/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 01:56:08,657 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 01:56:08,711 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 01:56:08,715 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 01:56:08,715 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 01:56:08,733 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 01:56:08,734 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 01:56:08,734 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 01:56:08,735 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 01:56:08,735 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 01:56:08,735 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 01:56:08,736 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 01:56:08,736 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 01:56:08,736 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 01:56:08,737 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 01:56:08,737 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 01:56:08,737 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 01:56:08,738 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 01:56:08,738 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 01:56:08,738 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 01:56:08,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 01:56:08,742 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 01:56:08,743 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 01:56:08,743 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 01:56:08,746 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 01:56:08,746 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 01:56:08,746 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 01:56:08,747 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 01:56:08,748 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 01:56:08,748 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 01:56:08,749 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 01:56:08,749 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 01:56:08,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:56:08,750 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 01:56:08,750 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 01:56:08,750 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 01:56:08,750 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 01:56:08,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 01:56:08,750 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 01:56:08,750 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 01:56:08,751 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 01:56:08,751 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 01:56:08,751 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 01:56:08,751 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 01:56:08,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 01:56:09,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 01:56:09,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 01:56:09,003 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 01:56:09,004 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 01:56:09,005 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label53.c [2023-12-16 01:56:10,221 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 01:56:10,638 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 01:56:10,639 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label53.c [2023-12-16 01:56:10,670 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efac09c3c/afe74057e45e4b06991a7de65073b3f1/FLAG4b95538d1 [2023-12-16 01:56:10,685 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efac09c3c/afe74057e45e4b06991a7de65073b3f1 [2023-12-16 01:56:10,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 01:56:10,689 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 01:56:10,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 01:56:10,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 01:56:10,697 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 01:56:10,698 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:56:10" (1/1) ... [2023-12-16 01:56:10,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7692e646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:10, skipping insertion in model container [2023-12-16 01:56:10,699 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:56:10" (1/1) ... [2023-12-16 01:56:10,812 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 01:56:11,006 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label53.c[4245,4258] [2023-12-16 01:56:11,799 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:56:11,809 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 01:56:11,830 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label53.c[4245,4258] [2023-12-16 01:56:12,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:56:12,258 INFO L206 MainTranslator]: Completed translation [2023-12-16 01:56:12,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:12 WrapperNode [2023-12-16 01:56:12,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 01:56:12,260 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 01:56:12,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 01:56:12,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 01:56:12,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:12" (1/1) ... [2023-12-16 01:56:12,317 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:12" (1/1) ... [2023-12-16 01:56:12,538 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2023-12-16 01:56:12,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 01:56:12,540 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 01:56:12,540 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 01:56:12,540 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 01:56:12,550 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:12" (1/1) ... [2023-12-16 01:56:12,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:12" (1/1) ... [2023-12-16 01:56:12,614 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:12" (1/1) ... [2023-12-16 01:56:12,816 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]. [2023-12-16 01:56:12,816 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:12" (1/1) ... [2023-12-16 01:56:12,817 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:12" (1/1) ... [2023-12-16 01:56:12,937 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:12" (1/1) ... [2023-12-16 01:56:12,966 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:12" (1/1) ... [2023-12-16 01:56:12,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:12" (1/1) ... [2023-12-16 01:56:13,006 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:12" (1/1) ... [2023-12-16 01:56:13,139 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 01:56:13,141 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 01:56:13,141 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 01:56:13,141 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 01:56:13,142 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:12" (1/1) ... [2023-12-16 01:56:13,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:56:13,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:56:13,173 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) [2023-12-16 01:56:13,203 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 [2023-12-16 01:56:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 