/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:08:27,469 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:08:27,507 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:08:27,511 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:08:27,511 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:08:27,531 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:08:27,535 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:08:27,536 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:08:27,536 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:08:27,539 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:08:27,540 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:08:27,540 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:08:27,541 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:08:27,542 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:08:27,542 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:08:27,542 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:08:27,542 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:08:27,543 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:08:27,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:08:27,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:08:27,543 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:08:27,544 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:08:27,544 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:08:27,544 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:08:27,544 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:08:27,544 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:08:27,545 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:08:27,545 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:08:27,545 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:08:27,545 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:08:27,546 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:08:27,546 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:08:27,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:08:27,547 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:08:27,547 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:08:27,547 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:08:27,547 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:08:27,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:08:27,547 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:08:27,548 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:08:27,548 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:08:27,548 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:08:27,548 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:08:27,548 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:08:27,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:08:27,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:08:27,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:08:27,757 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:08:27,757 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:08:27,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label13.c [2023-12-15 19:08:28,881 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:08:29,204 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:08:29,205 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label13.c [2023-12-15 19:08:29,221 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b962c2ca/8fdc871c2e084ee3ba91d2a600e531d3/FLAG54c97bdad [2023-12-15 19:08:29,233 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b962c2ca/8fdc871c2e084ee3ba91d2a600e531d3 [2023-12-15 19:08:29,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:08:29,237 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:08:29,239 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:08:29,239 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:08:29,242 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:08:29,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:08:29" (1/1) ... [2023-12-15 19:08:29,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62551cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:08:29, skipping insertion in model container [2023-12-15 19:08:29,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:08:29" (1/1) ... [2023-12-15 19:08:29,311 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:08:29,495 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label13.c[4647,4660] [2023-12-15 19:08:29,907 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:08:29,915 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:08:29,932 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label13.c[4647,4660] [2023-12-15 19:08:30,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:08:30,124 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:08:30,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:08:30 WrapperNode [2023-12-15 19:08:30,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:08:30,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:08:30,126 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:08:30,126 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:08:30,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:08:30" (1/1) ... [2023-12-15 19:08:30,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:08:30" (1/1) ... [2023-12-15 19:08:30,387 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-15 19:08:30,387 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:08:30,388 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:08:30,388 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:08:30,388 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:08:30,396 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:08:30" (1/1) ... [2023-12-15 19:08:30,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:08:30" (1/1) ... [2023-12-15 19:08:30,427 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:08:30" (1/1) ... [2023-12-15 19:08:30,544 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:08:30,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:08:30" (1/1) ... [2023-12-15 19:08:30,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:08:30" (1/1) ... [2023-12-15 19:08:30,673 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:08:30" (1/1) ... [2023-12-15 19:08:30,694 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:08:30" (1/1) ... [2023-12-15 19:08:30,724 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:08:30" (1/1) ... [2023-12-15 19:08:30,749 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:08:30" (1/1) ... [2023-12-15 19:08:30,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:08:30,794 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:08:30,794 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:08:30,795 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:08:30,796 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:08:30" (1/1) ... [2023-12-15 19:08:30,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:08:30,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:08:30,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 19:08:30,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:08:30,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:08:30,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:08:30,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:08:30,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:08:30,944 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:08:30,946 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:08:33,626 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:08:33,656 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:08:33,656 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:08:33,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:08:33 BoogieIcfgContainer [2023-12-15 19:08:33,657 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:08:33,658 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:08:33,658 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:08:33,661 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:08:33,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:08:29" (1/3) ... [2023-12-15 19:08:33,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d38a9ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:08:33, skipping insertion in model container [2023-12-15 19:08:33,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:08:30" (2/3) ... [2023-12-15 19:08:33,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d38a9ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:08:33, skipping insertion in model container [2023-12-15 19:08:33,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:08:33" (3/3) ... [2023-12-15 19:08:33,662 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label13.c [2023-12-15 19:08:33,674 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:08:33,674 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:08:33,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:08:33,760 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;@5dccae05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:08:33,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:08:33,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:33,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-15 