/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:49:43,396 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:49:43,472 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:49:43,475 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:49:43,475 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:49:43,498 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:49:43,498 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:49:43,498 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:49:43,499 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:49:43,499 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:49:43,499 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:49:43,500 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:49:43,500 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:49:43,500 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:49:43,500 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:49:43,501 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:49:43,501 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:49:43,501 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:49:43,501 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:49:43,502 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:49:43,502 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:49:43,505 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:49:43,505 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:49:43,505 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:49:43,508 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:49:43,508 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:49:43,508 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:49:43,509 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:49:43,509 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:49:43,509 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:49:43,510 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:49:43,510 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:49:43,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:49:43,510 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:49:43,510 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:49:43,511 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:49:43,511 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:49:43,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:49:43,511 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:49:43,511 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:49:43,511 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:49:43,511 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:49:43,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:49:43,512 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:49:43,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:49:43,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:49:43,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:49:43,726 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:49:43,727 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:49:43,728 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label19.c [2023-12-15 18:49:44,767 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:49:45,087 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:49:45,088 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label19.c [2023-12-15 18:49:45,112 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ff385892/1386743d8cf943c3a6133d3f54c2b303/FLAG7bfb3327c [2023-12-15 18:49:45,124 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ff385892/1386743d8cf943c3a6133d3f54c2b303 [2023-12-15 18:49:45,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:49:45,127 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:49:45,129 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:49:45,129 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:49:45,133 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:49:45,133 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:49:45" (1/1) ... [2023-12-15 18:49:45,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51013eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:45, skipping insertion in model container [2023-12-15 18:49:45,134 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:49:45" (1/1) ... [2023-12-15 18:49:45,233 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:49:45,395 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/Problem12_label19.c[2130,2143] [2023-12-15 18:49:45,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:49:45,928 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:49:45,943 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/Problem12_label19.c[2130,2143] [2023-12-15 18:49:46,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:49:46,268 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:49:46,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:46 WrapperNode [2023-12-15 18:49:46,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:49:46,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:49:46,270 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:49:46,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:49:46,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:46" (1/1) ... [2023-12-15 18:49:46,327 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:46" (1/1) ... [2023-12-15 18:49:46,580 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2023-12-15 18:49:46,581 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:49:46,581 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:49:46,582 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:49:46,582 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:49:46,589 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:46" (1/1) ... [2023-12-15 18:49:46,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:46" (1/1) ... [2023-12-15 18:49:46,635 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:46" (1/1) ... [2023-12-15 18:49:46,753 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:49:46,753 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:46" (1/1) ... [2023-12-15 18:49:46,753 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:46" (1/1) ... [2023-12-15 18:49:46,901 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:46" (1/1) ... [2023-12-15 18:49:46,924 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:46" (1/1) ... [2023-12-15 18:49:46,944 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:46" (1/1) ... [2023-12-15 18:49:46,957 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:46" (1/1) ... [2023-12-15 18:49:47,011 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:49:47,012 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:49:47,013 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:49:47,013 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:49:47,014 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:46" (1/1) ... [2023-12-15 18:49:47,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:49:47,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:49:47,045 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:49:47,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:49:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:49:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:49:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:49:47,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:49:47,114 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:49:47,116 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:49:49,975 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:49:50,014 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:49:50,015 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 18:49:50,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:49:50 BoogieIcfgContainer [2023-12-15 18:49:50,015 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:49:50,017 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:49:50,017 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:49:50,019 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:49:50,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:49:45" (1/3) ... [2023-12-15 18:49:50,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4465f622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:49:50, skipping insertion in model container [2023-12-15 18:49:50,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:49:46" (2/3) ... [2023-12-15 18:49:50,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4465f622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:49:50, skipping insertion in model container [2023-12-15 18:49:50,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:49:50" (3/3) ... [2023-12-15 18:49:50,021 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label19.c [2023-12-15 18:49:50,033 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:49:50,034 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:49:50,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:49:50,082 