01:56:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 01:56:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 01:56:13,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 01:56:13,276 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 01:56:13,279 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 01:56:16,989 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 01:56:17,033 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 01:56:17,033 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 01:56:17,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:56:17 BoogieIcfgContainer [2023-12-16 01:56:17,034 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 01:56:17,036 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 01:56:17,036 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 01:56:17,039 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 01:56:17,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:56:10" (1/3) ... [2023-12-16 01:56:17,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f23e369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:56:17, skipping insertion in model container [2023-12-16 01:56:17,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:12" (2/3) ... [2023-12-16 01:56:17,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f23e369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:56:17, skipping insertion in model container [2023-12-16 01:56:17,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:56:17" (3/3) ... [2023-12-16 01:56:17,041 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label53.c [2023-12-16 01:56:17,056 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 01:56:17,056 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 01:56:17,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 01:56:17,114 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;@75d044b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 01:56:17,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 01:56:17,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:17,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 01:56:17,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:56:17,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:56:17,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:56:17,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:56:17,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1513654017, now seen corresponding path program 1 times [2023-12-16 01:56:17,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:56:17,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309627907] [2023-12-16 01:56:17,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:17,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:56:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:56:17,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:56:17,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309627907] [2023-12-16 01:56:17,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309627907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:56:17,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:56:17,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:56:17,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156870983] [2023-12-16 01:56:17,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:56:17,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 01:56:17,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:56:17,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 01:56:17,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 01:56:17,366 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:17,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:56:17,467 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2023-12-16 01:56:17,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 01:56:17,472 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-16 01:56:17,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:56:17,491 INFO L225 Difference]: With dead ends: 1511 [2023-12-16 01:56:17,491 INFO L226 Difference]: Without dead ends: 754 [2023-12-16 01:56:17,499 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 [2023-12-16 01:56:17,502 INFO L413 NwaCegarLoop]: 1438 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:56:17,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:56:17,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-12-16 01:56:17,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-12-16 01:56:17,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:17,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2023-12-16 01:56:17,581 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 31 [2023-12-16 01:56:17,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:56:17,581 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2023-12-16 01:56:17,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:17,581 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2023-12-16 01:56:17,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 01:56:17,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:56:17,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:56:17,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 01:56:17,583 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:56:17,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:56:17,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1271121937, now seen corresponding path program 1 times [2023-12-16 01:56:17,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:56:17,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897738859] [2023-12-16 01:56:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:17,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:56:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:56:17,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:56:17,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897738859] [2023-12-16 01:56:17,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897738859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:56:17,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:56:17,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:56:17,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488835127] [2023-12-16 01:56:17,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:56:17,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:56:17,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:56:17,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:56:17,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:56:17,762 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:23,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:56:23,031 INFO L93 Difference]: Finished difference Result 3017 states and 5755 transitions. [2023-12-16 01:56:23,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 01:56:23,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-16 01:56:23,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:56:23,047 INFO L225 Difference]: With dead ends: 3017 [2023-12-16 01:56:23,048 INFO L226 Difference]: Without dead ends: 2264 [2023-12-16 01:56:23,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:56:23,051 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 2379 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3613 mSolverCounterSat, 1596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2379 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 5209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1596 IncrementalHoareTripleChecker+Valid, 