/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/systemc/pipeline.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 00:38:43,332 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 00:38:43,396 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 00:38:43,400 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 00:38:43,400 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 00:38:43,420 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 00:38:43,420 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 00:38:43,420 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 00:38:43,421 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 00:38:43,424 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 00:38:43,424 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 00:38:43,424 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 00:38:43,424 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 00:38:43,425 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 00:38:43,425 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 00:38:43,425 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 00:38:43,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 00:38:43,426 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 00:38:43,426 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 00:38:43,426 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 00:38:43,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 00:38:43,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 00:38:43,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 00:38:43,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 00:38:43,427 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 00:38:43,427 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 00:38:43,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 00:38:43,427 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 00:38:43,427 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 00:38:43,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 00:38:43,428 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 00:38:43,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 00:38:43,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:38:43,429 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 00:38:43,429 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 00:38:43,429 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 00:38:43,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 00:38:43,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 00:38:43,429 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 00:38:43,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 00:38:43,429 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 00:38:43,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 00:38:43,430 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 00:38:43,430 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 00:38:43,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 00:38:43,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 00:38:43,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 00:38:43,641 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 00:38:43,641 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 00:38:43,642 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pipeline.cil-1.c [2023-12-20 00:38:44,588 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 00:38:44,729 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 00:38:44,730 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pipeline.cil-1.c [2023-12-20 00:38:44,741 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4d0a80b2/c2a3eeaeefce45f88d266ffc6659856a/FLAG983fe489a [2023-12-20 00:38:44,749 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4d0a80b2/c2a3eeaeefce45f88d266ffc6659856a [2023-12-20 00:38:44,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 00:38:44,751 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 00:38:44,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 00:38:44,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 00:38:44,758 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 00:38:44,758 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:38:44" (1/1) ... [2023-12-20 00:38:44,759 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f299326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:38:44, skipping insertion in model container [2023-12-20 00:38:44,759 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:38:44" (1/1) ... [2023-12-20 00:38:44,786 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 00:38:44,884 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/pipeline.cil-1.c[640,653] [2023-12-20 00:38:44,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:38:44,941 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 00:38:44,952 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/pipeline.cil-1.c[640,653] [2023-12-20 00:38:44,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:38:44,999 INFO L206 MainTranslator]: Completed translation [2023-12-20 00:38:44,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:38:44 WrapperNode [2023-12-20 00:38:44,999 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 00:38:45,000 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 00:38:45,001 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 00:38:45,001 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 00:38:45,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:38:44" (1/1) ... [2023-12-20 00:38:45,011 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:38:44" (1/1) ... [2023-12-20 00:38:45,042 INFO L138 Inliner]: procedures = 20, calls = 17, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 426 [2023-12-20 00:38:45,043 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 00:38:45,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 00:38:45,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 00:38:45,043 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 00:38:45,050 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:38:44" (1/1) ... [2023-12-20 00:38:45,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:38:44" (1/1) ... [2023-12-20 00:38:45,052 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:38:44" (1/1) ... [2023-12-20 00:38:45,062 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 00:38:45,063 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:38:44" (1/1) ... [2023-12-20 00:38:45,063 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:38:44" (1/1) ... [2023-12-20 00:38:45,067 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:38:44" (1/1) ... [2023-12-20 00:38:45,071 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:38:44" (1/1) ... [2023-12-20 00:38:45,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:38:44" (1/1) ... [2023-12-20 00:38:45,074 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:38:44" (1/1) ... [2023-12-20 00:38:45,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 00:38:45,077 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 00:38:45,077 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 00:38:45,077 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 00:38:45,078 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:38:44" (1/1) ... [2023-12-20 00:38:45,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:38:45,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:38:45,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 00:38:45,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 00:38:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 00:38:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 00:38:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2023-12-20 00:38:45,126 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2023-12-20 00:38:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 00:38:45,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 00:38:45,202 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 00:38:45,203 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 00:38:45,527 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 00:38:45,558 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 00:38:45,558 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-20 00:38:45,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:38:45 BoogieIcfgContainer [2023-12-20 00:38:45,559 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 00:38:45,560 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 00:38:45,560 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 00:38:45,562 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 00:38:45,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:38:44" (1/3) ... [2023-12-20 00:38:45,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c2b16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:38:45, skipping insertion in model container [2023-12-20 00:38:45,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:38:44" (2/3) ... [2023-12-20 00:38:45,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c2b16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:38:45, skipping insertion in model container [2023-12-20 00:38:45,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:38:45" (3/3) ... [2023-12-20 00:38:45,564 INFO L112 eAbstractionObserver]: Analyzing ICFG pipeline.cil-1.c [2023-12-20 00:38:45,590 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 00:38:45,590 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 00:38:45,619 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 00:38:45,623 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;@7fc40554, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 00:38:45,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 00:38:45,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 146 states, 140 states have (on average 1.8428571428571427) internal successors, (258), 142 states have internal predecessors, (258), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:38:45,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:38:45,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:38:45,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:38:45,637 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:38:45,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:38:45,640 INFO L85 PathProgramCache]: Analyzing trace with hash -289912864, now seen corresponding path program 1 times [2023-12-20 00:38:45,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:38:45,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586165337] [2023-12-20 00:38:45,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:45,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:38:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:46,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:38:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:46,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:38:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:46,147 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-20 00:38:46,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:38:46,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586165337] [2023-12-20 00:38:46,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586165337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:38:46,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:38:46,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:38:46,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934047098] [2023-12-20 00:38:46,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:38:46,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:38:46,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:38:46,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:38:46,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:38:46,172 INFO L87 Difference]: Start difference. First operand has 146 states, 140 states have (on average 1.8428571428571427) internal successors, (258), 142 states have internal predecessors, (258), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:46,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:38:46,881 INFO L93 Difference]: Finished difference Result 474 states and 864 transitions. [2023-12-20 00:38:46,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 00:38:46,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 92 [2023-12-20 00:38:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:38:46,897 INFO L225 Difference]: With dead ends: 474 [2023-12-20 00:38:46,897 INFO L226 Difference]: Without dead ends: 330 [2023-12-20 00:38:46,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:38:46,906 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 329 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:38:46,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 494 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 00:38:46,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-12-20 00:38:46,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 144. [2023-12-20 00:38:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.7985611510791366) internal successors, (250), 140 states have internal predecessors, (250), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:38:46,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 256 transitions. [2023-12-20 00:38:46,960 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 256 transitions. Word has length 92 [2023-12-20 00:38:46,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:38:46,961 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 256 transitions. [2023-12-20 00:38:46,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:46,961 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 256 transitions. [2023-12-20 00:38:46,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 00:38:46,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:38:46,972 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 00:38:46,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 00:38:46,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:38:46,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:38:46,973 INFO L85 PathProgramCache]: Analyzing trace with hash 682988412, now seen corresponding path program 1 times [2023-12-20 00:38:46,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:38:46,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357222034] [2023-12-20 00:38:46,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:46,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:38:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:47,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:38:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:47,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:38:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-20 00:38:47,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:38:47,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357222034] [2023-12-20 00:38:47,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357222034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:38:47,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:38:47,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 00:38:47,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836536249] [2023-12-20 00:38:47,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:38:47,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 00:38:47,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:38:47,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 00:38:47,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:38:47,341 INFO L87 Difference]: Start difference. First operand 144 states and 256 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:47,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:38:47,920 INFO L93 Difference]: Finished difference Result 532 states and 962 transitions. [2023-12-20 00:38:47,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:38:47,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2023-12-20 00:38:47,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:38:47,922 INFO L225 Difference]: With dead ends: 532 [2023-12-20 00:38:47,923 INFO L226 Difference]: Without dead ends: 390 [2023-12-20 00:38:47,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:38:47,924 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 471 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 00:38:47,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 711 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 00:38:47,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-12-20 00:38:47,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 174. [2023-12-20 00:38:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.8224852071005917) internal successors, (308), 170 states have internal predecessors, (308), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:38:47,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 314 transitions. [2023-12-20 00:38:47,946 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 314 transitions. Word has length 184 [2023-12-20 00:38:47,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:38:47,947 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 314 transitions. [2023-12-20 00:38:47,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 314 transitions. [2023-12-20 00:38:47,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 00:38:47,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:38:47,948 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 00:38:47,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 00:38:47,949 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:38:47,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:38:47,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1890617728, now seen corresponding path program 1 times [2023-12-20 00:38:47,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:38:47,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436888002] [2023-12-20 00:38:47,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:47,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:38:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:48,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:38:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:48,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:38:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:48,201 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-20 00:38:48,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:38:48,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436888002] [2023-12-20 00:38:48,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436888002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:38:48,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:38:48,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 00:38:48,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285819026] [2023-12-20 00:38:48,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:38:48,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 00:38:48,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:38:48,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 00:38:48,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:38:48,206 INFO L87 Difference]: Start difference. First operand 174 states and 314 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:48,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:38:48,754 INFO L93 Difference]: Finished difference Result 650 states and 1188 transitions. [2023-12-20 00:38:48,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:38:48,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2023-12-20 00:38:48,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:38:48,757 INFO L225 Difference]: With dead ends: 650 [2023-12-20 00:38:48,757 INFO L226 Difference]: Without dead ends: 478 [2023-12-20 00:38:48,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:38:48,759 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 471 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 00:38:48,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 708 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 00:38:48,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-12-20 00:38:48,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 218. [2023-12-20 00:38:48,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 213 states have (on average 1.84037558685446) internal successors, (392), 214 states have internal predecessors, (392), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:38:48,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 398 transitions. [2023-12-20 00:38:48,768 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 398 transitions. Word has length 184 [2023-12-20 00:38:48,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:38:48,768 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 398 transitions. [2023-12-20 00:38:48,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:48,768 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 398 transitions. [2023-12-20 00:38:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 00:38:48,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:38:48,770 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 00:38:48,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 00:38:48,770 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:38:48,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:38:48,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1190043012, now seen corresponding path program 1 times [2023-12-20 00:38:48,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:38:48,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457876653] [2023-12-20 00:38:48,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:48,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:38:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:48,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:38:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:48,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:38:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-20 00:38:48,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:38:48,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457876653] [2023-12-20 00:38:48,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457876653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:38:48,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:38:48,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 00:38:48,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523887076] [2023-12-20 00:38:48,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:38:48,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 00:38:48,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:38:48,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 00:38:48,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:38:48,984 INFO L87 Difference]: Start difference. First operand 218 states and 398 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:49,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:38:49,728 INFO L93 Difference]: Finished difference Result 1004 states and 1848 transitions. [2023-12-20 00:38:49,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 00:38:49,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2023-12-20 00:38:49,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:38:49,732 INFO L225 Difference]: With dead ends: 1004 [2023-12-20 00:38:49,732 INFO L226 Difference]: Without dead ends: 788 [2023-12-20 00:38:49,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:38:49,733 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 794 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 00:38:49,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 717 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 00:38:49,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2023-12-20 00:38:49,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 337. [2023-12-20 00:38:49,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 332 states have (on average 1.8644578313253013) internal successors, (619), 333 states have internal predecessors, (619), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:38:49,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 625 transitions. [2023-12-20 00:38:49,744 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 625 transitions. Word has length 184 [2023-12-20 00:38:49,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:38:49,744 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 625 transitions. [2023-12-20 00:38:49,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:49,744 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 625 transitions. [2023-12-20 00:38:49,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 00:38:49,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:38:49,746 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 00:38:49,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 00:38:49,746 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:38:49,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:38:49,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1530401024, now seen corresponding path program 1 times [2023-12-20 00:38:49,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:38:49,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198981430] [2023-12-20 00:38:49,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:49,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:38:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:49,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:38:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:49,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:38:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:49,941 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-20 00:38:49,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:38:49,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198981430] [2023-12-20 00:38:49,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198981430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:38:49,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:38:49,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 00:38:49,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526811571] [2023-12-20 00:38:49,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:38:49,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 00:38:49,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:38:49,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 00:38:49,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:38:49,943 INFO L87 Difference]: Start difference. First operand 337 states and 625 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:50,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:38:50,700 INFO L93 Difference]: Finished difference Result 1231 states and 2301 transitions. [2023-12-20 00:38:50,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:38:50,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2023-12-20 00:38:50,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:38:50,704 INFO L225 Difference]: With dead ends: 1231 [2023-12-20 00:38:50,704 INFO L226 Difference]: Without dead ends: 896 [2023-12-20 00:38:50,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:38:50,706 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 805 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:38:50,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 522 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 00:38:50,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2023-12-20 00:38:50,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 427. [2023-12-20 00:38:50,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 422 states have (on average 1.6943127962085307) internal successors, (715), 423 states have internal predecessors, (715), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:38:50,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 721 transitions. [2023-12-20 00:38:50,719 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 721 transitions. Word has length 184 [2023-12-20 00:38:50,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:38:50,719 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 721 transitions. [2023-12-20 00:38:50,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:50,719 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 721 transitions. [2023-12-20 00:38:50,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 00:38:50,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:38:50,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 00:38:50,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 00:38:50,721 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:38:50,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:38:50,722 INFO L85 PathProgramCache]: Analyzing trace with hash -69895292, now seen corresponding path program 1 times [2023-12-20 00:38:50,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:38:50,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074441499] [2023-12-20 00:38:50,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:50,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:38:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:50,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:38:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:50,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:38:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-20 00:38:50,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:38:50,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074441499] [2023-12-20 00:38:50,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074441499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:38:50,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:38:50,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 00:38:50,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083474936] [2023-12-20 00:38:50,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:38:50,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 00:38:50,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:38:50,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 00:38:50,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:38:50,947 INFO L87 Difference]: Start difference. First operand 427 states and 721 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:51,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:38:51,738 INFO L93 Difference]: Finished difference Result 1802 states and 3035 transitions. [2023-12-20 00:38:51,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 00:38:51,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2023-12-20 00:38:51,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:38:51,742 INFO L225 Difference]: With dead ends: 1802 [2023-12-20 00:38:51,743 INFO L226 Difference]: Without dead ends: 1377 [2023-12-20 00:38:51,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:38:51,745 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 706 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:38:51,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 776 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 00:38:51,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2023-12-20 00:38:51,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 630. [2023-12-20 00:38:51,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 625 states have (on average 1.6768) internal successors, (1048), 626 states have internal predecessors, (1048), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:38:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1054 transitions. [2023-12-20 00:38:51,779 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1054 transitions. Word has length 184 [2023-12-20 00:38:51,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:38:51,780 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 1054 transitions. [2023-12-20 00:38:51,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:51,780 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1054 transitions. [2023-12-20 00:38:51,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 00:38:51,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:38:51,782 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 00:38:51,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 00:38:51,783 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:38:51,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:38:51,783 INFO L85 PathProgramCache]: Analyzing trace with hash 128402048, now seen corresponding path program 1 times [2023-12-20 00:38:51,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:38:51,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770925722] [2023-12-20 00:38:51,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:51,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:38:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:51,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:38:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:51,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:38:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 00:38:51,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:38:51,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770925722] [2023-12-20 00:38:51,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770925722] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:38:51,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661047494] [2023-12-20 00:38:51,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:51,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:38:51,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:38:51,968 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:38:51,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 00:38:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:52,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 00:38:52,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:38:52,153 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-20 00:38:52,153 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:38:52,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661047494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:38:52,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:38:52,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-20 00:38:52,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857741953] [2023-12-20 00:38:52,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:38:52,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:38:52,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:38:52,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:38:52,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:38:52,156 INFO L87 Difference]: Start difference. First operand 630 states and 1054 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:52,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:38:52,175 INFO L93 Difference]: Finished difference Result 1258 states and 2108 transitions. [2023-12-20 00:38:52,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:38:52,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2023-12-20 00:38:52,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:38:52,177 INFO L225 Difference]: With dead ends: 1258 [2023-12-20 00:38:52,177 INFO L226 Difference]: Without dead ends: 630 [2023-12-20 00:38:52,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:38:52,180 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 242 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:38:52,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 246 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:38:52,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-12-20 00:38:52,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2023-12-20 00:38:52,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 625 states have (on average 1.6704) internal successors, (1044), 626 states have internal predecessors, (1044), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:38:52,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1050 transitions. [2023-12-20 00:38:52,196 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1050 transitions. Word has length 184 [2023-12-20 00:38:52,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:38:52,196 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 1050 transitions. [2023-12-20 00:38:52,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:52,196 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1050 transitions. [2023-12-20 00:38:52,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 00:38:52,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:38:52,198 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 00:38:52,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 00:38:52,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:38:52,404 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:38:52,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:38:52,405 INFO L85 PathProgramCache]: Analyzing trace with hash -280843260, now seen corresponding path program 1 times [2023-12-20 00:38:52,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:38:52,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112502953] [2023-12-20 00:38:52,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:52,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:38:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:52,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:38:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:52,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:38:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:52,577 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-20 00:38:52,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:38:52,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112502953] [2023-12-20 00:38:52,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112502953] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:38:52,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085371281] [2023-12-20 00:38:52,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:52,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:38:52,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:38:52,579 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:38:52,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 00:38:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:52,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 00:38:52,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:38:52,771 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-20 00:38:52,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:38:52,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085371281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:38:52,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:38:52,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-20 00:38:52,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200293852] [2023-12-20 00:38:52,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:38:52,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:38:52,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:38:52,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:38:52,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:38:52,773 INFO L87 Difference]: Start difference. First operand 630 states and 1050 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:52,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:38:52,790 INFO L93 Difference]: Finished difference Result 1258 states and 2100 transitions. [2023-12-20 00:38:52,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:38:52,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2023-12-20 00:38:52,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:38:52,793 INFO L225 Difference]: With dead ends: 1258 [2023-12-20 00:38:52,793 INFO L226 Difference]: Without dead ends: 630 [2023-12-20 00:38:52,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:38:52,796 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 240 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:38:52,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 245 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:38:52,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-12-20 00:38:52,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2023-12-20 00:38:52,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 625 states have (on average 1.664) internal successors, (1040), 626 states have internal predecessors, (1040), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:38:52,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1046 transitions. [2023-12-20 00:38:52,810 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1046 transitions. Word has length 184 [2023-12-20 00:38:52,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:38:52,810 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 1046 transitions. [2023-12-20 00:38:52,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:52,810 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1046 transitions. [2023-12-20 00:38:52,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 00:38:52,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:38:52,812 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 00:38:52,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 00:38:53,020 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,SelfDestructingSolverStorable7 [2023-12-20 00:38:53,020 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:38:53,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:38:53,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1368523264, now seen corresponding path program 1 times [2023-12-20 00:38:53,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:38:53,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883585061] [2023-12-20 00:38:53,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:53,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:38:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:53,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:38:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:53,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:38:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:53,187 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 00:38:53,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:38:53,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883585061] [2023-12-20 00:38:53,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883585061] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:38:53,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727319085] [2023-12-20 00:38:53,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:53,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:38:53,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:38:53,188 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:38:53,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 00:38:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:53,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 00:38:53,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:38:53,342 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-20 00:38:53,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:38:53,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727319085] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:38:53,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:38:53,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-20 00:38:53,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179492835] [2023-12-20 00:38:53,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:38:53,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:38:53,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:38:53,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:38:53,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:38:53,343 INFO L87 Difference]: Start difference. First operand 630 states and 1046 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:53,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:38:53,359 INFO L93 Difference]: Finished difference Result 1258 states and 2092 transitions. [2023-12-20 00:38:53,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:38:53,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2023-12-20 00:38:53,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:38:53,361 INFO L225 Difference]: With dead ends: 1258 [2023-12-20 00:38:53,361 INFO L226 Difference]: Without dead ends: 630 [2023-12-20 00:38:53,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:38:53,363 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 238 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:38:53,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 244 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:38:53,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-12-20 00:38:53,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2023-12-20 00:38:53,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 625 states have (on average 1.6576) internal successors, (1036), 626 states have internal predecessors, (1036), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:38:53,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1042 transitions. [2023-12-20 00:38:53,374 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1042 transitions. Word has length 184 [2023-12-20 00:38:53,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:38:53,375 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 1042 transitions. [2023-12-20 00:38:53,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:53,375 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1042 transitions. [2023-12-20 00:38:53,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 00:38:53,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:38:53,377 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 00:38:53,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 00:38:53,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:38:53,582 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:38:53,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:38:53,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1698823300, now seen corresponding path program 1 times [2023-12-20 00:38:53,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:38:53,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400746774] [2023-12-20 00:38:53,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:53,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:38:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:53,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:38:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:53,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:38:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-20 00:38:53,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:38:53,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400746774] [2023-12-20 00:38:53,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400746774] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:38:53,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037301352] [2023-12-20 00:38:53,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:53,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:38:53,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:38:53,795 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:38:53,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 00:38:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:53,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 00:38:53,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:38:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-20 00:38:53,965 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:38:53,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037301352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:38:53,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:38:53,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-12-20 00:38:53,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061671040] [2023-12-20 00:38:53,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:38:53,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:38:53,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:38:53,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:38:53,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:38:53,966 INFO L87 Difference]: Start difference. First operand 630 states and 1042 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:54,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:38:54,015 INFO L93 Difference]: Finished difference Result 1886 states and 3130 transitions. [2023-12-20 00:38:54,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:38:54,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2023-12-20 00:38:54,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:38:54,020 INFO L225 Difference]: With dead ends: 1886 [2023-12-20 00:38:54,020 INFO L226 Difference]: Without dead ends: 1258 [2023-12-20 00:38:54,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:38:54,025 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 221 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:38:54,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 480 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:38:54,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2023-12-20 00:38:54,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1256. [2023-12-20 00:38:54,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 1248 states have (on average 1.6258012820512822) internal successors, (2029), 1249 states have internal predecessors, (2029), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-20 00:38:54,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 2044 transitions. [2023-12-20 00:38:54,049 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 2044 transitions. Word has length 184 [2023-12-20 00:38:54,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:38:54,049 INFO L495 AbstractCegarLoop]: Abstraction has 1256 states and 2044 transitions. [2023-12-20 00:38:54,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:54,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 2044 transitions. [2023-12-20 00:38:54,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 00:38:54,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:38:54,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 00:38:54,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 00:38:54,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:38:54,260 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:38:54,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:38:54,261 INFO L85 PathProgramCache]: Analyzing trace with hash 2122516104, now seen corresponding path program 1 times [2023-12-20 00:38:54,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:38:54,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963140356] [2023-12-20 00:38:54,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:54,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:38:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:54,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:38:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:54,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:38:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-20 