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;@265986b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:49:50,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:49:50,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:50,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-15 18:49:50,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:50,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:50,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:50,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:50,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1031439777, now seen corresponding path program 1 times [2023-12-15 18:49:50,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:50,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319880825] [2023-12-15 18:49:50,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:50,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:49:50,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:50,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319880825] [2023-12-15 18:49:50,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319880825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:50,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:50,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:49:50,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137188884] [2023-12-15 18:49:50,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:50,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 18:49:50,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:50,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 18:49:50,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:49:50,223 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:50,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:50,290 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2023-12-15 18:49:50,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 18:49:50,292 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-15 18:49:50,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:50,303 INFO L225 Difference]: With dead ends: 1511 [2023-12-15 18:49:50,303 INFO L226 Difference]: Without dead ends: 754 [2023-12-15 18:49:50,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:49:50,309 INFO L413 NwaCegarLoop]: 1438 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, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:50,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:49:50,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-12-15 18:49:50,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-12-15 18:49:50,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:50,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2023-12-15 18:49:50,358 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 13 [2023-12-15 18:49:50,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:50,358 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2023-12-15 18:49:50,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:50,358 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2023-12-15 18:49:50,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-15 18:49:50,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:50,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:50,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:49:50,359 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:50,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1086407081, now seen corresponding path program 1 times [2023-12-15 18:49:50,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:50,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270953230] [2023-12-15 18:49:50,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:50,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:50,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:49:50,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:50,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270953230] [2023-12-15 18:49:50,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270953230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:50,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:50,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:49:50,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449779079] [2023-12-15 18:49:50,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:50,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:50,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:50,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:50,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:50,414 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:53,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:53,397 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2023-12-15 18:49:53,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:53,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-15 18:49:53,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:53,403 INFO L225 Difference]: With dead ends: 2258 [2023-12-15 18:49:53,404 INFO L226 Difference]: Without dead ends: 1505 [2023-12-15 18:49:53,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:53,411 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 801 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:53,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 75 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2278 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 18:49:53,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2023-12-15 18:49:53,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2023-12-15 18:49:53,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.8703457446808511) internal successors, (2813), 1504 states have internal predecessors, (2813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:53,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2813 transitions. [2023-12-15 18:49:53,489 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2813 transitions. Word has length 13 [2023-12-15 18:49:53,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:53,490 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 2813 transitions. [2023-12-15 18:49:53,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:53,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2813 transitions. [2023-12-15 18:49:53,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 18:49:53,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:53,492 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 18:49:53,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:49:53,492 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:53,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:53,493 INFO L85 PathProgramCache]: Analyzing trace with hash 468360501, now seen corresponding path program 1 times [2023-12-15 18:49:53,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:53,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108570737] [2023-12-15 18:49:53,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:53,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:49:53,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:53,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108570737] [2023-12-15 18:49:53,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108570737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:53,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:53,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:49:53,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096356401] [2023-12-15 18:49:53,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:53,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:53,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:53,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:53,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:53,860 INFO L87 Difference]: Start difference. First operand 1505 states and 2813 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:56,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:56,486 INFO L93 Difference]: Finished difference Result 4513 states and 8437 transitions. [2023-12-15 18:49:56,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:56,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-15 18:49:56,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:56,495 INFO L225 Difference]: With dead ends: 4513 [2023-12-15 18:49:56,496 INFO L226 Difference]: Without dead ends: 3009 [2023-12-15 18:49:56,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:56,498 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 918 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:56,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 352 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 18:49:56,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2023-12-15 18:49:56,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 3007. [2023-12-15 18:49:56,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3006 states have (on average 1.6533599467731204) internal successors, (4970), 3006 states have internal predecessors, (4970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4970 transitions. [2023-12-15 18:49:56,545 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4970 transitions. Word has length 86 [2023-12-15 18:49:56,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:56,547 INFO L495 AbstractCegarLoop]: Abstraction has 3007 states and 4970 transitions. [2023-12-15 18:49:56,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:56,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4970 transitions. [2023-12-15 18:49:56,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-15 18:49:56,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:56,549 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 18:49:56,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:49:56,550 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:56,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:56,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1338757234, now seen corresponding path program 1 times [2023-12-15 18:49:56,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:56,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275033912] [2023-12-15 18:49:56,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:56,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:49:56,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:56,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275033912] [2023-12-15 18:49:56,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275033912] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:56,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:56,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:56,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278946358] [2023-12-15 18:49:56,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:56,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:49:56,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:56,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:49:56,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:49:56,763 INFO L87 Difference]: Start difference. First operand 3007 states and 4970 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:01,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:50:01,000 INFO L93 Difference]: Finished difference Result 8266 states and 13428 transitions. [2023-12-15 18:50:01,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:50:01,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-15 18:50:01,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:50:01,014 INFO L225 Difference]: With dead ends: 8266 [2023-12-15 18:50:01,014 INFO L226 Difference]: Without dead ends: 5260 [2023-12-15 18:50:01,021 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 [2023-12-15 18:50:01,027 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 2153 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4999 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2153 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 5850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 4999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:50:01,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2153 Valid, 351 Invalid, 5850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 4999 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-15 18:50:01,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5260 states. [2023-12-15 18:50:01,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5260 to 5260. [2023-12-15 18:50:01,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 5259 states have (on average 1.510363186917665) internal successors, (7943), 5259 states have internal predecessors, (7943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:01,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 7943 transitions. [2023-12-15 18:50:01,096 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 7943 transitions. Word has length 99 [2023-12-15 18:50:01,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:50:01,096 INFO L495 AbstractCegarLoop]: Abstraction has 5260 states and 7943 transitions. [2023-12-15 18:50:01,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:01,097 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 7943 transitions. [2023-12-15 18:50:01,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-15 18:50:01,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:50:01,104 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 18:50:01,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:50:01,105 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:50:01,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:50:01,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1013448331, now seen corresponding path program 1 times [2023-12-15 18:50:01,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:50:01,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15883679] [2023-12-15 18:50:01,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:01,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:50:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:01,426 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 18:50:01,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:50:01,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15883679] [2023-12-15 18:50:01,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15883679] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:50:01,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292133613] [2023-12-15 18:50:01,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:01,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:50:01,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:50:01,429 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:50:01,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:50:01,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:01,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:50:01,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:50:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:50:01,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:50:01,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292133613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:50:01,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:50:01,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-15 18:50:01,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086311168] [2023-12-15 18:50:01,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:50:01,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:50:01,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:50:01,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:50:01,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:50:01,746 INFO L87 Difference]: Start difference. First operand 5260 states and 7943 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:04,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:50:04,149 INFO L93 Difference]: Finished difference Result 14274 states and 22312 transitions. [2023-12-15 18:50:04,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:50:04,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-15 18:50:04,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:50:04,183 INFO L225 Difference]: With dead ends: 14274 [2023-12-15 18:50:04,183 INFO L226 Difference]: Without dead ends: 9766 [2023-12-15 18:50:04,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:50:04,190 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 621 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 3042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:50:04,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 664 Invalid, 3042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 18:50:04,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9766 states. [2023-12-15 18:50:04,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9766 to 9766. [2023-12-15 18:50:04,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.387916026625704) internal successors, (13553), 9765 states have internal predecessors, (13553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 13553 transitions. [2023-12-15 18:50:04,305 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 13553 transitions. Word has length 154 [2023-12-15 18:50:04,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:50:04,306 INFO L495 AbstractCegarLoop]: Abstraction has 9766 states and 13553 transitions. [2023-12-15 18:50:04,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:04,306 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 13553 transitions. [2023-12-15 18:50:04,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-15 18:50:04,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:50:04,307 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:50:04,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:50:04,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:50:04,513 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:50:04,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:50:04,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1826438495, now seen corresponding path program 1 times [2023-12-15 18:50:04,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:50:04,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284133975] [2023-12-15 18:50:04,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:04,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:50:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:50:04,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:50:04,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284133975] [2023-12-15 18:50:04,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284133975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:50:04,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:50:04,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:50:04,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542383444] [2023-12-15 18:50:04,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:50:04,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:50:04,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:50:04,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:50:04,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:50:04,782 INFO L87 Difference]: Start difference. First operand 9766 states and 13553 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:07,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:50:07,975 INFO L93 Difference]: Finished difference Result 23323 states and 32176 transitions. [2023-12-15 18:50:07,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:50:07,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2023-12-15 18:50:07,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:50:08,026 INFO L225 Difference]: With dead ends: 23323 [2023-12-15 18:50:08,026 INFO L226 Difference]: Without dead ends: 14272 [2023-12-15 18:50:08,045 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 [2023-12-15 18:50:08,045 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 688 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3805 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 4133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 3805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:50:08,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 709 Invalid, 4133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 3805 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-15 18:50:08,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14272 states. [2023-12-15 18:50:08,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14272 to 14272. [2023-12-15 18:50:08,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14272 states, 14271 states have (on average 1.2779763156050732) internal successors, (18238), 14271 states have internal predecessors, (18238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:08,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14272 states to 14272 states and 18238 transitions. [2023-12-15 18:50:08,265 INFO L78 Accepts]: Start accepts. Automaton has 14272 states and 18238 transitions. Word has length 170 [2023-12-15 18:50:08,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:50:08,265 INFO L495 AbstractCegarLoop]: Abstraction has 14272 states and 18238 transitions. [2023-12-15 18:50:08,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:08,266 INFO L276 IsEmpty]: Start isEmpty. Operand 14272 states and 18238 transitions. [2023-12-15 18:50:08,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-15 18:50:08,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:50:08,267 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:50:08,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:50:08,268 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:50:08,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:50:08,268 INFO L85 PathProgramCache]: Analyzing trace with hash -800617370, now seen corresponding path program 1 times [2023-12-15 18:50:08,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:50:08,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732797035] [2023-12-15 18:50:08,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:08,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:50:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-15 18:50:08,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:50:08,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732797035] [2023-12-15 18:50:08,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732797035] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:50:08,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:50:08,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:50:08,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813352958] [2023-12-15 18:50:08,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:50:08,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:50:08,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:50:08,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:50:08,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:08,489 INFO L87 Difference]: Start difference. First operand 14272 states and 18238 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:11,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:50:11,005 INFO L93 Difference]: Finished difference Result 34551 states and 45265 transitions. [2023-12-15 18:50:11,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:50:11,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2023-12-15 18:50:11,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:50:11,037 INFO L225 Difference]: With dead ends: 34551 [2023-12-15 18:50:11,037 INFO L226 Difference]: Without dead ends: 21031 [2023-12-15 18:50:11,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:11,052 INFO L413 NwaCegarLoop]: 1299 mSDtfsCounter, 787 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:50:11,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1306 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 18:50:11,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21031 states. [2023-12-15 18:50:11,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21031 to 20280. [2023-12-15 18:50:11,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20280 states, 20279 states have (on average 1.2444400611469995) internal successors, (25236), 20279 states have internal predecessors, (25236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:11,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20280 states to 20280 states and 25236 transitions. [2023-12-15 18:50:11,244 INFO L78 Accepts]: Start accepts. Automaton has 20280 states and 25236 transitions. Word has length 244 [2023-12-15 18:50:11,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:50:11,245 INFO L495 AbstractCegarLoop]: Abstraction has 20280 states and 25236 transitions. [2023-12-15 18:50:11,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:11,245 INFO L276 IsEmpty]: Start isEmpty. Operand 20280 states and 25236 transitions. [2023-12-15 18:50:11,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-15 18:50:11,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:50:11,247 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:50:11,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:50:11,248 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:50:11,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:50:11,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1553180626, now seen corresponding path program 1 times [2023-12-15 18:50:11,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:50:11,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210689298] [2023-12-15 18:50:11,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:11,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:50:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:11,469 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-15 18:50:11,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:50:11,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210689298] [2023-12-15 18:50:11,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210689298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:50:11,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:50:11,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:50:11,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792479943] [2023-12-15 18:50:11,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:50:11,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:50:11,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:50:11,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:50:11,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:11,470 INFO L87 Difference]: Start difference. First operand 20280 states and 25236 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:14,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:50:14,175 INFO L93 Difference]: Finished difference Result 56330 states and 70968 transitions. [2023-12-15 18:50:14,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:50:14,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2023-12-15 18:50:14,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:50:14,225 INFO L225 Difference]: With dead ends: 56330 [2023-12-15 18:50:14,225 INFO L226 Difference]: Without dead ends: 36802 [2023-12-15 18:50:14,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:14,246 INFO L413 NwaCegarLoop]: 1288 mSDtfsCounter, 750 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 2853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:50:14,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1295 Invalid, 2853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2326 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 18:50:14,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36802 states. [2023-12-15 18:50:14,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36802 to 36051. [2023-12-15 18:50:14,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36051 states, 36050 states have (on average 1.175367545076283) internal successors, (42372), 36050 states have internal predecessors, (42372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:14,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36051 states to 36051 states and 42372 transitions. [2023-12-15 18:50:14,775 INFO L78 Accepts]: Start accepts. Automaton has 36051 states and 42372 transitions. Word has length 253 [2023-12-15 18:50:14,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:50:14,776 INFO L495 AbstractCegarLoop]: Abstraction has 36051 states and 42372 transitions. [2023-12-15 18:50:14,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:14,776 INFO L276 IsEmpty]: Start isEmpty. Operand 36051 states and 42372 transitions. [2023-12-15 18:50:14,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-15 18:50:14,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:50:14,780 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:50:14,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:50:14,780 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:50:14,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:50:14,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1950915019, now seen corresponding path program 1 times [2023-12-15 18:50:14,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:50:14,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810139290] [2023-12-15 18:50:14,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:14,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:50:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-15 18:50:14,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:50:14,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810139290] [2023-12-15 18:50:14,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810139290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:50:14,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:50:14,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:50:14,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873765555] [2023-12-15 18:50:14,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:50:14,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:50:14,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:50:14,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:50:14,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:14,955 INFO L87 Difference]: Start difference. First operand 36051 states and 42372 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:17,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:50:17,655 INFO L93 Difference]: Finished difference Result 87121 states and 104490 transitions. [2023-12-15 18:50:17,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:50:17,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 302 [2023-12-15 18:50:17,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:50:17,790 INFO L225 Difference]: With dead ends: 87121 [2023-12-15 18:50:17,804 INFO L226 Difference]: Without dead ends: 51822 [2023-12-15 18:50:18,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:18,079 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 689 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 856 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 2832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 856 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:50:18,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 432 Invalid, 2832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [856 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 18:50:18,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51822 states. [2023-12-15 18:50:18,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51822 to 45814. [2023-12-15 18:50:18,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45814 states, 45813 states have (on average 1.16298867133783) internal successors, (53280), 45813 states have internal predecessors, (53280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:18,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45814 states to 45814 states and 53280 transitions. [2023-12-15 18:50:18,789 INFO L78 Accepts]: Start accepts. Automaton has 45814 states and 53280 transitions. Word has length 302 [2023-12-15 18:50:18,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:50:18,789 INFO L495 AbstractCegarLoop]: Abstraction has 45814 states and 53280 transitions. [2023-12-15 18:50:18,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:18,789 INFO L276 IsEmpty]: Start isEmpty. Operand 45814 states and 53280 transitions. [2023-12-15 18:50:18,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-12-15 18:50:18,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:50:18,794 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:50:18,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:50:18,794 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:50:18,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:50:18,794 INFO L85 PathProgramCache]: Analyzing trace with hash -469620369, now seen corresponding path program 1 times [2023-12-15 18:50:18,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:50:18,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522329279] [2023-12-15 18:50:18,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:18,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:50:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:19,477 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 24 proven. 214 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-15 18:50:19,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:50:19,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522329279] [2023-12-15 18:50:19,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522329279] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:50:19,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187961480] [2023-12-15 18:50:19,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:19,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:50:19,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:50:19,479 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:50:19,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:50:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:19,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:50:19,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:50:19,657 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-15 18:50:19,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:50:19,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187961480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:50:19,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:50:19,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 18:50:19,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976857894] [2023-12-15 18:50:19,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:50:19,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:50:19,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:50:19,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:50:19,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:50:19,659 INFO L87 Difference]: Start difference. First operand 45814 states and 53280 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:22,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:50:22,018 INFO L93 Difference]: Finished difference Result 90876 states and 105803 transitions. [2023-12-15 18:50:22,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:50:22,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 363 [2023-12-15 18:50:22,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:50:22,068 INFO L225 Difference]: With dead ends: 90876 [2023-12-15 18:50:22,068 INFO L226 Difference]: Without dead ends: 45814 [2023-12-15 18:50:22,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:50:22,077 INFO L413 NwaCegarLoop]: 1178 mSDtfsCounter, 792 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 2724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:50:22,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 1185 Invalid, 2724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 18:50:22,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45814 states. [2023-12-15 18:50:22,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45814 to 41308. [2023-12-15 18:50:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41308 states, 41307 states have (on average 1.1062773863993995) internal successors, (45697), 41307 states have internal predecessors, (45697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:22,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41308 states to 41308 states and 45697 transitions. [2023-12-15 18:50:22,434 INFO L78 Accepts]: Start accepts. Automaton has 41308 states and 45697 transitions. Word has length 363 [2023-12-15 18:50:22,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:50:22,434 INFO L495 AbstractCegarLoop]: Abstraction has 41308 states and 45697 transitions. [2023-12-15 18:50:22,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:22,434 INFO L276 IsEmpty]: Start isEmpty. Operand 41308 states and 45697 transitions. [2023-12-15 18:50:22,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2023-12-15 18:50:22,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:50:22,440 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:50:22,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 18:50:22,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 18:50:22,645 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:50:22,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:50:22,646 INFO L85 PathProgramCache]: Analyzing trace with hash -681757188, now seen corresponding path program 1 times [2023-12-15 18:50:22,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:50:22,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059520111] [2023-12-15 18:50:22,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:22,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:50:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-15 18:50:22,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:50:22,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059520111] [2023-12-15 18:50:22,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059520111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:50:22,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:50:22,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:50:22,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909691168] [2023-12-15 18:50:22,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:50:22,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:50:22,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:50:22,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:50:22,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:22,958 INFO L87 Difference]: Start difference. First operand 41308 states and 45697 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:24,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:50:24,929 INFO L93 Difference]: Finished difference Result 84117 states and 92970 transitions. [2023-12-15 18:50:24,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:50:24,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 401 [2023-12-15 18:50:24,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:50:24,970 INFO L225 Difference]: With dead ends: 84117 [2023-12-15 18:50:24,973 INFO L226 Difference]: Without dead ends: 43561 [2023-12-15 18:50:25,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:25,011 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 761 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:50:25,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1003 Invalid, 2634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 18:50:25,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43561 states. [2023-12-15 18:50:25,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43561 to 41308. [2023-12-15 18:50:25,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41308 states, 41307 states have (on average 1.0859418500496283) internal successors, (44857), 41307 states have internal predecessors, (44857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:25,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41308 states to 41308 states and 44857 transitions. [2023-12-15 18:50:25,475 INFO L78 Accepts]: Start accepts. Automaton has 41308 states and 44857 transitions. Word has length 401 [2023-12-15 18:50:25,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:50:25,475 INFO L495 AbstractCegarLoop]: Abstraction has 41308 states and 44857 transitions. [2023-12-15 18:50:25,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:25,475 INFO L276 IsEmpty]: Start isEmpty. Operand 41308 states and 44857 transitions. [2023-12-15 18:50:25,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-12-15 18:50:25,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:50:25,481 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:50:25,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:50:25,482 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:50:25,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:50:25,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1572853287, now seen corresponding path program 1 times [2023-12-15 18:50:25,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:50:25,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631142144] [2023-12-15 18:50:25,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:25,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:50:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 388 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 18:50:25,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:50:25,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631142144] [2023-12-15 18:50:25,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631142144] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:50:25,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:50:25,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:50:25,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095730365] [2023-12-15 18:50:25,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:50:25,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:50:25,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:50:25,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:50:25,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:25,825 INFO L87 Difference]: Start difference. First operand 41308 states and 44857 transitions. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:28,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:50:28,729 INFO L93 Difference]: Finished difference Result 89374 states and 96937 transitions. [2023-12-15 18:50:28,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:50:28,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 415 [2023-12-15 18:50:28,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:50:28,775 INFO L225 Difference]: With dead ends: 89374 [2023-12-15 18:50:28,775 INFO L226 Difference]: Without dead ends: 48818 [2023-12-15 18:50:28,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:28,787 INFO L413 NwaCegarLoop]: 1216 mSDtfsCounter, 655 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 2912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:50:28,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1222 Invalid, 2912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2607 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 18:50:28,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48818 states. [2023-12-15 18:50:29,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48818 to 46565. [2023-12-15 18:50:29,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46565 states, 46564 states have (on average 1.0794820032643244) internal successors, (50265), 46564 states have internal predecessors, (50265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:29,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46565 states to 46565 states and 50265 transitions. [2023-12-15 18:50:29,170 INFO L78 Accepts]: Start accepts. Automaton has 46565 states and 50265 transitions. Word has length 415 [2023-12-15 18:50:29,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:50:29,171 INFO L495 AbstractCegarLoop]: Abstraction has 46565 states and 50265 transitions. [2023-12-15 18:50:29,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:29,171 INFO L276 IsEmpty]: Start isEmpty. Operand 46565 states and 50265 transitions. [2023-12-15 18:50:29,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2023-12-15 18:50:29,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:50:29,177 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:50:29,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:50:29,177 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:50:29,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:50:29,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1841749597, now seen corresponding path program 1 times [2023-12-15 18:50:29,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:50:29,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261822242] [2023-12-15 18:50:29,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:29,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:50:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:29,652 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 76 proven. 