and 2343 transitions. [2023-12-21 11:41:54,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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 11:41:54,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2343 transitions. [2023-12-21 11:41:54,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 11:41:54,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:54,161 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:54,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:41:54,162 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:54,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:54,162 INFO L85 PathProgramCache]: Analyzing trace with hash 45872129, now seen corresponding path program 1 times [2023-12-21 11:41:54,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:54,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311014047] [2023-12-21 11:41:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:54,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:54,241 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 11:41:54,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:54,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311014047] [2023-12-21 11:41:54,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311014047] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:54,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:54,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:41:54,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254284363] [2023-12-21 11:41:54,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:54,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:41:54,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:54,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:41:54,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:41:54,242 INFO L87 Difference]: Start difference. First operand 1664 states and 2343 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 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 11:41:54,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:54,324 INFO L93 Difference]: Finished difference Result 3056 states and 4339 transitions. [2023-12-21 11:41:54,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:41:54,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-21 11:41:54,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:54,330 INFO L225 Difference]: With dead ends: 3056 [2023-12-21 11:41:54,330 INFO L226 Difference]: Without dead ends: 2546 [2023-12-21 11:41:54,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:41:54,331 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 165 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:54,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 257 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:54,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2023-12-21 11:41:54,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2172. [2023-12-21 11:41:54,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2171 states have (on average 1.4090280976508522) internal successors, (3059), 2171 states have internal predecessors, (3059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 3059 transitions. [2023-12-21 11:41:54,388 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 3059 transitions. Word has length 49 [2023-12-21 11:41:54,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:54,388 INFO L495 AbstractCegarLoop]: Abstraction has 2172 states and 3059 transitions. [2023-12-21 11:41:54,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 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 11:41:54,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 3059 transitions. [2023-12-21 11:41:54,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 11:41:54,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:54,389 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:54,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:41:54,389 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:54,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:54,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1885157086, now seen corresponding path program 1 times [2023-12-21 11:41:54,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:54,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617810637] [2023-12-21 11:41:54,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:54,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:54,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:54,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617810637] [2023-12-21 11:41:54,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617810637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:54,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:54,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:41:54,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991384235] [2023-12-21 11:41:54,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:54,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:41:54,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:54,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:41:54,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:54,438 INFO L87 Difference]: Start difference. First operand 2172 states and 3059 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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 11:41:54,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:54,497 INFO L93 Difference]: Finished difference Result 4324 states and 6097 transitions. [2023-12-21 11:41:54,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:41:54,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-21 11:41:54,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:54,503 INFO L225 Difference]: With dead ends: 4324 [2023-12-21 11:41:54,503 INFO L226 Difference]: Without dead ends: 2174 [2023-12-21 11:41:54,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:54,506 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 29 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:54,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 134 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:54,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2023-12-21 11:41:54,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 2172. [2023-12-21 11:41:54,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2171 states have (on average 1.3859972362966375) internal successors, (3009), 2171 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:54,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 3009 transitions. [2023-12-21 11:41:54,565 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 3009 transitions. Word has length 50 [2023-12-21 11:41:54,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:54,565 INFO L495 AbstractCegarLoop]: Abstraction has 2172 states and 3009 transitions. [2023-12-21 11:41:54,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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 11:41:54,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 3009 transitions. [2023-12-21 11:41:54,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 11:41:54,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:54,566 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:54,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:41:54,566 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:54,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:54,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1001536681, now seen corresponding path program 1 times [2023-12-21 11:41:54,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:54,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675268453] [2023-12-21 11:41:54,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:54,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:54,610 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:54,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:54,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675268453] [2023-12-21 11:41:54,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675268453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:54,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:54,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:41:54,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561066829] [2023-12-21 11:41:54,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:54,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:41:54,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:54,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:41:54,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:54,612 INFO L87 Difference]: Start difference. First operand 2172 states and 3009 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 11:41:54,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:54,638 INFO L93 Difference]: Finished difference Result 3018 states and 4196 transitions. [2023-12-21 11:41:54,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:41:54,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 51 [2023-12-21 11:41:54,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:54,641 INFO L225 Difference]: With dead ends: 3018 [2023-12-21 11:41:54,641 INFO L226 Difference]: Without dead ends: 868 [2023-12-21 11:41:54,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:54,642 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 23 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:54,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 131 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:54,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2023-12-21 11:41:54,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 861. [2023-12-21 11:41:54,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 860 states have (on average 1.3767441860465117) internal successors, (1184), 860 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:54,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1184 transitions. [2023-12-21 11:41:54,664 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1184 transitions. Word has length 51 [2023-12-21 11:41:54,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:54,665 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1184 transitions. [2023-12-21 11:41:54,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 11:41:54,665 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1184 transitions. [2023-12-21 11:41:54,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 11:41:54,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:54,665 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:54,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:41:54,665 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:54,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:54,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1455204816, now seen corresponding path program 1 times [2023-12-21 11:41:54,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:54,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877356100] [2023-12-21 11:41:54,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:54,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:54,711 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:54,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:54,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877356100] [2023-12-21 11:41:54,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877356100] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:41:54,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:41:54,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:41:54,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224150033] [2023-12-21 11:41:54,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:41:54,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:41:54,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:54,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:41:54,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:54,713 INFO L87 Difference]: Start difference. First operand 861 states and 1184 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 11:41:54,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:54,729 INFO L93 Difference]: Finished difference Result 1279 states and 1762 transitions. [2023-12-21 11:41:54,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:41:54,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 52 [2023-12-21 11:41:54,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:54,730 INFO L225 Difference]: With dead ends: 1279 [2023-12-21 11:41:54,730 INFO L226 Difference]: Without dead ends: 449 [2023-12-21 11:41:54,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:41:54,732 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 25 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:54,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 110 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:41:54,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-12-21 11:41:54,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 447. [2023-12-21 11:41:54,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.34304932735426) internal successors, (599), 446 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:54,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 599 transitions. [2023-12-21 11:41:54,743 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 599 transitions. Word has length 52 [2023-12-21 11:41:54,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:54,743 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 599 transitions. [2023-12-21 11:41:54,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 11:41:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 599 transitions. [2023-12-21 11:41:54,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 11:41:54,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:54,744 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:54,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:41:54,744 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:54,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:54,744 INFO L85 PathProgramCache]: Analyzing trace with hash 923352062, now seen corresponding path program 1 times [2023-12-21 11:41:54,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:54,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625395200] [2023-12-21 11:41:54,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:54,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:56,189 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 11:41:56,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:56,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625395200] [2023-12-21 11:41:56,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625395200] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:41:56,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321079649] [2023-12-21 11:41:56,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:56,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:41:56,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:41:56,204 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 11:41:56,233 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 11:41:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:56,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 11:41:56,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:41:56,427 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:41:56,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:41:56,506 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:41:56,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321079649] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:41:56,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:41:56,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 16 [2023-12-21 11:41:56,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461257226] [2023-12-21 11:41:56,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:41:56,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 11:41:56,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:41:56,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 