3613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:56:23,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2379 Valid, 197 Invalid, 5209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1596 Valid, 3613 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-16 01:56:23,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2023-12-16 01:56:23,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 2256. [2023-12-16 01:56:23,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 1.5352549889135254) internal successors, (3462), 2255 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:23,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 3462 transitions. [2023-12-16 01:56:23,115 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 3462 transitions. Word has length 31 [2023-12-16 01:56:23,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:56:23,116 INFO L495 AbstractCegarLoop]: Abstraction has 2256 states and 3462 transitions. [2023-12-16 01:56:23,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:23,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 3462 transitions. [2023-12-16 01:56:23,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-16 01:56:23,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:56:23,124 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:56:23,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 01:56:23,124 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:56:23,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:56:23,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1517281398, now seen corresponding path program 1 times [2023-12-16 01:56:23,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:56:23,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866984940] [2023-12-16 01:56:23,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:23,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:56:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:23,601 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:56:23,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:56:23,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866984940] [2023-12-16 01:56:23,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866984940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:56:23,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:56:23,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:56:23,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474346486] [2023-12-16 01:56:23,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:56:23,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:56:23,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:56:23,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:56:23,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:56:23,604 INFO L87 Difference]: Start difference. First operand 2256 states and 3462 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:27,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:56:27,533 INFO L93 Difference]: Finished difference Result 6050 states and 9663 transitions. [2023-12-16 01:56:27,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:56:27,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2023-12-16 01:56:27,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:56:27,548 INFO L225 Difference]: With dead ends: 6050 [2023-12-16 01:56:27,548 INFO L226 Difference]: Without dead ends: 3758 [2023-12-16 01:56:27,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:56:27,553 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 688 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3805 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 4469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:56:27,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 709 Invalid, 4469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3805 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-16 01:56:27,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2023-12-16 01:56:27,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3758. [2023-12-16 01:56:27,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3758 states, 3757 states have (on average 1.340963534735161) internal successors, (5038), 3757 states have internal predecessors, (5038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:27,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 5038 transitions. [2023-12-16 01:56:27,622 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 5038 transitions. Word has length 171 [2023-12-16 01:56:27,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:56:27,623 INFO L495 AbstractCegarLoop]: Abstraction has 3758 states and 5038 transitions. [2023-12-16 01:56:27,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:27,624 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 5038 transitions. [2023-12-16 01:56:27,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-16 01:56:27,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:56:27,628 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:56:27,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 01:56:27,628 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:56:27,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:56:27,629 INFO L85 PathProgramCache]: Analyzing trace with hash 189497605, now seen corresponding path program 1 times [2023-12-16 01:56:27,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:56:27,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511260857] [2023-12-16 01:56:27,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:27,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:56:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-16 01:56:28,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:56:28,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511260857] [2023-12-16 01:56:28,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511260857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:56:28,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:56:28,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:56:28,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105208159] [2023-12-16 01:56:28,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:56:28,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:56:28,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:56:28,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:56:28,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:56:28,036 INFO L87 Difference]: Start difference. First operand 3758 states and 5038 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:30,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:56:30,649 INFO L93 Difference]: Finished difference Result 10519 states and 14355 transitions. [2023-12-16 01:56:30,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:56:30,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 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 241 [2023-12-16 01:56:30,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:56:30,677 INFO L225 Difference]: With dead ends: 10519 [2023-12-16 01:56:30,678 INFO L226 Difference]: Without dead ends: 6762 [2023-12-16 01:56:30,688 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 [2023-12-16 01:56:30,696 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 669 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 845 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 2835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 845 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:56:30,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 