19:08:33,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:33,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:33,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:33,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:33,773 INFO L85 PathProgramCache]: Analyzing trace with hash 122835800, now seen corresponding path program 1 times [2023-12-15 19:08:33,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:33,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510621507] [2023-12-15 19:08:33,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:33,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:33,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:08:33,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:33,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510621507] [2023-12-15 19:08:33,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510621507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:33,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:33,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:08:33,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221994265] [2023-12-15 19:08:33,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:33,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:08:33,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:33,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:08:34,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:08:34,002 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:34,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:34,070 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-15 19:08:34,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:08:34,072 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-15 19:08:34,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:34,092 INFO L225 Difference]: With dead ends: 1055 [2023-12-15 19:08:34,092 INFO L226 Difference]: Without dead ends: 526 [2023-12-15 19:08:34,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:08:34,097 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:34,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:08:34,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-15 19:08:34,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-15 19:08:34,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-15 19:08:34,183 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 29 [2023-12-15 19:08:34,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:34,183 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-15 19:08:34,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:34,183 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-15 19:08:34,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-15 19:08:34,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:34,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:34,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 19:08:34,186 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:34,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:34,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1781437967, now seen corresponding path program 1 times [2023-12-15 19:08:34,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:34,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017943596] [2023-12-15 19:08:34,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:34,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:08:34,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:34,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017943596] [2023-12-15 19:08:34,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017943596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:34,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:34,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:08:34,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192269311] [2023-12-15 19:08:34,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:34,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:34,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:34,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:34,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:34,347 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:36,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:36,514 INFO L93 Difference]: Finished difference Result 1522 states and 2728 transitions. [2023-12-15 19:08:36,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:36,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-15 19:08:36,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:36,520 INFO L225 Difference]: With dead ends: 1522 [2023-12-15 19:08:36,520 INFO L226 Difference]: Without dead ends: 997 [2023-12-15 19:08:36,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:36,521 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 481 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:36,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 239 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 19:08:36,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-12-15 19:08:36,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 981. [2023-12-15 19:08:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.7081632653061225) internal successors, (1674), 980 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:36,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1674 transitions. [2023-12-15 19:08:36,590 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1674 transitions. Word has length 29 [2023-12-15 19:08:36,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:36,600 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1674 transitions. [2023-12-15 19:08:36,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:36,601 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1674 transitions. [2023-12-15 19:08:36,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-15 19:08:36,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:36,603 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:36,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 19:08:36,604 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:36,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:36,604 INFO L85 PathProgramCache]: Analyzing trace with hash 667266048, now seen corresponding path program 1 times [2023-12-15 19:08:36,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:36,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895120414] [2023-12-15 19:08:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:36,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:36,812 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:08:36,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:36,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895120414] [2023-12-15 19:08:36,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895120414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:36,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:36,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:08:36,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183586064] [2023-12-15 19:08:36,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:36,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:36,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:36,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:36,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:36,814 INFO L87 Difference]: Start difference. First operand 981 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:38,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:38,828 INFO L93 Difference]: Finished difference Result 2840 states and 4880 transitions. [2023-12-15 19:08:38,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:38,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-15 19:08:38,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:38,837 INFO L225 Difference]: With dead ends: 2840 [2023-12-15 19:08:38,837 INFO L226 Difference]: Without dead ends: 1860 [2023-12-15 19:08:38,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:38,844 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:38,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 494 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 19:08:38,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2023-12-15 19:08:38,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1856. [2023-12-15 19:08:38,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 1.4549865229110512) internal successors, (2699), 1855 states have internal predecessors, (2699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:38,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2699 transitions. [2023-12-15 19:08:38,890 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2699 transitions. Word has length 94 [2023-12-15 19:08:38,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:38,894 INFO L495 AbstractCegarLoop]: Abstraction has 1856 states and 2699 transitions. [2023-12-15 19:08:38,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:38,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2699 transitions. [2023-12-15 19:08:38,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 19:08:38,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:38,905 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:38,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 