00:38:54,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:38:54,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963140356] [2023-12-20 00:38:54,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963140356] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:38:54,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790983011] [2023-12-20 00:38:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:54,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:38:54,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:38:54,503 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:38:54,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 00:38:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:54,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 00:38:54,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:38:54,655 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-20 00:38:54,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:38:54,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790983011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:38:54,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:38:54,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-12-20 00:38:54,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327289977] [2023-12-20 00:38:54,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:38:54,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:38:54,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:38:54,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:38:54,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:38:54,658 INFO L87 Difference]: Start difference. First operand 1256 states and 2044 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:38:54,710 INFO L93 Difference]: Finished difference Result 3426 states and 5658 transitions. [2023-12-20 00:38:54,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:38:54,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2023-12-20 00:38:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:38:54,720 INFO L225 Difference]: With dead ends: 3426 [2023-12-20 00:38:54,720 INFO L226 Difference]: Without dead ends: 2172 [2023-12-20 00:38:54,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:38:54,730 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 221 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:38:54,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 479 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:38:54,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2023-12-20 00:38:54,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 2170. [2023-12-20 00:38:54,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2170 states, 2156 states have (on average 1.62708719851577) internal successors, (3508), 2157 states have internal predecessors, (3508), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (36), 8 states have call predecessors, (36), 9 states have call successors, (36) [2023-12-20 00:38:54,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2170 states to 2170 states and 3553 transitions. [2023-12-20 00:38:54,803 INFO L78 Accepts]: Start accepts. Automaton has 2170 states and 3553 transitions. Word has length 184 [2023-12-20 00:38:54,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:38:54,803 INFO L495 AbstractCegarLoop]: Abstraction has 2170 states and 3553 transitions. [2023-12-20 00:38:54,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:54,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2170 states and 3553 transitions. [2023-12-20 00:38:54,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 00:38:54,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:38:54,812 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 00:38:54,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 00:38:55,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-20 00:38:55,017 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:38:55,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:38:55,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1184139384, now seen corresponding path program 1 times [2023-12-20 00:38:55,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:38:55,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729171360] [2023-12-20 00:38:55,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:55,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:38:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:55,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:38:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:55,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:38:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:55,223 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-20 00:38:55,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:38:55,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729171360] [2023-12-20 00:38:55,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729171360] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:38:55,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750498371] [2023-12-20 00:38:55,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:55,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:38:55,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:38:55,225 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:38:55,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 00:38:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:55,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 00:38:55,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:38:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-20 00:38:55,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:38:55,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750498371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:38:55,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:38:55,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-12-20 00:38:55,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399548649] [2023-12-20 00:38:55,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:38:55,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:38:55,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:38:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:38:55,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:38:55,371 INFO L87 Difference]: Start difference. First operand 2170 states and 3553 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:55,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:38:55,465 INFO L93 Difference]: Finished difference Result 6506 states and 10783 transitions. [2023-12-20 00:38:55,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:38:55,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2023-12-20 00:38:55,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:38:55,500 INFO L225 Difference]: With dead ends: 6506 [2023-12-20 00:38:55,500 INFO L226 Difference]: Without dead ends: 4338 [2023-12-20 00:38:55,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:38:55,533 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 221 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:38:55,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 480 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:38:55,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4338 states. [2023-12-20 00:38:55,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4338 to 4336. [2023-12-20 00:38:55,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4336 states, 4310 states have (on average 1.6037122969837587) internal successors, (6912), 4311 states have internal predecessors, (6912), 17 states have call successors, (17), 8 states have call predecessors, (17), 8 states have return successors, (136), 16 states have call predecessors, (136), 17 states have call successors, (136) [2023-12-20 00:38:55,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4336 states to 4336 states and 7065 transitions. [2023-12-20 00:38:55,676 INFO L78 Accepts]: Start accepts. Automaton has 4336 states and 7065 transitions. Word has length 184 [2023-12-20 00:38:55,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:38:55,676 INFO L495 AbstractCegarLoop]: Abstraction has 4336 states and 7065 transitions. [2023-12-20 00:38:55,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:55,677 INFO L276 IsEmpty]: Start isEmpty. Operand 4336 states and 7065 transitions. [2023-12-20 00:38:55,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 00:38:55,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:38:55,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 00:38:55,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 00:38:55,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:38:55,913 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:38:55,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:38:55,914 INFO L85 PathProgramCache]: Analyzing trace with hash 925951624, now seen corresponding path program 1 times [2023-12-20 00:38:55,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:38:55,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005929051] [2023-12-20 00:38:55,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:55,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:38:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:56,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:38:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:56,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:38:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:56,128 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-20 00:38:56,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:38:56,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005929051] [2023-12-20 00:38:56,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005929051] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:38:56,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4297244] [2023-12-20 00:38:56,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:56,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:38:56,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:38:56,130 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:38:56,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 