484 Invalid, 2835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [845 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 01:56:30,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6762 states. [2023-12-16 01:56:30,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 6011. [2023-12-16 01:56:30,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6011 states, 6010 states have (on average 1.2815307820299502) internal successors, (7702), 6010 states have internal predecessors, (7702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:30,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6011 states to 6011 states and 7702 transitions. [2023-12-16 01:56:30,819 INFO L78 Accepts]: Start accepts. Automaton has 6011 states and 7702 transitions. Word has length 241 [2023-12-16 01:56:30,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:56:30,822 INFO L495 AbstractCegarLoop]: Abstraction has 6011 states and 7702 transitions. [2023-12-16 01:56:30,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:30,822 INFO L276 IsEmpty]: Start isEmpty. Operand 6011 states and 7702 transitions. [2023-12-16 01:56:30,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-16 01:56:30,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:56:30,825 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:56:30,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 01:56:30,826 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:56:30,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:56:30,827 INFO L85 PathProgramCache]: Analyzing trace with hash -2063435038, now seen corresponding path program 1 times [2023-12-16 01:56:30,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:56:30,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156673816] [2023-12-16 01:56:30,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:30,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:56:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 59 proven. 54 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-16 01:56:31,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:56:31,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156673816] [2023-12-16 01:56:31,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156673816] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:56:31,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663892275] [2023-12-16 01:56:31,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:31,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:56:31,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:56:31,248 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) [2023-12-16 01:56:31,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 01:56:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:31,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:56:31,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:56:31,607 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:56:31,607 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:56:31,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663892275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:56:31,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:56:31,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 01:56:31,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770073736] [2023-12-16 01:56:31,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:56:31,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:56:31,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:56:31,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:56:31,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:56:31,611 INFO L87 Difference]: Start difference. First operand 6011 states and 7702 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:34,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:56:34,448 INFO L93 Difference]: Finished difference Result 15025 states and 19933 transitions. [2023-12-16 01:56:34,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:56:34,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 254 [2023-12-16 01:56:34,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:56:34,478 INFO L225 Difference]: With dead ends: 15025 [2023-12-16 01:56:34,478 INFO L226 Difference]: Without dead ends: 9015 [2023-12-16 01:56:34,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:56:34,487 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 907 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:56:34,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 307 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-16 01:56:34,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9015 states. [2023-12-16 01:56:34,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9015 to 9015. [2023-12-16 01:56:34,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9015 states, 9014 states have (on average 1.265808741956956) internal successors, (11410), 9014 states have internal predecessors, (11410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:34,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9015 states to 9015 states and 11410 transitions. [2023-12-16 01:56:34,631 INFO L78 Accepts]: Start accepts. Automaton has 9015 states and 11410 transitions. Word has length 254 [2023-12-16 01:56:34,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:56:34,632 INFO L495 AbstractCegarLoop]: Abstraction has 9015 states and 11410 transitions. [2023-12-16 01:56:34,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:34,633 INFO L276 IsEmpty]: Start isEmpty. Operand 9015 states and 11410 transitions. [2023-12-16 01:56:34,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-16 01:56:34,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:56:34,636 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:56:34,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 01:56:34,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:56:34,841 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:56:34,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:56:34,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1927195130, now seen corresponding path program 1 times [2023-12-16 01:56:34,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:56:34,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363955457] [2023-12-16 01:56:34,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:34,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:56:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-16 01:56:35,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:56:35,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363955457] [2023-12-16 01:56:35,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363955457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:56:35,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:56:35,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:56:35,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270267120] [2023-12-16 01:56:35,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:56:35,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:56:35,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:56:35,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:56:35,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:56:35,087 INFO L87 Difference]: Start difference. First operand 9015 states and 11410 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:37,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:56:37,933 INFO L93 Difference]: Finished difference Result 21784 states and 27826 