19:08:38,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:38,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:38,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1376556341, now seen corresponding path program 1 times [2023-12-15 19:08:38,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:38,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117241742] [2023-12-15 19:08:38,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:38,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:39,256 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:08:39,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:39,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117241742] [2023-12-15 19:08:39,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117241742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:39,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:39,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:08:39,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993745112] [2023-12-15 19:08:39,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:39,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:39,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:39,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:39,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:39,258 INFO L87 Difference]: Start difference. First operand 1856 states and 2699 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:41,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:41,325 INFO L93 Difference]: Finished difference Result 4590 states and 6639 transitions. [2023-12-15 19:08:41,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:41,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-12-15 19:08:41,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:41,333 INFO L225 Difference]: With dead ends: 4590 [2023-12-15 19:08:41,334 INFO L226 Difference]: Without dead ends: 2735 [2023-12-15 19:08:41,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:41,336 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:41,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 535 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 19:08:41,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2023-12-15 19:08:41,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 2715. [2023-12-15 19:08:41,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2714 states have (on average 1.3909358879882092) internal successors, (3775), 2714 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:41,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 3775 transitions. [2023-12-15 19:08:41,366 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 3775 transitions. Word has length 134 [2023-12-15 19:08:41,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:41,367 INFO L495 AbstractCegarLoop]: Abstraction has 2715 states and 3775 transitions. [2023-12-15 19:08:41,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:41,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 3775 transitions. [2023-12-15 19:08:41,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-15 19:08:41,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:41,369 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:41,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 19:08:41,369 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:41,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:41,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1101877126, now seen corresponding path program 1 times [2023-12-15 19:08:41,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:41,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333199628] [2023-12-15 19:08:41,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:41,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:08:41,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:41,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333199628] [2023-12-15 19:08:41,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333199628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:41,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:41,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:08:41,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647659684] [2023-12-15 19:08:41,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:41,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:41,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:41,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:41,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:41,523 INFO L87 Difference]: Start difference. First operand 2715 states and 3775 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:43,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:43,050 INFO L93 Difference]: Finished difference Result 6708 states and 9428 transitions. [2023-12-15 19:08:43,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:43,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2023-12-15 19:08:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:43,060 INFO L225 Difference]: With dead ends: 6708 [2023-12-15 19:08:43,060 INFO L226 Difference]: Without dead ends: 3994 [2023-12-15 19:08:43,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:43,066 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:43,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:08:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2023-12-15 19:08:43,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3141. [2023-12-15 19:08:43,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 3140 states have (on average 1.2745222929936306) internal successors, (4002), 3140 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:43,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 4002 transitions. [2023-12-15 19:08:43,105 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 4002 transitions. Word has length 140 [2023-12-15 19:08:43,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:43,106 INFO L495 AbstractCegarLoop]: Abstraction has 3141 states and 4002 transitions. [2023-12-15 19:08:43,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:43,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 4002 transitions. [2023-12-15 19:08:43,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-15 19:08:43,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:43,110 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:43,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 19:08:43,110 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:43,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:43,111 INFO L85 PathProgramCache]: Analyzing trace with hash -525664546, now seen corresponding path program 1 times [2023-12-15 19:08:43,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:43,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673163740] [2023-12-15 19:08:43,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:43,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:08:43,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:43,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673163740] [2023-12-15 19:08:43,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673163740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:43,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:43,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:08:43,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306403571] [2023-12-15 19:08:43,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:43,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:08:43,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:43,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:08:43,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:08:43,370 INFO L87 Difference]: Start difference. First operand 3141 states and 4002 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 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 19:08:45,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:45,643 INFO L93 Difference]: Finished difference Result 8006 states and 10509 transitions. [2023-12-15 19:08:45,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:08:45,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 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 177 [2023-12-15 19:08:45,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:45,670 INFO L225 Difference]: With dead ends: 8006 [2023-12-15 19:08:45,670 INFO L226 Difference]: Without dead ends: 4866 [2023-12-15 19:08:45,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:08:45,676 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 1655 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 978 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 978 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:45,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 839 Invalid, 2753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [978 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 19:08:45,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4866 states. [2023-12-15 19:08:45,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4866 to 4851. [2023-12-15 19:08:45,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4851 states, 4850 states have (on average 1.26659793814433) internal successors, (6143), 4850 states have internal