11:41:56,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:41:56,508 INFO L87 Difference]: Start difference. First operand 447 states and 599 transitions. Second operand has 16 states, 16 states have (on average 9.3125) internal successors, (149), 16 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 11:41:58,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:41:58,924 INFO L93 Difference]: Finished difference Result 2772 states and 3645 transitions. [2023-12-21 11:41:58,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-21 11:41:58,925 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.3125) internal successors, (149), 16 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) Word has length 54 [2023-12-21 11:41:58,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:41:58,930 INFO L225 Difference]: With dead ends: 2772 [2023-12-21 11:41:58,930 INFO L226 Difference]: Without dead ends: 2356 [2023-12-21 11:41:58,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=505, Invalid=2251, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 11:41:58,931 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 970 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:41:58,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 396 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 11:41:58,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2023-12-21 11:41:58,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 2094. [2023-12-21 11:41:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2094 states, 2093 states have (on average 1.2790253225035835) internal successors, (2677), 2093 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:41:58,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 2677 transitions. [2023-12-21 11:41:58,993 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 2677 transitions. Word has length 54 [2023-12-21 11:41:58,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:41:58,993 INFO L495 AbstractCegarLoop]: Abstraction has 2094 states and 2677 transitions. [2023-12-21 11:41:58,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.3125) internal successors, (149), 16 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 11:41:58,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 2677 transitions. [2023-12-21 11:41:58,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 11:41:58,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:41:58,994 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:41:59,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 11:41:59,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-21 11:41:59,199 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:41:59,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:41:59,200 INFO L85 PathProgramCache]: Analyzing trace with hash 122236493, now seen corresponding path program 1 times [2023-12-21 11:41:59,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:41:59,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703251025] [2023-12-21 11:41:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:59,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:41:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:41:59,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:41:59,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703251025] [2023-12-21 11:41:59,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703251025] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:41:59,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484716196] [2023-12-21 11:41:59,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:41:59,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:41:59,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:41:59,494 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 11:41:59,520 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 11:41:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:41:59,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 11:41:59,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:42:00,405 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:00,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:42:02,223 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:02,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484716196] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:42:02,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:42:02,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 17] total 35 [2023-12-21 11:42:02,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186929728] [2023-12-21 11:42:02,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:42:02,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-21 11:42:02,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:42:02,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-21 11:42:02,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1076, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 11:42:02,225 INFO L87 Difference]: Start difference. First operand 2094 states and 2677 transitions. Second operand has 36 states, 36 states have (on average 3.861111111111111) internal successors, (139), 35 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 11:42:05,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:42:05,391 INFO L93 Difference]: Finished difference Result 10968 states and 13857 transitions. [2023-12-21 11:42:05,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-21 11:42:05,392 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.861111111111111) internal successors, (139), 35 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) Word has length 55 [2023-12-21 11:42:05,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:42:05,410 INFO L225 Difference]: With dead ends: 10968 [2023-12-21 11:42:05,411 INFO L226 Difference]: Without dead ends: 9043 [2023-12-21 11:42:05,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1215, Invalid=5427, Unknown=0, NotChecked=0, Total=6642 [2023-12-21 11:42:05,414 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 1604 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:42:05,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 986 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 11:42:05,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9043 states. [2023-12-21 11:42:05,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9043 to 6909. [2023-12-21 11:42:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6909 states, 6908 states have (on average 1.2628836132020846) internal successors, (8724), 6908 states have internal predecessors, (8724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:05,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6909 states to 6909 states and 8724 transitions. [2023-12-21 11:42:05,654 INFO L78 Accepts]: Start accepts. Automaton has 6909 states and 8724 transitions. Word has length 55 [2023-12-21 11:42:05,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:42:05,654 INFO L495 AbstractCegarLoop]: Abstraction has 6909 states and 8724 transitions. [2023-12-21 11:42:05,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.861111111111111) internal successors, (139), 35 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 11:42:05,654 INFO L276 IsEmpty]: Start isEmpty. Operand 6909 states and 8724 transitions. [2023-12-21 11:42:05,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 11:42:05,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:42:05,655 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:42:05,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 11:42:05,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-21 11:42:05,875 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:42:05,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:42:05,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1288816485, now seen corresponding path program 1 times [2023-12-21 11:42:05,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:42:05,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126734801] [2023-12-21 11:42:05,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:05,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:42:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:06,104 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:06,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:42:06,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126734801] [2023-12-21 11:42:06,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126734801] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:42:06,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004625588] [2023-12-21 11:42:06,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:06,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:42:06,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:42:06,118 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 11:42:06,143 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 11:42:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:06,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:42:06,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:42:06,605 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:06,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:42:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:07,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004625588] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:42:07,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:42:07,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2023-12-21 11:42:07,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915343569] [2023-12-21 11:42:07,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:42:07,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-21 11:42:07,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:42:07,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-21 11:42:07,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2023-12-21 11:42:07,132 INFO L87 Difference]: Start difference. First operand 6909 states and 8724 transitions. Second operand has 27 states, 27 states have (on average 5.518518518518518) internal successors, (149), 26 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 11:42:07,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:42:07,800 INFO L93 Difference]: Finished difference Result 13294 states and 16736 transitions. [2023-12-21 11:42:07,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 11:42:07,800 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.518518518518518) internal successors, (149), 26 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) Word has length 55 [2023-12-21 11:42:07,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:42:07,828 INFO L225 Difference]: With dead ends: 13294 [2023-12-21 11:42:07,828 INFO L226 Difference]: Without dead ends: 7763 [2023-12-21 11:42:07,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=388, Invalid=1252, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 11:42:07,835 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 443 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:42:07,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 559 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:42:07,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7763 states. [2023-12-21 11:42:08,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7763 to 6829. [2023-12-21 11:42:08,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6829 states, 6828 states have (on average 1.2438488576449913) internal successors, (8493), 6828 states have internal predecessors, (8493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:08,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6829 states to 6829 states and 8493 transitions. [2023-12-21 11:42:08,073 INFO L78 Accepts]: Start accepts. Automaton has 6829 states and 8493 transitions. Word has length 55 [2023-12-21 11:42:08,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:42:08,073 INFO L495 AbstractCegarLoop]: Abstraction has 6829 states and 8493 transitions. [2023-12-21 11:42:08,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.518518518518518) internal successors, (149), 26 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 11:42:08,074 INFO L276 IsEmpty]: Start isEmpty. Operand 6829 states and 8493 transitions. [2023-12-21 11:42:08,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 11:42:08,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:42:08,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:42:08,090 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 11:42:08,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 11:42:08,282 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:42:08,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:42:08,283 INFO L85 PathProgramCache]: Analyzing trace with hash -769882752, now seen corresponding path program 1 times [2023-12-21 11:42:08,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:42:08,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406481214] [2023-12-21 11:42:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:08,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:42:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:08,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:42:08,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406481214] [2023-12-21 11:42:08,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406481214] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:42:08,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412268068] [2023-12-21 11:42:08,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:08,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:42:08,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:42:08,714 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 11:42:08,763 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 11:42:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:08,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 11:42:08,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:42:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:09,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:42:10,403 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:10,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412268068] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:42:10,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:42:10,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14] total 34 [2023-12-21 11:42:10,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613852506] [2023-12-21 11:42:10,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:42:10,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 11:42:10,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:42:10,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 11:42:10,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1012, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 11:42:10,405 INFO L87 Difference]: Start difference. First operand 6829 states and 8493 transitions. Second operand has 35 states, 35 states have (on average 4.142857142857143) internal successors, (145), 34 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 11:42:11,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:42:11,640 INFO L93 Difference]: Finished difference Result 8934 states and 11097 transitions. [2023-12-21 11:42:11,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 11:42:11,640 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.142857142857143) internal successors, (145), 34 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) Word has length 56 [2023-12-21 11:42:11,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:42:11,647 INFO L225 Difference]: With dead ends: 8934 [2023-12-21 11:42:11,647 INFO L226 Difference]: Without dead ends: 5965 [2023-12-21 11:42:11,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=743, Invalid=2449, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 11:42:11,651 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 1070 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:42:11,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 547 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:42:11,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5965 