transitions. [2023-12-16 01:56:37,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:56:37,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 271 [2023-12-16 01:56:37,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:56:37,971 INFO L225 Difference]: With dead ends: 21784 [2023-12-16 01:56:37,972 INFO L226 Difference]: Without dead ends: 12770 [2023-12-16 01:56:37,983 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 [2023-12-16 01:56:37,984 INFO L413 NwaCegarLoop]: 1206 mSDtfsCounter, 743 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:56:37,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 1213 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-16 01:56:37,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12770 states. [2023-12-16 01:56:38,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12770 to 12770. [2023-12-16 01:56:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12770 states, 12769 states have (on average 1.1838828412561673) internal successors, (15117), 12769 states have internal predecessors, (15117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:38,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12770 states to 12770 states and 15117 transitions. [2023-12-16 01:56:38,169 INFO L78 Accepts]: Start accepts. Automaton has 12770 states and 15117 transitions. Word has length 271 [2023-12-16 01:56:38,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:56:38,170 INFO L495 AbstractCegarLoop]: Abstraction has 12770 states and 15117 transitions. [2023-12-16 01:56:38,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:38,170 INFO L276 IsEmpty]: Start isEmpty. Operand 12770 states and 15117 transitions. [2023-12-16 01:56:38,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-16 01:56:38,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:56:38,175 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:56:38,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 01:56:38,175 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:56:38,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:56:38,176 INFO L85 PathProgramCache]: Analyzing trace with hash 889864267, now seen corresponding path program 1 times [2023-12-16 01:56:38,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:56:38,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808258093] [2023-12-16 01:56:38,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:38,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:56:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:38,448 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 01:56:38,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:56:38,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808258093] [2023-12-16 01:56:38,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808258093] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:56:38,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:56:38,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:56:38,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710613891] [2023-12-16 01:56:38,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:56:38,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:56:38,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:56:38,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:56:38,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:56:38,462 INFO L87 Difference]: Start difference. First operand 12770 states and 15117 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:41,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:56:41,389 INFO L93 Difference]: Finished difference Result 36053 states and 43061 transitions. [2023-12-16 01:56:41,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:56:41,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 358 [2023-12-16 01:56:41,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:56:41,431 INFO L225 Difference]: With dead ends: 36053 [2023-12-16 01:56:41,431 INFO L226 Difference]: Without dead ends: 23284 [2023-12-16 01:56:41,444 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 [2023-12-16 01:56:41,445 INFO L413 NwaCegarLoop]: 1213 mSDtfsCounter, 639 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2608 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 3005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 2608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:56:41,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 1220 Invalid, 3005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 2608 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-16 01:56:41,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23284 states. [2023-12-16 01:56:41,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23284 to 22533. [2023-12-16 01:56:41,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22533 states, 22532 states have (on average 1.172022013136872) internal successors, (26408), 22532 states have internal predecessors, (26408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:41,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22533 states to 22533 states and 26408 transitions. [2023-12-16 01:56:41,740 INFO L78 Accepts]: Start accepts. Automaton has 22533 states and 26408 transitions. Word has length 358 [2023-12-16 01:56:41,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:56:41,741 INFO L495 AbstractCegarLoop]: Abstraction has 22533 states and 26408 transitions. [2023-12-16 01:56:41,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:41,741 INFO L276 IsEmpty]: Start isEmpty. Operand 22533 states and 26408 transitions. [2023-12-16 01:56:41,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-12-16 01:56:41,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:56:41,748 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:56:41,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 01:56:41,749 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:56:41,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:56:41,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1647964481, now seen corresponding path program 1 times [2023-12-16 01:56:41,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:56:41,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389778163] [2023-12-16 01:56:41,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:41,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:56:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:42,261 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-16 01:56:42,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:56:42,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389778163] [2023-12-16 01:56:42,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389778163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:56:42,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:56:42,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:56:42,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122871455] [2023-12-16 01:56:42,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:56:42,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:56:42,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:56:42,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:56:42,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:56:42,264 INFO L87 Difference]: Start difference. First operand 22533 states and 26408 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:44,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:56:44,822 INFO L93 Difference]: Finished difference Result 51073 states and 59607 