predecessors, (6143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:45,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 6143 transitions. [2023-12-15 19:08:45,748 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 6143 transitions. Word has length 177 [2023-12-15 19:08:45,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:45,748 INFO L495 AbstractCegarLoop]: Abstraction has 4851 states and 6143 transitions. [2023-12-15 19:08:45,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 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 19:08:45,749 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 6143 transitions. [2023-12-15 19:08:45,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-15 19:08:45,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:45,752 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:45,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 19:08:45,752 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:45,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:45,752 INFO L85 PathProgramCache]: Analyzing trace with hash -677198513, now seen corresponding path program 1 times [2023-12-15 19:08:45,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:45,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631214056] [2023-12-15 19:08:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:45,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-15 19:08:45,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:45,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631214056] [2023-12-15 19:08:45,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631214056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:45,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:45,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:08:45,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186984166] [2023-12-15 19:08:45,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:45,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:45,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:45,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:45,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:45,879 INFO L87 Difference]: Start difference. First operand 4851 states and 6143 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:47,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:47,899 INFO L93 Difference]: Finished difference Result 12248 states and 15824 transitions. [2023-12-15 19:08:47,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:47,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2023-12-15 19:08:47,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:47,918 INFO L225 Difference]: With dead ends: 12248 [2023-12-15 19:08:47,918 INFO L226 Difference]: Without dead ends: 7398 [2023-12-15 19:08:47,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:47,924 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 417 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:47,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 543 Invalid, 1696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 19:08:47,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7398 states. [2023-12-15 19:08:47,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7398 to 4825. [2023-12-15 19:08:47,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4825 states, 4824 states have (on average 1.265339966832504) internal successors, (6104), 4824 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:48,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4825 states to 4825 states and 6104 transitions. [2023-12-15 19:08:48,001 INFO L78 Accepts]: Start accepts. Automaton has 4825 states and 6104 transitions. Word has length 183 [2023-12-15 19:08:48,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:48,001 INFO L495 AbstractCegarLoop]: Abstraction has 4825 states and 6104 transitions. [2023-12-15 19:08:48,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:48,001 INFO L276 IsEmpty]: Start isEmpty. Operand 4825 states and 6104 transitions. [2023-12-15 19:08:48,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-15 19:08:48,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:48,003 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:08:48,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 19:08:48,003 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:48,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:48,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1784133131, now seen corresponding path program 1 times [2023-12-15 19:08:48,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:48,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034389378] [2023-12-15 19:08:48,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:48,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:08:48,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:48,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034389378] [2023-12-15 19:08:48,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034389378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:48,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:48,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:08:48,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354821661] [2023-12-15 19:08:48,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:48,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:48,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:48,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:48,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:48,088 INFO L87 Difference]: Start difference. First operand 4825 states and 6104 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:50,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:50,081 INFO L93 Difference]: Finished difference Result 13485 states and 17136 transitions. [2023-12-15 19:08:50,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:50,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2023-12-15 19:08:50,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:50,105 INFO L225 Difference]: With dead ends: 13485 [2023-12-15 19:08:50,105 INFO L226 Difference]: Without dead ends: 7354 [2023-12-15 19:08:50,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:50,110 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 563 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 1822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:50,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 632 Invalid, 1822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 19:08:50,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2023-12-15 19:08:50,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 6498. [2023-12-15 19:08:50,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6498 states, 6497 states have (on average 1.187163306141296) internal successors, (7713), 6497 states have internal predecessors, (7713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:50,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6498 states to 6498 states and 7713 transitions. [2023-12-15 19:08:50,182 INFO L78 Accepts]: Start accepts. Automaton has 6498 states and 7713 transitions. Word has length 196 [2023-12-15 19:08:50,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:50,183 INFO L495 AbstractCegarLoop]: Abstraction has 6498 states and 7713 transitions. [2023-12-15 19:08:50,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:50,183 INFO L276 IsEmpty]: Start isEmpty. Operand 6498 states and 7713 transitions. [2023-12-15 19:08:50,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-15 19:08:50,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:50,185 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:50,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 19:08:50,186 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:50,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:50,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1685445163, now seen corresponding path program 1 times [2023-12-15 19:08:50,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:50,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583456732] [2023-12-15 19:08:50,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:50,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:08:50,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:50,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583456732] [2023-12-15 19:08:50,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583456732] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:50,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:50,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:08:50,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376229614] [2023-12-15 19:08:50,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:50,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:50,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:50,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:50,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:50,364 INFO L87 Difference]: Start difference. First operand 6498 states and 7713 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:51,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:51,863 INFO L93 Difference]: Finished difference Result 14277 states and 16919 transitions. [2023-12-15 