/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 17:08:49,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 17:08:49,712 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 17:08:49,718 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 17:08:49,719 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 17:08:49,742 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 17:08:49,742 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 17:08:49,742 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 17:08:49,743 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 17:08:49,746 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 17:08:49,746 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 17:08:49,746 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 17:08:49,747 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 17:08:49,748 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 17:08:49,748 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 17:08:49,748 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 17:08:49,748 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 17:08:49,748 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 17:08:49,749 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 17:08:49,749 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 17:08:49,749 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 17:08:49,749 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 17:08:49,749 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 17:08:49,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 17:08:49,750 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 17:08:49,750 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 17:08:49,750 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 17:08:49,750 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 17:08:49,750 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 17:08:49,751 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 17:08:49,751 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 17:08:49,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 17:08:49,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:08:49,752 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 17:08:49,752 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 17:08:49,752 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 17:08:49,752 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 17:08:49,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 17:08:49,752 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 17:08:49,752 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 17:08:49,752 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 17:08:49,753 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 17:08:49,753 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 17:08:49,753 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 17:08:49,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 17:08:50,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 17:08:50,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 17:08:50,010 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 17:08:50,012 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 17:08:50,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label50.c [2023-12-20 17:08:51,152 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 17:08:51,509 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 17:08:51,510 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label50.c [2023-12-20 17:08:51,537 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e38a3a32a/1a0f9d0fab764a3990ca43b442104a26/FLAGc9455261b [2023-12-20 17:08:51,549 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e38a3a32a/1a0f9d0fab764a3990ca43b442104a26 [2023-12-20 17:08:51,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 17:08:51,552 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 17:08:51,554 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 17:08:51,554 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 17:08:51,557 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 17:08:51,558 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:08:51" (1/1) ... [2023-12-20 17:08:51,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31aada90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:51, skipping insertion in model container [2023-12-20 17:08:51,558 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:08:51" (1/1) ... [2023-12-20 17:08:51,651 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 17:08:51,876 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/Problem13_label50.c[8814,8827] [2023-12-20 17:08:52,496 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:08:52,504 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 17:08:52,530 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/Problem13_label50.c[8814,8827] [2023-12-20 17:08:52,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:08:52,886 INFO L206 MainTranslator]: Completed translation [2023-12-20 17:08:52,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:52 WrapperNode [2023-12-20 17:08:52,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 17:08:52,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 17:08:52,889 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 17:08:52,889 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 17:08:52,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:52" (1/1) ... [2023-12-20 17:08:52,941 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:52" (1/1) ... [2023-12-20 17:08:53,290 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-20 17:08:53,290 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 17:08:53,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 17:08:53,291 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 17:08:53,291 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 17:08:53,298 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:52" (1/1) ... [2023-12-20 17:08:53,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:52" (1/1) ... [2023-12-20 17:08:53,350 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:52" (1/1) ... [2023-12-20 17:08:53,674 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]. [2023-12-20 17:08:53,674 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:52" (1/1) ... [2023-12-20 17:08:53,674 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:52" (1/1) ... [2023-12-20 17:08:53,884 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:52" (1/1) ... [2023-12-20 17:08:53,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:52" (1/1) ... [2023-12-20 17:08:53,963 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:52" (1/1) ... [2023-12-20 17:08:53,999 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:52" (1/1) ... [2023-12-20 17:08:54,055 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 17:08:54,055 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 17:08:54,055 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 17:08:54,056 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 17:08:54,056 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:52" (1/1) ... [2023-12-20 17:08:54,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:08:54,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:08:54,077 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) [2023-12-20 17:08:54,096 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 [2023-12-20 17:08:54,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 17:08:54,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 17:08:54,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 17:08:54,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 17:08:54,208 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 17:08:54,210 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 17:08:57,936 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 17:08:57,977 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 17:08:57,977 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 17:08:57,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:08:57 BoogieIcfgContainer [2023-12-20 17:08:57,978 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 17:08:57,979 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 17:08:57,979 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 17:08:57,983 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 17:08:57,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:08:51" (1/3) ... [2023-12-20 17:08:57,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a92875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:08:57, skipping insertion in model container [2023-12-20 17:08:57,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:08:52" (2/3) ... [2023-12-20 17:08:57,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a92875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:08:57, skipping insertion in model container [2023-12-20 17:08:57,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:08:57" (3/3) ... [2023-12-20 17:08:57,985 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label50.c [2023-12-20 17:08:57,998 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 17:08:57,998 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 17:08:58,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 17:08:58,046 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;@1e875db7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 17:08:58,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 17:08:58,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:58,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 17:08:58,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:58,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:58,058 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:58,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:58,061 INFO L85 PathProgramCache]: Analyzing trace with hash 625072379, now seen corresponding path program 1 times [2023-12-20 17:08:58,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:58,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255193411] [2023-12-20 17:08:58,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:58,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:08:58,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:58,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255193411] [2023-12-20 17:08:58,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255193411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:58,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:58,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:08:58,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485242165] [2023-12-20 17:08:58,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:58,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 17:08:58,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:58,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 17:08:58,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:08:58,261 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 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 30.5) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:58,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:58,316 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-20 17:08:58,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 17:08:58,318 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 17:08:58,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:58,330 INFO L225 Difference]: With dead ends: 2071 [2023-12-20 17:08:58,330 INFO L226 Difference]: Without dead ends: 1034 [2023-12-20 17:08:58,335 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 [2023-12-20 17:08:58,337 INFO L413 NwaCegarLoop]: 1876 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, 1876 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 [2023-12-20 17:08:58,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 17:08:58,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-20 17:08:58,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-20 17:08:58,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:58,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-20 17:08:58,410 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 61 [2023-12-20 17:08:58,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:58,410 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-20 17:08:58,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:58,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-20 17:08:58,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 17:08:58,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:58,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:58,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 17:08:58,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:58,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:58,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1785996915, now seen corresponding path program 1 times [2023-12-20 17:08:58,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:58,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195496756] [2023-12-20 17:08:58,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:58,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:08:58,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:58,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195496756] [2023-12-20 17:08:58,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195496756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:58,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:58,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:08:58,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218751049] [2023-12-20 17:08:58,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:58,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:08:58,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:58,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:08:58,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:08:58,908 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:04,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:04,008 INFO L93 Difference]: Finished difference Result 3696 states and 6823 transitions. [2023-12-20 17:09:04,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:09:04,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 17:09:04,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:04,021 INFO L225 Difference]: With dead ends: 3696 [2023-12-20 17:09:04,022 INFO L226 Difference]: Without dead ends: 2663 [2023-12-20 17:09:04,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:09:04,025 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 2638 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 4127 mSolverCounterSat, 1487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2638 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 5614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1487 IncrementalHoareTripleChecker+Valid, 4127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:04,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2638 Valid, 1017 Invalid, 5614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1487 Valid, 4127 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-20 17:09:04,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2023-12-20 17:09:04,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2662. [2023-12-20 17:09:04,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2661 states have (on average 1.4611048478015785) internal successors, (3888), 2661 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:04,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3888 transitions. [2023-12-20 17:09:04,113 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3888 transitions. Word has length 61 [2023-12-20 17:09:04,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:04,114 INFO L495 AbstractCegarLoop]: Abstraction has 2662 states and 3888 transitions. [2023-12-20 17:09:04,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:04,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3888 transitions. [2023-12-20 17:09:04,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-20 17:09:04,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:04,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:09:04,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 17:09:04,127 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:04,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:04,129 INFO L85 PathProgramCache]: Analyzing trace with hash -302036340, now seen corresponding path program 1 times [2023-12-20 17:09:04,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:04,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276782397] [2023-12-20 17:09:04,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:04,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:04,465 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:09:04,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:04,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276782397] [2023-12-20 17:09:04,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276782397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:04,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:04,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:09:04,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16244747] [2023-12-20 17:09:04,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:04,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:09:04,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:04,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:09:04,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:09:04,474 INFO L87 Difference]: Start difference. First operand 2662 states and 3888 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:09,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:09,769 INFO L93 Difference]: Finished difference Result 7863 states and 12668 transitions. [2023-12-20 17:09:09,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:09:09,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2023-12-20 17:09:09,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:09,790 INFO L225 Difference]: With dead ends: 7863 [2023-12-20 17:09:09,790 INFO L226 Difference]: Without dead ends: 5989 [2023-12-20 17:09:09,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:09:09,797 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 1694 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 5284 mSolverCounterSat, 843 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 6127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 843 IncrementalHoareTripleChecker+Valid, 5284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:09,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1694 Valid, 1066 Invalid, 6127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [843 Valid, 5284 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-20 17:09:09,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5989 states. [2023-12-20 17:09:09,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5989 to 5858. [2023-12-20 17:09:09,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5858 states, 5857 states have (on average 1.4452791531500768) internal successors, (8465), 5857 states have internal predecessors, (8465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:09,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 8465 transitions. [2023-12-20 17:09:09,875 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 8465 transitions. Word has length 186 [2023-12-20 17:09:09,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:09,880 INFO L495 AbstractCegarLoop]: Abstraction has 5858 states and 8465 transitions. [2023-12-20 17:09:09,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:09,884 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 8465 transitions. [2023-12-20 17:09:09,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-20 17:09:09,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:09,886 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:09:09,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 17:09:09,886 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:09,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:09,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1019162791, now seen corresponding path program 1 times [2023-12-20 17:09:09,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:09,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121088228] [2023-12-20 17:09:09,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:09,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:10,052 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-20 17:09:10,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:10,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121088228] [2023-12-20 17:09:10,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121088228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:10,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:10,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:09:10,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746304381] [2023-12-20 17:09:10,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:10,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:10,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:10,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:10,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:09:10,054 INFO L87 Difference]: Start difference. First operand 5858 states and 8465 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:13,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:13,318 INFO L93 Difference]: Finished difference Result 15686 states and 23389 transitions. [2023-12-20 17:09:13,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:13,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have 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 [2023-12-20 17:09:13,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:13,345 INFO L225 Difference]: With dead ends: 15686 [2023-12-20 17:09:13,345 INFO L226 Difference]: Without dead ends: 10616 [2023-12-20 17:09:13,351 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 [2023-12-20 17:09:13,351 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 919 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 3311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:13,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 916 Invalid, 3311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 17:09:13,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10616 states. [2023-12-20 17:09:13,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10616 to 10607. [2023-12-20 17:09:13,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10607 states, 10606 states have (on average 1.3551763152932303) internal successors, (14373), 10606 states have internal predecessors, (14373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:13,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10607 states to 10607 states and 14373 transitions. [2023-12-20 17:09:13,484 INFO L78 Accepts]: Start accepts. Automaton has 10607 states and 14373 transitions. Word has length 228 [2023-12-20 17:09:13,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:13,485 INFO L495 AbstractCegarLoop]: Abstraction has 10607 states and 14373 transitions. [2023-12-20 17:09:13,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:13,486 INFO L276 IsEmpty]: Start isEmpty. Operand 10607 states and 14373 transitions. [2023-12-20 17:09:13,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-20 17:09:13,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:13,488 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:09:13,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 17:09:13,489 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:13,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:13,489 INFO L85 PathProgramCache]: Analyzing trace with hash 207178262, now seen corresponding path program 1 times [2023-12-20 17:09:13,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:13,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110695364] [2023-12-20 17:09:13,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:13,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:13,664 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-20 17:09:13,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:13,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110695364] [2023-12-20 17:09:13,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110695364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:13,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:13,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:09:13,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393144901] [2023-12-20 17:09:13,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:13,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:13,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:13,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:13,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:09:13,666 INFO L87 Difference]: Start difference. First operand 10607 states and 14373 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:16,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:16,971 INFO L93 Difference]: Finished difference Result 28350 states and 39239 transitions. [2023-12-20 17:09:16,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:16,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2023-12-20 17:09:16,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:17,023 INFO L225 Difference]: With dead ends: 28350 [2023-12-20 17:09:17,023 INFO L226 Difference]: Without dead ends: 18531 [2023-12-20 17:09:17,034 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 [2023-12-20 17:09:17,035 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 909 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2873 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 3417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 2873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:17,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 611 Invalid, 3417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 2873 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 17:09:17,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18531 states. [2023-12-20 17:09:17,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18531 to 18522. [2023-12-20 17:09:17,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18522 states, 18521 states have (on average 1.3251444306462934) internal successors, (24543), 18521 states have internal predecessors, (24543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:17,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18522 states to 18522 states and 24543 transitions. [2023-12-20 17:09:17,265 INFO L78 Accepts]: Start accepts. Automaton has 18522 states and 24543 transitions. Word has length 242 [2023-12-20 17:09:17,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:17,266 INFO L495 AbstractCegarLoop]: Abstraction has 18522 states and 24543 transitions. [2023-12-20 17:09:17,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:17,266 INFO L276 IsEmpty]: Start isEmpty. Operand 18522 states and 24543 transitions. [2023-12-20 17:09:17,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-20 17:09:17,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:17,269 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:09:17,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 17:09:17,269 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:17,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:17,270 INFO L85 PathProgramCache]: Analyzing trace with hash 512649225, now seen corresponding path program 1 times [2023-12-20 17:09:17,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:17,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923643896] [2023-12-20 17:09:17,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:17,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:17,409 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:09:17,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:17,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923643896] [2023-12-20 17:09:17,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923643896] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:17,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:17,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:09:17,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724044029] [2023-12-20 17:09:17,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:17,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:17,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:17,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:17,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:09:17,411 INFO L87 Difference]: Start difference. First operand 18522 states and 24543 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:20,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:20,570 INFO L93 Difference]: Finished difference Result 52014 states and 69798 transitions. [2023-12-20 17:09:20,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:20,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 260 [2023-12-20 17:09:20,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:20,628 INFO L225 Difference]: With dead ends: 52014 [2023-12-20 17:09:20,628 INFO L226 Difference]: Without dead ends: 34280 [2023-12-20 17:09:20,651 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 [2023-12-20 17:09:20,653 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 850 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:20,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 950 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 17:09:20,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34280 states. [2023-12-20 17:09:21,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34280 to 34270. [2023-12-20 17:09:21,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34270 states, 34269 states have (on average 1.2549242755843473) internal successors, (43005), 34269 states have internal predecessors, (43005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:21,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34270 states to 34270 states and 43005 transitions. [2023-12-20 17:09:21,176 INFO L78 Accepts]: Start accepts. Automaton has 34270 states and 43005 transitions. Word has length 260 [2023-12-20 17:09:21,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:21,176 INFO L495 AbstractCegarLoop]: Abstraction has 34270 states and 43005 transitions. [2023-12-20 17:09:21,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:21,177 INFO L276 IsEmpty]: Start isEmpty. Operand 34270 states and 43005 transitions. [2023-12-20 17:09:21,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-20 17:09:21,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:21,181 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:09:21,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 17:09:21,181 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:21,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:21,181 INFO L85 PathProgramCache]: Analyzing trace with hash 885901196, now seen corresponding path program 1 times [2023-12-20 17:09:21,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:21,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201002093] [2023-12-20 17:09:21,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:21,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:21,396 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-20 17:09:21,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:21,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201002093] [2023-12-20 17:09:21,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201002093] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:21,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:21,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:09:21,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971537073] [2023-12-20 17:09:21,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:21,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:21,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:21,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:21,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:09:21,398 INFO L87 Difference]: Start difference. First operand 34270 states and 43005 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:24,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:24,832 INFO L93 Difference]: Finished difference Result 92928 states and 117607 transitions. [2023-12-20 17:09:24,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:24,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2023-12-20 17:09:24,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:24,916 INFO L225 Difference]: With dead ends: 92928 [2023-12-20 17:09:24,916 INFO L226 Difference]: Without dead ends: 59446 [2023-12-20 17:09:24,935 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 [2023-12-20 17:09:24,938 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:24,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 984 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 17:09:24,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59446 states. [2023-12-20 17:09:25,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59446 to 56293. [2023-12-20 17:09:25,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56293 states, 56292 states have (on average 1.200508065089178) internal successors, (67579), 56292 states have internal predecessors, (67579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:25,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56293 states to 56293 states and 67579 transitions. [2023-12-20 17:09:25,731 INFO L78 Accepts]: Start accepts. Automaton has 56293 states and 67579 transitions. Word has length 291 [2023-12-20 17:09:25,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:25,732 INFO L495 AbstractCegarLoop]: Abstraction has 56293 states and 67579 transitions. [2023-12-20 17:09:25,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:25,733 INFO L276 IsEmpty]: Start isEmpty. Operand 56293 states and 67579 transitions. [2023-12-20 17:09:25,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-20 17:09:25,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:25,738 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:09:25,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 17:09:25,738 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:25,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:25,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1432596591, now seen corresponding path program 1 times [2023-12-20 17:09:25,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:25,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291755189] [2023-12-20 17:09:25,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:25,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 17:09:26,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:26,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291755189] [2023-12-20 17:09:26,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291755189] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:26,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:26,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:09:26,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324942264] [2023-12-20 17:09:26,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:26,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:26,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:26,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:26,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:09:26,058 INFO L87 Difference]: Start difference. First operand 56293 states and 67579 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:29,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:29,499 INFO L93 Difference]: Finished difference Result 133056 states and 162011 transitions. [2023-12-20 17:09:29,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:29,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 349 [2023-12-20 17:09:29,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:29,592 INFO L225 Difference]: With dead ends: 133056 [2023-12-20 17:09:29,593 INFO L226 Difference]: Without dead ends: 77551 [2023-12-20 17:09:29,622 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 [2023-12-20 17:09:29,623 INFO L413 NwaCegarLoop]: 1794 mSDtfsCounter, 808 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:29,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 1944 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 17:09:29,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77551 states. [2023-12-20 17:09:30,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77551 to 76758. [2023-12-20 17:09:30,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76758 states, 76757 states have (on average 1.1668121474262934) internal successors, (89561), 76757 states have internal predecessors, (89561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:30,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76758 states to 76758 states and 89561 transitions. [2023-12-20 17:09:30,560 INFO L78 Accepts]: Start accepts. Automaton has 76758 states and 89561 transitions. Word has length 349 [2023-12-20 17:09:30,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:30,561 INFO L495 AbstractCegarLoop]: Abstraction has 76758 states and 89561 transitions. [2023-12-20 17:09:30,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:30,561 INFO L276 IsEmpty]: Start isEmpty. Operand 76758 states and 89561 transitions. [2023-12-20 17:09:30,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-20 17:09:30,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:30,568 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:09:30,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 17:09:30,569 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:30,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:30,569 INFO L85 PathProgramCache]: Analyzing trace with hash -752030907, now seen corresponding path program 1 times [2023-12-20 17:09:30,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:30,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391145436] [2023-12-20 17:09:30,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:30,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-20 17:09:30,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:30,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391145436] [2023-12-20 17:09:30,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391145436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:30,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:30,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:09:30,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566068380] [2023-12-20 17:09:30,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:30,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:09:30,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:30,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:09:30,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:09:30,847 INFO L87 Difference]: Start difference. First operand 76758 states and 89561 transitions. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:37,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:37,238 INFO L93 Difference]: Finished difference Result 205687 states and 241920 transitions. [2023-12-20 17:09:37,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:09:37,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 358 [2023-12-20 17:09:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:37,485 INFO L225 Difference]: With dead ends: 205687 [2023-12-20 17:09:37,486 INFO L226 Difference]: Without dead ends: 129717 [2023-12-20 17:09:37,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:09:37,536 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1735 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 6654 mSolverCounterSat, 1132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 7786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1132 IncrementalHoareTripleChecker+Valid, 6654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:37,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1735 Valid, 704 Invalid, 7786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1132 Valid, 6654 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-20 17:09:37,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129717 states. [2023-12-20 17:09:38,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129717 to 128792. [2023-12-20 17:09:39,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128792 states, 128791 states have (on average 1.162340536217593) internal successors, (149699), 128791 states have internal predecessors, (149699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:39,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128792 states to 128792 states and 149699 transitions. [2023-12-20 17:09:39,206 INFO L78 Accepts]: Start accepts. Automaton has 128792 states and 149699 transitions. Word has length 358 [2023-12-20 17:09:39,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:39,206 INFO L495 AbstractCegarLoop]: Abstraction has 128792 states and 149699 transitions. [2023-12-20 17:09:39,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:39,206 INFO L276 IsEmpty]: Start isEmpty. Operand 128792 states and 149699 transitions. [2023-12-20 17:09:39,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-20 17:09:39,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:39,475 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:09:39,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 17:09:39,475 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:39,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:39,476 INFO L85 PathProgramCache]: Analyzing trace with hash 426386066, now seen corresponding path program 1 times [2023-12-20 17:09:39,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:39,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485334887] [2023-12-20 17:09:39,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:39,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-12-20 17:09:39,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:39,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485334887] [2023-12-20 17:09:39,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485334887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:39,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:39,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:09:39,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726971511] [2023-12-20 17:09:39,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:39,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:39,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:39,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:39,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:09:39,959 INFO L87 Difference]: Start difference. First operand 128792 states and 149699 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:43,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:43,383 INFO L93 Difference]: Finished difference Result 240270 states and 281023 transitions. [2023-12-20 17:09:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:43,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 358 [2023-12-20 17:09:43,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:43,689 INFO L225 Difference]: With dead ends: 240270 [2023-12-20 17:09:43,690 INFO L226 Difference]: Without dead ends: 128805 [2023-12-20 17:09:43,781 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 [2023-12-20 17:09:43,781 INFO L413 NwaCegarLoop]: 1017 mSDtfsCounter, 730 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:43,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1197 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 17:09:43,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128805 states. [2023-12-20 17:09:44,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128805 to 128005. [2023-12-20 17:09:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128005 states, 128004 states have (on average 1.1624402362426174) internal successors, (148797), 128004 states have internal predecessors, (148797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:45,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128005 states to 128005 states and 148797 transitions. [2023-12-20 17:09:45,451 INFO L78 Accepts]: Start accepts. Automaton has 128005 states and 148797 transitions. Word has length 358 [2023-12-20 17:09:45,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:45,451 INFO L495 AbstractCegarLoop]: Abstraction has 128005 states and 148797 transitions. [2023-12-20 17:09:45,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:45,452 INFO L276 IsEmpty]: Start isEmpty. Operand 128005 states and 148797 transitions. [2023-12-20 17:09:45,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2023-12-20 17:09:45,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:45,472 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:09:45,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 17:09:45,472 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:45,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:45,473 INFO L85 PathProgramCache]: Analyzing trace with hash 552052186, now seen corresponding path program 1 times [2023-12-20 17:09:45,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:45,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468561843] [2023-12-20 17:09:45,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:45,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:46,588 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 288 proven. 113 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-20 17:09:46,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:46,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468561843] [2023-12-20 17:09:46,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468561843] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:09:46,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705647165] [2023-12-20 17:09:46,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:46,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:09:46,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:09:46,591 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) [2023-12-20 17:09:46,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 17:09:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:46,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:09:46,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:09:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2023-12-20 17:09:46,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:09:46,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705647165] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:46,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:09:46,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:09:46,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852117977] [2023-12-20 17:09:46,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:46,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:46,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:46,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:46,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:09:46,984 INFO L87 Difference]: Start difference. First operand 128005 states and 148797 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:50,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:50,085 INFO L93 Difference]: Finished difference Result 254433 states and 295648 transitions. [2023-12-20 17:09:50,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:50,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 387 [2023-12-20 17:09:50,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:50,274 INFO L225 Difference]: With dead ends: 254433 [2023-12-20 17:09:50,274 INFO L226 Difference]: Without dead ends: 127216 [2023-12-20 17:09:50,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:09:50,329 INFO L413 NwaCegarLoop]: 1361 mSDtfsCounter, 1122 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:50,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 1441 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:09:50,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127216 states. [2023-12-20 17:09:51,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127216 to 127215. [2023-12-20 17:09:51,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127215 states, 127214 states have (on average 1.1196802238747308) internal successors, (142439), 127214 states have internal predecessors, (142439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:51,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127215 states to 127215 states and 142439 transitions. [2023-12-20 17:09:51,946 INFO L78 Accepts]: Start accepts. Automaton has 127215 states and 142439 transitions. Word has length 387 [2023-12-20 17:09:51,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:51,947 INFO L495 AbstractCegarLoop]: Abstraction has 127215 states and 142439 transitions. [2023-12-20 17:09:51,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:51,947 INFO L276 IsEmpty]: Start isEmpty. Operand 127215 states and 142439 transitions. [2023-12-20 17:09:51,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-12-20 17:09:51,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:51,956 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2023-12-20 17:09:51,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 17:09:52,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-20 17:09:52,161 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:52,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:52,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1028522147, now seen corresponding path program 1 times [2023-12-20 17:09:52,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:52,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043830543] [2023-12-20 17:09:52,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:52,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:52,600 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 466 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 17:09:52,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:52,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043830543] [2023-12-20 17:09:52,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043830543] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:52,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:52,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:09:52,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957125197] [2023-12-20 17:09:52,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:52,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:52,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:52,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:52,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:09:52,602 INFO L87 Difference]: Start difference. First operand 127215 states and 142439 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:56,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:56,130 INFO L93 Difference]: Finished difference Result 279628 states and 316498 transitions. [2023-12-20 17:09:56,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:56,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 455 [2023-12-20 17:09:56,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:56,538 INFO L225 Difference]: With dead ends: 279628 [2023-12-20 17:09:56,538 INFO L226 Difference]: Without dead ends: 153201 [2023-12-20 17:09:56,576 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 [2023-12-20 17:09:56,577 INFO L413 NwaCegarLoop]: 1757 mSDtfsCounter, 787 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 714 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 3249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 714 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:56,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1910 Invalid, 3249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [714 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 17:09:56,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153201 states. [2023-12-20 17:09:58,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153201 to 150819. [2023-12-20 17:09:58,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150819 states, 150818 states have (on average 1.1036481056637801) internal successors, (166450), 150818 states have internal predecessors, (166450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:58,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150819 states to 150819 states and 166450 transitions. [2023-12-20 17:09:58,337 INFO L78 Accepts]: Start accepts. Automaton has 150819 states and 166450 transitions. Word has length 455 [2023-12-20 17:09:58,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:58,338 INFO L495 AbstractCegarLoop]: Abstraction has 150819 states and 166450 transitions. [2023-12-20 17:09:58,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:09:58,338 INFO L276 IsEmpty]: Start isEmpty. Operand 150819 states and 166450 transitions. [2023-12-20 17:09:58,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2023-12-20 17:09:58,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:58,348 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:09:58,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 17:09:58,348 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:58,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:58,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1869032193, now seen corresponding path program 1 times [2023-12-20 17:09:58,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:58,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479182468] [2023-12-20 17:09:58,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:58,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:59,088 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-20 17:09:59,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:59,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479182468] [2023-12-20 17:09:59,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479182468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:59,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:59,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:09:59,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454641878] [2023-12-20 17:09:59,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:59,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:59,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:59,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:59,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:09:59,091 INFO L87 Difference]: Start difference. First operand 150819 states and 166450 transitions. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:03,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:03,690 INFO L93 Difference]: Finished difference Result 365543 states and 404233 transitions. [2023-12-20 17:10:03,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:03,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 465 [2023-12-20 17:10:03,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:03,977 INFO L225 Difference]: With dead ends: 365543 [2023-12-20 17:10:03,977 INFO L226 Difference]: Without dead ends: 215512 [2023-12-20 17:10:04,022 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 [2023-12-20 17:10:04,023 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 961 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 3085 mSolverCounterSat, 674 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 3759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 674 IncrementalHoareTripleChecker+Valid, 3085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:04,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 578 Invalid, 3759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [674 Valid, 3085 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-20 17:10:04,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215512 states. [2023-12-20 17:10:06,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215512 to 214615. [2023-12-20 17:10:06,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214615 states, 214614 states have (on average 1.1051189577567166) internal successors, (237174), 214614 states have internal predecessors, (237174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:07,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214615 states to 214615 states and 237174 transitions. [2023-12-20 17:10:07,051 INFO L78 Accepts]: Start accepts. Automaton has 214615 states and 237174 transitions. Word has length 465 [2023-12-20 17:10:07,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:07,053 INFO L495 AbstractCegarLoop]: Abstraction has 214615 states and 237174 transitions. [2023-12-20 17:10:07,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:07,053 INFO L276 IsEmpty]: Start isEmpty. Operand 214615 states and 237174 transitions. [2023-12-20 17:10:07,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2023-12-20 17:10:07,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:07,065 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:10:07,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 17:10:07,066 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:07,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:07,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1880121944, now seen corresponding path program 1 times [2023-12-20 17:10:07,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:07,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804926903] [2023-12-20 17:10:07,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:07,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 360 proven. 110 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-20 17:10:08,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:08,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804926903] [2023-12-20 17:10:08,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804926903] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:10:08,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752776092] [2023-12-20 17:10:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:08,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:10:08,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:10:08,257 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) [2023-12-20 17:10:08,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 17:10:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:08,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 17:10:08,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:10:08,637 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2023-12-20 17:10:08,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:10:08,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752776092] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:08,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:10:08,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-20 17:10:08,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575830284] [2023-12-20 17:10:08,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:08,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:08,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:08,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:08,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:10:08,641 INFO L87 Difference]: Start difference. First operand 214615 states and 237174 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:13,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:13,606 INFO L93 Difference]: Finished difference Result 463051 states and 513271 transitions. [2023-12-20 17:10:13,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:13,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 477 [2023-12-20 17:10:13,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:13,963 INFO L225 Difference]: With dead ends: 463051 [2023-12-20 17:10:13,963 INFO L226 Difference]: Without dead ends: 267335 [2023-12-20 17:10:14,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:10:14,002 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 937 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 2663 mSolverCounterSat, 759 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 3422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 759 IncrementalHoareTripleChecker+Valid, 2663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:14,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 1759 Invalid, 3422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [759 Valid, 2663 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-20 17:10:14,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267335 states. [2023-12-20 17:10:16,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267335 to 246067. [2023-12-20 17:10:16,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246067 states, 246066 states have (on average 1.0949663911308347) internal successors, (269434), 246066 states have internal predecessors, (269434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:17,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246067 states to 246067 states and 269434 transitions. [2023-12-20 17:10:17,271 INFO L78 Accepts]: Start accepts. Automaton has 246067 states and 269434 transitions. Word has length 477 [2023-12-20 17:10:17,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:17,272 INFO L495 AbstractCegarLoop]: Abstraction has 246067 states and 269434 transitions. [2023-12-20 17:10:17,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:17,272 INFO L276 IsEmpty]: Start isEmpty. Operand 246067 states and 269434 transitions. [2023-12-20 17:10:17,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2023-12-20 17:10:17,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:17,284 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 17:10:17,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 17:10:17,491 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,SelfDestructingSolverStorable13 [2023-12-20 17:10:17,491 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:17,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:17,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1525891824, now seen corresponding path program 1 times [2023-12-20 17:10:17,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:17,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429892581] [2023-12-20 17:10:17,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:17,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:17,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 623 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2023-12-20 17:10:17,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:17,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429892581] [2023-12-20 17:10:17,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429892581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:17,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:10:17,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:10:17,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413595050] [2023-12-20 17:10:17,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:17,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:17,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:17,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:17,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:10:17,916 INFO L87 Difference]: Start difference. First operand 246067 states and 269434 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:21,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:21,563 INFO L93 Difference]: Finished difference Result 490562 states and 537090 transitions. [2023-12-20 17:10:21,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:21,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 518 [2023-12-20 17:10:21,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:21,986 INFO L225 Difference]: With dead ends: 490562 [2023-12-20 17:10:21,986 INFO L226 Difference]: Without dead ends: 245283 [2023-12-20 17:10:22,466 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 [2023-12-20 17:10:22,466 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 925 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 3073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:22,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 700 Invalid, 3073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 17:10:22,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245283 states. [2023-12-20 17:10:25,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245283 to 243686. [2023-12-20 17:10:25,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243686 states, 243685 states have (on average 1.0802716621868396) internal successors, (263246), 243685 states have internal predecessors, (263246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:25,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243686 states to 243686 states and 263246 transitions. [2023-12-20 17:10:25,515 INFO L78 Accepts]: Start accepts. Automaton has 243686 states and 263246 transitions. Word has length 518 [2023-12-20 17:10:25,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:25,516 INFO L495 AbstractCegarLoop]: Abstraction has 243686 states and 263246 transitions. [2023-12-20 17:10:25,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:25,516 INFO L276 IsEmpty]: Start isEmpty. Operand 243686 states and 263246 transitions. [2023-12-20 17:10:25,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2023-12-20 17:10:25,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:25,532 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:10:25,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 17:10:25,532 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:25,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:25,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1916587185, now seen corresponding path program 1 times [2023-12-20 17:10:25,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:25,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825937578] [2023-12-20 17:10:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:25,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:27,030 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 357 proven. 113 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-20 17:10:27,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:27,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825937578] [2023-12-20 17:10:27,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825937578] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:10:27,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160143081] [2023-12-20 17:10:27,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:27,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:10:27,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:10:27,032 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:10:27,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 17:10:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:27,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:10:27,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:10:27,216 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2023-12-20 17:10:27,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:10:27,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160143081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:27,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:10:27,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:10:27,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362324126] [2023-12-20 17:10:27,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:27,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:27,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:27,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:27,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:10:27,218 INFO L87 Difference]: Start difference. First operand 243686 states and 263246 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:30,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:30,804 INFO L93 Difference]: Finished difference Result 465322 states and 503846 transitions. [2023-12-20 17:10:30,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:30,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 533 [2023-12-20 17:10:30,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:31,139 INFO L225 Difference]: With dead ends: 465322 [2023-12-20 17:10:31,140 INFO L226 Difference]: Without dead ends: 243681 [2023-12-20 17:10:31,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:10:31,543 INFO L413 NwaCegarLoop]: 1707 mSDtfsCounter, 915 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 2672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:31,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1832 Invalid, 2672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:10:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243681 states. [2023-12-20 17:10:34,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243681 to 243678. [2023-12-20 17:10:34,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243678 states, 243677 states have (on average 1.080237363394986) internal successors, (263229), 243677 states have internal predecessors, (263229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:34,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243678 states to 243678 states and 263229 transitions. [2023-12-20 17:10:34,686 INFO L78 Accepts]: Start accepts. Automaton has 243678 states and 263229 transitions. Word has length 533 [2023-12-20 17:10:34,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:34,687 INFO L495 AbstractCegarLoop]: Abstraction has 243678 states and 263229 transitions. [2023-12-20 17:10:34,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:34,687 INFO L276 IsEmpty]: Start isEmpty. Operand 243678 states and 263229 transitions. [2023-12-20 17:10:34,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2023-12-20 17:10:34,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:34,700 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:10:34,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 17:10:34,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:10:34,906 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:34,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:34,906 INFO L85 PathProgramCache]: Analyzing trace with hash 965179590, now seen corresponding path program 1 times [2023-12-20 17:10:34,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:34,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006495451] [2023-12-20 17:10:34,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:34,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 17:10:35,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:35,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006495451] [2023-12-20 17:10:35,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006495451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:35,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:10:35,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:10:35,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359506583] [2023-12-20 17:10:35,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:35,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:35,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:35,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:35,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:10:35,344 INFO L87 Difference]: Start difference. First operand 243678 states and 263229 transitions. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:39,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:39,066 INFO L93 Difference]: Finished difference Result 487325 states and 526322 transitions. [2023-12-20 17:10:39,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:39,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 552 [2023-12-20 17:10:39,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:39,448 INFO L225 Difference]: With dead ends: 487325 [2023-12-20 17:10:39,448 INFO L226 Difference]: Without dead ends: 243648 [2023-12-20 17:10:39,566 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 [2023-12-20 17:10:39,568 INFO L413 NwaCegarLoop]: 1461 mSDtfsCounter, 932 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:39,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 1586 Invalid, 2923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 17:10:39,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243648 states. [2023-12-20 17:10:42,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243648 to 235765. [2023-12-20 17:10:42,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235765 states, 235764 states have (on average 1.0570146417604045) internal successors, (249206), 235764 states have internal predecessors, (249206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:43,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235765 states to 235765 states and 249206 transitions. [2023-12-20 17:10:43,239 INFO L78 Accepts]: Start accepts. Automaton has 235765 states and 249206 transitions. Word has length 552 [2023-12-20 17:10:43,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:43,239 INFO L495 AbstractCegarLoop]: Abstraction has 235765 states and 249206 transitions. [2023-12-20 17:10:43,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:43,240 INFO L276 IsEmpty]: Start isEmpty. Operand 235765 states and 249206 transitions. [2023-12-20 17:10:43,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2023-12-20 17:10:43,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:43,256 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 17:10:43,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 17:10:43,257 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:43,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:43,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1660457963, now seen corresponding path program 1 times [2023-12-20 17:10:43,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:43,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347204143] [2023-12-20 17:10:43,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:43,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:43,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 623 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2023-12-20 17:10:43,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:43,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347204143] [2023-12-20 17:10:43,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347204143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:43,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:10:43,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:10:43,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964033714] [2023-12-20 17:10:43,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:43,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:43,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:43,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:43,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:10:43,945 INFO L87 Difference]: Start difference. First operand 235765 states and 249206 transitions. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:48,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:48,237 INFO L93 Difference]: Finished difference Result 472326 states and 499215 transitions. [2023-12-20 17:10:48,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:48,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 561 [2023-12-20 17:10:48,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:48,594 INFO L225 Difference]: With dead ends: 472326 [2023-12-20 17:10:48,594 INFO L226 Difference]: Without dead ends: 237349 [2023-12-20 17:10:48,702 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 [2023-12-20 17:10:48,703 INFO L413 NwaCegarLoop]: 1375 mSDtfsCounter, 858 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2474 mSolverCounterSat, 576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 3050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 576 IncrementalHoareTripleChecker+Valid, 2474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:48,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 1456 Invalid, 3050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [576 Valid, 2474 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 17:10:48,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237349 states. [2023-12-20 17:10:51,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237349 to 234189. [2023-12-20 17:10:51,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234189 states, 234188 states have (on average 1.04742770765368) internal successors, (245295), 234188 states have internal predecessors, (245295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:51,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234189 states to 234189 states and 245295 transitions. [2023-12-20 17:10:51,982 INFO L78 Accepts]: Start accepts. Automaton has 234189 states and 245295 transitions. Word has length 561 [2023-12-20 17:10:51,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:51,983 INFO L495 AbstractCegarLoop]: Abstraction has 234189 states and 245295 transitions. [2023-12-20 17:10:51,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:51,983 INFO L276 IsEmpty]: Start isEmpty. Operand 234189 states and 245295 transitions. [2023-12-20 17:10:52,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2023-12-20 17:10:52,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:52,013 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:10:52,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 17:10:52,013 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:52,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:52,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1325514422, now seen corresponding path program 1 times [2023-12-20 17:10:52,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:52,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553731699] [2023-12-20 17:10:52,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:52,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 387 proven. 110 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-20 17:10:52,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:52,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553731699] [2023-12-20 17:10:52,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553731699] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:10:52,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779172180] [2023-12-20 17:10:52,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:52,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:10:52,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:10:52,915 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:10:52,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 17:10:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:53,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 17:10:53,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:10:53,555 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-20 17:10:53,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:10:53,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779172180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:53,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:10:53,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-20 17:10:53,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128823123] [2023-12-20 17:10:53,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:53,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:53,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:53,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:53,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:10:53,558 INFO L87 Difference]: Start difference. First operand 234189 states and 245295 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 2 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) [2023-12-20 17:10:56,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:56,074 INFO L93 Difference]: Finished difference Result 445530 states and 467212 transitions. [2023-12-20 17:10:56,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:56,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 2 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) Word has length 580 [2023-12-20 17:10:56,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:56,557 INFO L225 Difference]: With dead ends: 445530 [2023-12-20 17:10:56,557 INFO L226 Difference]: Without dead ends: 232597 [2023-12-20 17:10:56,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 579 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:10:56,779 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 1524 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:56,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 280 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:10:56,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232597 states. [2023-12-20 17:10:59,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232597 to 232596. [2023-12-20 17:10:59,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232596 states, 232595 states have (on average 1.0470732388916357) internal successors, (243544), 232595 states have internal predecessors, (243544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:10:59,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232596 states to 232596 states and 243544 transitions. [2023-12-20 17:10:59,660 INFO L78 Accepts]: Start accepts. Automaton has 232596 states and 243544 transitions. Word has length 580 [2023-12-20 17:10:59,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:59,660 INFO L495 AbstractCegarLoop]: Abstraction has 232596 states and 243544 transitions. [2023-12-20 17:10:59,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 2 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) [2023-12-20 17:10:59,660 INFO L276 IsEmpty]: Start isEmpty. Operand 232596 states and 243544 transitions. [2023-12-20 17:10:59,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2023-12-20 17:10:59,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:59,676 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:10:59,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 17:10:59,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:10:59,883 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:59,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:59,883 INFO L85 PathProgramCache]: Analyzing trace with hash 892996841, now seen corresponding path program 1 times [2023-12-20 17:10:59,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:59,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315030] [2023-12-20 17:10:59,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:59,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:11:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:11:01,490 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 571 proven. 110 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-20 17:11:01,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:11:01,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315030] [2023-12-20 17:11:01,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315030] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:11:01,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488387391] [2023-12-20 17:11:01,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:11:01,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:11:01,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:11:01,493 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:11:01,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 17:11:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:11:01,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 17:11:01,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:11:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 557 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-12-20 17:11:02,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:11:02,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488387391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:11:02,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:11:02,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-20 17:11:02,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372185261] [2023-12-20 17:11:02,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:11:02,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:11:02,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:11:02,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:11:02,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:11:02,331 INFO L87 Difference]: Start difference. First operand 232596 states and 243544 transitions. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 2 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:11:05,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:11:05,755 INFO L93 Difference]: Finished difference Result 458117 states and 480432 transitions. [2023-12-20 17:11:05,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:11:05,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 2 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 623 [2023-12-20 17:11:05,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:11:06,095 INFO L225 Difference]: With dead ends: 458117 [2023-12-20 17:11:06,096 INFO L226 Difference]: Without dead ends: 245198 [2023-12-20 17:11:06,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 622 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:11:06,210 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 617 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 2582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:11:06,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 1131 Invalid, 2582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:11:06,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245198 states. [2023-12-20 17:11:08,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245198 to 242038. [2023-12-20 17:11:08,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242038 states, 242037 states have (on average 1.0430388742217098) internal successors, (252454), 242037 states have internal predecessors, (252454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:11:09,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242038 states to 242038 states and 252454 transitions. [2023-12-20 17:11:09,892 INFO L78 Accepts]: Start accepts. Automaton has 242038 states and 252454 transitions. Word has length 623 [2023-12-20 17:11:09,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:11:09,892 INFO L495 AbstractCegarLoop]: Abstraction has 242038 states and 252454 transitions. [2023-12-20 17:11:09,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 2 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:11:09,892 INFO L276 IsEmpty]: Start isEmpty. Operand 242038 states and 252454 transitions. [2023-12-20 17:11:09,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2023-12-20 17:11:09,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:11:09,908 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:11:09,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 17:11:10,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:11:10,115 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:11:10,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:11:10,116 INFO L85 PathProgramCache]: Analyzing trace with hash 506036429, now seen corresponding path program 1 times [2023-12-20 17:11:10,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:11:10,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771110967] [2023-12-20 17:11:10,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:11:10,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:11:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:11:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1232 backedges. 900 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2023-12-20 17:11:11,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:11:11,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771110967] [2023-12-20 17:11:11,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771110967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:11:11,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:11:11,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:11:11,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372988038] [2023-12-20 17:11:11,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:11:11,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:11:11,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:11:11,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:11:11,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:11:11,264 INFO L87 Difference]: Start difference. First operand 242038 states and 252454 transitions. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:11:15,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:11:15,319 INFO L93 Difference]: Finished difference Result 508495 states and 530995 transitions. [2023-12-20 17:11:15,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:11:15,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 649 [2023-12-20 17:11:15,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:11:15,710 INFO L225 Difference]: With dead ends: 508495 [2023-12-20 17:11:15,710 INFO L226 Difference]: Without dead ends: 267245 [2023-12-20 17:11:16,139 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 [2023-12-20 17:11:16,140 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 736 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 2722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:11:16,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1003 Invalid, 2722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 17:11:16,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267245 states. [2023-12-20 17:11:18,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267245 to 256988. [2023-12-20 17:11:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256988 states, 256987 states have (on average 1.042239490713538) internal successors, (267842), 256987 states have internal predecessors, (267842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:11:19,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256988 states to 256988 states and 267842 transitions. [2023-12-20 17:11:19,351 INFO L78 Accepts]: Start accepts. Automaton has 256988 states and 267842 transitions. Word has length 649 [2023-12-20 17:11:19,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:11:19,351 INFO L495 AbstractCegarLoop]: Abstraction has 256988 states and 267842 transitions. [2023-12-20 17:11:19,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:11:19,352 INFO L276 IsEmpty]: Start isEmpty. Operand 256988 states and 267842 transitions. [2023-12-20 17:11:19,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2023-12-20 17:11:19,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:11:19,365 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2023-12-20 17:11:19,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 17:11:19,365 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:11:19,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:11:19,365 INFO L85 PathProgramCache]: Analyzing trace with hash 554269683, now seen corresponding path program 1 times [2023-12-20 17:11:19,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:11:19,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548568384] [2023-12-20 17:11:19,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:11:19,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:11:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:11:20,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1527 backedges. 771 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2023-12-20 17:11:20,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:11:20,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548568384] [2023-12-20 17:11:20,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548568384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:11:20,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:11:20,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:11:20,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875382589] [2023-12-20 17:11:20,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:11:20,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:11:20,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:11:20,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:11:20,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:11:20,201 INFO L87 Difference]: Start difference. First operand 256988 states and 267842 transitions. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:11:24,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:11:24,773 INFO L93 Difference]: Finished difference Result 560442 states and 585739 transitions. [2023-12-20 17:11:24,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:11:24,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 651 [2023-12-20 17:11:24,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:11:25,402 INFO L225 Difference]: With dead ends: 560442 [2023-12-20 17:11:25,402 INFO L226 Difference]: Without dead ends: 323921 [2023-12-20 17:11:25,529 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 [2023-12-20 17:11:25,530 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 891 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 876 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:11:25,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 578 Invalid, 3258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [876 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 17:11:25,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323921 states. [2023-12-20 17:11:28,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323921 to 315253. [2023-12-20 17:11:28,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315253 states, 315252 states have (on average 1.0405897504218846) internal successors, (328048), 315252 states have internal predecessors, (328048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:11:29,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315253 states to 315253 states and 328048 transitions. [2023-12-20 17:11:29,555 INFO L78 Accepts]: Start accepts. Automaton has 315253 states and 328048 transitions. Word has length 651 [2023-12-20 17:11:29,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:11:29,555 INFO L495 AbstractCegarLoop]: Abstraction has 315253 states and 328048 transitions. [2023-12-20 17:11:29,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:11:29,555 INFO L276 IsEmpty]: Start isEmpty. Operand 315253 states and 328048 transitions. [2023-12-20 17:11:29,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2023-12-20 17:11:29,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:11:29,573 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:11:29,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 17:11:29,573 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:11:29,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:11:29,573 INFO L85 PathProgramCache]: Analyzing trace with hash 527389587, now seen corresponding path program 1 times [2023-12-20 17:11:29,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:11:29,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061026043] [2023-12-20 17:11:29,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:11:29,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:11:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:11:30,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 427 proven. 638 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 17:11:30,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:11:30,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061026043] [2023-12-20 17:11:30,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061026043] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:11:30,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320153109] [2023-12-20 17:11:30,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:11:30,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:11:30,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:11:30,474 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:11:30,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 17:11:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:11:30,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:11:30,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:11:30,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 759 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2023-12-20 17:11:30,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:11:30,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320153109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:11:30,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:11:30,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-20 17:11:30,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327395277] [2023-12-20 17:11:30,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:11:30,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:11:30,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:11:30,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:11:30,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:11:30,975 INFO L87 Difference]: Start difference. First operand 315253 states and 328048 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:11:37,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:11:37,057 INFO L93 Difference]: Finished difference Result 677874 states and 705426 transitions. [2023-12-20 17:11:37,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:11:37,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 691 [2023-12-20 17:11:37,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:11:37,905 INFO L225 Difference]: With dead ends: 677874 [2023-12-20 17:11:37,906 INFO L226 Difference]: Without dead ends: 363409 [2023-12-20 17:11:38,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 689 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:11:38,025 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 1666 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 5446 mSolverCounterSat, 708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 6154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 708 IncrementalHoareTripleChecker+Valid, 5446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:11:38,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1666 Valid, 712 Invalid, 6154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [708 Valid, 5446 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-20 17:11:38,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363409 states. [2023-12-20 17:11:42,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363409 to 353842. [2023-12-20 17:11:42,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353842 states, 353841 states have (on average 1.040809290048355) internal successors, (368281), 353841 states have internal predecessors, (368281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:11:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353842 states to 353842 states and 368281 transitions. [2023-12-20 17:11:43,237 INFO L78 Accepts]: Start accepts. Automaton has 353842 states and 368281 transitions. Word has length 691 [2023-12-20 17:11:43,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:11:43,237 INFO L495 AbstractCegarLoop]: Abstraction has 353842 states and 368281 transitions. [2023-12-20 17:11:43,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:11:43,237 INFO L276 IsEmpty]: Start isEmpty. Operand 353842 states and 368281 transitions. [2023-12-20 17:11:43,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 846 [2023-12-20 17:11:43,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:11:43,258 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:11:43,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 17:11:43,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:11:43,464 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:11:43,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:11:43,465 INFO L85 PathProgramCache]: Analyzing trace with hash -655071516, now seen corresponding path program 1 times [2023-12-20 17:11:43,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:11:43,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562210475] [2023-12-20 17:11:43,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:11:43,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:11:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:11:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 582 proven. 228 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-12-20 17:11:44,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:11:44,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562210475] [2023-12-20 17:11:44,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562210475] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:11:44,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776360423] [2023-12-20 17:11:44,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:11:44,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:11:44,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:11:44,233 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:11:44,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 17:11:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:11:44,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:11:44,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:11:45,034 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 582 proven. 228 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-12-20 17:11:45,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:11:45,704 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 582 proven. 228 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-12-20 17:11:45,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776360423] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 17:11:45,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 17:11:45,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-12-20 17:11:45,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343580201] [2023-12-20 17:11:45,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 17:11:45,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 17:11:45,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:11:45,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 17:11:45,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:11:45,707 INFO L87 Difference]: Start difference. First operand 353842 states and 368281 transitions. Second operand has 6 states, 6 states have (on average 199.5) internal successors, (1197), 5 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:11:55,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:11:55,057 INFO L93 Difference]: Finished difference Result 745488 states and 776788 transitions. [2023-12-20 17:11:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 17:11:55,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 199.5) internal successors, (1197), 5 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 845 [2023-12-20 17:11:55,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:11:55,910 INFO L225 Difference]: With dead ends: 745488 [2023-12-20 17:11:55,911 INFO L226 Difference]: Without dead ends: 405017 [2023-12-20 17:11:56,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1691 GetRequests, 1687 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:11:56,342 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 3166 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 7637 mSolverCounterSat, 2232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3166 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 9869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2232 IncrementalHoareTripleChecker+Valid, 7637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:11:56,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3166 Valid, 737 Invalid, 9869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2232 Valid, 7637 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-20 17:11:56,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405017 states. [2023-12-20 17:12:00,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405017 to 293165. [2023-12-20 17:12:00,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293165 states, 293164 states have (on average 1.0338479485885033) internal successors, (303087), 293164 states have internal predecessors, (303087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:12:01,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293165 states to 293165 states and 303087 transitions. [2023-12-20 17:12:01,038 INFO L78 Accepts]: Start accepts. Automaton has 293165 states and 303087 transitions. Word has length 845 [2023-12-20 17:12:01,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:12:01,038 INFO L495 AbstractCegarLoop]: Abstraction has 293165 states and 303087 transitions. [2023-12-20 17:12:01,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 199.5) internal successors, (1197), 5 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:12:01,039 INFO L276 IsEmpty]: Start isEmpty. Operand 293165 states and 303087 transitions. [2023-12-20 17:12:01,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 976 [2023-12-20 17:12:01,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:12:01,074 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:12:01,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 17:12:01,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:12:01,283 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:12:01,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:12:01,284 INFO L85 PathProgramCache]: Analyzing trace with hash 796022875, now seen corresponding path program 1 times [2023-12-20 17:12:01,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:12:01,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512186929] [2023-12-20 17:12:01,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:12:01,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:12:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:12:02,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1494 backedges. 427 proven. 749 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-12-20 17:12:02,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:12:02,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512186929] [2023-12-20 17:12:02,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512186929] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:12:02,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843278564] [2023-12-20 17:12:02,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:12:02,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:12:02,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:12:02,486 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:12:02,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 17:12:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:12:02,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 17:12:02,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:12:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1494 backedges. 427 proven. 749 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-12-20 17:12:03,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:12:04,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1494 backedges. 832 proven. 344 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-12-20 17:12:04,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843278564] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 17:12:04,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 17:12:04,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-12-20 17:12:04,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942678418] [2023-12-20 17:12:04,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 17:12:04,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 17:12:04,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:12:04,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 17:12:04,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:12:04,466 INFO L87 Difference]: Start difference. First operand 293165 states and 303087 transitions. Second operand has 8 states, 8 states have (on average 179.125) internal successors, (1433), 7 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:12:15,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:12:15,698 INFO L93 Difference]: Finished difference Result 691254 states and 716277 transitions. [2023-12-20 17:12:15,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 17:12:15,699 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 179.125) internal successors, (1433), 7 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 975 [2023-12-20 17:12:15,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:12:16,309 INFO L225 Difference]: With dead ends: 691254 [2023-12-20 17:12:16,309 INFO L226 Difference]: Without dead ends: 418558 [2023-12-20 17:12:16,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1952 GetRequests, 1946 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:12:16,435 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 5087 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 9726 mSolverCounterSat, 1998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5087 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 11724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1998 IncrementalHoareTripleChecker+Valid, 9726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:12:16,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5087 Valid, 728 Invalid, 11724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1998 Valid, 9726 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-12-20 17:12:16,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418558 states. [2023-12-20 17:12:20,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418558 to 386928. [2023-12-20 17:12:21,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386928 states, 386927 states have (on average 1.0358930754380025) internal successors, (400815), 386927 states have internal predecessors, (400815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:12:22,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386928 states to 386928 states and 400815 transitions. [2023-12-20 17:12:22,191 INFO L78 Accepts]: Start accepts. Automaton has 386928 states and 400815 transitions. Word has length 975 [2023-12-20 17:12:22,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:12:22,191 INFO L495 AbstractCegarLoop]: Abstraction has 386928 states and 400815 transitions. [2023-12-20 17:12:22,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 179.125) internal successors, (1433), 7 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:12:22,192 INFO L276 IsEmpty]: Start isEmpty. Operand 386928 states and 400815 transitions. [2023-12-20 17:12:22,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1108 [2023-12-20 17:12:22,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:12:22,241 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:12:22,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 17:12:22,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-20 17:12:22,448 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:12:22,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:12:22,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1730726916, now seen corresponding path program 1 times [2023-12-20 17:12:22,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:12:22,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545664587] [2023-12-20 17:12:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:12:22,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:12:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:12:23,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1459 backedges. 1159 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-12-20 17:12:23,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:12:23,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545664587] [2023-12-20 17:12:23,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545664587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:12:23,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:12:23,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:12:23,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129677589] [2023-12-20 17:12:23,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:12:23,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:12:23,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:12:23,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:12:23,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:12:23,315 INFO L87 Difference]: Start difference. First operand 386928 states and 400815 transitions. Second operand has 3 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:12:27,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:12:27,448 INFO L93 Difference]: Finished difference Result 751835 states and 779236 transitions. [2023-12-20 17:12:27,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:12:27,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1107 [2023-12-20 17:12:27,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:12:28,212 INFO L225 Difference]: With dead ends: 751835 [2023-12-20 17:12:28,212 INFO L226 Difference]: Without dead ends: 386942 [2023-12-20 17:12:28,404 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 [2023-12-20 17:12:28,404 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 772 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 2534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:12:28,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1705 Invalid, 2534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 17:12:28,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386942 states.