transitions. [2023-12-16 01:56:44,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:56:44,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 362 [2023-12-16 01:56:44,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:56:44,880 INFO L225 Difference]: With dead ends: 51073 [2023-12-16 01:56:44,880 INFO L226 Difference]: Without dead ends: 28541 [2023-12-16 01:56:44,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:56:44,905 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 808 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:56:44,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 966 Invalid, 2719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-16 01:56:44,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28541 states. [2023-12-16 01:56:45,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28541 to 27039. [2023-12-16 01:56:45,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27039 states, 27038 states have (on average 1.1447222427694357) internal successors, (30951), 27038 states have internal predecessors, (30951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:45,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27039 states to 27039 states and 30951 transitions. [2023-12-16 01:56:45,241 INFO L78 Accepts]: Start accepts. Automaton has 27039 states and 30951 transitions. Word has length 362 [2023-12-16 01:56:45,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:56:45,242 INFO L495 AbstractCegarLoop]: Abstraction has 27039 states and 30951 transitions. [2023-12-16 01:56:45,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:45,242 INFO L276 IsEmpty]: Start isEmpty. Operand 27039 states and 30951 transitions. [2023-12-16 01:56:45,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2023-12-16 01:56:45,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:56:45,253 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:56:45,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 01:56:45,254 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:56:45,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:56:45,255 INFO L85 PathProgramCache]: Analyzing trace with hash -335653556, now seen corresponding path program 1 times [2023-12-16 01:56:45,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:56:45,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398704757] [2023-12-16 01:56:45,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:45,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:56:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 502 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-12-16 01:56:45,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:56:45,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398704757] [2023-12-16 01:56:45,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398704757] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:56:45,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:56:45,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:56:45,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737976445] [2023-12-16 01:56:45,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:56:45,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:56:45,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:56:45,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:56:45,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:56:45,548 INFO L87 Difference]: Start difference. First operand 27039 states and 30951 transitions. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:48,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:56:48,514 INFO L93 Difference]: Finished difference Result 54828 states and 62658 transitions. [2023-12-16 01:56:48,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:56:48,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 464 [2023-12-16 01:56:48,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:56:48,563 INFO L225 Difference]: With dead ends: 54828 [2023-12-16 01:56:48,563 INFO L226 Difference]: Without dead ends: 27790 [2023-12-16 01:56:48,587 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 [2023-12-16 01:56:48,590 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 662 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:56:48,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 267 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2286 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-16 01:56:48,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27790 states. [2023-12-16 01:56:48,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27790 to 27039. [2023-12-16 01:56:48,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27039 states, 27038 states have (on average 1.1338486574450772) internal successors, (30657), 27038 states have internal predecessors, (30657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:48,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27039 states to 27039 states and 30657 transitions. [2023-12-16 01:56:48,952 INFO L78 Accepts]: Start accepts. Automaton has 27039 states and 30657 transitions. Word has length 464 [2023-12-16 01:56:48,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:56:48,953 INFO L495 AbstractCegarLoop]: Abstraction has 27039 states and 30657 transitions. [2023-12-16 01:56:48,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:48,953 INFO L276 IsEmpty]: Start isEmpty. Operand 27039 states and 30657 transitions. [2023-12-16 01:56:48,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-12-16 01:56:48,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:56:48,965 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:56:48,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 01:56:48,966 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:56:48,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:56:48,966 INFO L85 PathProgramCache]: Analyzing trace with hash -381073494, now seen corresponding path program 1 times [2023-12-16 01:56:48,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:56:48,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138930685] [2023-12-16 01:56:48,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:48,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:56:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:49,687 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 324 proven. 230 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-16 01:56:49,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:56:49,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138930685] [2023-12-16 01:56:49,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138930685] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:56:49,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873033596] [2023-12-16 01:56:49,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:49,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:56:49,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:56:49,689 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) [2023-12-16 01:56:49,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 01:56:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:49,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:56:49,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:56:50,057 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 513 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-16 01:56:50,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:56:50,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873033596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:56:50,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:56:50,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-12-16 01:56:50,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361509069] [2023-12-16 01:56:50,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:56:50,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:56:50,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:56:50,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:56:50,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:56:50,060 INFO L87 Difference]: Start difference. First operand 27039 states and 30657 transitions. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:53,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:56:53,108 INFO L93 Difference]: Finished difference Result 72101 states and 82463 transitions. [2023-12-16 01:56:53,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:56:53,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 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 475 [2023-12-16 01:56:53,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:56:53,164 INFO L225 Difference]: With dead ends: 72101 [2023-12-16 01:56:53,164 INFO L226 Difference]: Without dead ends: 45063 [2023-12-16 01:56:53,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:56:53,191 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 665 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 3055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:56:53,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1050 Invalid, 3055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-16 01:56:53,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45063 states. [2023-12-16 01:56:53,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45063 to 45063. [2023-12-16 01:56:53,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45063 states, 45062 states have (on average 1.141294216856775) internal successors, (51429), 45062 states have internal predecessors, (51429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:53,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45063 states to 45063 states and 51429 transitions. [2023-12-16 01:56:53,749 INFO L78 Accepts]: Start accepts. Automaton has 45063 states and 51429 transitions. Word has length 475 [2023-12-16 01:56:53,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:56:53,750 INFO L495 AbstractCegarLoop]: Abstraction has 45063 states and 51429 transitions. [2023-12-16 01:56:53,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:53,750 INFO L276 IsEmpty]: Start isEmpty. Operand 45063 states and 51429 transitions. [2023-12-16 01:56:53,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2023-12-16 01:56:53,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:56:53,767 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:56:53,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 01:56:53,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 01:56:53,975 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:56:53,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:56:53,975 INFO L85 PathProgramCache]: Analyzing trace with hash -871050562, now seen corresponding path program 1 times [2023-12-16 01:56:53,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:56:53,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445175886] [2023-12-16 01:56:53,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:53,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:56:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:54,555 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 522 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-12-16 01:56:54,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:56:54,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445175886] [2023-12-16 01:56:54,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445175886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:56:54,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:56:54,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:56:54,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772768054] [2023-12-16 01:56:54,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:56:54,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:56:54,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:56:54,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:56:54,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:56:54,558 INFO L87 Difference]: Start difference. First operand 45063 states and 51429 transitions. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:57,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:56:57,380 INFO L93 Difference]: Finished difference Result 107398 states and 121875 transitions. [2023-12-16 01:56:57,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:56:57,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 484 [2023-12-16 01:56:57,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:56:57,473 INFO L225 Difference]: With dead ends: 107398 [2023-12-16 01:56:57,474 INFO L226 Difference]: Without dead ends: 61585 [2023-12-16 01:56:57,509 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 [2023-12-16 01:56:57,510 INFO L413 NwaCegarLoop]: 1065 mSDtfsCounter, 732 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 2768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:56:57,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 1071 Invalid, 2768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 01:56:57,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61585 states. [2023-12-16 01:56:58,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61585 to 55577. [2023-12-16 01:56:58,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55577 states, 55576 states have (on average 1.1048294227724198) internal successors, (61402), 55576 states have internal predecessors, (61402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:58,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55577 states to 55577 states and 61402 transitions. [2023-12-16 01:56:58,264 INFO L78 Accepts]: Start accepts. Automaton has 55577 states and 61402 transitions. Word has length 484 [2023-12-16 01:56:58,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:56:58,265 INFO L495 AbstractCegarLoop]: Abstraction has 55577 states and 61402 transitions. [2023-12-16 01:56:58,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:56:58,265 INFO L276 IsEmpty]: Start isEmpty. Operand 55577 states and 61402 transitions. [2023-12-16 01:56:58,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-12-16 01:56:58,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:56:58,281 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:56:58,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 01:56:58,283 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:56:58,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:56:58,283 INFO L85 PathProgramCache]: Analyzing trace with hash -438162808, now seen corresponding path program 1 times [2023-12-16 01:56:58,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:56:58,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074045829] [2023-12-16 01:56:58,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:56:58,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:56:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:56:58,635 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 521 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-16 01:56:58,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:56:58,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074045829] [2023-12-16 