19:08:51,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:51,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2023-12-15 19:08:51,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:51,874 INFO L225 Difference]: With dead ends: 14277 [2023-12-15 19:08:51,874 INFO L226 Difference]: Without dead ends: 7780 [2023-12-15 19:08:51,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:51,880 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 406 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:51,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 809 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:08:51,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7780 states. [2023-12-15 19:08:51,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7780 to 7350. [2023-12-15 19:08:51,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7350 states, 7349 states have (on average 1.179480201387944) internal successors, (8668), 7349 states have internal predecessors, (8668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:51,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7350 states to 7350 states and 8668 transitions. [2023-12-15 19:08:51,956 INFO L78 Accepts]: Start accepts. Automaton has 7350 states and 8668 transitions. Word has length 249 [2023-12-15 19:08:51,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:51,957 INFO L495 AbstractCegarLoop]: Abstraction has 7350 states and 8668 transitions. [2023-12-15 19:08:51,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:51,957 INFO L276 IsEmpty]: Start isEmpty. Operand 7350 states and 8668 transitions. [2023-12-15 19:08:51,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-15 19:08:51,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:51,999 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:51,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 19:08:51,999 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:51,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:51,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1244440595, now seen corresponding path program 1 times [2023-12-15 19:08:51,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:52,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439772716] [2023-12-15 19:08:52,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:52,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:08:52,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:52,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439772716] [2023-12-15 19:08:52,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439772716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:52,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:52,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:08:52,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880422696] [2023-12-15 19:08:52,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:52,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:08:52,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:52,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:08:52,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:52,156 INFO L87 Difference]: Start difference. First operand 7350 states and 8668 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:53,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:53,693 INFO L93 Difference]: Finished difference Result 18526 states and 21830 transitions. [2023-12-15 19:08:53,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:08:53,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2023-12-15 19:08:53,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:53,707 INFO L225 Difference]: With dead ends: 18526 [2023-12-15 19:08:53,708 INFO L226 Difference]: Without dead ends: 11177 [2023-12-15 19:08:53,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:08:53,715 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 435 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:53,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 334 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:08:53,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11177 states. [2023-12-15 19:08:53,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11177 to 9899. [2023-12-15 19:08:53,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9899 states, 9898 states have (on average 1.1641745807233785) internal successors, (11523), 9898 states have internal predecessors, (11523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:53,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9899 states to 9899 states and 11523 transitions. [2023-12-15 19:08:53,820 INFO L78 Accepts]: Start accepts. Automaton has 9899 states and 11523 transitions. Word has length 267 [2023-12-15 19:08:53,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:53,820 INFO L495 AbstractCegarLoop]: Abstraction has 9899 states and 11523 transitions. [2023-12-15 19:08:53,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:53,820 INFO L276 IsEmpty]: Start isEmpty. Operand 9899 states and 11523 transitions. [2023-12-15 19:08:53,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-12-15 19:08:53,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:53,825 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:53,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 19:08:53,825 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:53,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1302460218, now seen corresponding path program 1 times [2023-12-15 19:08:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:53,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068781369] [2023-12-15 19:08:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:54,206 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:08:54,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:54,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068781369] [2023-12-15 19:08:54,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068781369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:08:54,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:08:54,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:08:54,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225503010] [2023-12-15 19:08:54,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:54,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:08:54,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:54,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:08:54,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:08:54,208 INFO L87 Difference]: Start difference. First operand 9899 states and 11523 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:56,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:08:56,795 INFO L93 Difference]: Finished difference Result 31341 states and 36567 transitions. [2023-12-15 19:08:56,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:08:56,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 289 [2023-12-15 19:08:56,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:08:56,848 INFO L225 Difference]: With dead ends: 31341 [2023-12-15 19:08:56,849 INFO L226 Difference]: Without dead ends: 20164 [2023-12-15 19:08:56,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:08:56,860 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 889 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:08:56,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 210 Invalid, 2821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 19:08:56,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20164 states. [2023-12-15 19:08:57,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20164 to 18857. [2023-12-15 19:08:57,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18857 states, 18856 states have (on average 1.1585171828595673) internal successors, (21845), 18856 states have internal predecessors, (21845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:57,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18857 states to 18857 states and 21845 transitions. [2023-12-15 19:08:57,084 INFO L78 Accepts]: Start accepts. Automaton has 18857 states and 21845 transitions. Word has length 289 [2023-12-15 19:08:57,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:08:57,085 INFO L495 AbstractCegarLoop]: Abstraction has 18857 states and 21845 transitions. [2023-12-15 19:08:57,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:08:57,085 INFO L276 IsEmpty]: Start isEmpty. Operand 18857 states and 21845 transitions. [2023-12-15 19:08:57,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-12-15 19:08:57,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:08:57,091 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:08:57,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 19:08:57,092 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:08:57,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:08:57,092 INFO L85 PathProgramCache]: Analyzing trace with hash -600519643, now seen corresponding path program 1 times [2023-12-15 19:08:57,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:08:57,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933100551] [2023-12-15 19:08:57,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:57,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:08:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:57,408 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 198 