states. [2023-12-21 11:42:11,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5965 to 5687. [2023-12-21 11:42:11,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5687 states, 5686 states have (on average 1.2358424199788955) internal successors, (7027), 5686 states have internal predecessors, (7027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:11,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5687 states to 5687 states and 7027 transitions. [2023-12-21 11:42:11,867 INFO L78 Accepts]: Start accepts. Automaton has 5687 states and 7027 transitions. Word has length 56 [2023-12-21 11:42:11,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:42:11,867 INFO L495 AbstractCegarLoop]: Abstraction has 5687 states and 7027 transitions. [2023-12-21 11:42:11,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.142857142857143) internal successors, (145), 34 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 11:42:11,868 INFO L276 IsEmpty]: Start isEmpty. Operand 5687 states and 7027 transitions. [2023-12-21 11:42:11,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 11:42:11,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:42:11,868 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:42:11,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 11:42:12,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:42:12,078 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:42:12,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:42:12,078 INFO L85 PathProgramCache]: Analyzing trace with hash -297652260, now seen corresponding path program 1 times [2023-12-21 11:42:12,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:42:12,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277832447] [2023-12-21 11:42:12,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:12,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:42:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:12,980 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:12,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:42:12,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277832447] [2023-12-21 11:42:12,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277832447] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:42:12,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605766357] [2023-12-21 11:42:12,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:12,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:42:12,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:42:12,997 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 11:42:13,025 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 11:42:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:13,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 11:42:13,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:42:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:13,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:42:14,883 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:14,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605766357] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:42:14,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:42:14,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 14] total 46 [2023-12-21 11:42:14,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843375342] [2023-12-21 11:42:14,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:42:14,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-21 11:42:14,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:42:14,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-21 11:42:14,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1897, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 11:42:14,886 INFO L87 Difference]: Start difference. First operand 5687 states and 7027 transitions. Second operand has 46 states, 46 states have (on average 3.260869565217391) internal successors, (150), 46 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 11:42:23,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:42:23,619 INFO L93 Difference]: Finished difference Result 9437 states and 11622 transitions. [2023-12-21 11:42:23,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-21 11:42:23,619 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.260869565217391) internal successors, (150), 46 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) Word has length 56 [2023-12-21 11:42:23,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:42:23,628 INFO L225 Difference]: With dead ends: 9437 [2023-12-21 11:42:23,628 INFO L226 Difference]: Without dead ends: 7499 [2023-12-21 11:42:23,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4326 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=2680, Invalid=14090, Unknown=0, NotChecked=0, Total=16770 [2023-12-21 11:42:23,634 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 2599 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2599 SdHoareTripleChecker+Valid, 2324 SdHoareTripleChecker+Invalid, 2438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:42:23,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2599 Valid, 2324 Invalid, 2438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 11:42:23,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7499 states. [2023-12-21 11:42:23,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7499 to 5685. [2023-12-21 11:42:23,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5685 states, 5684 states have (on average 1.2390921885995778) internal successors, (7043), 5684 states have internal predecessors, (7043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:42:23,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 7043 transitions. [2023-12-21 11:42:23,872 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 7043 transitions. Word has length 56 [2023-12-21 11:42:23,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:42:23,872 INFO L495 AbstractCegarLoop]: Abstraction has 5685 states and 7043 transitions. [2023-12-21 11:42:23,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.260869565217391) internal successors, (150), 46 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 11:42:23,872 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 7043 transitions. [2023-12-21 11:42:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 11:42:23,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:42:23,873 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:42:23,879 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 11:42:24,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:42:24,078 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:42:24,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:42:24,078 INFO L85 PathProgramCache]: Analyzing trace with hash -276203885, now seen corresponding path program 1 times [2023-12-21 11:42:24,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:42:24,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033111678] [2023-12-21 11:42:24,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:24,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:42:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:24,991 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:24,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:42:24,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033111678] [2023-12-21 11:42:24,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033111678] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:42:24,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653714041] [2023-12-21 11:42:24,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:42:24,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:42:24,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:42:24,993 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 11:42:24,993 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 11:42:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:42:25,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-21 11:42:25,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:42:26,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:26,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:42:31,413 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:42:31,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653714041] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:42:31,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:42:31,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16, 16] total 46 [2023-12-21 11:42:31,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728702745] [2023-12-21 11:42:31,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:42:31,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-21 11:42:31,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:42:31,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-21 11:42:31,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1881, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 11:42:31,446 INFO L87 Difference]: Start difference. First operand 5685 states and 7043 transitions. Second operand has 46 states, 46 states have (on average 3.282608695652174) internal successors, (151), 46 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 11:43:19,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:43:19,710 INFO L93 Difference]: Finished difference Result 13677 states and 16959 transitions. [2023-12-21 11:43:19,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2023-12-21 11:43:19,710 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.282608695652174) internal successors, (151), 46 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 57 [2023-12-21 11:43:19,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:43:19,719 INFO L225 Difference]: With dead ends: 13677 [2023-12-21 11:43:19,719 INFO L226 Difference]: Without dead ends: 8803 [2023-12-21 11:43:19,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22925 ImplicationChecksByTransitivity, 46.9s TimeCoverageRelationStatistics Valid=10301, Invalid=48991, Unknown=0, NotChecked=0, Total=59292 [2023-12-21 11:43:19,728 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 3283 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 3593 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3283 SdHoareTripleChecker+Valid, 3026 SdHoareTripleChecker+Invalid, 3777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 3593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:43:19,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3283 Valid, 3026 Invalid, 3777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 3593 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-21 11:43:19,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8803 states. [2023-12-21 11:43:20,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8803 to 6253. [2023-12-21 11:43:20,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6253 states, 6252 states have (on average 1.2528790786948176) internal successors, (7833), 6252 states have internal predecessors, (7833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:43:20,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6253 states to 6253 states and 7833 transitions. [2023-12-21 11:43:20,053 INFO L78 Accepts]: Start accepts. Automaton has 6253 states and 7833 transitions. Word has length 57 [2023-12-21 11:43:20,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:43:20,053 INFO L495 AbstractCegarLoop]: Abstraction has 6253 states and 7833 transitions. [2023-12-21 11:43:20,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.282608695652174) internal successors, (151), 46 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 11:43:20,053 INFO L276 IsEmpty]: Start isEmpty. Operand 6253 states and 7833 transitions. [2023-12-21 11:43:20,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 11:43:20,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:43:20,055 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:43:20,060 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 11:43:20,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:43:20,260 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:43:20,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:43:20,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1002457202, now seen corresponding path program 1 times [2023-12-21 11:43:20,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:43:20,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86459538] [2023-12-21 11:43:20,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:43:20,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:43:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:43:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:43:20,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:43:20,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86459538] [2023-12-21 11:43:20,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86459538] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:43:20,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978099515] [2023-12-21 11:43:20,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:43:20,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:43:20,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:43:20,877 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 11:43:20,879 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 11:43:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:43:20,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 11:43:20,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:43:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 40 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:43:21,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:43:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:43:22,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978099515] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:43:22,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:43:22,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 35 [2023-12-21 11:43:22,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263954365] [2023-12-21 11:43:22,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:43:22,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-21 11:43:22,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:43:22,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-21 11:43:22,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 11:43:22,361 INFO L87 Difference]: Start difference. First operand 6253 states and 7833 transitions. Second operand has 36 states, 36 states have (on average 6.666666666666667) internal successors, (240), 35 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:43:23,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:43:23,771 INFO L93 Difference]: Finished difference Result 9713 states and 12199 transitions. [2023-12-21 11:43:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-21 11:43:23,774 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 6.666666666666667) internal successors, (240), 35 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have 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 11:43:23,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:43:23,781 INFO L225 Difference]: With dead ends: 9713 [2023-12-21 11:43:23,781 INFO L226 Difference]: Without dead ends: 6403 [2023-12-21 11:43:23,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=889, Invalid=3401, Unknown=0, NotChecked=0, Total=4290 [2023-12-21 11:43:23,783 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 975 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:43:23,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 952 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 11:43:23,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6403 states. [2023-12-21 11:43:24,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6403 to 6177. [2023-12-21 11:43:24,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6177 states, 6176 states have (on average 1.2475712435233162) internal successors, (7705), 6176 states have internal predecessors, (7705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:43:24,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6177 states to 6177 states and 7705 transitions. [2023-12-21 11:43:24,101 INFO L78 Accepts]: Start accepts. Automaton has 6177 states and 7705 transitions. Word has length 92 [2023-12-21 11:43:24,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:43:24,101 INFO L495 AbstractCegarLoop]: Abstraction has 6177 states and 7705 transitions. [2023-12-21 11:43:24,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 6.666666666666667) internal successors, (240), 35 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:43:24,101 INFO L276 IsEmpty]: Start isEmpty. Operand 6177 states and 7705 transitions. [2023-12-21 11:43:24,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 11:43:24,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:43:24,103 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:43:24,108 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 11:43:24,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:43:24,307 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:43:24,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:43:24,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1175166350, now seen corresponding path program 1 times [2023-12-21 11:43:24,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:43:24,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782381660] [2023-12-21 11:43:24,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:43:24,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:43:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:43:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:43:24,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:43:24,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782381660] [2023-12-21 11:43:24,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782381660] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:43:24,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923454712] [2023-12-21 11:43:24,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:43:24,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:43:24,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:43:24,916 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 11:43:24,919 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 11:43:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:43:25,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 11:43:25,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:43:25,794 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:43:25,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:43:27,054 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:43:27,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923454712] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:43:27,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:43:27,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 34 [2023-12-21 11:43:27,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773807832] [2023-12-21 11:43:27,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:43:27,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 11:43:27,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:43:27,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 11:43:27,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1072, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 11:43:27,057 INFO L87 Difference]: Start difference. First operand 6177 states and 7705 transitions. Second operand has 35 states, 35 states have (on average 7.428571428571429) internal successors, (260), 34 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:43:35,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:43:35,734 INFO L93 Difference]: Finished difference Result 13409 states and 16801 transitions. [2023-12-21 11:43:35,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-12-21 11:43:35,735 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.428571428571429) internal successors, (260), 34 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have 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 11:43:35,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:43:35,742 INFO L225 Difference]: With dead ends: 13409 [2023-12-21 11:43:35,742 INFO L226 Difference]: Without dead ends: 8193 [2023-12-21 11:43:35,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5443 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=3303, Invalid=15603, Unknown=0, NotChecked=0, Total=18906 [2023-12-21 11:43:35,747 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 2329 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2329 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:43:35,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2329 Valid, 1091 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:43:35,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8193 states. [2023-12-21 11:43:36,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8193 to 5123. [2023-12-21 11:43:36,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5123 states, 5122 states have (on average 1.2266692698164778) internal successors, (6283), 5122 states have internal predecessors, (6283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:43:36,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 6283 transitions. [2023-12-21 11:43:36,085 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 6283 transitions. Word has length 92 [2023-12-21 11:43:36,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:43:36,085 INFO L495 AbstractCegarLoop]: Abstraction has 5123 states and 6283 transitions. [2023-12-21 11:43:36,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.428571428571429) internal successors, (260), 34 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:43:36,086 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 6283 transitions. [2023-12-21 11:43:36,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 11:43:36,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:43:36,087 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:43:36,092 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 11:43:36,291 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,SelfDestructingSolverStorable22 [2023-12-21 11:43:36,293 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:43:36,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:43:36,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1098499603, now seen corresponding path program 1 times [2023-12-21 11:43:36,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:43:36,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990594361] [2023-12-21 11:43:36,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:43:36,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:43:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:43:36,529 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 52 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 11:43:36,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:43:36,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990594361] [2023-12-21 11:43:36,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990594361] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:43:36,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864339528] [2023-12-21 11:43:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:43:36,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:43:36,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:43:36,531 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 11:43:36,548 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 11:43:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:43:36,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:43:36,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:43:37,263 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:43:37,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:43:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 25 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:43:38,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864339528] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:43:38,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:43:38,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 16] total 38 [2023-12-21 11:43:38,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344649896] [2023-12-21 11:43:38,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:43:38,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-21 11:43:38,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:43:38,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-21 11:43:38,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1261, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 11:43:38,650 INFO L87 Difference]: Start difference. First operand 5123 states and 6283 transitions. Second operand has 39 states, 39 states have (on average 6.461538461538462) internal successors, (252), 38 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:43:42,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:43:42,042 INFO L93 Difference]: Finished difference Result 10041 states and 12329 transitions. [2023-12-21 11:43:42,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-21 11:43:42,043 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.461538461538462) internal successors, (252), 38 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have 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 11:43:42,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:43:42,051 INFO L225 Difference]: With dead ends: 10041 [2023-12-21 11:43:42,052 INFO L226 Difference]: Without dead ends: 8317 [2023-12-21 11:43:42,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2772 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1766, Invalid=7164, Unknown=0, NotChecked=0, Total=8930 [2023-12-21 11:43:42,055 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 1197 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:43:42,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 1585 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 11:43:42,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8317 states. [2023-12-21 11:43:42,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8317 to 5123. [2023-12-21 11:43:42,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5123 states, 5122 states have (on average 1.2200312377977354) internal successors, (6249), 5122 states have internal predecessors, (6249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:43:42,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 6249 transitions. [2023-12-21 11:43:42,433 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 6249 transitions. Word has length 93 [2023-12-21 11:43:42,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:43:42,435 INFO L495 AbstractCegarLoop]: Abstraction has 5123 states and 6249 transitions. [2023-12-21 11:43:42,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.461538461538462) internal successors, (252), 38 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:43:42,435 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 6249 transitions. [2023-12-21 11:43:42,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 11:43:42,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:43:42,437 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:43:42,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 11:43:42,642 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,SelfDestructingSolverStorable23 [2023-12-21 11:43:42,642 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:43:42,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:43:42,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1275648929, now seen corresponding path program 1 times [2023-12-21 11:43:42,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:43:42,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201800949] [2023-12-21 11:43:42,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:43:42,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:43:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:43:43,710 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:43:43,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:43:43,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201800949] [2023-12-21 11:43:43,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201800949] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:43:43,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397522372] [2023-12-21 11:43:43,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:43:43,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:43:43,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:43:43,712 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 11:43:43,714 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 11:43:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:43:43,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 11:43:43,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:43:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:43:45,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:43:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:43:47,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397522372] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:43:47,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:43:47,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 18, 18] total 59 [2023-12-21 11:43:47,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393787573] [2023-12-21 11:43:47,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:43:47,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-21 11:43:47,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:43:47,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-21 11:43:47,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=3185, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 11:43:47,454 INFO L87 Difference]: Start difference. First operand 5123 states and 6249 transitions. Second operand has 59 states, 59 states have (on average 4.508474576271187) internal successors, (266), 59 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:44:34,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:44:34,855 INFO L93 Difference]: Finished difference Result 11690 states and 14147 transitions. [2023-12-21 11:44:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2023-12-21 11:44:34,856 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.508474576271187) internal successors, (266), 59 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have 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 11:44:34,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:44:34,862 INFO L225 Difference]: With dead ends: 11690 [2023-12-21 11:44:34,863 INFO L226 Difference]: Without dead ends: 9265 [2023-12-21 11:44:34,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35711 ImplicationChecksByTransitivity, 43.6s TimeCoverageRelationStatistics Valid=12549, Invalid=87623, Unknown=0, NotChecked=0, Total=100172 [2023-12-21 11:44:34,868 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 4410 mSDsluCounter, 5685 mSDsCounter, 0 mSdLazyCounter, 5172 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4410 SdHoareTripleChecker+Valid, 5911 SdHoareTripleChecker+Invalid, 5535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 5172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:44:34,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4410 Valid, 5911 Invalid, 5535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 5172 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-21 11:44:34,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9265 states. [2023-12-21 11:44:35,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9265 to 6105. [2023-12-21 11:44:35,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6105 states, 6104 states have (on average 1.208224115334207) internal successors, (7375), 6104 states have internal predecessors, (7375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:44:35,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6105 states to 6105 states and 7375 transitions. [2023-12-21 11:44:35,447 INFO L78 Accepts]: Start accepts. Automaton has 6105 states and 7375 transitions. Word has