00:38:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:56,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 00:38:56,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:38:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-20 00:38:56,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:38:56,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4297244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:38:56,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:38:56,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-20 00:38:56,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069077697] [2023-12-20 00:38:56,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:38:56,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:38:56,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:38:56,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:38:56,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:38:56,298 INFO L87 Difference]: Start difference. First operand 4336 states and 7065 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:56,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:38:56,526 INFO L93 Difference]: Finished difference Result 13004 states and 21703 transitions. [2023-12-20 00:38:56,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:38:56,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2023-12-20 00:38:56,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:38:56,597 INFO L225 Difference]: With dead ends: 13004 [2023-12-20 00:38:56,598 INFO L226 Difference]: Without dead ends: 8670 [2023-12-20 00:38:56,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:38:56,660 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 207 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:38:56,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 479 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:38:56,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8670 states. [2023-12-20 00:38:56,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8670 to 8668. [2023-12-20 00:38:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8668 states, 8618 states have (on average 1.5801810164771408) internal successors, (13618), 8619 states have internal predecessors, (13618), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (528), 32 states have call predecessors, (528), 33 states have call successors, (528) [2023-12-20 00:38:56,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8668 states to 8668 states and 14179 transitions. [2023-12-20 00:38:56,956 INFO L78 Accepts]: Start accepts. Automaton has 8668 states and 14179 transitions. Word has length 184 [2023-12-20 00:38:56,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:38:56,956 INFO L495 AbstractCegarLoop]: Abstraction has 8668 states and 14179 transitions. [2023-12-20 00:38:56,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:56,956 INFO L276 IsEmpty]: Start isEmpty. Operand 8668 states and 14179 transitions. [2023-12-20 00:38:57,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 00:38:57,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:38:57,028 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 00:38:57,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 00:38:57,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:38:57,235 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:38:57,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:38:57,236 INFO L85 PathProgramCache]: Analyzing trace with hash 343119364, now seen corresponding path program 1 times [2023-12-20 00:38:57,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:38:57,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466596494] [2023-12-20 00:38:57,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:57,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:38:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:57,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:38:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:57,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:38:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-20 00:38:57,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:38:57,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466596494] [2023-12-20 00:38:57,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466596494] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:38:57,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259006820] [2023-12-20 00:38:57,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:38:57,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:38:57,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:38:57,481 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:38:57,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 00:38:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:38:57,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 00:38:57,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:38:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-20 00:38:57,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:38:57,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259006820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:38:57,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:38:57,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-12-20 00:38:57,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990783547] [2023-12-20 00:38:57,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:38:57,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:38:57,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:38:57,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:38:57,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:38:57,624 INFO L87 Difference]: Start difference. First operand 8668 states and 14179 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:58,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:38:58,271 INFO L93 Difference]: Finished difference Result 26000 states and 44581 transitions. [2023-12-20 00:38:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:38:58,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2023-12-20 00:38:58,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:38:58,479 INFO L225 Difference]: With dead ends: 26000 [2023-12-20 00:38:58,479 INFO L226 Difference]: Without dead ends: 17334 [2023-12-20 00:38:58,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:38:58,676 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 221 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:38:58,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 480 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:38:58,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17334 states. [2023-12-20 00:38:59,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17334 to 17332. [2023-12-20 00:38:59,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17332 states, 17234 states have (on average 1.5565742137634908) internal successors, (26826), 17235 states have internal predecessors, (26826), 65 states have call successors, (65), 32 states have call predecessors, (65), 32 states have return successors, (2080), 64 states have call predecessors, (2080), 65 states have call successors, (2080) [2023-12-20 00:38:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17332 states to 17332 states and 28971 transitions. [2023-12-20 00:38:59,504 INFO L78 Accepts]: Start accepts. Automaton has 17332 states and 28971 transitions. Word has length 184 [2023-12-20 00:38:59,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:38:59,504 INFO L495 AbstractCegarLoop]: Abstraction has 17332 states and 28971 transitions. [2023-12-20 00:38:59,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:38:59,504 INFO L276 IsEmpty]: Start isEmpty. Operand 17332 states and 28971 transitions. [2023-12-20 00:38:59,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 00:38:59,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:38:59,857 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 00:38:59,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 00:39:00,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-20 00:39:00,062 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:39:00,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:39:00,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1323353216, now seen corresponding path program 1 times [2023-12-20 00:39:00,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:39:00,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856418237] [2023-12-20 00:39:00,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:39:00,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:39:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:39:00,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:39:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:39:00,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:39:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:39:00,291 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-20 00:39:00,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:39:00,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856418237] [2023-12-20 00:39:00,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856418237] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:39:00,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697519287] [2023-12-20 00:39:00,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:39:00,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:39:00,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:39:00,293 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:39:00,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 00:39:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:39:00,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 00:39:00,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:39:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-20 00:39:00,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:39:00,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697519287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:39:00,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:39:00,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-12-20 00:39:00,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525585148] [2023-12-20 00:39:00,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:39:00,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:39:00,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:39:00,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:39:00,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:39:00,429 INFO L87 Difference]: Start difference. First operand 17332 states and 28971 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:39:02,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:39:02,794 INFO L93 Difference]: Finished difference Result 51992 states and 95101 transitions. [2023-12-20 00:39:02,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:39:02,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2023-12-20 00:39:02,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:39:03,581 INFO L225 Difference]: With dead ends: 51992 [2023-12-20 00:39:03,582 INFO L226 Difference]: Without dead ends: 34662 [2023-12-20 00:39:04,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:39:04,122 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 221 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:39:04,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 480 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:39:04,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34662 states. [2023-12-20 00:39:05,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34662 to 34660. [2023-12-20 00:39:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34660 states, 34466 states have (on average 1.5329310044681714) internal successors, (52834), 34467 states have internal predecessors, (52834), 129 states have call successors, (129), 64 states have call predecessors, (129), 64 states have return successors, (8256), 128 states have call predecessors, (8256), 129 states have call successors, (8256) [2023-12-20 00:39:06,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34660 states to 34660 states and 61219 transitions. [2023-12-20 00:39:06,596 INFO L78 Accepts]: Start accepts. Automaton has 34660 states and 61219 transitions. Word has length 184 [2023-12-20 00:39:06,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:39:06,596 INFO L495 AbstractCegarLoop]: Abstraction has 34660 states and 61219 transitions. [2023-12-20 00:39:06,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:39:06,597 INFO L276 IsEmpty]: Start isEmpty. Operand 34660 states and 61219 transitions. [2023-12-20 00:39:08,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 00:39:08,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:39:08,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 00:39:08,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 00:39:08,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-20 00:39:08,769 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:39:08,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:39:08,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1273506944, now seen corresponding path program 1 times [2023-12-20 00:39:08,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:39:08,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054806200] [2023-12-20 00:39:08,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:39:08,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:39:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:39:09,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:39:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:39:09,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:39:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:39:09,144 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-20 00:39:09,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:39:09,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054806200] [2023-12-20 00:39:09,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054806200] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:39:09,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452361673] [2023-12-20 00:39:09,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:39:09,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:39:09,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:39:09,146 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:39:09,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 00:39:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:39:09,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 00:39:09,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:39:09,293 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-20 00:39:09,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:39:09,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452361673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:39:09,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:39:09,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-12-20 00:39:09,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879600771] [2023-12-20 00:39:09,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:39:09,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:39:09,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:39:09,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:39:09,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:39:09,296 INFO L87 Difference]: Start difference. First operand 34660 states and 61219 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:39:17,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:39:17,363 INFO L93 Difference]: Finished difference Result 103976 states and 216421 transitions. [2023-12-20 00:39:17,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:39:17,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 184 [2023-12-20 00:39:17,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:39:19,795 INFO L225 Difference]: With dead ends: 103976 [2023-12-20 00:39:19,795 INFO L226 Difference]: Without dead ends: 69318 [2023-12-20 00:39:21,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:39:21,966 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 220 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:39:21,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 480 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:39:21,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69318 states. [2023-12-20 00:39:26,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69318 to 69316. [2023-12-20 00:39:26,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69316 states, 68930 states have (on average 1.5092702741912085) internal successors, (104034), 68931 states have internal predecessors, (104034), 257 states have call successors, (257), 128 states have call predecessors, (257), 128 states have return successors, (32896), 256 states have call predecessors, (32896), 257 states have call successors, (32896) [2023-12-20 00:39:29,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69316 states to 69316 states and 137187 transitions. [2023-12-20 00:39:29,938 INFO L78 Accepts]: Start accepts. Automaton has 69316 states and 137187 transitions. Word has length 184 [2023-12-20 00:39:29,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:39:29,938 INFO L495 AbstractCegarLoop]: Abstraction has 69316 states and 137187 transitions. [2023-12-20 00:39:29,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 00:39:29,938 INFO L276 IsEmpty]: Start isEmpty. Operand 69316 states and 137187 transitions. [2023-12-20 00:39:36,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 00:39:36,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:39:36,913 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 00:39:36,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 00:39:37,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-20 00:39:37,114 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:39:37,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:39:37,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1413670016, now seen corresponding path program 1 times [2023-12-20 00:39:37,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:39:37,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418478956] [2023-12-20 00:39:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:39:37,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:39:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:39:37,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:39:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:39:37,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:39:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:39:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-20 00:39:37,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:39:37,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418478956] [2023-12-20 00:39:37,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418478956] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:39:37,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288036205] [2023-12-20 00:39:37,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:39:37,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:39:37,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:39:37,554 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:39:37,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 00:39:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:39:37,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 00:39:37,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:39:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-20 00:39:37,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:39:37,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288036205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:39:37,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:39:37,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-12-20 00:39:37,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107732946] [2023-12-20 00:39:37,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:39:37,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:39:37,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:39:37,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:39:37,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:39:37,702 INFO L87 Difference]: Start difference. First operand 69316 states and 137187 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)