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-15 19:08:57,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:08:57,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933100551] [2023-12-15 19:08:57,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933100551] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:08:57,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224590107] [2023-12-15 19:08:57,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:08:57,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:08:57,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:08:57,420 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:08:57,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:08:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:08:57,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 19:08:57,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:08:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 155 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:08:57,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:08:58,412 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:08:58,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224590107] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:08:58,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:08:58,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2023-12-15 19:08:58,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277252992] [2023-12-15 19:08:58,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:08:58,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:08:58,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:08:58,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:08:58,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:08:58,414 INFO L87 Difference]: Start difference. First operand 18857 states and 21845 transitions. Second operand has 5 states, 5 states have (on average 74.0) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:01,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:01,493 INFO L93 Difference]: Finished difference Result 56886 states and 65970 transitions. [2023-12-15 19:09:01,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:09:01,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 74.0) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 370 [2023-12-15 19:09:01,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:01,537 INFO L225 Difference]: With dead ends: 56886 [2023-12-15 19:09:01,537 INFO L226 Difference]: Without dead ends: 37180 [2023-12-15 19:09:01,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 735 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:09:01,561 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 1575 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2573 mSolverCounterSat, 1072 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 3645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1072 IncrementalHoareTripleChecker+Valid, 2573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:01,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 133 Invalid, 3645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1072 Valid, 2573 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 19:09:01,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37180 states. [2023-12-15 19:09:02,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37180 to 36744. [2023-12-15 19:09:02,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36744 states, 36743 states have (on average 1.136161990038919) internal successors, (41746), 36743 states have internal predecessors, (41746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:02,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36744 states to 36744 states and 41746 transitions. [2023-12-15 19:09:02,075 INFO L78 Accepts]: Start accepts. Automaton has 36744 states and 41746 transitions. Word has length 370 [2023-12-15 19:09:02,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:02,076 INFO L495 AbstractCegarLoop]: Abstraction has 36744 states and 41746 transitions. [2023-12-15 19:09:02,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.0) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:02,076 INFO L276 IsEmpty]: Start isEmpty. Operand 36744 states and 41746 transitions. [2023-12-15 19:09:02,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-12-15 19:09:02,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:02,083 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:02,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 19:09:02,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 19:09:02,290 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:02,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:02,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1742095035, now seen corresponding path program 1 times [2023-12-15 19:09:02,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:02,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943876320] [2023-12-15 19:09:02,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:02,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:03,332 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 242 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-15 19:09:03,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:03,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943876320] [2023-12-15 19:09:03,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943876320] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:09:03,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906875689] [2023-12-15 19:09:03,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:03,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:09:03,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:09:03,333 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:09:03,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:09:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:03,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 19:09:03,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:09:03,794 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 242 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-15 19:09:03,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:09:04,554 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 242 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-15 19:09:04,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906875689] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:09:04,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 19:09:04,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2023-12-15 19:09:04,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431292842] [2023-12-15 19:09:04,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 19:09:04,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 19:09:04,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:04,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 19:09:04,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-15 19:09:04,557 INFO L87 Difference]: Start difference. First operand 36744 states and 41746 transitions. Second operand has 10 states, 10 states have (on average 76.2) internal successors, (762), 9 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:12,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:12,431 INFO L93 Difference]: Finished difference Result 118664 states and 134593 transitions. [2023-12-15 19:09:12,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 19:09:12,432 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 76.2) internal successors, (762), 9 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 413 [2023-12-15 19:09:12,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:12,546 INFO L225 Difference]: With dead ends: 118664 [2023-12-15 19:09:12,546 INFO L226 Difference]: Without dead ends: 81921 [2023-12-15 19:09:12,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 835 GetRequests, 821 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-12-15 19:09:12,567 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 5930 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 9621 mSolverCounterSat, 912 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5930 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 10533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 912 IncrementalHoareTripleChecker+Valid, 9621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:12,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5930 Valid, 450 Invalid, 10533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [912 Valid, 9621 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-15 19:09:12,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81921 states. [2023-12-15 19:09:13,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81921 to 78062. [2023-12-15 19:09:13,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78062 states, 78061 states have (on average 1.1161143208516418) internal successors, (87125), 78061 states have internal predecessors, (87125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:13,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78062 states to 78062 states and 87125 transitions. [2023-12-15 19:09:13,774 INFO L78 Accepts]: Start accepts. Automaton has 78062 states and 87125 transitions. Word has length 413 [2023-12-15 