257 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-15 18:50:29,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:50:29,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261822242] [2023-12-15 18:50:29,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261822242] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:50:29,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344007307] [2023-12-15 18:50:29,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:29,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:50:29,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:50:29,669 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) [2023-12-15 18:50:29,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 18:50:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:29,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:50:29,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:50:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-15 18:50:29,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:50:29,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344007307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:50:29,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:50:29,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 18:50:29,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551115058] [2023-12-15 18:50:29,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:50:29,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:50:29,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:50:29,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:50:29,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:50:29,946 INFO L87 Difference]: Start difference. First operand 46565 states and 50265 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:32,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:50:32,182 INFO L93 Difference]: Finished difference Result 125422 states and 136017 transitions. [2023-12-15 18:50:32,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:50:32,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 419 [2023-12-15 18:50:32,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:50:32,272 INFO L225 Difference]: With dead ends: 125422 [2023-12-15 18:50:32,273 INFO L226 Difference]: Without dead ends: 79609 [2023-12-15 18:50:32,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:50:32,306 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 611 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:50:32,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 1319 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 18:50:32,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79609 states. [2023-12-15 18:50:33,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79609 to 69095. [2023-12-15 18:50:33,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69095 states, 69094 states have (on average 1.0670101600717863) internal successors, (73724), 69094 states have internal predecessors, (73724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:33,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69095 states to 69095 states and 73724 transitions. [2023-12-15 18:50:33,265 INFO L78 Accepts]: Start accepts. Automaton has 69095 states and 73724 transitions. Word has length 419 [2023-12-15 18:50:33,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:50:33,266 INFO L495 AbstractCegarLoop]: Abstraction has 69095 states and 73724 transitions. [2023-12-15 18:50:33,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:33,266 INFO L276 IsEmpty]: Start isEmpty. Operand 69095 states and 73724 transitions. [2023-12-15 18:50:33,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2023-12-15 18:50:33,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:50:33,273 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:50:33,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 18:50:33,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:50:33,479 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:50:33,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:50:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash 2105005077, now seen corresponding path program 1 times [2023-12-15 18:50:33,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:50:33,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414418751] [2023-12-15 18:50:33,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:33,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:50:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 555 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-12-15 18:50:33,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:50:33,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414418751] [2023-12-15 18:50:33,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414418751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:50:33,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:50:33,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:50:33,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141729611] [2023-12-15 18:50:33,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:50:33,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:50:33,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:50:33,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:50:33,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:33,707 INFO L87 Difference]: Start difference. First operand 69095 states and 73724 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:36,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:50:36,360 INFO L93 Difference]: Finished difference Result 159968 states and 171261 transitions. [2023-12-15 18:50:36,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:50:36,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 487 [2023-12-15 18:50:36,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:50:36,455 INFO L225 Difference]: With dead ends: 159968 [2023-12-15 18:50:36,455 INFO L226 Difference]: Without dead ends: 91625 [2023-12-15 18:50:36,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:36,489 INFO L413 NwaCegarLoop]: 1268 mSDtfsCounter, 669 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 2356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:50:36,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1275 Invalid, 2356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 18:50:36,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91625 states. [2023-12-15 18:50:37,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91625 to 89372. [2023-12-15 18:50:37,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89372 states, 89371 states have (on average 1.0631748553781428) internal successors, (95017), 89371 states have internal predecessors, (95017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:37,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89372 states to 89372 states and 95017 transitions. [2023-12-15 18:50:37,684 INFO L78 Accepts]: Start accepts. Automaton has 89372 states and 95017 transitions. Word has length 487 [2023-12-15 18:50:37,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:50:37,684 INFO L495 AbstractCegarLoop]: Abstraction has 89372 states and 95017 transitions. [2023-12-15 18:50:37,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:37,685 INFO L276 IsEmpty]: Start isEmpty. Operand 89372 states and 95017 transitions. [2023-12-15 18:50:37,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2023-12-15 18:50:37,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:50:37,708 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 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] [2023-12-15 18:50:37,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:50:37,709 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:50:37,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:50:37,709 INFO L85 PathProgramCache]: Analyzing trace with hash -266794491, now seen corresponding path program 1 times [2023-12-15 18:50:37,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:50:37,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782882188] [2023-12-15 18:50:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:37,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:50:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2023-12-15 18:50:37,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:50:37,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782882188] [2023-12-15 18:50:37,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782882188] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:50:37,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:50:37,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:50:37,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53074396] [2023-12-15 18:50:37,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:50:37,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:50:37,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:50:37,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:50:37,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:37,951 INFO L87 Difference]: Start difference. First operand 89372 states and 95017 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:40,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:50:40,433 INFO L93 Difference]: Finished difference Result 193763 states and 206426 transitions. [2023-12-15 18:50:40,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:50:40,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 504 [2023-12-15 18:50:40,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:50:40,557 INFO L225 Difference]: With dead ends: 193763 [2023-12-15 18:50:40,557 INFO L226 Difference]: Without dead ends: 105143 [2023-12-15 18:50:40,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:50:40,594 INFO L413 NwaCegarLoop]: 1107 mSDtfsCounter, 860 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 2602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:50:40,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 1114 Invalid, 2602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 18:50:40,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105143 states. [2023-12-15 18:50:41,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105143 to 103641. [2023-12-15 18:50:41,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103641 states, 103640 states have (on average 1.0611250482439212) internal successors, (109975), 103640 states have internal predecessors, (109975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:42,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103641 states to 103641 states and 109975 transitions. [2023-12-15 18:50:42,005 INFO L78 Accepts]: Start accepts. Automaton has 103641 states and 109975 transitions. Word has length 504 [2023-12-15 18:50:42,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:50:42,005 INFO L495 AbstractCegarLoop]: Abstraction has 103641 states and 109975 transitions. [2023-12-15 18:50:42,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:50:42,006 INFO L276 IsEmpty]: Start isEmpty. Operand 103641 states and 109975 transitions. [2023-12-15 18:50:42,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-12-15 18:50:42,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:50:42,023 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2023-12-15 18:50:42,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 18:50:42,023 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:50:42,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:50:42,023 INFO L85 PathProgramCache]: Analyzing trace with hash -263719344, now seen corresponding path program 1 times [2023-12-15 18:50:42,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:50:42,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315846339] [2023-12-15 18:50:42,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:42,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:50:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 811 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:50:43,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:50:43,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315846339] [2023-12-15 18:50:43,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315846339] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:50:43,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954545897] [2023-12-15 18:50:43,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:50:43,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:50:43,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:50:43,873 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) [2023-12-15 18:50:43,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 18:50:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:50:44,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 18:50:44,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:50:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 730 proven. 116 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 18:50:45,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-15 18:50:45,202 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 18:50:45,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 18:50:45,226 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:50:45,245 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:50:45,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 18:50:45,408 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 660 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-2-2-1 context. [2023-12-15 18:50:45,414 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:50:45,416 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:50:45,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:50:45 BoogieIcfgContainer [2023-12-15 18:50:45,418 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:50:45,418 INFO L158 Benchmark]: Toolchain (without parser) took 60291.52ms. Allocated memory was 182.5MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 123.0MB in the beginning and 2.1GB in the end (delta: -1.9GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-15 18:50:45,418 INFO L158 Benchmark]: CDTParser took 0.81ms. Allocated memory is still 182.5MB. Free memory was 140.1MB in the beginning and 140.0MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:50:45,418 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1139.54ms. Allocated memory was 182.5MB in the beginning and 238.0MB in the end (delta: 55.6MB). Free memory was 122.7MB in the beginning and 125.7MB in the end (delta: -3.0MB). Peak memory consumption was 56.2MB. Max. memory is 8.0GB. [2023-12-15 18:50:45,419 INFO L158 Benchmark]: Boogie Procedure Inliner took 311.50ms. Allocated memory is still 238.0MB. Free memory was 125.7MB in the beginning and 136.6MB in the end (delta: -11.0MB). Peak memory consumption was 69.3MB. Max. memory is 8.0GB. [2023-12-15 18:50:45,419 INFO L158 Benchmark]: Boogie Preprocessor took 429.77ms. Allocated memory was 238.0MB in the beginning and 439.4MB in the end (delta: 201.3MB). Free memory was 136.6MB in the beginning and 313.3MB in the end (delta: -176.7MB). Peak memory consumption was 64.5MB. Max. memory is 8.0GB. [2023-12-15 18:50:45,419 INFO L158 Benchmark]: RCFGBuilder took 3002.71ms. Allocated memory was 439.4MB in the beginning and 680.5MB in the end (delta: 241.2MB). Free memory was 313.3MB in the beginning and 330.1MB in the end (delta: -16.8MB). Peak memory consumption was 228.1MB. Max. memory is 8.0GB. [2023-12-15 18:50:45,419 INFO L158 Benchmark]: TraceAbstraction took 55400.98ms. Allocated memory was 680.5MB in the beginning and 3.9GB in the end (delta: 3.2GB). Free memory was 329.6MB in the beginning and 2.1GB in the end (delta: -1.7GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-15 18:50:45,420 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81ms. Allocated memory is still 182.5MB. Free memory was 140.1MB in the beginning and 140.0MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1139.54ms. Allocated memory was 182.5MB in the beginning and 238.0MB in the end (delta: 55.6MB). Free memory was 122.7MB in the beginning and 125.7MB in the end (delta: -3.0MB). Peak memory consumption was 56.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 311.50ms. Allocated memory is still 238.0MB. Free memory was 125.7MB in the beginning and 136.6MB in the end (delta: -11.0MB). Peak memory consumption was 69.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 429.77ms. Allocated memory was 238.0MB in the beginning and 439.4MB in the end (delta: 201.3MB). Free memory was 136.6MB in the beginning and 313.3MB in the end (delta: -176.7MB). Peak memory consumption was 64.5MB. Max. memory is 8.0GB. * RCFGBuilder took 3002.71ms. Allocated memory was 439.4MB in the beginning and 680.5MB in the end (delta: 241.2MB). Free memory was 313.3MB in the beginning and 330.1MB in the end (delta: -16.8MB). Peak memory consumption was 228.1MB. Max. memory is 8.0GB. * TraceAbstraction took 55400.98ms. Allocated memory was 680.5MB in the beginning and 3.9GB in the end (delta: 3.2GB). Free memory was 329.6MB in the beginning and 2.1GB in the end (delta: -1.7GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 64). Cancelled while NwaCegarLoop was analyzing trace of length 660 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 756 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.4s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 39.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11755 SdHoareTripleChecker+Valid, 34.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11755 mSDsluCounter, 13740 SdHoareTripleChecker+Invalid, 28.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 114 mSDsCounter, 7830 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35994 IncrementalHoareTripleChecker+Invalid, 43824 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7830 mSolverCounterUnsat, 13626 mSDtfsCounter, 35994 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 979 GetRequests, 953 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103641occurred in iteration=15, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.7s AutomataMinimizationTime, 15 MinimizatonAttempts, 30793 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 4859 NumberOfCodeBlocks, 4859 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 4841 ConstructedInterpolants, 0 QuantifiedInterpolants, 14758 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1271 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 18 InterpolantComputations, 15 PerfectInterpolantSequences, 3590/4068 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown