/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:11:24,754 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:11:24,818 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:11:24,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:11:24,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:11:24,847 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:11:24,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:11:24,848 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:11:24,848 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:11:24,848 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:11:24,849 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:11:24,849 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:11:24,849 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:11:24,849 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:11:24,850 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:11:24,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:11:24,850 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:11:24,850 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:11:24,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:11:24,851 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:11:24,851 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:11:24,854 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:11:24,854 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:11:24,854 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:11:24,855 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:11:24,855 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:11:24,855 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:11:24,855 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:11:24,855 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:11:24,856 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:11:24,856 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:11:24,856 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:11:24,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:11:24,856 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:11:24,857 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:11:24,857 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:11:24,857 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:11:24,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:11:24,857 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:11:24,857 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:11:24,858 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:11:24,861 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:11:24,861 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:11:24,861 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:11:25,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:11:25,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:11:25,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:11:25,036 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:11:25,037 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:11:25,038 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label50.c [2023-12-15 19:11:26,047 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:11:26,367 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:11:26,368 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label50.c [2023-12-15 19:11:26,387 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6486fb590/e291aa0b3c6243fbab6455ff405f56cb/FLAG366fb6026 [2023-12-15 19:11:26,401 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6486fb590/e291aa0b3c6243fbab6455ff405f56cb [2023-12-15 19:11:26,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:11:26,404 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:11:26,405 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:11:26,405 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:11:26,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:11:26,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:11:26" (1/1) ... [2023-12-15 19:11:26,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31f596a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:11:26, skipping insertion in model container [2023-12-15 19:11:26,410 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:11:26" (1/1) ... [2023-12-15 19:11:26,474 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:11:26,625 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label50.c[1517,1530] [2023-12-15 19:11:27,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:11:27,063 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:11:27,077 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label50.c[1517,1530] [2023-12-15 19:11:27,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:11:27,253 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:11:27,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:11:27 WrapperNode [2023-12-15 19:11:27,256 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:11:27,257 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:11:27,257 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:11:27,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:11:27,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:11:27" (1/1) ... [2023-12-15 19:11:27,313 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:11:27" (1/1) ... [2023-12-15 19:11:27,479 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-15 19:11:27,479 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:11:27,480 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:11:27,480 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:11:27,480 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:11:27,488 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:11:27" (1/1) ... [2023-12-15 19:11:27,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:11:27" (1/1) ... [2023-12-15 19:11:27,529 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:11:27" (1/1) ... [2023-12-15 19:11:27,653 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]. [2023-12-15 19:11:27,653 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:11:27" (1/1) ... [2023-12-15 19:11:27,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:11:27" (1/1) ... [2023-12-15 19:11:27,745 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:11:27" (1/1) ... [2023-12-15 19:11:27,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:11:27" (1/1) ... [2023-12-15 19:11:27,805 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:11:27" (1/1) ... [2023-12-15 19:11:27,821 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:11:27" (1/1) ... [2023-12-15 19:11:27,864 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:11:27,865 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:11:27,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:11:27,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:11:27,867 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:11:27" (1/1) ... [2023-12-15 19:11:27,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:11:27,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:11:27,891 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) [2023-12-15 19:11:27,905 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 [2023-12-15 19:11:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:11:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:11:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:11:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:11:28,026 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:11:28,028 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:11:30,515 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:11:30,568 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:11:30,568 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:11:30,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:11:30 BoogieIcfgContainer [2023-12-15 19:11:30,568 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:11:30,571 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:11:30,571 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:11:30,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:11:30,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:11:26" (1/3) ... [2023-12-15 19:11:30,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad3f848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:11:30, skipping insertion in model container [2023-12-15 19:11:30,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:11:27" (2/3) ... [2023-12-15 19:11:30,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad3f848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:11:30, skipping insertion in model container [2023-12-15 19:11:30,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:11:30" (3/3) ... [2023-12-15 19:11:30,575 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label50.c [2023-12-15 19:11:30,588 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:11:30,588 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:11:30,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:11:30,648 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;@3d346463, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:11:30,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:11:30,653 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:30,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-15 19:11:30,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:11:30,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:11:30,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:11:30,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:11:30,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1707121261, now seen corresponding path program 1 times [2023-12-15 19:11:30,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:11:30,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634618276] [2023-12-15 19:11:30,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:11:30,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:11:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:11:30,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:11:30,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:11:30,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634618276] [2023-12-15 19:11:30,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634618276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:11:30,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:11:30,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:11:30,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866659342] [2023-12-15 19:11:30,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:11:30,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:11:30,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:11:30,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:11:30,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:11:30,826 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:30,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:11:30,887 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-15 19:11:30,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:11:30,891 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-15 19:11:30,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:11:30,900 INFO L225 Difference]: With dead ends: 1055 [2023-12-15 19:11:30,900 INFO L226 Difference]: Without dead ends: 526 [2023-12-15 19:11:30,903 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 [2023-12-15 19:11:30,909 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:11:30,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:11:30,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-15 19:11:30,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-15 19:11:30,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:30,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-15 19:11:30,973 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 8 [2023-12-15 19:11:30,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:11:30,974 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-15 19:11:30,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:30,974 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-15 19:11:30,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-15 19:11:30,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:11:30,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:11:30,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 19:11:30,975 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:11:30,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:11:30,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1786186575, now seen corresponding path program 1 times [2023-12-15 19:11:30,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:11:30,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535877583] [2023-12-15 19:11:30,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:11:30,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:11:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:11:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:11:31,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:11:31,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535877583] [2023-12-15 19:11:31,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535877583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:11:31,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:11:31,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:11:31,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027593177] [2023-12-15 19:11:31,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:11:31,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:11:31,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:11:31,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:11:31,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:11:31,046 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:33,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:11:33,431 INFO L93 Difference]: Finished difference Result 1522 states and 2728 transitions. [2023-12-15 19:11:33,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:11:33,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-15 19:11:33,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:11:33,438 INFO L225 Difference]: With dead ends: 1522 [2023-12-15 19:11:33,438 INFO L226 Difference]: Without dead ends: 997 [2023-12-15 19:11:33,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:11:33,440 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 502 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:11:33,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 239 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 19:11:33,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-12-15 19:11:33,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 981. [2023-12-15 19:11:33,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.7081632653061225) internal successors, (1674), 980 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:33,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1674 transitions. [2023-12-15 19:11:33,465 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1674 transitions. Word has length 8 [2023-12-15 19:11:33,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:11:33,465 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1674 transitions. [2023-12-15 19:11:33,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:33,466 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1674 transitions. [2023-12-15 19:11:33,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-15 19:11:33,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:11:33,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:11:33,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 19:11:33,474 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:11:33,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:11:33,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1336788581, now seen corresponding path program 1 times [2023-12-15 19:11:33,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:11:33,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417391341] [2023-12-15 19:11:33,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:11:33,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:11:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:11:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:11:33,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:11:33,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417391341] [2023-12-15 19:11:33,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417391341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:11:33,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:11:33,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:11:33,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724919239] [2023-12-15 19:11:33,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:11:33,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:11:33,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:11:33,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:11:33,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:11:33,633 INFO L87 Difference]: Start difference. First operand 981 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:35,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:11:35,500 INFO L93 Difference]: Finished difference Result 2842 states and 4881 transitions. [2023-12-15 19:11:35,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:11:35,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-15 19:11:35,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:11:35,506 INFO L225 Difference]: With dead ends: 2842 [2023-12-15 19:11:35,506 INFO L226 Difference]: Without dead ends: 1862 [2023-12-15 19:11:35,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:11:35,510 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 409 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:11:35,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 493 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 19:11:35,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2023-12-15 19:11:35,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1856. [2023-12-15 19:11:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 1.4555256064690028) internal successors, (2700), 1855 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:35,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2700 transitions. [2023-12-15 19:11:35,549 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2700 transitions. Word has length 73 [2023-12-15 19:11:35,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:11:35,550 INFO L495 AbstractCegarLoop]: Abstraction has 1856 states and 2700 transitions. [2023-12-15 19:11:35,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:35,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2700 transitions. [2023-12-15 19:11:35,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-15 19:11:35,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:11:35,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:11:35,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 19:11:35,553 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:11:35,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:11:35,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1735328596, now seen corresponding path program 1 times [2023-12-15 19:11:35,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:11:35,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566701527] [2023-12-15 19:11:35,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:11:35,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:11:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:11:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:11:35,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:11:35,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566701527] [2023-12-15 19:11:35,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566701527] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:11:35,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:11:35,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:11:35,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837792990] [2023-12-15 19:11:35,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:11:35,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:11:35,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:11:35,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:11:35,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:11:35,687 INFO L87 Difference]: Start difference. First operand 1856 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:37,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:11:37,328 INFO L93 Difference]: Finished difference Result 5424 states and 7894 transitions. [2023-12-15 19:11:37,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:11:37,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-12-15 19:11:37,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:11:37,337 INFO L225 Difference]: With dead ends: 5424 [2023-12-15 19:11:37,337 INFO L226 Difference]: Without dead ends: 3569 [2023-12-15 19:11:37,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:11:37,340 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 387 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:11:37,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:11:37,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states. [2023-12-15 19:11:37,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 2713. [2023-12-15 19:11:37,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2712 states have (on average 1.3160029498525074) internal successors, (3569), 2712 states have internal predecessors, (3569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:37,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 3569 transitions. [2023-12-15 19:11:37,380 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 3569 transitions. Word has length 79 [2023-12-15 19:11:37,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:11:37,381 INFO L495 AbstractCegarLoop]: Abstraction has 2713 states and 3569 transitions. [2023-12-15 19:11:37,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:37,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 3569 transitions. [2023-12-15 19:11:37,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-15 19:11:37,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:11:37,384 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:11:37,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 19:11:37,385 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:11:37,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:11:37,385 INFO L85 PathProgramCache]: Analyzing trace with hash 548384388, now seen corresponding path program 1 times [2023-12-15 19:11:37,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:11:37,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933097019] [2023-12-15 19:11:37,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:11:37,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:11:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:11:37,753 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:11:37,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:11:37,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933097019] [2023-12-15 19:11:37,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933097019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:11:37,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:11:37,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:11:37,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632847830] [2023-12-15 19:11:37,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:11:37,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:11:37,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:11:37,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:11:37,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:11:37,755 INFO L87 Difference]: Start difference. First operand 2713 states and 3569 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:40,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:11:40,038 INFO L93 Difference]: Finished difference Result 7148 states and 9642 transitions. [2023-12-15 19:11:40,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:11:40,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2023-12-15 19:11:40,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:11:40,050 INFO L225 Difference]: With dead ends: 7148 [2023-12-15 19:11:40,050 INFO L226 Difference]: Without dead ends: 4436 [2023-12-15 19:11:40,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:11:40,053 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 599 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 3102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:11:40,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 899 Invalid, 3102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 19:11:40,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4436 states. [2023-12-15 19:11:40,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4436 to 4423. [2023-12-15 19:11:40,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4423 states, 4422 states have (on average 1.2912709181365898) internal successors, (5710), 4422 states have internal predecessors, (5710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:40,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4423 states to 4423 states and 5710 transitions. [2023-12-15 19:11:40,104 INFO L78 Accepts]: Start accepts. Automaton has 4423 states and 5710 transitions. Word has length 156 [2023-12-15 19:11:40,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:11:40,104 INFO L495 AbstractCegarLoop]: Abstraction has 4423 states and 5710 transitions. [2023-12-15 19:11:40,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:40,104 INFO L276 IsEmpty]: Start isEmpty. Operand 4423 states and 5710 transitions. [2023-12-15 19:11:40,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-15 19:11:40,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:11:40,106 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:11:40,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 19:11:40,106 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:11:40,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:11:40,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1052501965, now seen corresponding path program 1 times [2023-12-15 19:11:40,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:11:40,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926659186] [2023-12-15 19:11:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:11:40,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:11:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:11:40,281 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-15 19:11:40,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:11:40,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926659186] [2023-12-15 19:11:40,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926659186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:11:40,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:11:40,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:11:40,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166492145] [2023-12-15 19:11:40,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:11:40,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:11:40,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:11:40,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:11:40,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:11:40,284 INFO L87 Difference]: Start difference. First operand 4423 states and 5710 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:42,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:11:42,484 INFO L93 Difference]: Finished difference Result 10592 states and 13803 transitions. [2023-12-15 19:11:42,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:11:42,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2023-12-15 19:11:42,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:11:42,508 INFO L225 Difference]: With dead ends: 10592 [2023-12-15 19:11:42,508 INFO L226 Difference]: Without dead ends: 6170 [2023-12-15 19:11:42,512 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 [2023-12-15 19:11:42,514 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 543 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:11:42,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 238 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 19:11:42,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2023-12-15 19:11:42,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 6152. [2023-12-15 19:11:42,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6152 states, 6151 states have (on average 1.3040156072183384) internal successors, (8021), 6151 states have internal predecessors, (8021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:42,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6152 states to 6152 states and 8021 transitions. [2023-12-15 19:11:42,597 INFO L78 Accepts]: Start accepts. Automaton has 6152 states and 8021 transitions. Word has length 162 [2023-12-15 19:11:42,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:11:42,598 INFO L495 AbstractCegarLoop]: Abstraction has 6152 states and 8021 transitions. [2023-12-15 19:11:42,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:42,598 INFO L276 IsEmpty]: Start isEmpty. Operand 6152 states and 8021 transitions. [2023-12-15 19:11:42,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-15 19:11:42,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:11:42,602 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:11:42,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 19:11:42,602 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:11:42,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:11:42,603 INFO L85 PathProgramCache]: Analyzing trace with hash 666670125, now seen corresponding path program 1 times [2023-12-15 19:11:42,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:11:42,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686880539] [2023-12-15 19:11:42,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:11:42,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:11:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:11:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:11:42,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:11:42,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686880539] [2023-12-15 19:11:42,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686880539] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:11:42,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480911420] [2023-12-15 19:11:42,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:11:42,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:11:42,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:11:42,887 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) [2023-12-15 19:11:42,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:11:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:11:42,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:11:43,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:11:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:11:43,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:11:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:11:43,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480911420] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:11:43,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:11:43,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-15 19:11:43,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86008872] [2023-12-15 19:11:43,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:11:43,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:11:43,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:11:43,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:11:43,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:11:43,509 INFO L87 Difference]: Start difference. First operand 6152 states and 8021 transitions. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:47,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:11:47,077 INFO L93 Difference]: Finished difference Result 19167 states and 25207 transitions. [2023-12-15 19:11:47,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:11:47,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2023-12-15 19:11:47,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:11:47,106 INFO L225 Difference]: With dead ends: 19167 [2023-12-15 19:11:47,106 INFO L226 Difference]: Without dead ends: 11735 [2023-12-15 19:11:47,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:11:47,115 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 785 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2708 mSolverCounterSat, 972 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 972 IncrementalHoareTripleChecker+Valid, 2708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:11:47,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 156 Invalid, 3680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [972 Valid, 2708 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-15 19:11:47,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11735 states. [2023-12-15 19:11:47,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11735 to 11268. [2023-12-15 19:11:47,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11268 states, 11267 states have (on average 1.2258808910978964) internal successors, (13812), 11267 states have internal predecessors, (13812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:47,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11268 states to 11268 states and 13812 transitions. [2023-12-15 19:11:47,278 INFO L78 Accepts]: Start accepts. Automaton has 11268 states and 13812 transitions. Word has length 228 [2023-12-15 19:11:47,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:11:47,278 INFO L495 AbstractCegarLoop]: Abstraction has 11268 states and 13812 transitions. [2023-12-15 19:11:47,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:47,279 INFO L276 IsEmpty]: Start isEmpty. Operand 11268 states and 13812 transitions. [2023-12-15 19:11:47,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-12-15 19:11:47,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:11:47,282 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:11:47,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:11:47,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:11:47,490 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:11:47,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:11:47,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1661392239, now seen corresponding path program 1 times [2023-12-15 19:11:47,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:11:47,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197230521] [2023-12-15 19:11:47,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:11:47,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:11:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:11:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:11:47,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:11:47,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197230521] [2023-12-15 19:11:47,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197230521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:11:47,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:11:47,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:11:47,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331698523] [2023-12-15 19:11:47,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:11:47,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:11:47,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:11:47,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:11:47,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:11:47,640 INFO L87 Difference]: Start difference. First operand 11268 states and 13812 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:49,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:11:49,340 INFO L93 Difference]: Finished difference Result 28061 states and 34700 transitions. [2023-12-15 19:11:49,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:11:49,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2023-12-15 19:11:49,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:11:49,365 INFO L225 Difference]: With dead ends: 28061 [2023-12-15 19:11:49,366 INFO L226 Difference]: Without dead ends: 15066 [2023-12-15 19:11:49,378 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 [2023-12-15 19:11:49,379 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 534 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:11:49,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 680 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:11:49,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15066 states. [2023-12-15 19:11:49,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15066 to 15062. [2023-12-15 19:11:49,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15062 states, 15061 states have (on average 1.1958037314919328) internal successors, (18010), 15061 states have internal predecessors, (18010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:49,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15062 states to 15062 states and 18010 transitions. [2023-12-15 19:11:49,544 INFO L78 Accepts]: Start accepts. Automaton has 15062 states and 18010 transitions. Word has length 246 [2023-12-15 19:11:49,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:11:49,544 INFO L495 AbstractCegarLoop]: Abstraction has 15062 states and 18010 transitions. [2023-12-15 19:11:49,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:49,545 INFO L276 IsEmpty]: Start isEmpty. Operand 15062 states and 18010 transitions. [2023-12-15 19:11:49,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-12-15 19:11:49,548 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:11:49,548 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:11:49,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 19:11:49,548 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:11:49,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:11:49,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1364942488, now seen corresponding path program 1 times [2023-12-15 19:11:49,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:11:49,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385479861] [2023-12-15 19:11:49,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:11:49,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:11:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:11:49,796 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:11:49,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:11:49,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385479861] [2023-12-15 19:11:49,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385479861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:11:49,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:11:49,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:11:49,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880068808] [2023-12-15 19:11:49,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:11:49,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:11:49,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:11:49,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:11:49,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:11:49,802 INFO L87 Difference]: Start difference. First operand 15062 states and 18010 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:51,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:11:51,357 INFO L93 Difference]: Finished difference Result 39938 states and 47576 transitions. [2023-12-15 19:11:51,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:11:51,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2023-12-15 19:11:51,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:11:51,396 INFO L225 Difference]: With dead ends: 39938 [2023-12-15 19:11:51,396 INFO L226 Difference]: Without dead ends: 24025 [2023-12-15 19:11:51,410 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 [2023-12-15 19:11:51,412 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 299 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:11:51,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 787 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:11:51,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24025 states. [2023-12-15 19:11:51,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24025 to 23590. [2023-12-15 19:11:51,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23590 states, 23589 states have (on average 1.1493068803255755) internal successors, (27111), 23589 states have internal predecessors, (27111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:51,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23590 states to 23590 states and 27111 transitions. [2023-12-15 19:11:51,634 INFO L78 Accepts]: Start accepts. Automaton has 23590 states and 27111 transitions. Word has length 265 [2023-12-15 19:11:51,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:11:51,634 INFO L495 AbstractCegarLoop]: Abstraction has 23590 states and 27111 transitions. [2023-12-15 19:11:51,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:51,635 INFO L276 IsEmpty]: Start isEmpty. Operand 23590 states and 27111 transitions. [2023-12-15 19:11:51,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-12-15 19:11:51,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:11:51,640 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:11:51,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 19:11:51,640 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:11:51,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:11:51,641 INFO L85 PathProgramCache]: Analyzing trace with hash 336676864, now seen corresponding path program 1 times [2023-12-15 19:11:51,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:11:51,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749424184] [2023-12-15 19:11:51,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:11:51,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:11:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:11:51,890 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-15 19:11:51,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:11:51,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749424184] [2023-12-15 19:11:51,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749424184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:11:51,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:11:51,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:11:51,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455783983] [2023-12-15 19:11:51,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:11:51,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:11:51,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:11:51,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:11:51,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:11:51,892 INFO L87 Difference]: Start difference. First operand 23590 states and 27111 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 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) [2023-12-15 19:11:53,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:11:53,425 INFO L93 Difference]: Finished difference Result 54404 states and 62872 transitions. [2023-12-15 19:11:53,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:11:53,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 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 347 [2023-12-15 19:11:53,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:11:53,465 INFO L225 Difference]: With dead ends: 54404 [2023-12-15 19:11:53,466 INFO L226 Difference]: Without dead ends: 30815 [2023-12-15 19:11:53,486 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 [2023-12-15 19:11:53,487 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 275 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:11:53,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 781 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:11:53,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30815 states. [2023-12-15 19:11:53,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30815 to 30390. [2023-12-15 19:11:53,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30390 states, 30389 states have (on average 1.1316594820494257) internal successors, (34390), 30389 states have internal predecessors, (34390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:53,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30390 states to 30390 states and 34390 transitions. [2023-12-15 19:11:53,772 INFO L78 Accepts]: Start accepts. Automaton has 30390 states and 34390 transitions. Word has length 347 [2023-12-15 19:11:53,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:11:53,773 INFO L495 AbstractCegarLoop]: Abstraction has 30390 states and 34390 transitions. [2023-12-15 19:11:53,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 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) [2023-12-15 19:11:53,773 INFO L276 IsEmpty]: Start isEmpty. Operand 30390 states and 34390 transitions. [2023-12-15 19:11:53,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-12-15 19:11:53,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:11:53,778 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:11:53,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 19:11:53,779 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:11:53,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:11:53,779 INFO L85 PathProgramCache]: Analyzing trace with hash -167361755, now seen corresponding path program 1 times [2023-12-15 19:11:53,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:11:53,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260079446] [2023-12-15 19:11:53,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:11:53,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:11:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:11:54,180 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:11:54,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:11:54,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260079446] [2023-12-15 19:11:54,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260079446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:11:54,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:11:54,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:11:54,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036075126] [2023-12-15 19:11:54,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:11:54,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:11:54,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:11:54,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:11:54,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:11:54,182 INFO L87 Difference]: Start difference. First operand 30390 states and 34390 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:55,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:11:55,892 INFO L93 Difference]: Finished difference Result 71892 states and 81833 transitions. [2023-12-15 19:11:55,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:11:55,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 370 [2023-12-15 19:11:55,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:11:55,941 INFO L225 Difference]: With dead ends: 71892 [2023-12-15 19:11:55,941 INFO L226 Difference]: Without dead ends: 41503 [2023-12-15 19:11:55,963 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 [2023-12-15 19:11:55,963 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 334 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:11:55,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 664 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:11:55,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41503 states. [2023-12-15 19:11:56,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41503 to 40196. [2023-12-15 19:11:56,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40196 states, 40195 states have (on average 1.1419330762532653) internal successors, (45900), 40195 states have internal predecessors, (45900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:56,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40196 states to 40196 states and 45900 transitions. [2023-12-15 19:11:56,458 INFO L78 Accepts]: Start accepts. Automaton has 40196 states and 45900 transitions. Word has length 370 [2023-12-15 19:11:56,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:11:56,459 INFO L495 AbstractCegarLoop]: Abstraction has 40196 states and 45900 transitions. [2023-12-15 19:11:56,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:56,459 INFO L276 IsEmpty]: Start isEmpty. Operand 40196 states and 45900 transitions. [2023-12-15 19:11:56,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2023-12-15 19:11:56,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:11:56,466 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:11:56,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 19:11:56,466 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:11:56,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:11:56,467 INFO L85 PathProgramCache]: Analyzing trace with hash -810568491, now seen corresponding path program 1 times [2023-12-15 19:11:56,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:11:56,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532544076] [2023-12-15 19:11:56,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:11:56,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:11:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:11:56,688 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-15 19:11:56,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:11:56,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532544076] [2023-12-15 19:11:56,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532544076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:11:56,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:11:56,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:11:56,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436610852] [2023-12-15 19:11:56,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:11:56,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:11:56,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:11:56,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:11:56,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:11:56,690 INFO L87 Difference]: Start difference. First operand 40196 states and 45900 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:58,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:11:58,550 INFO L93 Difference]: Finished difference Result 88515 states and 100808 transitions. [2023-12-15 19:11:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:11:58,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2023-12-15 19:11:58,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:11:58,602 INFO L225 Difference]: With dead ends: 88515 [2023-12-15 19:11:58,602 INFO L226 Difference]: Without dead ends: 47895 [2023-12-15 19:11:58,629 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 [2023-12-15 19:11:58,629 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 510 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:11:58,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 165 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:11:58,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47895 states. [2023-12-15 19:11:59,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47895 to 39341. [2023-12-15 19:11:59,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39341 states, 39340 states have (on average 1.143568886629385) internal successors, (44988), 39340 states have internal predecessors, (44988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:59,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39341 states to 39341 states and 44988 transitions. [2023-12-15 19:11:59,157 INFO L78 Accepts]: Start accepts. Automaton has 39341 states and 44988 transitions. Word has length 371 [2023-12-15 19:11:59,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:11:59,157 INFO L495 AbstractCegarLoop]: Abstraction has 39341 states and 44988 transitions. [2023-12-15 19:11:59,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:59,158 INFO L276 IsEmpty]: Start isEmpty. Operand 39341 states and 44988 transitions. [2023-12-15 19:11:59,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-12-15 19:11:59,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:11:59,165 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:11:59,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 19:11:59,165 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:11:59,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:11:59,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1592160956, now seen corresponding path program 1 times [2023-12-15 19:11:59,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:11:59,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508608152] [2023-12-15 19:11:59,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:11:59,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:11:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:11:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:11:59,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:11:59,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508608152] [2023-12-15 19:11:59,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508608152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:11:59,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:11:59,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:11:59,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606186986] [2023-12-15 19:11:59,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:11:59,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:11:59,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:11:59,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:11:59,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:11:59,400 INFO L87 Difference]: Start difference. First operand 39341 states and 44988 transitions. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:00,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:00,913 INFO L93 Difference]: Finished difference Result 77823 states and 89032 transitions. [2023-12-15 19:12:00,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:12:00,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 407 [2023-12-15 19:12:00,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:00,953 INFO L225 Difference]: With dead ends: 77823 [2023-12-15 19:12:00,953 INFO L226 Difference]: Without dead ends: 38482 [2023-12-15 19:12:00,976 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 [2023-12-15 19:12:00,977 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 496 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:00,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 720 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:12:01,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38482 states. [2023-12-15 19:12:01,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38482 to 37629. [2023-12-15 19:12:01,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37629 states, 37628 states have (on average 1.1056128415010098) internal successors, (41602), 37628 states have internal predecessors, (41602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:01,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37629 states to 37629 states and 41602 transitions. [2023-12-15 19:12:01,387 INFO L78 Accepts]: Start accepts. Automaton has 37629 states and 41602 transitions. Word has length 407 [2023-12-15 19:12:01,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:01,388 INFO L495 AbstractCegarLoop]: Abstraction has 37629 states and 41602 transitions. [2023-12-15 19:12:01,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:01,388 INFO L276 IsEmpty]: Start isEmpty. Operand 37629 states and 41602 transitions. [2023-12-15 19:12:01,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-12-15 19:12:01,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:01,394 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:12:01,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 19:12:01,395 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:01,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:01,395 INFO L85 PathProgramCache]: Analyzing trace with hash -644490961, now seen corresponding path program 1 times [2023-12-15 19:12:01,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:01,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759301833] [2023-12-15 19:12:01,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:01,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:12:01,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:01,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759301833] [2023-12-15 19:12:01,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759301833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:01,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:01,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:12:01,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116453829] [2023-12-15 19:12:01,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:01,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:12:01,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:01,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:12:01,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:12:01,929 INFO L87 Difference]: Start difference. First operand 37629 states and 41602 transitions. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:03,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:03,430 INFO L93 Difference]: Finished difference Result 81658 states and 90641 transitions. [2023-12-15 19:12:03,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:12:03,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 413 [2023-12-15 19:12:03,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:03,477 INFO L225 Difference]: With dead ends: 81658 [2023-12-15 19:12:03,477 INFO L226 Difference]: Without dead ends: 44030 [2023-12-15 19:12:03,501 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 [2023-12-15 19:12:03,502 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 293 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:03,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 773 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:12:03,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44030 states. [2023-12-15 19:12:04,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44030 to 44023. [2023-12-15 19:12:04,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44023 states, 44022 states have (on average 1.105674435509518) internal successors, (48674), 44022 states have internal predecessors, (48674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:04,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44023 states to 44023 states and 48674 transitions. [2023-12-15 19:12:04,083 INFO L78 Accepts]: Start accepts. Automaton has 44023 states and 48674 transitions. Word has length 413 [2023-12-15 19:12:04,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:04,084 INFO L495 AbstractCegarLoop]: Abstraction has 44023 states and 48674 transitions. [2023-12-15 19:12:04,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:04,084 INFO L276 IsEmpty]: Start isEmpty. Operand 44023 states and 48674 transitions. [2023-12-15 19:12:04,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-15 19:12:04,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:04,094 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:12:04,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 19:12:04,094 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:04,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:04,095 INFO L85 PathProgramCache]: Analyzing trace with hash -820996475, now seen corresponding path program 1 times [2023-12-15 19:12:04,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:04,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425459536] [2023-12-15 19:12:04,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:04,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:04,474 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:12:04,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:04,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425459536] [2023-12-15 19:12:04,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425459536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:04,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:04,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:12:04,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697518812] [2023-12-15 19:12:04,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:04,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:12:04,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:04,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:12:04,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:12:04,478 INFO L87 Difference]: Start difference. First operand 44023 states and 48674 transitions. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:06,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:06,178 INFO L93 Difference]: Finished difference Result 107631 states and 119356 transitions. [2023-12-15 19:12:06,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:12:06,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 439 [2023-12-15 19:12:06,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:06,252 INFO L225 Difference]: With dead ends: 107631 [2023-12-15 19:12:06,252 INFO L226 Difference]: Without dead ends: 63608 [2023-12-15 19:12:06,404 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 [2023-12-15 19:12:06,405 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 504 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:06,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 294 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:12:06,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63608 states. [2023-12-15 19:12:06,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63608 to 60606. [2023-12-15 19:12:06,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60606 states, 60605 states have (on average 1.104776833594588) internal successors, (66955), 60605 states have internal predecessors, (66955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:06,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60606 states to 60606 states and 66955 transitions. [2023-12-15 19:12:06,950 INFO L78 Accepts]: Start accepts. Automaton has 60606 states and 66955 transitions. Word has length 439 [2023-12-15 19:12:06,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:06,950 INFO L495 AbstractCegarLoop]: Abstraction has 60606 states and 66955 transitions. [2023-12-15 19:12:06,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:06,951 INFO L276 IsEmpty]: Start isEmpty. Operand 60606 states and 66955 transitions. [2023-12-15 19:12:06,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-12-15 19:12:06,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:06,960 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:12:06,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 19:12:06,960 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:06,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:06,960 INFO L85 PathProgramCache]: Analyzing trace with hash -2029567293, now seen corresponding path program 1 times [2023-12-15 19:12:06,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:06,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129494744] [2023-12-15 19:12:07,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:07,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:07,400 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:12:07,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:07,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129494744] [2023-12-15 19:12:07,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129494744] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:07,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:07,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:12:07,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445658956] [2023-12-15 19:12:07,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:07,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:12:07,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:07,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:12:07,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:12:07,402 INFO L87 Difference]: Start difference. First operand 60606 states and 66955 transitions. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:09,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:09,356 INFO L93 Difference]: Finished difference Result 135688 states and 149733 transitions. [2023-12-15 19:12:09,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:12:09,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 441 [2023-12-15 19:12:09,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:09,448 INFO L225 Difference]: With dead ends: 135688 [2023-12-15 19:12:09,448 INFO L226 Difference]: Without dead ends: 75083 [2023-12-15 19:12:09,491 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 [2023-12-15 19:12:09,491 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 291 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:09,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 389 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:12:09,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75083 states. [2023-12-15 19:12:10,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75083 to 71663. [2023-12-15 19:12:10,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71663 states, 71662 states have (on average 1.0993692612542212) internal successors, (78783), 71662 states have internal predecessors, (78783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:10,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71663 states to 71663 states and 78783 transitions. [2023-12-15 19:12:10,544 INFO L78 Accepts]: Start accepts. Automaton has 71663 states and 78783 transitions. Word has length 441 [2023-12-15 19:12:10,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:10,545 INFO L495 AbstractCegarLoop]: Abstraction has 71663 states and 78783 transitions. [2023-12-15 19:12:10,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:10,545 INFO L276 IsEmpty]: Start isEmpty. Operand 71663 states and 78783 transitions. [2023-12-15 19:12:10,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2023-12-15 19:12:10,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:10,556 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:12:10,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 19:12:10,557 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:10,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:10,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1017192003, now seen corresponding path program 1 times [2023-12-15 19:12:10,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:10,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267811735] [2023-12-15 19:12:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:10,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:11,098 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 281 proven. 82 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-15 19:12:11,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:11,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267811735] [2023-12-15 19:12:11,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267811735] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:12:11,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274737924] [2023-12-15 19:12:11,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:11,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:12:11,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:12:11,100 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) [2023-12-15 19:12:11,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:12:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:11,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 19:12:11,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:12:11,730 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 206 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:12:11,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:12:12,170 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 370 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:12:12,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274737924] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:12:12,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:12:12,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2023-12-15 19:12:12,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386554985] [2023-12-15 19:12:12,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:12,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:12:12,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:12,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:12:12,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:12:12,173 INFO L87 Difference]: Start difference. First operand 71663 states and 78783 transitions. Second operand has 5 states, 5 states have (on average 95.6) internal successors, (478), 4 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:14,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:14,857 INFO L93 Difference]: Finished difference Result 159946 states and 176111 transitions. [2023-12-15 19:12:14,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:12:14,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 95.6) internal successors, (478), 4 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 478 [2023-12-15 19:12:14,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:14,948 INFO L225 Difference]: With dead ends: 159946 [2023-12-15 19:12:14,948 INFO L226 Difference]: Without dead ends: 86157 [2023-12-15 19:12:14,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 951 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:12:14,962 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 967 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:14,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 135 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 19:12:15,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86157 states. [2023-12-15 19:12:15,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86157 to 79350. [2023-12-15 19:12:15,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79350 states, 79349 states have (on average 1.1009716568576793) internal successors, (87361), 79349 states have internal predecessors, (87361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:15,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79350 states to 79350 states and 87361 transitions. [2023-12-15 19:12:15,828 INFO L78 Accepts]: Start accepts. Automaton has 79350 states and 87361 transitions. Word has length 478 [2023-12-15 19:12:15,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:15,828 INFO L495 AbstractCegarLoop]: Abstraction has 79350 states and 87361 transitions. [2023-12-15 19:12:15,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.6) internal successors, (478), 4 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:15,828 INFO L276 IsEmpty]: Start isEmpty. Operand 79350 states and 87361 transitions. [2023-12-15 19:12:15,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-15 19:12:15,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:15,840 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:12:15,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:12:16,041 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 [2023-12-15 19:12:16,041 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:16,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:16,042 INFO L85 PathProgramCache]: Analyzing trace with hash -760108143, now seen corresponding path program 1 times [2023-12-15 19:12:16,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:16,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663998357] [2023-12-15 19:12:16,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:16,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:16,481 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-15 19:12:16,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:16,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663998357] [2023-12-15 19:12:16,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663998357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:16,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:16,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:12:16,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816421285] [2023-12-15 19:12:16,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:16,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:12:16,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:16,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:12:16,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:12:16,482 INFO L87 Difference]: Start difference. First operand 79350 states and 87361 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:18,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:18,480 INFO L93 Difference]: Finished difference Result 169782 states and 186844 transitions. [2023-12-15 19:12:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:12:18,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 490 [2023-12-15 19:12:18,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:18,590 INFO L225 Difference]: With dead ends: 169782 [2023-12-15 19:12:18,590 INFO L226 Difference]: Without dead ends: 90433 [2023-12-15 19:12:18,626 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 [2023-12-15 19:12:18,627 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 298 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:18,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 393 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:12:18,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90433 states. [2023-12-15 19:12:19,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90433 to 77650. [2023-12-15 19:12:19,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77650 states, 77649 states have (on average 1.0979793686976007) internal successors, (85257), 77649 states have internal predecessors, (85257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:19,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77650 states to 77650 states and 85257 transitions. [2023-12-15 19:12:19,514 INFO L78 Accepts]: Start accepts. Automaton has 77650 states and 85257 transitions. Word has length 490 [2023-12-15 19:12:19,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:19,514 INFO L495 AbstractCegarLoop]: Abstraction has 77650 states and 85257 transitions. [2023-12-15 19:12:19,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:19,514 INFO L276 IsEmpty]: Start isEmpty. Operand 77650 states and 85257 transitions. [2023-12-15 19:12:19,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2023-12-15 19:12:19,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:19,526 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:12:19,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 19:12:19,527 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:19,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:19,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1987967215, now seen corresponding path program 1 times [2023-12-15 19:12:19,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:19,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288801173] [2023-12-15 19:12:19,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:19,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-15 19:12:19,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:19,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288801173] [2023-12-15 19:12:19,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288801173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:19,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:19,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:12:19,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621259453] [2023-12-15 19:12:19,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:19,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:12:19,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:19,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:12:19,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:12:19,885 INFO L87 Difference]: Start difference. First operand 77650 states and 85257 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:20,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:12:20,987 INFO L93 Difference]: Finished difference Result 151030 states and 165742 transitions. [2023-12-15 19:12:20,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:12:20,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 501 [2023-12-15 19:12:20,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:12:21,066 INFO L225 Difference]: With dead ends: 151030 [2023-12-15 19:12:21,067 INFO L226 Difference]: Without dead ends: 73381 [2023-12-15 19:12:21,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:12:21,116 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 620 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:21,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 100 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 19:12:21,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73381 states. [2023-12-15 19:12:21,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73381 to 72940. [2023-12-15 19:12:21,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72940 states, 72939 states have (on average 1.0967795006786494) internal successors, (79998), 72939 states have internal predecessors, (79998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:21,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72940 states to 72940 states and 79998 transitions. [2023-12-15 19:12:21,957 INFO L78 Accepts]: Start accepts. Automaton has 72940 states and 79998 transitions. Word has length 501 [2023-12-15 19:12:21,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:12:21,957 INFO L495 AbstractCegarLoop]: Abstraction has 72940 states and 79998 transitions. [2023-12-15 19:12:21,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:12:21,958 INFO L276 IsEmpty]: Start isEmpty. Operand 72940 states and 79998 transitions. [2023-12-15 19:12:21,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2023-12-15 19:12:21,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:12:21,968 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:12:21,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 19:12:21,969 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:12:21,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:12:21,969 INFO L85 PathProgramCache]: Analyzing trace with hash -519654894, now seen corresponding path program 1 times [2023-12-15 19:12:21,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:12:21,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178484548] [2023-12-15 19:12:21,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:12:21,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:12:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:12:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 355 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-15 19:12:22,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:12:22,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178484548] [2023-12-15 19:12:22,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178484548] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:12:22,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:12:22,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:12:22,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369397429] [2023-12-15 19:12:22,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:12:22,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:12:22,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:12:22,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:12:22,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:12:22,341 INFO L87 Difference]: Start difference. First operand 72940 states and 79998 transitions. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 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... [2023-12-15 19:12:24,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:12:24,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:12:24,683 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 784 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2209 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 2209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:12:24,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 240 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 2209 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 19:12:24,688 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:12:24,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 19:12:24,689 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (72940states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (99235 states constructed, input type IntersectNwa). [2023-12-15 19:12:24,694 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] [2023-12-15 19:12:24,708 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:12:24,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:12:24 BoogieIcfgContainer [2023-12-15 19:12:24,710 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:12:24,710 INFO L158 Benchmark]: Toolchain (without parser) took 58305.73ms. Allocated memory was 318.8MB in the beginning and 4.9GB in the end (delta: 4.6GB). Free memory was 264.5MB in the beginning and 3.6GB in the end (delta: -3.4GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-15 19:12:24,710 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 207.6MB. Free memory is still 154.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:12:24,710 INFO L158 Benchmark]: CACSL2BoogieTranslator took 850.67ms. Allocated memory is still 318.8MB. Free memory was 264.0MB in the beginning and 218.0MB in the end (delta: 46.0MB). Peak memory consumption was 71.7MB. Max. memory is 8.0GB. [2023-12-15 19:12:24,711 INFO L158 Benchmark]: Boogie Procedure Inliner took 222.73ms. Allocated memory is still 318.8MB. Free memory was 218.0MB in the beginning and 154.1MB in the end (delta: 64.0MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. [2023-12-15 19:12:24,711 INFO L158 Benchmark]: Boogie Preprocessor took 383.78ms. Allocated memory is still 318.8MB. Free memory was 154.1MB in the beginning and 146.3MB in the end (delta: 7.8MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. [2023-12-15 19:12:24,711 INFO L158 Benchmark]: RCFGBuilder took 2703.09ms. Allocated memory was 318.8MB in the beginning and 610.3MB in the end (delta: 291.5MB). Free memory was 146.3MB in the beginning and 253.1MB in the end (delta: -106.8MB). Peak memory consumption was 198.3MB. Max. memory is 8.0GB. [2023-12-15 19:12:24,711 INFO L158 Benchmark]: TraceAbstraction took 54139.13ms. Allocated memory was 610.3MB in the beginning and 4.9GB in the end (delta: 4.3GB). Free memory was 252.6MB in the beginning and 3.6GB in the end (delta: -3.4GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-15 19:12:24,712 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 207.6MB. Free memory is still 154.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 850.67ms. Allocated memory is still 318.8MB. Free memory was 264.0MB in the beginning and 218.0MB in the end (delta: 46.0MB). Peak memory consumption was 71.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 222.73ms. Allocated memory is still 318.8MB. Free memory was 218.0MB in the beginning and 154.1MB in the end (delta: 64.0MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 383.78ms. Allocated memory is still 318.8MB. Free memory was 154.1MB in the beginning and 146.3MB in the end (delta: 7.8MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. * RCFGBuilder took 2703.09ms. Allocated memory was 318.8MB in the beginning and 610.3MB in the end (delta: 291.5MB). Free memory was 146.3MB in the beginning and 253.1MB in the end (delta: -106.8MB). Peak memory consumption was 198.3MB. Max. memory is 8.0GB. * TraceAbstraction took 54139.13ms. Allocated memory was 610.3MB in the beginning and 4.9GB in the end (delta: 4.3GB). Free memory was 252.6MB in the beginning and 3.6GB in the end (delta: -3.4GB). Peak memory consumption was 1.2GB. 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: 45]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 45). Cancelled while NwaCegarLoop was constructing difference of abstraction (72940states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (99235 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data [2023-12-15 19:12:24,715 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 CFG has 1 procedures, 528 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 54.1s, OverallIterations: 20, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 38.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9430 SdHoareTripleChecker+Valid, 33.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9430 mSDsluCounter, 9670 SdHoareTripleChecker+Invalid, 27.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1124 mSDsCounter, 6374 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27766 IncrementalHoareTripleChecker+Invalid, 34140 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6374 mSolverCounterUnsat, 8546 mSDtfsCounter, 27766 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1466 GetRequests, 1436 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79350occurred in iteration=17, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 39414 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 6701 NumberOfCodeBlocks, 6701 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 7383 ConstructedInterpolants, 0 QuantifiedInterpolants, 18803 SizeOfPredicates, 0 NumberOfNonLiveVariables, 938 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 24 InterpolantComputations, 20 PerfectInterpolantSequences, 4869/5279 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