19:09:13,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:13,775 INFO L495 AbstractCegarLoop]: Abstraction has 78062 states and 87125 transitions. [2023-12-15 19:09:13,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.2) internal successors, (762), 9 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:13,775 INFO L276 IsEmpty]: Start isEmpty. Operand 78062 states and 87125 transitions. [2023-12-15 19:09:13,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2023-12-15 19:09:13,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:13,784 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:13,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:09:13,988 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,SelfDestructingSolverStorable12 [2023-12-15 19:09:13,990 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:13,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:13,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1200490449, now seen corresponding path program 1 times [2023-12-15 19:09:13,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:13,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859208895] [2023-12-15 19:09:13,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:13,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-12-15 19:09:14,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:14,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859208895] [2023-12-15 19:09:14,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859208895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:14,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:14,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:09:14,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677594382] [2023-12-15 19:09:14,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:14,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:09:14,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:14,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:09:14,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:14,213 INFO L87 Difference]: Start difference. First operand 78062 states and 87125 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:15,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:15,915 INFO L93 Difference]: Finished difference Result 161223 states and 179982 transitions. [2023-12-15 19:09:15,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:09:15,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 474 [2023-12-15 19:09:15,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:16,074 INFO L225 Difference]: With dead ends: 161223 [2023-12-15 19:09:16,075 INFO L226 Difference]: Without dead ends: 84012 [2023-12-15 19:09:16,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:16,121 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 277 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:16,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 728 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:09:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84012 states. [2023-12-15 19:09:17,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84012 to 80187. [2023-12-15 19:09:17,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80187 states, 80186 states have (on average 1.114072281944479) internal successors, (89333), 80186 states have internal predecessors, (89333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80187 states to 80187 states and 89333 transitions. [2023-12-15 19:09:17,215 INFO L78 Accepts]: Start accepts. Automaton has 80187 states and 89333 transitions. Word has length 474 [2023-12-15 19:09:17,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:17,216 INFO L495 AbstractCegarLoop]: Abstraction has 80187 states and 89333 transitions. [2023-12-15 19:09:17,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:17,216 INFO L276 IsEmpty]: Start isEmpty. Operand 80187 states and 89333 transitions. [2023-12-15 19:09:17,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-12-15 19:09:17,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:17,229 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:17,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 19:09:17,229 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:17,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:17,229 INFO L85 PathProgramCache]: Analyzing trace with hash -2132374493, now seen corresponding path program 1 times [2023-12-15 19:09:17,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:17,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883444805] [2023-12-15 19:09:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:17,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:09:17,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:17,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883444805] [2023-12-15 19:09:17,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883444805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:17,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:17,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:09:17,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513988613] [2023-12-15 19:09:17,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:17,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:09:17,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:17,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:09:17,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:17,871 INFO L87 Difference]: Start difference. First operand 80187 states and 89333 transitions. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:19,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:19,598 INFO L93 Difference]: Finished difference Result 169335 states and 188802 transitions. [2023-12-15 19:09:19,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:09:19,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 541 [2023-12-15 19:09:19,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:19,703 INFO L225 Difference]: With dead ends: 169335 [2023-12-15 19:09:19,703 INFO L226 Difference]: Without dead ends: 89149 [2023-12-15 19:09:19,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:19,866 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 412 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:19,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 228 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:09:19,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89149 states. [2023-12-15 19:09:20,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89149 to 89140. [2023-12-15 19:09:20,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89140 states, 89139 states have (on average 1.1107596001750075) internal successors, (99012), 89139 states have internal predecessors, (99012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:20,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89140 states to 89140 states and 99012 transitions. [2023-12-15 19:09:20,994 INFO L78 Accepts]: Start accepts. Automaton has 89140 states and 99012 transitions. Word has length 541 [2023-12-15 19:09:20,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:20,995 INFO L495 AbstractCegarLoop]: Abstraction has 89140 states and 99012 transitions. [2023-12-15 19:09:20,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:20,995 INFO L276 IsEmpty]: Start isEmpty. Operand 89140 states and 99012 transitions. [2023-12-15 19:09:21,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2023-12-15 19:09:21,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:21,010 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:21,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 19:09:21,010 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:21,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:21,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1133312665, now seen corresponding path program 1 times [2023-12-15 19:09:21,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:21,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045034117] [2023-12-15 19:09:21,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:21,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2023-12-15 19:09:21,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:21,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045034117] [2023-12-15 19:09:21,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045034117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:21,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:21,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:09:21,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31324548] [2023-12-15 19:09:21,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:21,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:09:21,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:21,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:09:21,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:21,328 INFO L87 Difference]: Start difference. First operand 89140 states and 99012 transitions. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:23,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:23,083 INFO L93 Difference]: Finished difference Result 195722 states and 216956 transitions. [2023-12-15 19:09:23,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:09:23,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 543 [2023-12-15 19:09:23,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:23,404 INFO L225 Difference]: With dead ends: 195722 [2023-12-15 19:09:23,405 INFO L226 Difference]: Without dead ends: 107008 [2023-12-15 19:09:23,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:23,444 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 485 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:23,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 641 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:09:23,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107008 states. [2023-12-15 19:09:24,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107008 to 106997. [2023-12-15 19:09:24,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106997 states, 106996 states have (on average 1.0891622116714643) internal successors, (116536), 106996 states have internal predecessors, (116536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:24,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106997 states to 106997 states and 116536 transitions. [2023-12-15 19:09:24,952 INFO L78 Accepts]: Start accepts. Automaton has 106997 states and 116536 transitions. Word has length 543 [2023-12-15 19:09:24,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:24,952 INFO L495 AbstractCegarLoop]: Abstraction has 106997 states and 116536 transitions. [2023-12-15 19:09:24,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:24,952 INFO L276 IsEmpty]: Start isEmpty. Operand 106997 states and 116536 transitions. [2023-12-15 19:09:24,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2023-12-15 19:09:24,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:24,970 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:24,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 19:09:24,970 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:24,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:24,970 INFO L85 PathProgramCache]: Analyzing trace with hash -63852057, now seen corresponding path program 1 times [2023-12-15 19:09:24,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:24,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908884171] [2023-12-15 19:09:24,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:24,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:26,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 493 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2023-12-15 19:09:26,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:26,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908884171] [2023-12-15 19:09:26,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908884171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:26,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:26,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:09:26,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605912958] [2023-12-15 19:09:26,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:26,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:09:26,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:26,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:09:26,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:09:26,135 INFO L87 Difference]: Start difference. First operand 106997 states and 116536 transitions. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 19:09:28,561 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 19:09:28,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:09:28,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:09:28,562 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 792 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 2192 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 2449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:28,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 106 Invalid, 2449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2192 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 19:09:28,563 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:09:28,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 19:09:28,565 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (106997states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (43161 states constructed, input type IntersectNwa). [2023-12-15 19:09:28,567 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:28,569 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:09:28,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:09:28 BoogieIcfgContainer [2023-12-15 19:09:28,570 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:09:28,570 INFO L158 Benchmark]: Toolchain (without parser) took 59333.77ms. Allocated memory was 164.6MB in the beginning and 5.6GB in the end (delta: 5.5GB). Free memory was 109.0MB in the beginning and 4.1GB in the end (delta: -4.0GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-15 19:09:28,571 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 164.6MB. Free memory is still 120.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:09:28,571 INFO L158 Benchmark]: CACSL2BoogieTranslator took 885.74ms. Allocated memory was 164.6MB in the beginning and 218.1MB in the end (delta: 53.5MB). Free memory was 109.0MB in the beginning and 148.3MB in the end (delta: -39.3MB). Peak memory consumption was 58.0MB. Max. memory is 8.0GB. [2023-12-15 19:09:28,571 INFO L158 Benchmark]: Boogie Procedure Inliner took 261.79ms. Allocated memory is still 218.1MB. Free memory was 148.3MB in the beginning and 130.9MB in the end (delta: 17.5MB). Peak memory consumption was 76.2MB. Max. memory is 8.0GB. [2023-12-15 19:09:28,571 INFO L158 Benchmark]: Boogie Preprocessor took 404.71ms. Allocated memory was 218.1MB in the beginning and 369.1MB in the end (delta: 151.0MB). Free memory was 130.9MB in the beginning and 237.3MB in the end (delta: -106.4MB). Peak memory consumption was 58.2MB. Max. memory is 8.0GB. [2023-12-15 19:09:28,571 INFO L158 Benchmark]: RCFGBuilder took 2862.68ms. Allocated memory is still 369.1MB. Free memory was 237.3MB in the beginning and 129.1MB in the end (delta: 108.2MB). Peak memory consumption was 129.3MB. Max. memory is 8.0GB. [2023-12-15 19:09:28,571 INFO L158 Benchmark]: TraceAbstraction took 54911.82ms. Allocated memory was 369.1MB in the beginning and 5.6GB in the end (delta: 5.3GB). Free memory was 128.6MB in the beginning and 4.1GB in the end (delta: -4.0GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-15 19:09:28,572 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 164.6MB. Free memory is still 120.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 885.74ms. Allocated memory was 164.6MB in the beginning and 218.1MB in the end (delta: 53.5MB). Free memory was 109.0MB in the beginning and 148.3MB in the end (delta: -39.3MB). Peak memory consumption was 58.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 261.79ms. Allocated memory is still 218.1MB. Free memory was 148.3MB in the beginning and 130.9MB in the end (delta: 17.5MB). Peak memory consumption was 76.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 404.71ms. Allocated memory was 218.1MB in the beginning and 369.1MB in the end (delta: 151.0MB). Free memory was 130.9MB in the beginning and 237.3MB in the end (delta: -106.4MB). Peak memory consumption was 58.2MB. Max. memory is 8.0GB. * RCFGBuilder took 2862.68ms. Allocated memory is still 369.1MB. Free memory was 237.3MB in the beginning and 129.1MB in the end (delta: 108.2MB). Peak memory consumption was 129.3MB. Max. memory is 8.0GB. * TraceAbstraction took 54911.82ms. Allocated memory was 369.1MB in the beginning and 5.6GB in the end (delta: 5.3GB). Free memory was 128.6MB in the beginning and 4.1GB in the end (delta: -4.0GB). Peak memory consumption was 1.3GB. 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: 108]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 108). Cancelled while NwaCegarLoop was constructing difference of abstraction (106997states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (43161 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 528 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 54.9s, OverallIterations: 17, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 39.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15423 SdHoareTripleChecker+Valid, 35.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15423 mSDsluCounter, 8445 SdHoareTripleChecker+Invalid, 29.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1221 mSDsCounter, 6639 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32551 IncrementalHoareTripleChecker+Invalid, 39190 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6639 mSolverCounterUnsat, 7224 mSDtfsCounter, 32551 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1620 GetRequests, 1582 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106997occurred in iteration=16, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 15492 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 5507 NumberOfCodeBlocks, 5507 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 6269 ConstructedInterpolants, 0 QuantifiedInterpolants, 17873 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1034 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 21 InterpolantComputations, 16 PerfectInterpolantSequences, 5152/5633 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