length 93 [2023-12-21 11:44:35,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:44:35,447 INFO L495 AbstractCegarLoop]: Abstraction has 6105 states and 7375 transitions. [2023-12-21 11:44:35,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.508474576271187) internal successors, (266), 59 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:44:35,447 INFO L276 IsEmpty]: Start isEmpty. Operand 6105 states and 7375 transitions. [2023-12-21 11:44:35,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 11:44:35,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:44:35,448 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:44:35,471 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 11:44:35,653 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,SelfDestructingSolverStorable24 [2023-12-21 11:44:35,653 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:44:35,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:44:35,653 INFO L85 PathProgramCache]: Analyzing trace with hash -292304222, now seen corresponding path program 1 times [2023-12-21 11:44:35,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:44:35,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463737] [2023-12-21 11:44:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:44:35,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:44:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:44:36,327 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:44:36,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:44:36,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463737] [2023-12-21 11:44:36,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463737] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:44:36,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470394946] [2023-12-21 11:44:36,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:44:36,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:44:36,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:44:36,340 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 11:44:36,362 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 11:44:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:44:36,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 11:44:36,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:44:37,440 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:44:37,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:44:39,694 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:44:39,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470394946] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:44:39,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:44:39,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 18] total 53 [2023-12-21 11:44:39,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192731164] [2023-12-21 11:44:39,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:44:39,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-21 11:44:39,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:44:39,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-21 11:44:39,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2540, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 11:44:39,696 INFO L87 Difference]: Start difference. First operand 6105 states and 7375 transitions. Second operand has 53 states, 53 states have (on average 4.9245283018867925) internal successors, (261), 53 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:45:17,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:45:17,546 INFO L93 Difference]: Finished difference Result 13384 states and 16013 transitions. [2023-12-21 11:45:17,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2023-12-21 11:45:17,546 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.9245283018867925) internal successors, (261), 53 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have 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 11:45:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:45:17,553 INFO L225 Difference]: With dead ends: 13384 [2023-12-21 11:45:17,553 INFO L226 Difference]: Without dead ends: 10515 [2023-12-21 11:45:17,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25476 ImplicationChecksByTransitivity, 33.9s TimeCoverageRelationStatistics Valid=9092, Invalid=63000, Unknown=0, NotChecked=0, Total=72092 [2023-12-21 11:45:17,557 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 5856 mSDsluCounter, 4528 mSDsCounter, 0 mSdLazyCounter, 4629 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5856 SdHoareTripleChecker+Valid, 4708 SdHoareTripleChecker+Invalid, 4977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 4629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:45:17,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5856 Valid, 4708 Invalid, 4977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 4629 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-21 11:45:17,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10515 states. [2023-12-21 11:45:18,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10515 to 5631. [2023-12-21 11:45:18,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5631 states, 5630 states have (on average 1.1896980461811724) internal successors, (6698), 5630 states have internal predecessors, (6698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:45:18,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5631 states to 5631 states and 6698 transitions. [2023-12-21 11:45:18,194 INFO L78 Accepts]: Start accepts. Automaton has 5631 states and 6698 transitions. Word has length 94 [2023-12-21 11:45:18,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:45:18,194 INFO L495 AbstractCegarLoop]: Abstraction has 5631 states and 6698 transitions. [2023-12-21 11:45:18,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.9245283018867925) internal successors, (261), 53 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:45:18,194 INFO L276 IsEmpty]: Start isEmpty. Operand 5631 states and 6698 transitions. [2023-12-21 11:45:18,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 11:45:18,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:45:18,195 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:45:18,201 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 11:45:18,400 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,SelfDestructingSolverStorable25 [2023-12-21 11:45:18,400 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:45:18,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:45:18,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1051627468, now seen corresponding path program 1 times [2023-12-21 11:45:18,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:45:18,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393025187] [2023-12-21 11:45:18,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:45:18,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:45:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:45:18,984 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 32 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:45:18,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:45:18,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393025187] [2023-12-21 11:45:18,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393025187] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:45:18,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267310076] [2023-12-21 11:45:18,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:45:18,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:45:18,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:45:18,985 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 11:45:18,986 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 11:45:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:45:19,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 11:45:19,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:45:20,061 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 32 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:45:20,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:45:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 32 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:45:22,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267310076] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:45:22,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:45:22,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 17] total 51 [2023-12-21 11:45:22,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520889081] [2023-12-21 11:45:22,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:45:22,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-21 11:45:22,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:45:22,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-21 11:45:22,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=2256, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 11:45:22,285 INFO L87 Difference]: Start difference. First operand 5631 states and 6698 transitions. Second operand has 51 states, 51 states have (on average 4.8431372549019605) internal successors, (247), 51 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:45:32,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:45:32,340 INFO L93 Difference]: Finished difference Result 13605 states and 16307 transitions. [2023-12-21 11:45:32,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-21 11:45:32,340 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.8431372549019605) internal successors, (247), 51 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have 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 11:45:32,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:45:32,347 INFO L225 Difference]: With dead ends: 13605 [2023-12-21 11:45:32,347 INFO L226 Difference]: Without dead ends: 10197 [2023-12-21 11:45:32,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5175 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=3528, Invalid=14562, Unknown=0, NotChecked=0, Total=18090 [2023-12-21 11:45:32,353 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1912 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1912 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:45:32,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1912 Valid, 1964 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:45:32,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10197 states. [2023-12-21 11:45:33,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10197 to 9272. [2023-12-21 11:45:33,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9272 states, 9271 states have (on average 1.1974975730773378) internal successors, (11102), 9271 states have internal predecessors, (11102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:45:33,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9272 states to 9272 states and 11102 transitions. [2023-12-21 11:45:33,744 INFO L78 Accepts]: Start accepts. Automaton has 9272 states and 11102 transitions. Word has length 94 [2023-12-21 11:45:33,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:45:33,745 INFO L495 AbstractCegarLoop]: Abstraction has 9272 states and 11102 transitions. [2023-12-21 11:45:33,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.8431372549019605) internal successors, (247), 51 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:45:33,745 INFO L276 IsEmpty]: Start isEmpty. Operand 9272 states and 11102 transitions. [2023-12-21 11:45:33,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 11:45:33,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:45:33,747 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:45:33,755 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 11:45:33,953 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,SelfDestructingSolverStorable26 [2023-12-21 11:45:33,953 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:45:33,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:45:33,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1297592053, now seen corresponding path program 1 times [2023-12-21 11:45:33,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:45:33,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190424047] [2023-12-21 11:45:33,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:45:33,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:45:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:45:35,090 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 37 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:45:35,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:45:35,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190424047] [2023-12-21 11:45:35,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190424047] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:45:35,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795205456] [2023-12-21 11:45:35,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:45:35,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:45:35,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:45:35,093 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 11:45:35,094 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 11:45:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:45:35,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-21 11:45:35,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:45:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 37 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:45:37,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:45:40,867 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 37 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:45:40,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795205456] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:45:40,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:45:40,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22, 21] total 65 [2023-12-21 11:45:40,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436603232] [2023-12-21 11:45:40,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:45:40,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-21 11:45:40,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:45:40,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-21 11:45:40,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=3765, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 11:45:40,869 INFO L87 Difference]: Start difference. First operand 9272 states and 11102 transitions. Second operand has 65 states, 65 states have (on average 3.8153846153846156) internal successors, (248), 65 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:46:19,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:19,655 INFO L93 Difference]: Finished difference Result 13500 states and 16053 transitions. [2023-12-21 11:46:19,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2023-12-21 11:46:19,655 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.8153846153846156) internal successors, (248), 65 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have 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 11:46:19,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:19,663 INFO L225 Difference]: With dead ends: 13500 [2023-12-21 11:46:19,664 INFO L226 Difference]: Without dead ends: 11601 [2023-12-21 11:46:19,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26579 ImplicationChecksByTransitivity, 36.6s TimeCoverageRelationStatistics Valid=9794, Invalid=67212, Unknown=0, NotChecked=0, Total=77006 [2023-12-21 11:46:19,668 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 3300 mSDsluCounter, 4656 mSDsCounter, 0 mSdLazyCounter, 3651 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3300 SdHoareTripleChecker+Valid, 4823 SdHoareTripleChecker+Invalid, 3866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 3651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:19,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3300 Valid, 4823 Invalid, 3866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 3651 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-21 11:46:19,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11601 states. [2023-12-21 11:46:21,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11601 to 9941. [2023-12-21 11:46:21,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9941 states, 9940 states have (on average 1.1983903420523139) internal successors, (11912), 9940 states have internal predecessors, (11912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:46:21,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9941 states to 9941 states and 11912 transitions. [2023-12-21 11:46:21,107 INFO L78 Accepts]: Start accepts. Automaton has 9941 states and 11912 transitions. Word has length 95 [2023-12-21 11:46:21,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:21,107 INFO L495 AbstractCegarLoop]: Abstraction has 9941 states and 11912 transitions. [2023-12-21 11:46:21,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.8153846153846156) internal successors, (248), 65 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:46:21,107 INFO L276 IsEmpty]: Start isEmpty. Operand 9941 states and 11912 transitions. [2023-12-21 11:46:21,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 11:46:21,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:21,108 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:46:21,115 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 11:46:21,313 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,SelfDestructingSolverStorable27 [2023-12-21 11:46:21,313 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:21,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:21,313 INFO L85 PathProgramCache]: Analyzing trace with hash 727849209, now seen corresponding path program 1 times [2023-12-21 11:46:21,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:21,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145580789] [2023-12-21 11:46:21,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:21,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:22,203 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:46:22,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:22,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145580789] [2023-12-21 11:46:22,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145580789] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:46:22,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626277455] [2023-12-21 11:46:22,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:22,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:46:22,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:46:22,205 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 11:46:22,206 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 11:46:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:22,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-21 11:46:22,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:46:24,450 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:46:24,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:46:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:46:27,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626277455] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:46:27,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:46:27,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 20] total 61 [2023-12-21 11:46:27,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966656633] [2023-12-21 11:46:27,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:46:27,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-21 11:46:27,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:27,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-21 11:46:27,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=3286, Unknown=0, NotChecked=0, Total=3660 [2023-12-21 11:46:27,806 INFO L87 Difference]: Start difference. First operand 9941 states and 11912 transitions. Second operand has 61 states, 61 states have (on average 4.229508196721311) internal successors, (258), 61 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:46:58,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:58,551 INFO L93 Difference]: Finished difference Result 16680 states and 19956 transitions. [2023-12-21 11:46:58,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2023-12-21 11:46:58,552 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.229508196721311) internal successors, (258), 61 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have 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 11:46:58,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:58,564 INFO L225 Difference]: With dead ends: 16680 [2023-12-21 11:46:58,564 INFO L226 Difference]: Without dead ends: 11729 [2023-12-21 11:46:58,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18468 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=8560, Invalid=47372, Unknown=0, NotChecked=0, Total=55932 [2023-12-21 11:46:58,571 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 2256 mSDsluCounter, 3188 mSDsCounter, 0 mSdLazyCounter, 3034 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2256 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 3175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 3034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:58,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2256 Valid, 3339 Invalid, 3175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 3034 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-21 11:46:58,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11729 states. [2023-12-21 11:47:00,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11729 to 10800. [2023-12-21 11:47:00,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10800 states, 10799 states have (on average 1.1967774793962405) internal successors, (12924), 10799 states have internal predecessors, (12924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:47:00,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10800 states to 10800 states and 12924 transitions. [2023-12-21 11:47:00,198 INFO L78 Accepts]: Start accepts. Automaton has 10800 states and 12924 transitions. Word has length 95 [2023-12-21 11:47:00,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:47:00,198 INFO L495 AbstractCegarLoop]: Abstraction has 10800 states and 12924 transitions. [2023-12-21 11:47:00,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.229508196721311) internal successors, (258), 61 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:47:00,198 INFO L276 IsEmpty]: Start isEmpty. Operand 10800 states and 12924 transitions. [2023-12-21 11:47:00,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 11:47:00,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:47:00,199 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:47:00,205 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 11:47:00,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:47:00,405 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:47:00,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:47:00,405 INFO L85 PathProgramCache]: Analyzing trace with hash 945006046, now seen corresponding path program 1 times [2023-12-21 11:47:00,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:47:00,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728591674] [2023-12-21 11:47:00,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:47:00,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:47:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:47:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 42 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:47:00,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:47:00,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728591674] [2023-12-21 11:47:00,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728591674] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:47:00,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107797559] [2023-12-21 11:47:00,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:47:00,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:47:00,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:47:00,748 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 11:47:00,762 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 11:47:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:47:00,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:47:00,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:47:01,628 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 48 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:47:01,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:47:02,911 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 41 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:47:02,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107797559] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:47:02,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:47:02,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 40 [2023-12-21 11:47:02,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960151589] [2023-12-21 11:47:02,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:47:02,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-21 11:47:02,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:47:02,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-21 11:47:02,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1382, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 11:47:02,913 INFO L87 Difference]: Start difference. First operand 10800 states and 12924 transitions. Second operand has 40 states, 40 states have (on average 6.475) internal successors, (259), 40 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:47:08,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:47:08,896 INFO L93 Difference]: Finished difference Result 27853 states and 33553 transitions. [2023-12-21 11:47:08,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-21 11:47:08,896 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.475) internal successors, (259), 40 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have 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 11:47:08,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:47:08,909 INFO L225 Difference]: With dead ends: 27853 [2023-12-21 11:47:08,910 INFO L226 Difference]: Without dead ends: 18930 [2023-12-21 11:47:08,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2683 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2033, Invalid=8679, Unknown=0, NotChecked=0, Total=10712 [2023-12-21 11:47:08,916 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 1604 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:47:08,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 1644 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 11:47:08,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18930 states. [2023-12-21 11:47:11,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18930 to 13183. [2023-12-21 11:47:11,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13183 states, 13182 states have (on average 1.2009558488848429) internal successors, (15831), 13182 states have internal predecessors, (15831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:47:11,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13183 states to 13183 states and 15831 transitions. [2023-12-21 11:47:11,122 INFO L78 Accepts]: Start accepts. Automaton has 13183 states and 15831 transitions. Word has length 96 [2023-12-21 11:47:11,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:47:11,122 INFO L495 AbstractCegarLoop]: Abstraction has 13183 states and 15831 transitions. [2023-12-21 11:47:11,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.475) internal successors, (259), 40 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:47:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand 13183 states and 15831 transitions. [2023-12-21 11:47:11,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 11:47:11,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:47:11,123 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:47:11,142 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 11:47:11,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:47:11,328 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:47:11,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:47:11,328 INFO L85 PathProgramCache]: Analyzing trace with hash -437280450, now seen corresponding path program 1 times [2023-12-21 11:47:11,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:47:11,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301271059] [2023-12-21 11:47:11,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:47:11,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:47:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:47:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:47:11,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:47:11,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301271059] [2023-12-21 11:47:11,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301271059] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:47:11,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500624372] [2023-12-21 11:47:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:47:11,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:47:11,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:47:11,629 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 11:47:11,662 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 11:47:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:47:11,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:47:11,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:47:12,685 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 30 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:47:12,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:47:13,989 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:47:13,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500624372] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:47:13,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:47:13,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 15] total 39 [2023-12-21 11:47:13,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794278519] [2023-12-21 11:47:13,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:47:13,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-21 11:47:13,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:47:13,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-21 11:47:13,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1317, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 11:47:13,991 INFO L87 Difference]: Start difference. First operand 13183 states and 15831 transitions. Second operand has 39 states, 39 states have (on average 6.487179487179487) internal successors, (253), 39 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:47:21,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:47:21,922 INFO L93 Difference]: Finished difference Result 28829 states and 34727 transitions. [2023-12-21 11:47:21,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-21 11:47:21,923 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.487179487179487) internal successors, (253), 39 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have 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 11:47:21,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:47:21,940 INFO L225 Difference]: With dead ends: 28829 [2023-12-21 11:47:21,941 INFO L226 Difference]: Without dead ends: 23823 [2023-12-21 11:47:21,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4267 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2710, Invalid=11570, Unknown=0, NotChecked=0, Total=14280 [2023-12-21 11:47:21,947 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 1448 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 1938 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:47:21,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1448 Valid, 2240 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1938 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:47:21,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23823 states. [2023-12-21 11:47:24,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23823 to 16456. [2023-12-21 11:47:24,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16456 states, 16455 states have (on average 1.2009115770282588) internal successors, (19761), 16455 states have internal predecessors, (19761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:47:24,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16456 states to 16456 states and 19761 transitions. [2023-12-21 11:47:24,719 INFO L78 Accepts]: Start accepts. Automaton has 16456 states and 19761 transitions. Word has length 96 [2023-12-21 11:47:24,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:47:24,719 INFO L495 AbstractCegarLoop]: Abstraction has 16456 states and 19761 transitions. [2023-12-21 11:47:24,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.487179487179487) internal successors, (253), 39 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:47:24,719 INFO L276 IsEmpty]: Start isEmpty. Operand 16456 states and 19761 transitions. [2023-12-21 11:47:24,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 11:47:24,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:47:24,724 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:47:24,728 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 11:47:24,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:47:24,927 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:47:24,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:47:24,928 INFO L85 PathProgramCache]: Analyzing trace with hash -809451358, now seen corresponding path program 1 times [2023-12-21 11:47:24,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:47:24,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375875199] [2023-12-21 11:47:24,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:47:24,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:47:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:47:25,640 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:47:25,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:47:25,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375875199] [2023-12-21 11:47:25,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375875199] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:47:25,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311511460] [2023-12-21 11:47:25,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:47:25,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:47:25,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:47:25,648 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 11:47:25,657 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 11:47:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:47:25,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:47:25,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:47:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:47:26,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:47:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 20 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:47:27,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311511460] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:47:27,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:47:27,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 15] total 45 [2023-12-21 11:47:27,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374958401] [2023-12-21 11:47:27,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:47:27,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-21 11:47:27,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:47:27,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-21 11:47:27,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1800, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 11:47:27,709 INFO L87 Difference]: Start difference. First operand 16456 states and 19761 transitions. Second operand has 45 states, 45 states have (on average 5.7555555555555555) internal successors, (259), 45 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:47:42,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:47:42,278 INFO L93 Difference]: Finished difference Result 43126 states and 51786 transitions. [2023-12-21 11:47:42,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2023-12-21 11:47:42,278 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.7555555555555555) internal successors, (259), 45 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have 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 11:47:42,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:47:42,305 INFO L225 Difference]: With dead ends: 43126 [2023-12-21 11:47:42,305 INFO L226 Difference]: Without dead ends: 30580 [2023-12-21 11:47:42,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20441 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=7867, Invalid=45263, Unknown=0, NotChecked=0, Total=53130 [2023-12-21 11:47:42,315 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 2088 mSDsluCounter, 3925 mSDsCounter, 0 mSdLazyCounter, 3743 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2088 SdHoareTripleChecker+Valid, 4084 SdHoareTripleChecker+Invalid, 3876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 3743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:47:42,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2088 Valid, 4084 Invalid, 3876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 3743 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 11:47:42,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30580 states. [2023-12-21 11:47:46,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30580 to 19574. [2023-12-21 11:47:46,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19574 states, 19573 states have (on average 1.2031880651918458) internal successors, (23550), 19573 states have internal predecessors, (23550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:47:46,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19574 states to 19574 states and 23550 transitions. [2023-12-21 11:47:46,422 INFO L78 Accepts]: Start accepts. Automaton has 19574 states and 23550 transitions. Word has length 96 [2023-12-21 11:47:46,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:47:46,422 INFO L495 AbstractCegarLoop]: Abstraction has 19574 states and 23550 transitions. [2023-12-21 11:47:46,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.7555555555555555) internal successors, (259), 45 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:47:46,422 INFO L276 IsEmpty]: Start isEmpty. Operand 19574 states and 23550 transitions. [2023-12-21 11:47:46,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 11:47:46,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:47:46,423 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:47:46,430 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 11:47:46,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:47:46,628 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:47:46,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:47:46,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2002874981, now seen corresponding path program 1 times [2023-12-21 11:47:46,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:47:46,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474638432] [2023-12-21 11:47:46,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:47:46,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:47:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:47:47,818 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:47:47,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:47:47,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474638432] [2023-12-21 11:47:47,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474638432] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:47:47,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901046924] [2023-12-21 11:47:47,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:47:47,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:47:47,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:47:47,822 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 11:47:47,825 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 11:47:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:47:47,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-21 11:47:47,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:47:50,982 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 20 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:47:50,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:47:56,632 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:47:56,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901046924] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:47:56,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:47:56,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28, 29] total 79 [2023-12-21 11:47:56,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718543346] [2023-12-21 11:47:56,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:47:56,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-12-21 11:47:56,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:47:56,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-12-21 11:47:56,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=5837, Unknown=0, NotChecked=0, Total=6320 [2023-12-21 11:47:56,634 INFO L87 Difference]: Start difference. First operand 19574 states and 23550 transitions. Second operand has 80 states, 80 states have (on average 3.4125) internal successors, (273), 79 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:22,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:53:22,557 INFO L93 Difference]: Finished difference Result 46784 states and 56224 transitions. [2023-12-21 11:53:22,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 588 states. [2023-12-21 11:53:22,557 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 3.4125) internal successors, (273), 79 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-21 11:53:22,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:53:22,595 INFO L225 Difference]: With dead ends: 46784 [2023-12-21 11:53:22,595 INFO L226 Difference]: Without dead ends: 39747 [2023-12-21 11:53:22,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 664 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200559 ImplicationChecksByTransitivity, 314.6s TimeCoverageRelationStatistics Valid=47510, Invalid=395380, Unknown=0, NotChecked=0, Total=442890 [2023-12-21 11:53:22,621 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 6653 mSDsluCounter, 5328 mSDsCounter, 0 mSdLazyCounter, 6948 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6653 SdHoareTripleChecker+Valid, 5474 SdHoareTripleChecker+Invalid, 7424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 6948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:53:22,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6653 Valid, 5474 Invalid, 7424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 6948 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-12-21 11:53:22,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39747 states. [2023-12-21 11:53:27,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39747 to 22745. [2023-12-21 11:53:27,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22745 states, 22744 states have (on average 1.20444952514949) internal successors, (27394), 22744 states have internal predecessors, (27394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:27,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22745 states to 22745 states and 27394 transitions. [2023-12-21 11:53:27,110 INFO L78 Accepts]: Start accepts. Automaton has 22745 states and 27394 transitions. Word has length 97 [2023-12-21 11:53:27,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:53:27,110 INFO L495 AbstractCegarLoop]: Abstraction has 22745 states and 27394 transitions. [2023-12-21 11:53:27,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 3.4125) internal successors, (273), 79 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:27,110 INFO L276 IsEmpty]: Start isEmpty. Operand 22745 states and 27394 transitions. [2023-12-21 11:53:27,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 11:53:27,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:53:27,111 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:53:27,116 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 11:53:27,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:53:27,316 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:53:27,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:53:27,316 INFO L85 PathProgramCache]: Analyzing trace with hash 610658217, now seen corresponding path program 1 times [2023-12-21 11:53:27,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:53:27,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848012216] [2023-12-21 11:53:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:53:27,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:53:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:53:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 38 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:28,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:53:28,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848012216] [2023-12-21 11:53:28,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848012216] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:53:28,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277774324] [2023-12-21 11:53:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:53:28,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:53:28,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:53:28,120 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 11:53:28,124 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 11:53:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:53:28,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-21 11:53:28,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:53:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 38 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:29,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:53:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 28 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:33,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277774324] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:53:33,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:53:33,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 57 [2023-12-21 11:53:33,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147870182] [2023-12-21 11:53:33,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:53:33,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-21 11:53:33,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:53:33,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-21 11:53:33,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 11:53:33,478 INFO L87 Difference]: Start difference. First operand 22745 states and 27394 transitions. Second operand has 58 states, 58 states have (on average 4.396551724137931) internal successors, (255), 57 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:54:17,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:54:17,758 INFO L93 Difference]: Finished difference Result 43300 states and 52109 transitions. [2023-12-21 11:54:17,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2023-12-21 11:54:17,758 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.396551724137931) internal successors, (255), 57 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-21 11:54:17,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:54:17,784 INFO L225 Difference]: With dead ends: 43300 [2023-12-21 11:54:17,784 INFO L226 Difference]: Without dead ends: 30609 [2023-12-21 11:54:17,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 152 SyntacticMatches, 5 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28071 ImplicationChecksByTransitivity, 36.6s TimeCoverageRelationStatistics Valid=8823, Invalid=65979, Unknown=0, NotChecked=0, Total=74802 [2023-12-21 11:54:17,792 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 2372 mSDsluCounter, 3505 mSDsCounter, 0 mSdLazyCounter, 4552 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2372 SdHoareTripleChecker+Valid, 3635 SdHoareTripleChecker+Invalid, 4680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 4552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:54:17,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2372 Valid, 3635 Invalid, 4680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 4552 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-21 11:54:17,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30609 states. [2023-12-21 11:54:22,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30609 to 24876. [2023-12-21 11:54:22,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24876 states, 24875 states have (on average 1.2042211055276382) internal successors, (29955), 24875 states have internal predecessors, (29955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:54:22,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24876 states to 24876 states and 29955 transitions. [2023-12-21 11:54:22,732 INFO L78 Accepts]: Start accepts. Automaton has 24876 states and 29955 transitions. Word has length 97 [2023-12-21 11:54:22,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:54:22,733 INFO L495 AbstractCegarLoop]: Abstraction has 24876 states and 29955 transitions. [2023-12-21 11:54:22,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.396551724137931) internal successors, (255), 57 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:54:22,733 INFO L276 IsEmpty]: Start isEmpty. Operand 24876 states and 29955 transitions. [2023-12-21 11:54:22,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 11:54:22,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:54:22,737 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:54:22,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-21 11:54:22,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:54:22,942 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:54:22,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:54:22,943 INFO L85 PathProgramCache]: Analyzing trace with hash 2079799269, now seen corresponding path program 1 times [2023-12-21 11:54:22,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:54:22,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96779702] [2023-12-21 11:54:22,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:54:22,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:54:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:54:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:54:24,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:54:24,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96779702] [2023-12-21 11:54:24,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96779702] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:54:24,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91025945] [2023-12-21 11:54:24,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:54:24,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:54:24,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:54:24,104 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 11:54:24,105 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 11:54:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:54:24,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 11:54:24,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:54:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 29 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:54:26,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:54:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:54:30,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91025945] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:54:30,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:54:30,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 21] total 60 [2023-12-21 11:54:30,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87514286] [2023-12-21 11:54:30,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:54:30,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-21 11:54:30,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:54:30,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-21 11:54:30,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=3339, Unknown=0, NotChecked=0, Total=3660 [2023-12-21 11:54:30,031 INFO L87 Difference]: Start difference. First operand 24876 states and 29955 transitions. Second operand has 61 states, 61 states have (on average 4.377049180327869) internal successors, (267), 60 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:25,200 INFO L93 Difference]: Finished difference Result 39692 states and 47729 transitions. [2023-12-21 11:55:25,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2023-12-21 11:55:25,201 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.377049180327869) internal successors, (267), 60 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-21 11:55:25,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:25,226 INFO L225 Difference]: With dead ends: 39692 [2023-12-21 11:55:25,226 INFO L226 Difference]: Without dead ends: 28191 [2023-12-21 11:55:25,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 155 SyntacticMatches, 4 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29481 ImplicationChecksByTransitivity, 47.5s TimeCoverageRelationStatistics Valid=10557, Invalid=68685, Unknown=0, NotChecked=0, Total=79242 [2023-12-21 11:55:25,258 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 2559 mSDsluCounter, 4367 mSDsCounter, 0 mSdLazyCounter, 4269 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2559 SdHoareTripleChecker+Valid, 4520 SdHoareTripleChecker+Invalid, 4452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 4269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:25,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2559 Valid, 4520 Invalid, 4452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 4269 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-21 11:55:25,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28191 states. [2023-12-21 11:55:30,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28191 to 25155. [2023-12-21 11:55:30,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25155 states, 25154 states have (on average 1.2048580742625428) internal successors, (30307), 25154 states have internal predecessors, (30307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:30,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25155 states to 25155 states and 30307 transitions. [2023-12-21 11:55:30,458 INFO L78 Accepts]: Start accepts. Automaton has 25155 states and 30307 transitions. Word has length 97 [2023-12-21 11:55:30,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:30,458 INFO L495 AbstractCegarLoop]: Abstraction has 25155 states and 30307 transitions. [2023-12-21 11:55:30,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.377049180327869) internal successors, (267), 60 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:30,459 INFO L276 IsEmpty]: Start isEmpty. Operand 25155 states and 30307 transitions. [2023-12-21 11:55:30,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 11:55:30,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:30,460 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:30,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-21 11:55:30,665 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,SelfDestructingSolverStorable34 [2023-12-21 11:55:30,668 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:30,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:30,668 INFO L85 PathProgramCache]: Analyzing trace with hash -737182576, now seen corresponding path program 1 times [2023-12-21 11:55:30,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:30,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364401411] [2023-12-21 11:55:30,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:30,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 32 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:31,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:31,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364401411] [2023-12-21 11:55:31,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364401411] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:55:31,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203027528] [2023-12-21 11:55:31,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:31,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:55:31,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:55:31,269 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 11:55:31,284 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 11:55:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:31,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-21 11:55:31,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:55:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 24 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:33,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:55:36,224 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 22 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:36,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203027528] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:55:36,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:55:36,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 23] total 64 [2023-12-21 11:55:36,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342127979] [2023-12-21 11:55:36,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:55:36,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-21 11:55:36,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:36,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-21 11:55:36,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=3714, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 11:55:36,226 INFO L87 Difference]: Start difference. First operand 25155 states and 30307 transitions. Second operand has 64 states, 64 states have (on average 5.921875) internal successors, (379), 64 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-21 11:55:51,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-12-21 11:55:51,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7615 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=4274, Invalid=22786, Unknown=0, NotChecked=0, Total=27060 [2023-12-21 11:55:51,633 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 1297 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 2819 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 2987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:51,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1297 Valid, 1524 Invalid, 2987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2819 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 11:55:51,634 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 11:55:51,640 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 11:55:51,663 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 11:55:51,663 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 11:55:51,838 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,SelfDestructingSolverStorable35 [2023-12-21 11:55:51,838 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (25155states) and FLOYD_HOARE automaton (currently 103 states, 64 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 165 known predicates. [2023-12-21 11:55:51,842 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:51,843 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 11:55:51,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:55:51 BoogieIcfgContainer [2023-12-21 11:55:51,844 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 11:55:51,845 INFO L158 Benchmark]: Toolchain (without parser) took 840509.19ms. Allocated memory was 208.7MB in the beginning and 2.3GB in the end (delta: 2.0GB). Free memory was 165.6MB in the beginning and 535.8MB in the end (delta: -370.2MB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-21 11:55:51,845 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 208.7MB. Free memory is still 160.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 11:55:51,845 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.34ms. Allocated memory is still 208.7MB. Free memory was 165.3MB in the beginning and 151.8MB in the end (delta: 13.4MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-21 11:55:51,845 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.97ms. Allocated memory is still 208.7MB. Free memory was 151.8MB in the beginning and 149.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 11:55:51,845 INFO L158 Benchmark]: Boogie Preprocessor took 43.33ms. Allocated memory is still 208.7MB. Free memory was 149.5MB in the beginning and 147.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 11:55:51,845 INFO L158 Benchmark]: RCFGBuilder took 425.65ms. Allocated memory is still 208.7MB. Free memory was 147.1MB in the beginning and 127.5MB in the end (delta: 19.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-21 11:55:51,845 INFO L158 Benchmark]: TraceAbstraction took 839776.17ms. Allocated memory was 208.7MB in the beginning and 2.3GB in the end (delta: 2.0GB). Free memory was 126.8MB in the beginning and 535.8MB in the end (delta: -409.0MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-21 11:55:51,846 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 208.7MB. Free memory is still 160.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 208.34ms. Allocated memory is still 208.7MB. Free memory was 165.3MB in the beginning and 151.8MB in the end (delta: 13.4MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.97ms. Allocated memory is still 208.7MB. Free memory was 151.8MB in the beginning and 149.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.33ms. Allocated memory is still 208.7MB. Free memory was 149.5MB in the beginning and 147.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 425.65ms. Allocated memory is still 208.7MB. Free memory was 147.1MB in the beginning and 127.5MB in the end (delta: 19.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 839776.17ms. Allocated memory was 208.7MB in the beginning and 2.3GB in the end (delta: 2.0GB). Free memory was 126.8MB in the beginning and 535.8MB in the end (delta: -409.0MB). Peak memory consumption was 1.6GB. 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: 284]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 284). Cancelled while NwaCegarLoop was constructing difference of abstraction (25155states) and FLOYD_HOARE automaton (currently 103 states, 64 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 165 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 839.7s, OverallIterations: 36, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 713.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 51270 SdHoareTripleChecker+Valid, 41.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 51270 mSDsluCounter, 58169 SdHoareTripleChecker+Invalid, 37.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54585 mSDsCounter, 3121 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56141 IncrementalHoareTripleChecker+Invalid, 59262 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3121 mSolverCounterUnsat, 3584 mSDtfsCounter, 56141 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6974 GetRequests, 2975 SyntacticMatches, 18 SemanticMatches, 3980 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444119 ImplicationChecksByTransitivity, 656.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25155occurred in iteration=35, InterpolantAutomatonStates: 3039, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 32.0s AutomataMinimizationTime, 35 MinimizatonAttempts, 77498 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 86.9s InterpolantComputationTime, 4152 NumberOfCodeBlocks, 4152 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 5866 ConstructedInterpolants, 0 QuantifiedInterpolants, 143966 SizeOfPredicates, 202 NumberOfNonLiveVariables, 7069 ConjunctsInSsa, 611 ConjunctsInUnsatCore, 78 InterpolantComputations, 15 PerfectInterpolantSequences, 1443/4542 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