01:56:58,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074045829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:56:58,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:56:58,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:56:58,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683368194] [2023-12-16 01:56:58,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:56:58,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:56:58,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:56:58,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:56:58,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:56:58,638 INFO L87 Difference]: Start difference. First operand 55577 states and 61402 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:02,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:57:02,184 INFO L93 Difference]: Finished difference Result 144197 states and 159787 transitions. [2023-12-16 01:57:02,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:57:02,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 535 [2023-12-16 01:57:02,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:57:02,291 INFO L225 Difference]: With dead ends: 144197 [2023-12-16 01:57:02,292 INFO L226 Difference]: Without dead ends: 89372 [2023-12-16 01:57:02,323 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 [2023-12-16 01:57:02,324 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 616 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:57:02,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 459 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2267 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-16 01:57:02,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89372 states. [2023-12-16 01:57:03,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89372 to 87119. [2023-12-16 01:57:03,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87119 states, 87118 states have (on average 1.090429073211047) internal successors, (94996), 87118 states have internal predecessors, (94996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:03,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87119 states to 87119 states and 94996 transitions. [2023-12-16 01:57:03,545 INFO L78 Accepts]: Start accepts. Automaton has 87119 states and 94996 transitions. Word has length 535 [2023-12-16 01:57:03,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:57:03,546 INFO L495 AbstractCegarLoop]: Abstraction has 87119 states and 94996 transitions. [2023-12-16 01:57:03,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:57:03,546 INFO L276 IsEmpty]: Start isEmpty. Operand 87119 states and 94996 transitions. [2023-12-16 01:57:03,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2023-12-16 01:57:03,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:57:03,568 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:57:03,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 01:57:03,569 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:57:03,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:57:03,569 INFO L85 PathProgramCache]: Analyzing trace with hash -956497100, now seen corresponding path program 1 times [2023-12-16 01:57:03,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:57:03,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108748542] [2023-12-16 01:57:03,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:57:03,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:57:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-12-16 01:57:03,934 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 [2023-12-16 01:57:03,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 01:57:03,957 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Termination requested (timeout or resource limit) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:304) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:869) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:793) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-16 01:57:03,964 INFO L158 Benchmark]: Toolchain (without parser) took 53275.17ms. Allocated memory was 291.5MB in the beginning and 2.8GB in the end (delta: 2.5GB). Free memory was 229.9MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 878.5MB. Max. memory is 8.0GB. [2023-12-16 01:57:03,964 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 198.2MB. Free memory is still 151.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 01:57:03,964 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1567.08ms. Allocated memory is still 291.5MB. Free memory was 229.6MB in the beginning and 207.0MB in the end (delta: 22.5MB). Peak memory consumption was 89.7MB. Max. memory is 8.0GB. [2023-12-16 01:57:03,964 INFO L158 Benchmark]: Boogie Procedure Inliner took 279.26ms. Allocated memory is still 291.5MB. Free memory was 206.6MB in the beginning and 134.2MB in the end (delta: 72.4MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. [2023-12-16 01:57:03,965 INFO L158 Benchmark]: Boogie Preprocessor took 599.45ms. Allocated memory was 291.5MB in the beginning and 512.8MB in the end (delta: 221.2MB). Free memory was 134.2MB in the beginning and 395.8MB in the end (delta: -261.6MB). Peak memory consumption was 77.3MB. Max. memory is 8.0GB. [2023-12-16 01:57:03,965 INFO L158 Benchmark]: RCFGBuilder took 3893.45ms. Allocated memory was 512.8MB in the beginning and 792.7MB in the end (delta: 280.0MB). Free memory was 395.8MB in the beginning and 634.7MB in the end (delta: -238.9MB). Peak memory consumption was 275.8MB. Max. memory is 8.0GB. [2023-12-16 01:57:03,965 INFO L158 Benchmark]: TraceAbstraction took 46927.26ms. Allocated memory was 792.7MB in the beginning and 2.8GB in the end (delta: 2.0GB). Free memory was 634.2MB in the beginning and 1.9GB in the end (delta: -1.2GB). Peak memory consumption was 780.7MB. Max. memory is 8.0GB. [2023-12-16 01:57:03,967 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 198.2MB. Free memory is still 151.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1567.08ms. Allocated memory is still 291.5MB. Free memory was 229.6MB in the beginning and 207.0MB in the end (delta: 22.5MB). Peak memory consumption was 89.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 279.26ms. Allocated memory is still 291.5MB. Free memory was 206.6MB in the beginning and 134.2MB in the end (delta: 72.4MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 599.45ms. Allocated memory was 291.5MB in the beginning and 512.8MB in the end (delta: 221.2MB). Free memory was 134.2MB in the beginning and 395.8MB in the end (delta: -261.6MB). Peak memory consumption was 77.3MB. Max. memory is 8.0GB. * RCFGBuilder took 3893.45ms. Allocated memory was 512.8MB in the beginning and 792.7MB in the end (delta: 280.0MB). Free memory was 395.8MB in the beginning and 634.7MB in the end (delta: -238.9MB). Peak memory consumption was 275.8MB. Max. memory is 8.0GB. * TraceAbstraction took 46927.26ms. Allocated memory was 792.7MB in the beginning and 2.8GB in the end (delta: 2.0GB). Free memory was 634.2MB in the beginning and 1.9GB in the end (delta: -1.2GB). Peak memory consumption was 780.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Termination requested (timeout or resource limit) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Termination requested (timeout or resource limit): de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:304) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown