/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/recursive/gcd02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 23:41:15,748 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 23:41:15,808 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 23:41:15,811 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 23:41:15,811 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 23:41:15,831 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 23:41:15,832 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 23:41:15,832 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 23:41:15,832 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 23:41:15,832 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 23:41:15,833 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 23:41:15,833 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 23:41:15,833 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 23:41:15,833 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 23:41:15,834 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 23:41:15,834 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 23:41:15,834 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 23:41:15,834 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 23:41:15,835 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 23:41:15,835 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 23:41:15,835 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 23:41:15,838 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 23:41:15,838 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 23:41:15,838 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 23:41:15,841 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 23:41:15,841 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 23:41:15,841 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 23:41:15,841 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 23:41:15,841 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 23:41:15,842 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 23:41:15,842 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 23:41:15,842 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 23:41:15,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 23:41:15,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 23:41:15,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 23:41:15,843 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 23:41:15,843 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 23:41:15,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 23:41:15,843 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 23:41:15,843 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 23:41:15,843 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 23:41:15,845 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 23:41:15,845 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 23:41:15,845 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 23:41:15,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 23:41:16,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 23:41:16,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 23:41:16,003 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 23:41:16,003 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 23:41:16,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/gcd02.c [2023-12-19 23:41:17,052 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 23:41:17,287 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 23:41:17,288 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/gcd02.c [2023-12-19 23:41:17,307 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf856fe7c/3280661a954d4b329b260a65253be314/FLAG1f07eeb3e [2023-12-19 23:41:17,336 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf856fe7c/3280661a954d4b329b260a65253be314 [2023-12-19 23:41:17,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 23:41:17,340 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 23:41:17,341 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 23:41:17,341 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 23:41:17,345 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 23:41:17,345 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:41:17" (1/1) ... [2023-12-19 23:41:17,346 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1de35b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:17, skipping insertion in model container [2023-12-19 23:41:17,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:41:17" (1/1) ... [2023-12-19 23:41:17,364 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 23:41:17,454 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/gcd02.c[623,636] [2023-12-19 23:41:17,462 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/gcd02.c[1283,1296] [2023-12-19 23:41:17,463 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 23:41:17,470 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 23:41:17,478 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/gcd02.c[623,636] [2023-12-19 23:41:17,484 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/gcd02.c[1283,1296] [2023-12-19 23:41:17,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 23:41:17,494 INFO L206 MainTranslator]: Completed translation [2023-12-19 23:41:17,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:17 WrapperNode [2023-12-19 23:41:17,494 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 23:41:17,495 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 23:41:17,495 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 23:41:17,495 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 23:41:17,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:17" (1/1) ... [2023-12-19 23:41:17,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:17" (1/1) ... [2023-12-19 23:41:17,513 INFO L138 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-12-19 23:41:17,514 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 23:41:17,514 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 23:41:17,514 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 23:41:17,514 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 23:41:17,521 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:17" (1/1) ... [2023-12-19 23:41:17,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:17" (1/1) ... [2023-12-19 23:41:17,522 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:17" (1/1) ... [2023-12-19 23:41:17,534 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2023-12-19 23:41:17,535 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:17" (1/1) ... [2023-12-19 23:41:17,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:17" (1/1) ... [2023-12-19 23:41:17,537 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:17" (1/1) ... [2023-12-19 23:41:17,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:17" (1/1) ... [2023-12-19 23:41:17,539 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:17" (1/1) ... [2023-12-19 23:41:17,539 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:17" (1/1) ... [2023-12-19 23:41:17,540 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 23:41:17,541 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 23:41:17,541 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 23:41:17,541 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 23:41:17,541 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:17" (1/1) ... [2023-12-19 23:41:17,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 23:41:17,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:17,564 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) [2023-12-19 23:41:17,574 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 [2023-12-19 23:41:17,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 23:41:17,590 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2023-12-19 23:41:17,590 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2023-12-19 23:41:17,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 23:41:17,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 23:41:17,592 INFO L130 BoogieDeclarations]: Found specification of procedure divides [2023-12-19 23:41:17,592 INFO L138 BoogieDeclarations]: Found implementation of procedure divides [2023-12-19 23:41:17,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 23:41:17,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 23:41:17,641 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 23:41:17,642 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 23:41:17,755 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 23:41:17,779 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 23:41:17,779 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-19 23:41:17,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:41:17 BoogieIcfgContainer [2023-12-19 23:41:17,779 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 23:41:17,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 23:41:17,781 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 23:41:17,783 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 23:41:17,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 11:41:17" (1/3) ... [2023-12-19 23:41:17,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f97ed11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:41:17, skipping insertion in model container [2023-12-19 23:41:17,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:17" (2/3) ... [2023-12-19 23:41:17,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f97ed11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:41:17, skipping insertion in model container [2023-12-19 23:41:17,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:41:17" (3/3) ... [2023-12-19 23:41:17,785 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd02.c [2023-12-19 23:41:17,797 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 23:41:17,798 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 23:41:17,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 23:41:17,833 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;@4e13110d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 23:41:17,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 23:41:17,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 22 states have (on average 1.5) internal successors, (33), 24 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-19 23:41:17,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-19 23:41:17,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:17,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:17,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:17,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:17,847 INFO L85 PathProgramCache]: Analyzing trace with hash 192890080, now seen corresponding path program 1 times [2023-12-19 23:41:17,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:17,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71573740] [2023-12-19 23:41:17,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:17,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 23:41:18,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:18,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71573740] [2023-12-19 23:41:18,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71573740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:41:18,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:41:18,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:41:18,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41032409] [2023-12-19 23:41:18,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:41:18,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:41:18,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:18,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:41:18,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:41:18,112 INFO L87 Difference]: Start difference. First operand has 32 states, 22 states have (on average 1.5) internal successors, (33), 24 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 23:41:18,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:18,222 INFO L93 Difference]: Finished difference Result 71 states and 98 transitions. [2023-12-19 23:41:18,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:41:18,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-19 23:41:18,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:18,228 INFO L225 Difference]: With dead ends: 71 [2023-12-19 23:41:18,229 INFO L226 Difference]: Without dead ends: 40 [2023-12-19 23:41:18,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:41:18,237 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 30 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:18,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 116 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:41:18,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-19 23:41:18,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-12-19 23:41:18,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-19 23:41:18,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2023-12-19 23:41:18,265 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 8 [2023-12-19 23:41:18,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:18,265 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2023-12-19 23:41:18,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 23:41:18,265 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2023-12-19 23:41:18,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-19 23:41:18,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:18,266 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:18,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 23:41:18,267 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:18,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:18,267 INFO L85 PathProgramCache]: Analyzing trace with hash -344313825, now seen corresponding path program 1 times [2023-12-19 23:41:18,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:18,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867917615] [2023-12-19 23:41:18,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:18,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 23:41:18,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:18,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867917615] [2023-12-19 23:41:18,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867917615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:41:18,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:41:18,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:41:18,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424998742] [2023-12-19 23:41:18,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:41:18,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:41:18,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:18,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:41:18,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:41:18,378 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 23:41:18,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:18,470 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2023-12-19 23:41:18,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:41:18,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-19 23:41:18,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:18,473 INFO L225 Difference]: With dead ends: 58 [2023-12-19 23:41:18,473 INFO L226 Difference]: Without dead ends: 56 [2023-12-19 23:41:18,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-19 23:41:18,474 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:18,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 97 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:41:18,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-19 23:41:18,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2023-12-19 23:41:18,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 36 states have internal predecessors, (44), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-19 23:41:18,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2023-12-19 23:41:18,489 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 13 [2023-12-19 23:41:18,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:18,489 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2023-12-19 23:41:18,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 23:41:18,489 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2023-12-19 23:41:18,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-19 23:41:18,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:18,490 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:18,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 23:41:18,490 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:18,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:18,491 INFO L85 PathProgramCache]: Analyzing trace with hash -341483680, now seen corresponding path program 1 times [2023-12-19 23:41:18,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:18,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372983667] [2023-12-19 23:41:18,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:18,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 23:41:18,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:18,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372983667] [2023-12-19 23:41:18,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372983667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:41:18,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:41:18,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:41:18,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154856213] [2023-12-19 23:41:18,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:41:18,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:41:18,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:18,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:41:18,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:41:18,602 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 23:41:18,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:18,719 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2023-12-19 23:41:18,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:41:18,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-19 23:41:18,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:18,722 INFO L225 Difference]: With dead ends: 62 [2023-12-19 23:41:18,722 INFO L226 Difference]: Without dead ends: 60 [2023-12-19 23:41:18,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 23:41:18,723 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 21 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:18,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 154 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:41:18,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-19 23:41:18,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 48. [2023-12-19 23:41:18,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-19 23:41:18,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2023-12-19 23:41:18,735 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 13 [2023-12-19 23:41:18,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:18,735 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2023-12-19 23:41:18,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 23:41:18,735 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2023-12-19 23:41:18,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-19 23:41:18,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:18,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:18,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 23:41:18,737 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:18,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:18,737 INFO L85 PathProgramCache]: Analyzing trace with hash -205465366, now seen corresponding path program 1 times [2023-12-19 23:41:18,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:18,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101456721] [2023-12-19 23:41:18,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:18,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:18,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:18,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 23:41:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 23:41:18,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:18,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101456721] [2023-12-19 23:41:18,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101456721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:41:18,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:41:18,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 23:41:18,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957316136] [2023-12-19 23:41:18,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:41:18,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 23:41:18,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:18,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 23:41:18,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 23:41:18,823 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 23:41:18,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:18,839 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2023-12-19 23:41:18,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 23:41:18,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-12-19 23:41:18,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:18,840 INFO L225 Difference]: With dead ends: 54 [2023-12-19 23:41:18,840 INFO L226 Difference]: Without dead ends: 50 [2023-12-19 23:41:18,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 23:41:18,841 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 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 [2023-12-19 23:41:18,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:41:18,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-19 23:41:18,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-12-19 23:41:18,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 36 states have internal predecessors, (43), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-12-19 23:41:18,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2023-12-19 23:41:18,848 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 19 [2023-12-19 23:41:18,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:18,848 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2023-12-19 23:41:18,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 23:41:18,848 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2023-12-19 23:41:18,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-19 23:41:18,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:18,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:18,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 23:41:18,850 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:18,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:18,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1363529512, now seen corresponding path program 1 times [2023-12-19 23:41:18,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:18,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936773169] [2023-12-19 23:41:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:18,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:18,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:18,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 23:41:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:19,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 23:41:19,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:19,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936773169] [2023-12-19 23:41:19,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936773169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:41:19,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:41:19,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 23:41:19,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771964449] [2023-12-19 23:41:19,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:41:19,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 23:41:19,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:19,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 23:41:19,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 23:41:19,006 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 23:41:19,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:19,094 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2023-12-19 23:41:19,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 23:41:19,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2023-12-19 23:41:19,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:19,095 INFO L225 Difference]: With dead ends: 68 [2023-12-19 23:41:19,095 INFO L226 Difference]: Without dead ends: 64 [2023-12-19 23:41:19,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:41:19,096 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 16 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:19,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 94 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:41:19,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-19 23:41:19,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2023-12-19 23:41:19,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 41 states have internal predecessors, (46), 10 states have call successors, (10), 4 states have call predecessors, (10), 7 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2023-12-19 23:41:19,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2023-12-19 23:41:19,105 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 20 [2023-12-19 23:41:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:19,105 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2023-12-19 23:41:19,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 23:41:19,105 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2023-12-19 23:41:19,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-19 23:41:19,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:19,106 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:19,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 23:41:19,107 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:19,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:19,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1456991186, now seen corresponding path program 1 times [2023-12-19 23:41:19,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:19,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440829234] [2023-12-19 23:41:19,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:19,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:19,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:19,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 23:41:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:19,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:41:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 23:41:19,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:19,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440829234] [2023-12-19 23:41:19,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440829234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:41:19,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:41:19,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 23:41:19,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659337074] [2023-12-19 23:41:19,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:41:19,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 23:41:19,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:19,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 23:41:19,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 23:41:19,181 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-19 23:41:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:19,195 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2023-12-19 23:41:19,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 23:41:19,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2023-12-19 23:41:19,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:19,198 INFO L225 Difference]: With dead ends: 63 [2023-12-19 23:41:19,198 INFO L226 Difference]: Without dead ends: 54 [2023-12-19 23:41:19,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 23:41:19,201 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:19,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:41:19,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-19 23:41:19,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-19 23:41:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 39 states have internal predecessors, (44), 10 states have call successors, (10), 4 states have call predecessors, (10), 6 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2023-12-19 23:41:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2023-12-19 23:41:19,222 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 26 [2023-12-19 23:41:19,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:19,222 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2023-12-19 23:41:19,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-19 23:41:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2023-12-19 23:41:19,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-19 23:41:19,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:19,224 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:19,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 23:41:19,224 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:19,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:19,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1678448864, now seen corresponding path program 1 times [2023-12-19 23:41:19,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:19,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447438642] [2023-12-19 23:41:19,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:19,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:19,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:19,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 23:41:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:19,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:41:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 23:41:19,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:19,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447438642] [2023-12-19 23:41:19,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447438642] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:19,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246278615] [2023-12-19 23:41:19,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:19,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:19,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:19,432 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) [2023-12-19 23:41:19,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 23:41:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:19,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 23:41:19,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 23:41:19,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 23:41:19,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246278615] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:19,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:19,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 14 [2023-12-19 23:41:19,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799020943] [2023-12-19 23:41:19,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:19,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 23:41:19,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:19,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 23:41:19,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-19 23:41:19,747 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-19 23:41:19,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:19,891 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2023-12-19 23:41:19,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:41:19,892 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 27 [2023-12-19 23:41:19,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:19,894 INFO L225 Difference]: With dead ends: 62 [2023-12-19 23:41:19,894 INFO L226 Difference]: Without dead ends: 54 [2023-12-19 23:41:19,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-12-19 23:41:19,895 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:19,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 120 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:41:19,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-19 23:41:19,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2023-12-19 23:41:19,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-19 23:41:19,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2023-12-19 23:41:19,899 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 27 [2023-12-19 23:41:19,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:19,912 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2023-12-19 23:41:19,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-19 23:41:19,913 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2023-12-19 23:41:19,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-19 23:41:19,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:19,913 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:19,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 23:41:20,118 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 [2023-12-19 23:41:20,118 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:20,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:20,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1626959476, now seen corresponding path program 1 times [2023-12-19 23:41:20,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:20,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210281769] [2023-12-19 23:41:20,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:20,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:20,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:20,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:20,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 23:41:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:20,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 23:41:20,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:20,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210281769] [2023-12-19 23:41:20,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210281769] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:20,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071970907] [2023-12-19 23:41:20,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:20,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:20,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:20,288 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) [2023-12-19 23:41:20,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 23:41:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:20,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 23:41:20,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 23:41:20,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:20,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 23:41:20,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071970907] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:20,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:20,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2023-12-19 23:41:20,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103943686] [2023-12-19 23:41:20,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:20,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-19 23:41:20,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:20,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-19 23:41:20,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2023-12-19 23:41:20,648 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 21 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 17 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-19 23:41:20,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:20,835 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2023-12-19 23:41:20,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 23:41:20,836 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 17 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 28 [2023-12-19 23:41:20,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:20,837 INFO L225 Difference]: With dead ends: 73 [2023-12-19 23:41:20,837 INFO L226 Difference]: Without dead ends: 69 [2023-12-19 23:41:20,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2023-12-19 23:41:20,837 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 24 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:20,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 220 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:41:20,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-19 23:41:20,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 58. [2023-12-19 23:41:20,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 40 states have (on average 1.15) internal successors, (46), 41 states have internal predecessors, (46), 10 states have call successors, (10), 4 states have call predecessors, (10), 7 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) [2023-12-19 23:41:20,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2023-12-19 23:41:20,844 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 28 [2023-12-19 23:41:20,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:20,844 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2023-12-19 23:41:20,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 17 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-19 23:41:20,845 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2023-12-19 23:41:20,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-19 23:41:20,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:20,845 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:20,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 23:41:21,050 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 [2023-12-19 23:41:21,053 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:21,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:21,053 INFO L85 PathProgramCache]: Analyzing trace with hash -2138734868, now seen corresponding path program 1 times [2023-12-19 23:41:21,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:21,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701622999] [2023-12-19 23:41:21,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:21,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:21,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:21,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:21,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 23:41:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-19 23:41:21,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:21,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701622999] [2023-12-19 23:41:21,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701622999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:41:21,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:41:21,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 23:41:21,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406228024] [2023-12-19 23:41:21,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:41:21,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 23:41:21,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:21,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 23:41:21,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:41:21,149 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 23:41:21,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:21,242 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2023-12-19 23:41:21,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:41:21,243 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2023-12-19 23:41:21,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:21,243 INFO L225 Difference]: With dead ends: 79 [2023-12-19 23:41:21,243 INFO L226 Difference]: Without dead ends: 75 [2023-12-19 23:41:21,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-19 23:41:21,244 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:21,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 108 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:41:21,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-19 23:41:21,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 62. [2023-12-19 23:41:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 10 states have call successors, (10), 4 states have call predecessors, (10), 8 states have return successors, (19), 14 states have call predecessors, (19), 10 states have call successors, (19) [2023-12-19 23:41:21,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2023-12-19 23:41:21,249 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 28 [2023-12-19 23:41:21,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:21,250 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2023-12-19 23:41:21,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 23:41:21,250 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2023-12-19 23:41:21,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-19 23:41:21,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:21,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:21,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 23:41:21,251 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:21,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:21,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1097221548, now seen corresponding path program 1 times [2023-12-19 23:41:21,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:21,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945295335] [2023-12-19 23:41:21,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:21,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:21,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:21,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:21,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 23:41:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:21,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:41:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 23:41:21,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:21,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945295335] [2023-12-19 23:41:21,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945295335] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:21,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621752307] [2023-12-19 23:41:21,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:21,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:21,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:21,436 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) [2023-12-19 23:41:21,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 23:41:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:21,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 23:41:21,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:21,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 23:41:21,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:22,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 23:41:22,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621752307] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:22,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:22,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 21 [2023-12-19 23:41:22,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685312051] [2023-12-19 23:41:22,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:22,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-19 23:41:22,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:22,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-19 23:41:22,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2023-12-19 23:41:22,057 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand has 21 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 23:41:22,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:22,299 INFO L93 Difference]: Finished difference Result 88 states and 114 transitions. [2023-12-19 23:41:22,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 23:41:22,300 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Word has length 35 [2023-12-19 23:41:22,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:22,301 INFO L225 Difference]: With dead ends: 88 [2023-12-19 23:41:22,301 INFO L226 Difference]: Without dead ends: 84 [2023-12-19 23:41:22,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2023-12-19 23:41:22,301 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 37 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:22,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 245 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 23:41:22,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-19 23:41:22,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2023-12-19 23:41:22,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 50 states have internal predecessors, (55), 11 states have call successors, (11), 4 states have call predecessors, (11), 11 states have return successors, (27), 17 states have call predecessors, (27), 11 states have call successors, (27) [2023-12-19 23:41:22,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 93 transitions. [2023-12-19 23:41:22,309 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 93 transitions. Word has length 35 [2023-12-19 23:41:22,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:22,309 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 93 transitions. [2023-12-19 23:41:22,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.55) internal successors, (51), 19 states have internal predecessors, (51), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 23:41:22,309 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 93 transitions. [2023-12-19 23:41:22,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-19 23:41:22,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:22,310 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:22,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 23:41:22,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:22,515 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:22,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:22,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1054634932, now seen corresponding path program 1 times [2023-12-19 23:41:22,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:22,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817225377] [2023-12-19 23:41:22,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:22,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:22,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:22,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:22,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 23:41:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:22,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:41:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:22,653 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 23:41:22,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:22,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817225377] [2023-12-19 23:41:22,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817225377] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:22,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048502818] [2023-12-19 23:41:22,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:22,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:22,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:22,670 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) [2023-12-19 23:41:22,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 23:41:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:22,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 23:41:22,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 23:41:22,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 23:41:22,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048502818] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:22,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:22,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 15 [2023-12-19 23:41:22,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59754693] [2023-12-19 23:41:22,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:22,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 23:41:22,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:22,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 23:41:22,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-12-19 23:41:22,859 INFO L87 Difference]: Start difference. First operand 72 states and 93 transitions. Second operand has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-19 23:41:22,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:22,987 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2023-12-19 23:41:22,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 23:41:22,988 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 35 [2023-12-19 23:41:22,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:22,988 INFO L225 Difference]: With dead ends: 83 [2023-12-19 23:41:22,988 INFO L226 Difference]: Without dead ends: 74 [2023-12-19 23:41:22,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-12-19 23:41:22,989 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 22 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:22,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 139 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:41:22,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-19 23:41:22,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2023-12-19 23:41:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.125) internal successors, (54), 50 states have internal predecessors, (54), 11 states have call successors, (11), 4 states have call predecessors, (11), 11 states have return successors, (26), 16 states have call predecessors, (26), 11 states have call successors, (26) [2023-12-19 23:41:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions. [2023-12-19 23:41:22,994 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 91 transitions. Word has length 35 [2023-12-19 23:41:22,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:22,994 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 91 transitions. [2023-12-19 23:41:22,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-19 23:41:22,994 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 91 transitions. [2023-12-19 23:41:22,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-19 23:41:22,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:22,995 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:23,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 23:41:23,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:23,200 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:23,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:23,200 INFO L85 PathProgramCache]: Analyzing trace with hash 2077305336, now seen corresponding path program 1 times [2023-12-19 23:41:23,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:23,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667097930] [2023-12-19 23:41:23,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:23,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:23,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:23,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:23,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 23:41:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-19 23:41:23,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:23,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667097930] [2023-12-19 23:41:23,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667097930] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:23,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298561906] [2023-12-19 23:41:23,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:23,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:23,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:23,413 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) [2023-12-19 23:41:23,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 23:41:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:23,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 23:41:23,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:23,688 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 23:41:23,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 23:41:24,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298561906] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:24,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:24,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 39 [2023-12-19 23:41:24,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690776280] [2023-12-19 23:41:24,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:24,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-19 23:41:24,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:24,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-19 23:41:24,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1344, Unknown=0, NotChecked=0, Total=1482 [2023-12-19 23:41:24,250 INFO L87 Difference]: Start difference. First operand 71 states and 91 transitions. Second operand has 39 states, 32 states have (on average 1.875) internal successors, (60), 31 states have internal predecessors, (60), 9 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-19 23:41:24,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:24,705 INFO L93 Difference]: Finished difference Result 102 states and 133 transitions. [2023-12-19 23:41:24,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 23:41:24,706 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 32 states have (on average 1.875) internal successors, (60), 31 states have internal predecessors, (60), 9 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) Word has length 36 [2023-12-19 23:41:24,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:24,707 INFO L225 Difference]: With dead ends: 102 [2023-12-19 23:41:24,707 INFO L226 Difference]: Without dead ends: 98 [2023-12-19 23:41:24,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=351, Invalid=2199, Unknown=0, NotChecked=0, Total=2550 [2023-12-19 23:41:24,708 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 50 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:24,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 390 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 23:41:24,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-19 23:41:24,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 67. [2023-12-19 23:41:24,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 48 states have internal predecessors, (51), 11 states have call successors, (11), 4 states have call predecessors, (11), 10 states have return successors, (23), 14 states have call predecessors, (23), 11 states have call successors, (23) [2023-12-19 23:41:24,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2023-12-19 23:41:24,714 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 36 [2023-12-19 23:41:24,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:24,714 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2023-12-19 23:41:24,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 32 states have (on average 1.875) internal successors, (60), 31 states have internal predecessors, (60), 9 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-19 23:41:24,714 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2023-12-19 23:41:24,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-19 23:41:24,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:24,714 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:24,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 23:41:24,915 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,SelfDestructingSolverStorable11 [2023-12-19 23:41:24,915 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:24,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:24,916 INFO L85 PathProgramCache]: Analyzing trace with hash 511799736, now seen corresponding path program 2 times [2023-12-19 23:41:24,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:24,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997517375] [2023-12-19 23:41:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:24,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:24,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:25,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:25,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:25,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 23:41:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-19 23:41:25,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:25,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997517375] [2023-12-19 23:41:25,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997517375] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:25,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105472152] [2023-12-19 23:41:25,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 23:41:25,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:25,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:25,074 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) [2023-12-19 23:41:25,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 23:41:25,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 23:41:25,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:41:25,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 23:41:25,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:25,253 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 23:41:25,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:25,683 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 23:41:25,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105472152] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:25,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:25,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 15] total 23 [2023-12-19 23:41:25,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405919939] [2023-12-19 23:41:25,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:25,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-19 23:41:25,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:25,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-19 23:41:25,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2023-12-19 23:41:25,685 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 23 states, 20 states have (on average 2.3) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-19 23:41:25,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:25,949 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2023-12-19 23:41:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 23:41:25,949 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.3) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) Word has length 36 [2023-12-19 23:41:25,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:25,950 INFO L225 Difference]: With dead ends: 80 [2023-12-19 23:41:25,950 INFO L226 Difference]: Without dead ends: 76 [2023-12-19 23:41:25,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 61 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 23:41:25,951 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 43 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:25,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 212 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:41:25,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-19 23:41:25,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 63. [2023-12-19 23:41:25,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 45 states have internal predecessors, (49), 10 states have call successors, (10), 4 states have call predecessors, (10), 9 states have return successors, (19), 13 states have call predecessors, (19), 10 states have call successors, (19) [2023-12-19 23:41:25,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2023-12-19 23:41:25,955 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 36 [2023-12-19 23:41:25,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:25,955 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2023-12-19 23:41:25,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.3) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-19 23:41:25,955 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2023-12-19 23:41:25,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-19 23:41:25,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:25,955 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:25,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 23:41:26,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:26,156 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:26,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:26,157 INFO L85 PathProgramCache]: Analyzing trace with hash -2085961572, now seen corresponding path program 2 times [2023-12-19 23:41:26,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:26,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59829443] [2023-12-19 23:41:26,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:26,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:26,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:26,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:26,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:26,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 23:41:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:26,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:41:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:26,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:41:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:26,463 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 23:41:26,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:26,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59829443] [2023-12-19 23:41:26,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59829443] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:26,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799568824] [2023-12-19 23:41:26,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 23:41:26,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:26,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:26,465 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) [2023-12-19 23:41:26,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 23:41:26,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 23:41:26,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:41:26,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 23:41:26,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 23:41:26,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 23:41:27,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799568824] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:27,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:27,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 18] total 27 [2023-12-19 23:41:27,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691220747] [2023-12-19 23:41:27,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:27,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-19 23:41:27,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:27,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-19 23:41:27,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2023-12-19 23:41:27,851 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 27 states, 26 states have (on average 2.576923076923077) internal successors, (67), 23 states have internal predecessors, (67), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (14), 7 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-19 23:41:28,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:28,118 INFO L93 Difference]: Finished difference Result 93 states and 120 transitions. [2023-12-19 23:41:28,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 23:41:28,119 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.576923076923077) internal successors, (67), 23 states have internal predecessors, (67), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (14), 7 states have call predecessors, (14), 12 states have call successors, (14) Word has length 50 [2023-12-19 23:41:28,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:28,120 INFO L225 Difference]: With dead ends: 93 [2023-12-19 23:41:28,120 INFO L226 Difference]: Without dead ends: 89 [2023-12-19 23:41:28,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 88 SyntacticMatches, 9 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=1036, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 23:41:28,121 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 85 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:28,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 322 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 23:41:28,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-19 23:41:28,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 74. [2023-12-19 23:41:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.12) internal successors, (56), 52 states have internal predecessors, (56), 11 states have call successors, (11), 4 states have call predecessors, (11), 12 states have return successors, (28), 17 states have call predecessors, (28), 11 states have call successors, (28) [2023-12-19 23:41:28,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 95 transitions. [2023-12-19 23:41:28,125 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 95 transitions. Word has length 50 [2023-12-19 23:41:28,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:28,126 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 95 transitions. [2023-12-19 23:41:28,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.576923076923077) internal successors, (67), 23 states have internal predecessors, (67), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (14), 7 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-19 23:41:28,126 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 95 transitions. [2023-12-19 23:41:28,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-19 23:41:28,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:28,126 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:28,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 23:41:28,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:28,332 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:28,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:28,332 INFO L85 PathProgramCache]: Analyzing trace with hash -267988016, now seen corresponding path program 3 times [2023-12-19 23:41:28,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:28,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250656942] [2023-12-19 23:41:28,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:28,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:28,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:28,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:28,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 23:41:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:28,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:41:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:28,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:41:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 23:41:28,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:28,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250656942] [2023-12-19 23:41:28,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250656942] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:28,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091667134] [2023-12-19 23:41:28,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 23:41:28,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:28,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:28,569 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) [2023-12-19 23:41:28,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 23:41:28,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-19 23:41:28,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:41:28,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-19 23:41:28,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 23:41:28,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:29,315 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 23:41:29,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091667134] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:29,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:29,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 32 [2023-12-19 23:41:29,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787340687] [2023-12-19 23:41:29,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:29,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 23:41:29,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:29,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 23:41:29,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2023-12-19 23:41:29,317 INFO L87 Difference]: Start difference. First operand 74 states and 95 transitions. Second operand has 32 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 28 states have internal predecessors, (63), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (13), 7 states have call predecessors, (13), 12 states have call successors, (13) [2023-12-19 23:41:29,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:29,566 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2023-12-19 23:41:29,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 23:41:29,566 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 28 states have internal predecessors, (63), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (13), 7 states have call predecessors, (13), 12 states have call successors, (13) Word has length 42 [2023-12-19 23:41:29,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:29,567 INFO L225 Difference]: With dead ends: 83 [2023-12-19 23:41:29,567 INFO L226 Difference]: Without dead ends: 74 [2023-12-19 23:41:29,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 68 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=1286, Unknown=0, NotChecked=0, Total=1482 [2023-12-19 23:41:29,569 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 42 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:29,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 260 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:41:29,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-19 23:41:29,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2023-12-19 23:41:29,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.127659574468085) internal successors, (53), 49 states have internal predecessors, (53), 10 states have call successors, (10), 4 states have call predecessors, (10), 11 states have return successors, (24), 15 states have call predecessors, (24), 10 states have call successors, (24) [2023-12-19 23:41:29,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2023-12-19 23:41:29,576 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 42 [2023-12-19 23:41:29,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:29,576 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2023-12-19 23:41:29,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 28 states have internal predecessors, (63), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (13), 7 states have call predecessors, (13), 12 states have call successors, (13) [2023-12-19 23:41:29,576 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2023-12-19 23:41:29,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-19 23:41:29,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:29,577 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:29,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 23:41:29,782 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,SelfDestructingSolverStorable14 [2023-12-19 23:41:29,782 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:29,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:29,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1480464800, now seen corresponding path program 4 times [2023-12-19 23:41:29,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:29,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278589531] [2023-12-19 23:41:29,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:29,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:29,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:29,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:29,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:29,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 23:41:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:29,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:41:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:30,005 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-19 23:41:30,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:30,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278589531] [2023-12-19 23:41:30,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278589531] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:30,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553156105] [2023-12-19 23:41:30,006 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 23:41:30,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:30,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:30,007 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) [2023-12-19 23:41:30,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 23:41:30,082 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 23:41:30,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:41:30,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-19 23:41:30,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:30,200 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-19 23:41:30,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:30,963 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-19 23:41:30,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553156105] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:30,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:30,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2023-12-19 23:41:30,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707774763] [2023-12-19 23:41:30,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:30,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 23:41:30,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:30,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 23:41:30,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=827, Unknown=0, NotChecked=0, Total=930 [2023-12-19 23:41:30,966 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand has 31 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 26 states have internal predecessors, (66), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (13), 7 states have call predecessors, (13), 12 states have call successors, (13) [2023-12-19 23:41:31,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:31,313 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2023-12-19 23:41:31,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 23:41:31,314 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 26 states have internal predecessors, (66), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (13), 7 states have call predecessors, (13), 12 states have call successors, (13) Word has length 43 [2023-12-19 23:41:31,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:31,315 INFO L225 Difference]: With dead ends: 93 [2023-12-19 23:41:31,315 INFO L226 Difference]: Without dead ends: 89 [2023-12-19 23:41:31,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 71 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=1212, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 23:41:31,316 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 17 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:31,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 325 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 23:41:31,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-19 23:41:31,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 77. [2023-12-19 23:41:31,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 54 states have internal predecessors, (58), 11 states have call successors, (11), 4 states have call predecessors, (11), 13 states have return successors, (29), 18 states have call predecessors, (29), 11 states have call successors, (29) [2023-12-19 23:41:31,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 98 transitions. [2023-12-19 23:41:31,321 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 98 transitions. Word has length 43 [2023-12-19 23:41:31,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:31,321 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 98 transitions. [2023-12-19 23:41:31,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 26 states have internal predecessors, (66), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (13), 7 states have call predecessors, (13), 12 states have call successors, (13) [2023-12-19 23:41:31,322 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 98 transitions. [2023-12-19 23:41:31,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-19 23:41:31,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:31,322 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:31,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-19 23:41:31,527 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,SelfDestructingSolverStorable15 [2023-12-19 23:41:31,528 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:31,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:31,528 INFO L85 PathProgramCache]: Analyzing trace with hash -755000384, now seen corresponding path program 1 times [2023-12-19 23:41:31,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:31,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188272865] [2023-12-19 23:41:31,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:31,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:31,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:31,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:31,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:31,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 23:41:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:31,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:41:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 23:41:31,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:31,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188272865] [2023-12-19 23:41:31,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188272865] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:31,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639971959] [2023-12-19 23:41:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:31,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:31,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:31,754 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) [2023-12-19 23:41:31,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 23:41:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:31,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 23:41:31,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-19 23:41:32,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:32,853 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 23:41:32,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639971959] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:32,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:32,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 17] total 33 [2023-12-19 23:41:32,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705656171] [2023-12-19 23:41:32,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:32,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-19 23:41:32,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:32,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-19 23:41:32,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 23:41:32,855 INFO L87 Difference]: Start difference. First operand 77 states and 98 transitions. Second operand has 33 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 26 states have internal predecessors, (67), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (13), 9 states have call predecessors, (13), 12 states have call successors, (13) [2023-12-19 23:41:33,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:33,316 INFO L93 Difference]: Finished difference Result 119 states and 158 transitions. [2023-12-19 23:41:33,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 23:41:33,317 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 26 states have internal predecessors, (67), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (13), 9 states have call predecessors, (13), 12 states have call successors, (13) Word has length 43 [2023-12-19 23:41:33,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:33,318 INFO L225 Difference]: With dead ends: 119 [2023-12-19 23:41:33,318 INFO L226 Difference]: Without dead ends: 115 [2023-12-19 23:41:33,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 69 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=271, Invalid=1799, Unknown=0, NotChecked=0, Total=2070 [2023-12-19 23:41:33,319 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 78 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:33,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 331 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 23:41:33,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-19 23:41:33,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 81. [2023-12-19 23:41:33,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 56 states have internal predecessors, (61), 11 states have call successors, (11), 4 states have call predecessors, (11), 14 states have return successors, (32), 20 states have call predecessors, (32), 11 states have call successors, (32) [2023-12-19 23:41:33,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 104 transitions. [2023-12-19 23:41:33,324 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 104 transitions. Word has length 43 [2023-12-19 23:41:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:33,324 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 104 transitions. [2023-12-19 23:41:33,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 26 states have internal predecessors, (67), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (13), 9 states have call predecessors, (13), 12 states have call successors, (13) [2023-12-19 23:41:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 104 transitions. [2023-12-19 23:41:33,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-19 23:41:33,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:33,344 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:33,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 23:41:33,548 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,SelfDestructingSolverStorable16 [2023-12-19 23:41:33,549 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:33,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:33,549 INFO L85 PathProgramCache]: Analyzing trace with hash 648223744, now seen corresponding path program 2 times [2023-12-19 23:41:33,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:33,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396283626] [2023-12-19 23:41:33,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:33,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:33,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:33,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:33,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:33,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 23:41:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:33,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:41:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:33,747 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 23:41:33,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:33,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396283626] [2023-12-19 23:41:33,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396283626] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:33,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319947864] [2023-12-19 23:41:33,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 23:41:33,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:33,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:33,767 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) [2023-12-19 23:41:33,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 23:41:33,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 23:41:33,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:41:33,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 23:41:33,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 23:41:33,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:34,512 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-19 23:41:34,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319947864] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:34,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:34,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 22 [2023-12-19 23:41:34,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228370770] [2023-12-19 23:41:34,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:34,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-19 23:41:34,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:34,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-19 23:41:34,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2023-12-19 23:41:34,514 INFO L87 Difference]: Start difference. First operand 81 states and 104 transitions. Second operand has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 19 states have internal predecessors, (56), 9 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 9 states have call successors, (11) [2023-12-19 23:41:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:34,721 INFO L93 Difference]: Finished difference Result 108 states and 141 transitions. [2023-12-19 23:41:34,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 23:41:34,722 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 19 states have internal predecessors, (56), 9 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 9 states have call successors, (11) Word has length 43 [2023-12-19 23:41:34,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:34,722 INFO L225 Difference]: With dead ends: 108 [2023-12-19 23:41:34,722 INFO L226 Difference]: Without dead ends: 104 [2023-12-19 23:41:34,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 76 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2023-12-19 23:41:34,723 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:34,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 239 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:41:34,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-19 23:41:34,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 88. [2023-12-19 23:41:34,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 60 states have (on average 1.1) internal successors, (66), 60 states have internal predecessors, (66), 11 states have call successors, (11), 4 states have call predecessors, (11), 16 states have return successors, (38), 23 states have call predecessors, (38), 11 states have call successors, (38) [2023-12-19 23:41:34,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 115 transitions. [2023-12-19 23:41:34,728 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 115 transitions. Word has length 43 [2023-12-19 23:41:34,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:34,728 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 115 transitions. [2023-12-19 23:41:34,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 19 states have internal predecessors, (56), 9 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 9 states have call successors, (11) [2023-12-19 23:41:34,728 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 115 transitions. [2023-12-19 23:41:34,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-19 23:41:34,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:34,729 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:34,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 23:41:34,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 23:41:34,935 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:34,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:34,935 INFO L85 PathProgramCache]: Analyzing trace with hash 575852236, now seen corresponding path program 3 times [2023-12-19 23:41:34,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:34,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994205019] [2023-12-19 23:41:34,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:34,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:34,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:35,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:35,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:35,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:35,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 23:41:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:35,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:41:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 23:41:35,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:35,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994205019] [2023-12-19 23:41:35,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994205019] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:35,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489853906] [2023-12-19 23:41:35,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 23:41:35,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:35,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:35,209 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:41:35,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 23:41:35,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-19 23:41:35,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:41:35,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 23:41:35,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:35,567 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 23:41:35,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:37,372 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-19 23:41:37,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489853906] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:37,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:37,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 20] total 44 [2023-12-19 23:41:37,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383352498] [2023-12-19 23:41:37,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:37,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-19 23:41:37,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:37,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-19 23:41:37,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2023-12-19 23:41:37,375 INFO L87 Difference]: Start difference. First operand 88 states and 115 transitions. Second operand has 44 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 32 states have internal predecessors, (88), 16 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (18), 14 states have call predecessors, (18), 16 states have call successors, (18) [2023-12-19 23:41:38,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:38,148 INFO L93 Difference]: Finished difference Result 147 states and 195 transitions. [2023-12-19 23:41:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 23:41:38,149 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 32 states have internal predecessors, (88), 16 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (18), 14 states have call predecessors, (18), 16 states have call successors, (18) Word has length 51 [2023-12-19 23:41:38,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:38,150 INFO L225 Difference]: With dead ends: 147 [2023-12-19 23:41:38,150 INFO L226 Difference]: Without dead ends: 143 [2023-12-19 23:41:38,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=326, Invalid=2980, Unknown=0, NotChecked=0, Total=3306 [2023-12-19 23:41:38,151 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 68 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:38,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 443 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 23:41:38,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-12-19 23:41:38,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 96. [2023-12-19 23:41:38,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 64 states have internal predecessors, (72), 11 states have call successors, (11), 4 states have call predecessors, (11), 18 states have return successors, (44), 27 states have call predecessors, (44), 11 states have call successors, (44) [2023-12-19 23:41:38,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 127 transitions. [2023-12-19 23:41:38,157 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 127 transitions. Word has length 51 [2023-12-19 23:41:38,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:38,157 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 127 transitions. [2023-12-19 23:41:38,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 32 states have internal predecessors, (88), 16 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (18), 14 states have call predecessors, (18), 16 states have call successors, (18) [2023-12-19 23:41:38,157 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 127 transitions. [2023-12-19 23:41:38,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-19 23:41:38,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:38,158 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:38,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 23:41:38,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:38,363 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:38,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:38,363 INFO L85 PathProgramCache]: Analyzing trace with hash 610835820, now seen corresponding path program 4 times [2023-12-19 23:41:38,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:38,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400426419] [2023-12-19 23:41:38,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:38,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:38,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:38,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:38,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:38,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:38,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 23:41:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:38,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:41:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 23:41:38,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:38,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400426419] [2023-12-19 23:41:38,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400426419] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:38,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033203333] [2023-12-19 23:41:38,598 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 23:41:38,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:38,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:38,620 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:41:38,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 23:41:38,707 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 23:41:38,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:41:38,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 23:41:38,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 23:41:38,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:40,263 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-19 23:41:40,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033203333] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:40,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:40,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 20] total 36 [2023-12-19 23:41:40,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778423541] [2023-12-19 23:41:40,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:40,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-19 23:41:40,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:40,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-19 23:41:40,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1146, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 23:41:40,266 INFO L87 Difference]: Start difference. First operand 96 states and 127 transitions. Second operand has 36 states, 33 states have (on average 2.272727272727273) internal successors, (75), 27 states have internal predecessors, (75), 13 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (16), 11 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-19 23:41:40,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:40,860 INFO L93 Difference]: Finished difference Result 134 states and 182 transitions. [2023-12-19 23:41:40,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 23:41:40,860 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 2.272727272727273) internal successors, (75), 27 states have internal predecessors, (75), 13 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (16), 11 states have call predecessors, (16), 13 states have call successors, (16) Word has length 51 [2023-12-19 23:41:40,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:40,861 INFO L225 Difference]: With dead ends: 134 [2023-12-19 23:41:40,861 INFO L226 Difference]: Without dead ends: 130 [2023-12-19 23:41:40,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 85 SyntacticMatches, 7 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=335, Invalid=2215, Unknown=0, NotChecked=0, Total=2550 [2023-12-19 23:41:40,862 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 45 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:40,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 473 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 23:41:40,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-19 23:41:40,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 69. [2023-12-19 23:41:40,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.127659574468085) internal successors, (53), 49 states have internal predecessors, (53), 10 states have call successors, (10), 4 states have call predecessors, (10), 11 states have return successors, (22), 15 states have call predecessors, (22), 10 states have call successors, (22) [2023-12-19 23:41:40,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2023-12-19 23:41:40,867 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 51 [2023-12-19 23:41:40,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:40,867 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2023-12-19 23:41:40,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 2.272727272727273) internal successors, (75), 27 states have internal predecessors, (75), 13 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (16), 11 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-19 23:41:40,867 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2023-12-19 23:41:40,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-19 23:41:40,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:40,868 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:40,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-19 23:41:41,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-12-19 23:41:41,069 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:41,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:41,069 INFO L85 PathProgramCache]: Analyzing trace with hash -755482820, now seen corresponding path program 5 times [2023-12-19 23:41:41,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:41,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244687792] [2023-12-19 23:41:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:41,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:41:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 23:41:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:41:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:41:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,310 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 23:41:41,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:41,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244687792] [2023-12-19 23:41:41,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244687792] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:41,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310382106] [2023-12-19 23:41:41,310 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 23:41:41,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:41,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:41,311 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:41:41,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 23:41:41,425 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-19 23:41:41,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:41:41,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 23:41:41,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 23:41:41,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:54,788 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_gcd_#in~y1| |c_gcd_#in~y2|))) (and (forall ((v_gcd_~y1_BEFORE_CALL_42 Int)) (or (< (* (div |c_gcd_#t~ret5| 2) 3) (+ 2 (div (+ (- 1) (* v_gcd_~y1_BEFORE_CALL_42 3)) 6))) (< v_gcd_~y1_BEFORE_CALL_42 .cse0))) (forall ((v_gcd_~y1_BEFORE_CALL_42 Int) (v_y_72 Int)) (let ((.cse1 (* v_gcd_~y1_BEFORE_CALL_42 3))) (let ((.cse2 (div (+ (- 1) .cse1) 6))) (or (< (+ (* |c_gcd_#t~ret5| 3) 4) (+ (mod (+ 5 .cse1) 6) (* v_y_72 6))) (< (* v_y_72 3) .cse2) (< (+ |c_gcd_#t~ret5| v_y_72) (+ .cse2 1)) (< v_gcd_~y1_BEFORE_CALL_42 .cse0))))) (forall ((v_gcd_~y1_BEFORE_CALL_42 Int)) (or (< (* 3 (div (+ (- 1) |c_gcd_#t~ret5|) 2)) (div (+ (- 1) (* v_gcd_~y1_BEFORE_CALL_42 3)) 6)) (< v_gcd_~y1_BEFORE_CALL_42 .cse0))))) is different from false [2023-12-19 23:42:27,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310382106] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:42:27,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 23:42:27,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 21 [2023-12-19 23:42:27,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751786664] [2023-12-19 23:42:27,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 23:42:27,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-19 23:42:27,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:42:27,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-19 23:42:27,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=617, Unknown=10, NotChecked=50, Total=756 [2023-12-19 23:42:27,796 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand has 21 states, 20 states have (on average 2.35) internal successors, (47), 17 states have internal predecessors, (47), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 8 states have call successors, (10) [2023-12-19 23:42:28,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:42:28,452 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2023-12-19 23:42:28,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 23:42:28,453 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.35) internal successors, (47), 17 states have internal predecessors, (47), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 8 states have call successors, (10) Word has length 50 [2023-12-19 23:42:28,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:42:28,454 INFO L225 Difference]: With dead ends: 96 [2023-12-19 23:42:28,454 INFO L226 Difference]: Without dead ends: 92 [2023-12-19 23:42:28,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 73 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 45.6s TimeCoverageRelationStatistics Valid=152, Invalid=1032, Unknown=10, NotChecked=66, Total=1260 [2023-12-19 23:42:28,454 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 30 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 23:42:28,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 331 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 23:42:28,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-19 23:42:28,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 72. [2023-12-19 23:42:28,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 51 states have internal predecessors, (55), 10 states have call successors, (10), 4 states have call predecessors, (10), 12 states have return successors, (24), 16 states have call predecessors, (24), 10 states have call successors, (24) [2023-12-19 23:42:28,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2023-12-19 23:42:28,458 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 50 [2023-12-19 23:42:28,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:42:28,458 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2023-12-19 23:42:28,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.35) internal successors, (47), 17 states have internal predecessors, (47), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 8 states have call successors, (10) [2023-12-19 23:42:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2023-12-19 23:42:28,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-19 23:42:28,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:42:28,459 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:42:28,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 23:42:28,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:42:28,676 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:42:28,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:42:28,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1085273852, now seen corresponding path program 6 times [2023-12-19 23:42:28,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:42:28,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641827318] [2023-12-19 23:42:28,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:42:28,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:42:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:28,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:28,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:28,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:28,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 23:42:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:28,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:42:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:29,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:42:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 23:42:29,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:42:29,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641827318] [2023-12-19 23:42:29,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641827318] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:42:29,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146080480] [2023-12-19 23:42:29,111 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 23:42:29,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:42:29,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:42:29,112 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:42:29,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 23:42:29,238 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-19 23:42:29,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:42:29,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-19 23:42:29,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:42:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 23:42:29,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:42:31,203 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 23:42:31,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146080480] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:42:31,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:42:31,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 34 [2023-12-19 23:42:31,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719825369] [2023-12-19 23:42:31,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:42:31,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-19 23:42:31,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:42:31,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-19 23:42:31,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 23:42:31,205 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 34 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (16), 9 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-19 23:42:31,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:42:31,894 INFO L93 Difference]: Finished difference Result 90 states and 114 transitions. [2023-12-19 23:42:31,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 23:42:31,895 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (16), 9 states have call predecessors, (16), 13 states have call successors, (16) Word has length 50 [2023-12-19 23:42:31,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:42:31,896 INFO L225 Difference]: With dead ends: 90 [2023-12-19 23:42:31,896 INFO L226 Difference]: Without dead ends: 81 [2023-12-19 23:42:31,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 83 SyntacticMatches, 9 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=211, Invalid=1511, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 23:42:31,897 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 43 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 23:42:31,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 276 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 23:42:31,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-19 23:42:31,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 73. [2023-12-19 23:42:31,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.12) internal successors, (56), 51 states have internal predecessors, (56), 10 states have call successors, (10), 4 states have call predecessors, (10), 12 states have return successors, (24), 17 states have call predecessors, (24), 10 states have call successors, (24) [2023-12-19 23:42:31,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2023-12-19 23:42:31,900 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 50 [2023-12-19 23:42:31,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:42:31,901 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2023-12-19 23:42:31,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (16), 9 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-19 23:42:31,901 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2023-12-19 23:42:31,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 23:42:31,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:42:31,901 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:42:31,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 23:42:32,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:42:32,102 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:42:32,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:42:32,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1994498224, now seen corresponding path program 5 times [2023-12-19 23:42:32,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:42:32,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18043326] [2023-12-19 23:42:32,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:42:32,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:42:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:32,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:32,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:32,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:32,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:32,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 23:42:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:32,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:42:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:32,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:42:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 23:42:32,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:42:32,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18043326] [2023-12-19 23:42:32,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18043326] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:42:32,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530457829] [2023-12-19 23:42:32,732 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 23:42:32,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:42:32,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:42:32,733 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:42:32,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 23:42:32,847 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-19 23:42:32,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:42:32,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-19 23:42:32,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:42:33,566 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 23:42:33,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:42:37,177 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-19 23:42:37,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530457829] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:42:37,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:42:37,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 22] total 45 [2023-12-19 23:42:37,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364754337] [2023-12-19 23:42:37,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:42:37,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-19 23:42:37,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:42:37,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-19 23:42:37,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1825, Unknown=0, NotChecked=0, Total=1980 [2023-12-19 23:42:37,179 INFO L87 Difference]: Start difference. First operand 73 states and 90 transitions. Second operand has 45 states, 42 states have (on average 2.119047619047619) internal successors, (89), 34 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) [2023-12-19 23:42:38,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:42:38,296 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2023-12-19 23:42:38,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 23:42:38,297 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 42 states have (on average 2.119047619047619) internal successors, (89), 34 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) Word has length 58 [2023-12-19 23:42:38,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:42:38,298 INFO L225 Difference]: With dead ends: 111 [2023-12-19 23:42:38,298 INFO L226 Difference]: Without dead ends: 107 [2023-12-19 23:42:38,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=310, Invalid=2660, Unknown=0, NotChecked=0, Total=2970 [2023-12-19 23:42:38,299 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 57 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:42:38,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 543 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 23:42:38,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-19 23:42:38,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 75. [2023-12-19 23:42:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 53 states have internal predecessors, (57), 10 states have call successors, (10), 4 states have call predecessors, (10), 13 states have return successors, (27), 17 states have call predecessors, (27), 10 states have call successors, (27) [2023-12-19 23:42:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 94 transitions. [2023-12-19 23:42:38,305 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 94 transitions. Word has length 58 [2023-12-19 23:42:38,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:42:38,305 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 94 transitions. [2023-12-19 23:42:38,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 42 states have (on average 2.119047619047619) internal successors, (89), 34 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) [2023-12-19 23:42:38,305 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 94 transitions. [2023-12-19 23:42:38,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 23:42:38,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:42:38,306 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:42:38,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-19 23:42:38,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-19 23:42:38,512 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:42:38,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:42:38,513 INFO L85 PathProgramCache]: Analyzing trace with hash -356268368, now seen corresponding path program 7 times [2023-12-19 23:42:38,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:42:38,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152784699] [2023-12-19 23:42:38,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:42:38,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:42:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:38,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:38,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:38,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:38,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:38,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 23:42:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:38,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:42:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:38,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:42:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:38,968 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 23:42:38,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:42:38,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152784699] [2023-12-19 23:42:38,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152784699] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:42:38,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315389988] [2023-12-19 23:42:38,969 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 23:42:38,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:42:38,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:42:38,985 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:42:38,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 23:42:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:39,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-19 23:42:39,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:42:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 23:42:39,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:42:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 23:42:42,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315389988] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:42:42,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:42:42,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 19] total 28 [2023-12-19 23:42:42,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623001338] [2023-12-19 23:42:42,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:42:42,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 23:42:42,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:42:42,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 23:42:42,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2023-12-19 23:42:42,163 INFO L87 Difference]: Start difference. First operand 75 states and 94 transitions. Second operand has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 23 states have internal predecessors, (70), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (17), 8 states have call predecessors, (17), 12 states have call successors, (17) [2023-12-19 23:42:42,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:42:42,780 INFO L93 Difference]: Finished difference Result 108 states and 137 transitions. [2023-12-19 23:42:42,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 23:42:42,780 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 23 states have internal predecessors, (70), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (17), 8 states have call predecessors, (17), 12 states have call successors, (17) Word has length 58 [2023-12-19 23:42:42,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:42:42,781 INFO L225 Difference]: With dead ends: 108 [2023-12-19 23:42:42,781 INFO L226 Difference]: Without dead ends: 104 [2023-12-19 23:42:42,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 104 SyntacticMatches, 12 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 23:42:42,782 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 56 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 23:42:42,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 342 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 23:42:42,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-19 23:42:42,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 83. [2023-12-19 23:42:42,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 57 states have (on average 1.105263157894737) internal successors, (63), 57 states have internal predecessors, (63), 10 states have call successors, (10), 4 states have call predecessors, (10), 15 states have return successors, (33), 21 states have call predecessors, (33), 10 states have call successors, (33) [2023-12-19 23:42:42,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 106 transitions. [2023-12-19 23:42:42,786 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 106 transitions. Word has length 58 [2023-12-19 23:42:42,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:42:42,786 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 106 transitions. [2023-12-19 23:42:42,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 23 states have internal predecessors, (70), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (17), 8 states have call predecessors, (17), 12 states have call successors, (17) [2023-12-19 23:42:42,786 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 106 transitions. [2023-12-19 23:42:42,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 23:42:42,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:42:42,787 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:42:42,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 23:42:42,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:42:42,992 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:42:42,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:42:42,992 INFO L85 PathProgramCache]: Analyzing trace with hash 339795120, now seen corresponding path program 8 times [2023-12-19 23:42:42,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:42:42,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051684930] [2023-12-19 23:42:42,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:42:42,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:42:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:43,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:43,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:43,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:43,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:43,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 23:42:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:43,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:42:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:43,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:42:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:43,643 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 23:42:43,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:42:43,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051684930] [2023-12-19 23:42:43,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051684930] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:42:43,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824175261] [2023-12-19 23:42:43,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 23:42:43,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:42:43,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:42:43,644 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:42:43,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 23:42:43,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 23:42:43,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:42:43,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-19 23:42:43,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:42:44,538 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 23:42:44,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:42:47,742 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-19 23:42:47,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824175261] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:42:47,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:42:47,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 23] total 50 [2023-12-19 23:42:47,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799626645] [2023-12-19 23:42:47,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:42:47,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-19 23:42:47,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:42:47,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-19 23:42:47,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=2262, Unknown=0, NotChecked=0, Total=2450 [2023-12-19 23:42:47,745 INFO L87 Difference]: Start difference. First operand 83 states and 106 transitions. Second operand has 50 states, 43 states have (on average 2.0697674418604652) internal successors, (89), 39 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) [2023-12-19 23:42:49,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:42:49,583 INFO L93 Difference]: Finished difference Result 158 states and 209 transitions. [2023-12-19 23:42:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 23:42:49,583 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 43 states have (on average 2.0697674418604652) internal successors, (89), 39 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) Word has length 58 [2023-12-19 23:42:49,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:42:49,584 INFO L225 Difference]: With dead ends: 158 [2023-12-19 23:42:49,584 INFO L226 Difference]: Without dead ends: 154 [2023-12-19 23:42:49,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=533, Invalid=4023, Unknown=0, NotChecked=0, Total=4556 [2023-12-19 23:42:49,586 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 34 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:42:49,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 840 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 23:42:49,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-12-19 23:42:49,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 92. [2023-12-19 23:42:49,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 64 states have (on average 1.09375) internal successors, (70), 61 states have internal predecessors, (70), 10 states have call successors, (10), 4 states have call predecessors, (10), 17 states have return successors, (39), 26 states have call predecessors, (39), 10 states have call successors, (39) [2023-12-19 23:42:49,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 119 transitions. [2023-12-19 23:42:49,592 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 119 transitions. Word has length 58 [2023-12-19 23:42:49,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:42:49,592 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 119 transitions. [2023-12-19 23:42:49,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 43 states have (on average 2.0697674418604652) internal successors, (89), 39 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) [2023-12-19 23:42:49,592 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 119 transitions. [2023-12-19 23:42:49,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 23:42:49,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:42:49,593 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:42:49,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 23:42:49,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:42:49,798 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:42:49,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:42:49,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1978024976, now seen corresponding path program 9 times [2023-12-19 23:42:49,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:42:49,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864580420] [2023-12-19 23:42:49,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:42:49,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:42:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:49,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:49,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:49,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:50,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:50,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 23:42:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:50,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:42:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:50,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:42:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 23:42:50,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:42:50,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864580420] [2023-12-19 23:42:50,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864580420] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:42:50,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168723514] [2023-12-19 23:42:50,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 23:42:50,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:42:50,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:42:50,234 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:42:50,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 23:42:50,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-19 23:42:50,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:42:50,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-19 23:42:50,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:42:50,712 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 23:42:50,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:42:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 23:42:53,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168723514] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:42:53,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:42:53,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 19] total 30 [2023-12-19 23:42:53,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541472819] [2023-12-19 23:42:53,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:42:53,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 23:42:53,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:42:53,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 23:42:53,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2023-12-19 23:42:53,243 INFO L87 Difference]: Start difference. First operand 92 states and 119 transitions. Second operand has 30 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 24 states have internal predecessors, (73), 12 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (17), 9 states have call predecessors, (17), 12 states have call successors, (17) [2023-12-19 23:42:54,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:42:54,116 INFO L93 Difference]: Finished difference Result 128 states and 166 transitions. [2023-12-19 23:42:54,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 23:42:54,117 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 24 states have internal predecessors, (73), 12 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (17), 9 states have call predecessors, (17), 12 states have call successors, (17) Word has length 58 [2023-12-19 23:42:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:42:54,118 INFO L225 Difference]: With dead ends: 128 [2023-12-19 23:42:54,118 INFO L226 Difference]: Without dead ends: 124 [2023-12-19 23:42:54,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 104 SyntacticMatches, 10 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=176, Invalid=1306, Unknown=0, NotChecked=0, Total=1482 [2023-12-19 23:42:54,119 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 31 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 23:42:54,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 424 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 23:42:54,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-19 23:42:54,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 101. [2023-12-19 23:42:54,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 67 states have internal predecessors, (76), 10 states have call successors, (10), 4 states have call predecessors, (10), 20 states have return successors, (47), 29 states have call predecessors, (47), 10 states have call successors, (47) [2023-12-19 23:42:54,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 133 transitions. [2023-12-19 23:42:54,124 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 133 transitions. Word has length 58 [2023-12-19 23:42:54,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:42:54,124 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 133 transitions. [2023-12-19 23:42:54,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 24 states have internal predecessors, (73), 12 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (17), 9 states have call predecessors, (17), 12 states have call successors, (17) [2023-12-19 23:42:54,125 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 133 transitions. [2023-12-19 23:42:54,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 23:42:54,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:42:54,125 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:42:54,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 23:42:54,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:42:54,330 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:42:54,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:42:54,331 INFO L85 PathProgramCache]: Analyzing trace with hash 179375344, now seen corresponding path program 10 times [2023-12-19 23:42:54,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:42:54,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714689973] [2023-12-19 23:42:54,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:42:54,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:42:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:54,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:54,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:54,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:54,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:42:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:54,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 23:42:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:54,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:42:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:54,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:42:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 23:42:54,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:42:54,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714689973] [2023-12-19 23:42:54,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714689973] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:42:54,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614007899] [2023-12-19 23:42:54,854 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 23:42:54,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:42:54,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:42:54,855 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:42:54,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 23:42:55,058 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 23:42:55,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:42:55,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-19 23:42:55,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:42:55,839 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 23:42:55,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:42:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 41 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-19 23:42:59,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614007899] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:42:59,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:42:59,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 22] total 46 [2023-12-19 23:42:59,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544623473] [2023-12-19 23:42:59,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:42:59,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-19 23:42:59,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:42:59,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-19 23:42:59,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1906, Unknown=0, NotChecked=0, Total=2070 [2023-12-19 23:42:59,398 INFO L87 Difference]: Start difference. First operand 101 states and 133 transitions. Second operand has 46 states, 42 states have (on average 2.119047619047619) internal successors, (89), 35 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) [2023-12-19 23:43:01,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:43:01,091 INFO L93 Difference]: Finished difference Result 162 states and 211 transitions. [2023-12-19 23:43:01,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 23:43:01,091 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 42 states have (on average 2.119047619047619) internal successors, (89), 35 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) Word has length 58 [2023-12-19 23:43:01,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:43:01,092 INFO L225 Difference]: With dead ends: 162 [2023-12-19 23:43:01,092 INFO L226 Difference]: Without dead ends: 158 [2023-12-19 23:43:01,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=411, Invalid=3249, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 23:43:01,094 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 56 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:43:01,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 762 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 23:43:01,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-19 23:43:01,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 98. [2023-12-19 23:43:01,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 68 states have (on average 1.088235294117647) internal successors, (74), 65 states have internal predecessors, (74), 10 states have call successors, (10), 4 states have call predecessors, (10), 19 states have return successors, (44), 28 states have call predecessors, (44), 10 states have call successors, (44) [2023-12-19 23:43:01,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 128 transitions. [2023-12-19 23:43:01,100 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 128 transitions. Word has length 58 [2023-12-19 23:43:01,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:43:01,100 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 128 transitions. [2023-12-19 23:43:01,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 42 states have (on average 2.119047619047619) internal successors, (89), 35 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) [2023-12-19 23:43:01,100 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 128 transitions. [2023-12-19 23:43:01,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 23:43:01,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:43:01,101 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:43:01,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 23:43:01,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 23:43:01,306 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:43:01,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:43:01,307 INFO L85 PathProgramCache]: Analyzing trace with hash 319273852, now seen corresponding path program 11 times [2023-12-19 23:43:01,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:43:01,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043477901] [2023-12-19 23:43:01,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:43:01,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:43:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:43:01,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:43:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:43:01,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:43:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:43:01,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:43:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:43:01,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:43:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:43:01,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:43:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:43:01,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 23:43:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:43:01,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:43:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:43:01,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:43:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:43:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 17 proven. 29 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 23:43:01,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:43:01,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043477901] [2023-12-19 23:43:01,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043477901] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:43:01,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454985116] [2023-12-19 23:43:01,881 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 23:43:01,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:43:01,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:43:01,882 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:43:01,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 23:43:02,063 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-19 23:43:02,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:43:02,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-19 23:43:02,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:43:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 23:43:02,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:43:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 57 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 23:43:06,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454985116] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:43:06,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:43:06,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 24] total 42 [2023-12-19 23:43:06,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529250393] [2023-12-19 23:43:06,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:43:06,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-19 23:43:06,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:43:06,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-19 23:43:06,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1582, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 23:43:06,752 INFO L87 Difference]: Start difference. First operand 98 states and 128 transitions. Second operand has 42 states, 40 states have (on average 2.275) internal successors, (91), 32 states have internal predecessors, (91), 17 states have call successors, (18), 1 states have call predecessors, (18), 11 states have return successors, (22), 13 states have call predecessors, (22), 17 states have call successors, (22) [2023-12-19 23:43:08,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:43:08,106 INFO L93 Difference]: Finished difference Result 155 states and 201 transitions. [2023-12-19 23:43:08,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 23:43:08,107 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 2.275) internal successors, (91), 32 states have internal predecessors, (91), 17 states have call successors, (18), 1 states have call predecessors, (18), 11 states have return successors, (22), 13 states have call predecessors, (22), 17 states have call successors, (22) Word has length 66 [2023-12-19 23:43:08,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:43:08,107 INFO L225 Difference]: With dead ends: 155 [2023-12-19 23:43:08,107 INFO L226 Difference]: Without dead ends: 151 [2023-12-19 23:43:08,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 116 SyntacticMatches, 7 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=391, Invalid=2801, Unknown=0, NotChecked=0, Total=3192 [2023-12-19 23:43:08,109 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 30 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:43:08,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 564 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 23:43:08,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-12-19 23:43:08,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 99. [2023-12-19 23:43:08,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 65 states have internal predecessors, (75), 10 states have call successors, (10), 4 states have call predecessors, (10), 19 states have return successors, (44), 29 states have call predecessors, (44), 10 states have call successors, (44) [2023-12-19 23:43:08,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 129 transitions. [2023-12-19 23:43:08,115 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 129 transitions. Word has length 66 [2023-12-19 23:43:08,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:43:08,116 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 129 transitions. [2023-12-19 23:43:08,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 2.275) internal successors, (91), 32 states have internal predecessors, (91), 17 states have call successors, (18), 1 states have call predecessors, (18), 11 states have return successors, (22), 13 states have call predecessors, (22), 17 states have call successors, (22) [2023-12-19 23:43:08,116 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 129 transitions. [2023-12-19 23:43:08,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 23:43:08,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:43:08,116 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:43:08,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 23:43:08,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 23:43:08,317 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:43:08,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:43:08,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1436795420, now seen corresponding path program 12 times [2023-12-19 23:43:08,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:43:08,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343736909] [2023-12-19 23:43:08,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:43:08,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:43:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:43:08,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:43:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:43:08,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:43:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:43:08,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:43:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:43:08,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:43:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:43:08,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:43:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:43:08,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 23:43:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:43:08,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:43:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:43:08,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:43:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:43:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 15 proven. 31 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 23:43:08,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:43:08,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343736909] [2023-12-19 23:43:08,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343736909] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:43:08,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081225239] [2023-12-19 23:43:08,971 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 23:43:08,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:43:08,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:43:08,972 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:43:08,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 23:43:09,185 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-19 23:43:09,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:43:09,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-19 23:43:09,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:43:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 15 proven. 35 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-19 23:43:10,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:44:52,971 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 3 proven. 59 refuted. 2 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 23:44:52,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081225239] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:44:52,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:44:52,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 26] total 53 [2023-12-19 23:44:52,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407648137] [2023-12-19 23:44:52,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:44:52,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-19 23:44:52,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:44:52,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-19 23:44:52,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2532, Unknown=21, NotChecked=0, Total=2756 [2023-12-19 23:44:52,977 INFO L87 Difference]: Start difference. First operand 99 states and 129 transitions. Second operand has 53 states, 46 states have (on average 2.108695652173913) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (20), 1 states have call predecessors, (20), 13 states have return successors, (24), 16 states have call predecessors, (24), 19 states have call successors, (24) [2023-12-19 23:44:55,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:44:55,013 INFO L93 Difference]: Finished difference Result 161 states and 215 transitions. [2023-12-19 23:44:55,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 23:44:55,013 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 46 states have (on average 2.108695652173913) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (20), 1 states have call predecessors, (20), 13 states have return successors, (24), 16 states have call predecessors, (24), 19 states have call successors, (24) Word has length 66 [2023-12-19 23:44:55,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:44:55,014 INFO L225 Difference]: With dead ends: 161 [2023-12-19 23:44:55,014 INFO L226 Difference]: Without dead ends: 157 [2023-12-19 23:44:55,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1070 ImplicationChecksByTransitivity, 99.8s TimeCoverageRelationStatistics Valid=558, Invalid=4391, Unknown=21, NotChecked=0, Total=4970 [2023-12-19 23:44:55,016 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 65 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:44:55,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 700 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 23:44:55,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-19 23:44:55,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 98. [2023-12-19 23:44:55,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 68 states have (on average 1.088235294117647) internal successors, (74), 65 states have internal predecessors, (74), 10 states have call successors, (10), 4 states have call predecessors, (10), 19 states have return successors, (44), 28 states have call predecessors, (44), 10 states have call successors, (44) [2023-12-19 23:44:55,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 128 transitions. [2023-12-19 23:44:55,023 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 128 transitions. Word has length 66 [2023-12-19 23:44:55,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:44:55,023 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 128 transitions. [2023-12-19 23:44:55,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 46 states have (on average 2.108695652173913) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (20), 1 states have call predecessors, (20), 13 states have return successors, (24), 16 states have call predecessors, (24), 19 states have call successors, (24) [2023-12-19 23:44:55,024 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 128 transitions. [2023-12-19 23:44:55,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 23:44:55,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:44:55,024 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:44:55,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-19 23:44:55,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-19 23:44:55,231 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:44:55,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:44:55,231 INFO L85 PathProgramCache]: Analyzing trace with hash 89654876, now seen corresponding path program 13 times [2023-12-19 23:44:55,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:44:55,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918647258] [2023-12-19 23:44:55,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:44:55,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:44:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:55,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:44:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:55,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:44:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:55,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:44:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:55,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:44:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:55,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:44:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:55,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 23:44:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:56,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:44:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:56,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:44:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 33 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 23:44:56,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:44:56,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918647258] [2023-12-19 23:44:56,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918647258] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:44:56,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744189628] [2023-12-19 23:44:56,113 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 23:44:56,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:44:56,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:44:56,114 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:44:56,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 23:44:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:56,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-19 23:44:56,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:44:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 11 proven. 41 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-19 23:44:57,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:45:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 62 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 23:45:01,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744189628] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:45:01,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:45:01,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 26] total 56 [2023-12-19 23:45:01,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654613327] [2023-12-19 23:45:01,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:45:01,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-19 23:45:01,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:45:01,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-19 23:45:01,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2867, Unknown=0, NotChecked=0, Total=3080 [2023-12-19 23:45:01,806 INFO L87 Difference]: Start difference. First operand 98 states and 128 transitions. Second operand has 56 states, 50 states have (on average 2.02) internal successors, (101), 43 states have internal predecessors, (101), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (23), 16 states have call predecessors, (23), 18 states have call successors, (23) [2023-12-19 23:45:04,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:45:04,458 INFO L93 Difference]: Finished difference Result 188 states and 258 transitions. [2023-12-19 23:45:04,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 23:45:04,458 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 50 states have (on average 2.02) internal successors, (101), 43 states have internal predecessors, (101), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (23), 16 states have call predecessors, (23), 18 states have call successors, (23) Word has length 66 [2023-12-19 23:45:04,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:45:04,459 INFO L225 Difference]: With dead ends: 188 [2023-12-19 23:45:04,459 INFO L226 Difference]: Without dead ends: 184 [2023-12-19 23:45:04,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 107 SyntacticMatches, 6 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1353 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=724, Invalid=5438, Unknown=0, NotChecked=0, Total=6162 [2023-12-19 23:45:04,461 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 80 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 23:45:04,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 817 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 23:45:04,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-19 23:45:04,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 94. [2023-12-19 23:45:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 65 states have (on average 1.0923076923076922) internal successors, (71), 63 states have internal predecessors, (71), 10 states have call successors, (10), 4 states have call predecessors, (10), 18 states have return successors, (41), 26 states have call predecessors, (41), 10 states have call successors, (41) [2023-12-19 23:45:04,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2023-12-19 23:45:04,468 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 66 [2023-12-19 23:45:04,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:45:04,468 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2023-12-19 23:45:04,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 50 states have (on average 2.02) internal successors, (101), 43 states have internal predecessors, (101), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (23), 16 states have call predecessors, (23), 18 states have call successors, (23) [2023-12-19 23:45:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2023-12-19 23:45:04,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 23:45:04,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:45:04,469 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:45:04,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-19 23:45:04,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:45:04,677 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:45:04,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:45:04,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1625118244, now seen corresponding path program 14 times [2023-12-19 23:45:04,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:45:04,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197806446] [2023-12-19 23:45:04,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:45:04,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:45:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:04,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:45:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:04,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:45:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:04,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:45:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:04,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:45:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:45:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 23:45:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:45:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:45:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 28 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 23:45:05,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:45:05,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197806446] [2023-12-19 23:45:05,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197806446] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:45:05,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642696315] [2023-12-19 23:45:05,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 23:45:05,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:45:05,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:45:05,292 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:45:05,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-19 23:45:05,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 23:45:05,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:45:05,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-19 23:45:05,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:45:06,209 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 23:45:06,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:45:10,102 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 23:45:10,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642696315] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:45:10,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:45:10,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 25] total 48 [2023-12-19 23:45:10,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138265537] [2023-12-19 23:45:10,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:45:10,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-19 23:45:10,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:45:10,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-19 23:45:10,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2090, Unknown=0, NotChecked=0, Total=2256 [2023-12-19 23:45:10,104 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand has 48 states, 43 states have (on average 2.186046511627907) internal successors, (94), 35 states have internal predecessors, (94), 18 states have call successors, (19), 1 states have call predecessors, (19), 13 states have return successors, (23), 16 states have call predecessors, (23), 18 states have call successors, (23) [2023-12-19 23:45:11,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:45:11,421 INFO L93 Difference]: Finished difference Result 164 states and 224 transitions. [2023-12-19 23:45:11,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 23:45:11,421 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 43 states have (on average 2.186046511627907) internal successors, (94), 35 states have internal predecessors, (94), 18 states have call successors, (19), 1 states have call predecessors, (19), 13 states have return successors, (23), 16 states have call predecessors, (23), 18 states have call successors, (23) Word has length 66 [2023-12-19 23:45:11,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:45:11,422 INFO L225 Difference]: With dead ends: 164 [2023-12-19 23:45:11,422 INFO L226 Difference]: Without dead ends: 160 [2023-12-19 23:45:11,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 112 SyntacticMatches, 6 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=389, Invalid=3393, Unknown=0, NotChecked=0, Total=3782 [2023-12-19 23:45:11,423 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 76 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 23:45:11,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 590 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 23:45:11,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-19 23:45:11,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 86. [2023-12-19 23:45:11,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 59 states have (on average 1.1016949152542372) internal successors, (65), 59 states have internal predecessors, (65), 10 states have call successors, (10), 4 states have call predecessors, (10), 16 states have return successors, (35), 22 states have call predecessors, (35), 10 states have call successors, (35) [2023-12-19 23:45:11,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2023-12-19 23:45:11,429 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 66 [2023-12-19 23:45:11,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:45:11,429 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2023-12-19 23:45:11,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 43 states have (on average 2.186046511627907) internal successors, (94), 35 states have internal predecessors, (94), 18 states have call successors, (19), 1 states have call predecessors, (19), 13 states have return successors, (23), 16 states have call predecessors, (23), 18 states have call successors, (23) [2023-12-19 23:45:11,429 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2023-12-19 23:45:11,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 23:45:11,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:45:11,430 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:45:11,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-19 23:45:11,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:45:11,631 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:45:11,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:45:11,631 INFO L85 PathProgramCache]: Analyzing trace with hash -507596676, now seen corresponding path program 15 times [2023-12-19 23:45:11,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:45:11,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795552220] [2023-12-19 23:45:11,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:45:11,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:45:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:11,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:45:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:11,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:45:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:11,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:45:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:11,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:45:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:11,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:45:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:11,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 23:45:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:12,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:45:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:12,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:45:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:12,159 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 23:45:12,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:45:12,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795552220] [2023-12-19 23:45:12,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795552220] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:45:12,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566132243] [2023-12-19 23:45:12,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 23:45:12,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:45:12,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:45:12,161 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:45:12,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-19 23:45:12,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-19 23:45:12,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:45:12,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-19 23:45:12,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:45:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 23:45:13,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:45:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 3 proven. 63 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 23:45:17,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566132243] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:45:17,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:45:17,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 25] total 51 [2023-12-19 23:45:17,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23198353] [2023-12-19 23:45:17,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:45:17,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-19 23:45:17,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:45:17,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-19 23:45:17,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2385, Unknown=0, NotChecked=0, Total=2550 [2023-12-19 23:45:17,663 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand has 51 states, 48 states have (on average 2.125) internal successors, (102), 37 states have internal predecessors, (102), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (23), 17 states have call predecessors, (23), 18 states have call successors, (23) [2023-12-19 23:45:19,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:45:19,509 INFO L93 Difference]: Finished difference Result 152 states and 201 transitions. [2023-12-19 23:45:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 23:45:19,509 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 48 states have (on average 2.125) internal successors, (102), 37 states have internal predecessors, (102), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (23), 17 states have call predecessors, (23), 18 states have call successors, (23) Word has length 66 [2023-12-19 23:45:19,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:45:19,510 INFO L225 Difference]: With dead ends: 152 [2023-12-19 23:45:19,510 INFO L226 Difference]: Without dead ends: 148 [2023-12-19 23:45:19,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 109 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=415, Invalid=4277, Unknown=0, NotChecked=0, Total=4692 [2023-12-19 23:45:19,513 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 50 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:45:19,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 772 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 23:45:19,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-19 23:45:19,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 84. [2023-12-19 23:45:19,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 58 states have (on average 1.103448275862069) internal successors, (64), 57 states have internal predecessors, (64), 10 states have call successors, (10), 4 states have call predecessors, (10), 15 states have return successors, (33), 22 states have call predecessors, (33), 10 states have call successors, (33) [2023-12-19 23:45:19,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2023-12-19 23:45:19,520 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 66 [2023-12-19 23:45:19,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:45:19,521 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2023-12-19 23:45:19,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 48 states have (on average 2.125) internal successors, (102), 37 states have internal predecessors, (102), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (23), 17 states have call predecessors, (23), 18 states have call successors, (23) [2023-12-19 23:45:19,521 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2023-12-19 23:45:19,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 23:45:19,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:45:19,522 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:45:19,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-19 23:45:19,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-19 23:45:19,729 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:45:19,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:45:19,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1341085456, now seen corresponding path program 16 times [2023-12-19 23:45:19,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:45:19,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364500222] [2023-12-19 23:45:19,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:45:19,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:45:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:19,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:45:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:19,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:45:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:20,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:45:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:20,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:45:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:20,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:45:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:20,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:45:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:20,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 23:45:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:20,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:45:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:20,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:45:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:20,603 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 27 proven. 40 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 23:45:20,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:45:20,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364500222] [2023-12-19 23:45:20,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364500222] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:45:20,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034383181] [2023-12-19 23:45:20,603 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 23:45:20,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:45:20,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:45:20,604 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:45:20,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-19 23:45:20,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 23:45:20,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:45:20,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-19 23:45:20,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:45:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 20 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 23:45:21,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:45:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 5 proven. 87 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 23:45:27,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034383181] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:45:27,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:45:27,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 29] total 58 [2023-12-19 23:45:27,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282249087] [2023-12-19 23:45:27,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:45:27,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-19 23:45:27,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:45:27,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-19 23:45:27,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=3089, Unknown=0, NotChecked=0, Total=3306 [2023-12-19 23:45:27,969 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 58 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 43 states have internal predecessors, (107), 19 states have call successors, (21), 1 states have call predecessors, (21), 16 states have return successors, (26), 18 states have call predecessors, (26), 19 states have call successors, (26) [2023-12-19 23:45:30,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:45:30,848 INFO L93 Difference]: Finished difference Result 177 states and 237 transitions. [2023-12-19 23:45:30,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-19 23:45:30,848 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 43 states have internal predecessors, (107), 19 states have call successors, (21), 1 states have call predecessors, (21), 16 states have return successors, (26), 18 states have call predecessors, (26), 19 states have call successors, (26) Word has length 74 [2023-12-19 23:45:30,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:45:30,849 INFO L225 Difference]: With dead ends: 177 [2023-12-19 23:45:30,849 INFO L226 Difference]: Without dead ends: 173 [2023-12-19 23:45:30,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 122 SyntacticMatches, 8 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1548 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=842, Invalid=6298, Unknown=0, NotChecked=0, Total=7140 [2023-12-19 23:45:30,851 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 61 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 23:45:30,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 887 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 23:45:30,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-19 23:45:30,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 62. [2023-12-19 23:45:30,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 44 states have internal predecessors, (49), 9 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (16), 13 states have call predecessors, (16), 9 states have call successors, (16) [2023-12-19 23:45:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2023-12-19 23:45:30,855 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 74 [2023-12-19 23:45:30,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:45:30,856 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2023-12-19 23:45:30,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 43 states have internal predecessors, (107), 19 states have call successors, (21), 1 states have call predecessors, (21), 16 states have return successors, (26), 18 states have call predecessors, (26), 19 states have call successors, (26) [2023-12-19 23:45:30,856 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2023-12-19 23:45:30,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 23:45:30,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:45:30,856 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:45:30,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-19 23:45:31,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-19 23:45:31,057 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:45:31,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:45:31,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1210634724, now seen corresponding path program 6 times [2023-12-19 23:45:31,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:45:31,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618599001] [2023-12-19 23:45:31,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:45:31,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:45:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:31,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:45:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:31,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:45:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:31,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:45:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:31,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 23:45:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:31,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:45:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:31,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:45:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:31,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:45:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:31,521 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 23:45:31,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:45:31,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618599001] [2023-12-19 23:45:31,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618599001] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:45:31,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480438213] [2023-12-19 23:45:31,521 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 23:45:31,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:45:31,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:45:31,522 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:45:31,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-19 23:45:31,867 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-19 23:45:31,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:45:31,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-19 23:45:31,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:45:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 23:45:32,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:46:01,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480438213] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:46:01,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 23:46:01,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 30 [2023-12-19 23:46:01,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731045702] [2023-12-19 23:46:01,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 23:46:01,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 23:46:01,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:46:01,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 23:46:01,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1350, Unknown=4, NotChecked=0, Total=1482 [2023-12-19 23:46:01,526 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 30 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (11), 1 states have call predecessors, (11), 10 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2023-12-19 23:46:03,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:46:03,321 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2023-12-19 23:46:03,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 23:46:03,321 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (11), 1 states have call predecessors, (11), 10 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) Word has length 57 [2023-12-19 23:46:03,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:46:03,322 INFO L225 Difference]: With dead ends: 84 [2023-12-19 23:46:03,322 INFO L226 Difference]: Without dead ends: 75 [2023-12-19 23:46:03,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 81 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=263, Invalid=2085, Unknown=4, NotChecked=0, Total=2352 [2023-12-19 23:46:03,322 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 30 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:46:03,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 345 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 23:46:03,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-19 23:46:03,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2023-12-19 23:46:03,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 46 states have internal predecessors, (51), 9 states have call successors, (9), 4 states have call predecessors, (9), 10 states have return successors, (18), 14 states have call predecessors, (18), 9 states have call successors, (18) [2023-12-19 23:46:03,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2023-12-19 23:46:03,326 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 57 [2023-12-19 23:46:03,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:46:03,326 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2023-12-19 23:46:03,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (11), 1 states have call predecessors, (11), 10 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2023-12-19 23:46:03,326 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2023-12-19 23:46:03,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 23:46:03,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:46:03,327 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:46:03,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-19 23:46:03,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:46:03,533 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:46:03,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:46:03,533 INFO L85 PathProgramCache]: Analyzing trace with hash -927204484, now seen corresponding path program 17 times [2023-12-19 23:46:03,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:46:03,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864362122] [2023-12-19 23:46:03,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:46:03,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:46:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:03,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:03,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:03,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 23:46:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:04,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:46:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:04,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:46:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:04,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:46:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:04,455 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 23:46:04,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:46:04,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864362122] [2023-12-19 23:46:04,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864362122] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:46:04,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527134836] [2023-12-19 23:46:04,455 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 23:46:04,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:46:04,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:46:04,456 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:46:04,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-19 23:46:04,811 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-19 23:46:04,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:46:04,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-19 23:46:04,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:46:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 23:46:05,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:46:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-19 23:46:09,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527134836] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:46:09,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:46:09,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 21] total 40 [2023-12-19 23:46:09,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171565366] [2023-12-19 23:46:09,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:46:09,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-19 23:46:09,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:46:09,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-19 23:46:09,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1426, Unknown=0, NotChecked=0, Total=1560 [2023-12-19 23:46:09,757 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 40 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 33 states have internal predecessors, (81), 16 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (19), 11 states have call predecessors, (19), 16 states have call successors, (19) [2023-12-19 23:46:11,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:46:11,658 INFO L93 Difference]: Finished difference Result 88 states and 109 transitions. [2023-12-19 23:46:11,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 23:46:11,659 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 33 states have internal predecessors, (81), 16 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (19), 11 states have call predecessors, (19), 16 states have call successors, (19) Word has length 57 [2023-12-19 23:46:11,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:46:11,659 INFO L225 Difference]: With dead ends: 88 [2023-12-19 23:46:11,660 INFO L226 Difference]: Without dead ends: 79 [2023-12-19 23:46:11,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 96 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=274, Invalid=2176, Unknown=0, NotChecked=0, Total=2450 [2023-12-19 23:46:11,660 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 28 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:46:11,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 434 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 23:46:11,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-19 23:46:11,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2023-12-19 23:46:11,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 47 states have (on average 1.127659574468085) internal successors, (53), 48 states have internal predecessors, (53), 9 states have call successors, (9), 4 states have call predecessors, (9), 11 states have return successors, (20), 15 states have call predecessors, (20), 9 states have call successors, (20) [2023-12-19 23:46:11,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2023-12-19 23:46:11,664 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 57 [2023-12-19 23:46:11,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:46:11,664 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2023-12-19 23:46:11,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 33 states have internal predecessors, (81), 16 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (19), 11 states have call predecessors, (19), 16 states have call successors, (19) [2023-12-19 23:46:11,664 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2023-12-19 23:46:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-19 23:46:11,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:46:11,664 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:46:11,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-19 23:46:11,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:46:11,865 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:46:11,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:46:11,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1057578216, now seen corresponding path program 7 times [2023-12-19 23:46:11,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:46:11,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273679355] [2023-12-19 23:46:11,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:46:11,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:46:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:11,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:12,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:12,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:12,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:12,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 23:46:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:12,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:46:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:12,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:46:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:12,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:46:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:12,721 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 23:46:12,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:46:12,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273679355] [2023-12-19 23:46:12,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273679355] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:46:12,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774123820] [2023-12-19 23:46:12,722 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 23:46:12,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:46:12,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:46:12,723 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:46:12,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-19 23:46:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:13,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-19 23:46:13,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:46:13,993 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 23:46:13,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:46:20,151 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 23:46:20,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774123820] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:46:20,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:46:20,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 23] total 34 [2023-12-19 23:46:20,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310275017] [2023-12-19 23:46:20,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:46:20,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-19 23:46:20,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:46:20,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-19 23:46:20,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 23:46:20,152 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand has 34 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 28 states have internal predecessors, (80), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (20), 10 states have call predecessors, (20), 14 states have call successors, (20) [2023-12-19 23:46:22,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:46:22,370 INFO L93 Difference]: Finished difference Result 100 states and 125 transitions. [2023-12-19 23:46:22,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 23:46:22,371 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 28 states have internal predecessors, (80), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (20), 10 states have call predecessors, (20), 14 states have call successors, (20) Word has length 65 [2023-12-19 23:46:22,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:46:22,371 INFO L225 Difference]: With dead ends: 100 [2023-12-19 23:46:22,371 INFO L226 Difference]: Without dead ends: 96 [2023-12-19 23:46:22,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 117 SyntacticMatches, 10 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=216, Invalid=1764, Unknown=0, NotChecked=0, Total=1980 [2023-12-19 23:46:22,372 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 32 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 23:46:22,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 565 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 23:46:22,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-19 23:46:22,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 81. [2023-12-19 23:46:22,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 57 states have internal predecessors, (61), 10 states have call successors, (10), 4 states have call predecessors, (10), 15 states have return successors, (29), 19 states have call predecessors, (29), 10 states have call successors, (29) [2023-12-19 23:46:22,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 100 transitions. [2023-12-19 23:46:22,377 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 100 transitions. Word has length 65 [2023-12-19 23:46:22,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:46:22,377 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 100 transitions. [2023-12-19 23:46:22,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 28 states have internal predecessors, (80), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (20), 10 states have call predecessors, (20), 14 states have call successors, (20) [2023-12-19 23:46:22,377 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 100 transitions. [2023-12-19 23:46:22,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-19 23:46:22,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:46:22,377 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:46:22,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-19 23:46:22,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:46:22,587 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:46:22,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:46:22,587 INFO L85 PathProgramCache]: Analyzing trace with hash 927132040, now seen corresponding path program 18 times [2023-12-19 23:46:22,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:46:22,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342245766] [2023-12-19 23:46:22,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:46:22,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:46:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:22,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:22,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:22,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:22,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:23,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 23:46:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:23,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:46:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:23,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:46:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:23,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:46:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:23,551 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 23:46:23,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:46:23,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342245766] [2023-12-19 23:46:23,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342245766] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:46:23,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320199687] [2023-12-19 23:46:23,551 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 23:46:23,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:46:23,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:46:23,552 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:46:23,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-19 23:46:23,925 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-19 23:46:23,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:46:23,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-19 23:46:23,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:46:25,220 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 23:46:25,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:46:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-19 23:46:31,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320199687] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:46:31,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:46:31,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 22] total 42 [2023-12-19 23:46:31,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871963238] [2023-12-19 23:46:31,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:46:31,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-19 23:46:31,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:46:31,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-19 23:46:31,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 23:46:31,232 INFO L87 Difference]: Start difference. First operand 81 states and 100 transitions. Second operand has 42 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 33 states have internal predecessors, (85), 16 states have call successors, (18), 1 states have call predecessors, (18), 11 states have return successors, (22), 13 states have call predecessors, (22), 16 states have call successors, (22) [2023-12-19 23:46:33,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:46:33,376 INFO L93 Difference]: Finished difference Result 99 states and 124 transitions. [2023-12-19 23:46:33,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 23:46:33,377 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 33 states have internal predecessors, (85), 16 states have call successors, (18), 1 states have call predecessors, (18), 11 states have return successors, (22), 13 states have call predecessors, (22), 16 states have call successors, (22) Word has length 65 [2023-12-19 23:46:33,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:46:33,378 INFO L225 Difference]: With dead ends: 99 [2023-12-19 23:46:33,378 INFO L226 Difference]: Without dead ends: 90 [2023-12-19 23:46:33,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 111 SyntacticMatches, 10 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=288, Invalid=2468, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 23:46:33,379 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 38 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 23:46:33,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 480 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 23:46:33,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-19 23:46:33,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 81. [2023-12-19 23:46:33,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 57 states have internal predecessors, (61), 10 states have call successors, (10), 4 states have call predecessors, (10), 15 states have return successors, (29), 19 states have call predecessors, (29), 10 states have call successors, (29) [2023-12-19 23:46:33,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 100 transitions. [2023-12-19 23:46:33,383 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 100 transitions. Word has length 65 [2023-12-19 23:46:33,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:46:33,383 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 100 transitions. [2023-12-19 23:46:33,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 33 states have internal predecessors, (85), 16 states have call successors, (18), 1 states have call predecessors, (18), 11 states have return successors, (22), 13 states have call predecessors, (22), 16 states have call successors, (22) [2023-12-19 23:46:33,384 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 100 transitions. [2023-12-19 23:46:33,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-19 23:46:33,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:46:33,384 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:46:33,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-19 23:46:33,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-19 23:46:33,585 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:46:33,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:46:33,585 INFO L85 PathProgramCache]: Analyzing trace with hash 822154120, now seen corresponding path program 19 times [2023-12-19 23:46:33,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:46:33,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305737718] [2023-12-19 23:46:33,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:46:33,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:46:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:33,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:33,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:33,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:34,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:34,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 23:46:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:34,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:46:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:34,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:46:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:34,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:46:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:34,666 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 28 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 23:46:34,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:46:34,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305737718] [2023-12-19 23:46:34,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305737718] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:46:34,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128106853] [2023-12-19 23:46:34,666 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 23:46:34,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:46:34,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:46:34,667 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:46:34,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-19 23:46:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:35,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-19 23:46:35,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:46:36,547 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 11 proven. 28 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 23:46:36,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:46:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 23:46:43,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128106853] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:46:43,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:46:43,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 24] total 49 [2023-12-19 23:46:43,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649455564] [2023-12-19 23:46:43,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:46:43,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-19 23:46:43,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:46:43,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-19 23:46:43,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2176, Unknown=0, NotChecked=0, Total=2352 [2023-12-19 23:46:43,740 INFO L87 Difference]: Start difference. First operand 81 states and 100 transitions. Second operand has 49 states, 44 states have (on average 2.090909090909091) internal successors, (92), 38 states have internal predecessors, (92), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (24), 15 states have call predecessors, (24), 17 states have call successors, (24) [2023-12-19 23:46:47,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:46:47,262 INFO L93 Difference]: Finished difference Result 132 states and 171 transitions. [2023-12-19 23:46:47,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 23:46:47,262 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 44 states have (on average 2.090909090909091) internal successors, (92), 38 states have internal predecessors, (92), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (24), 15 states have call predecessors, (24), 17 states have call successors, (24) Word has length 65 [2023-12-19 23:46:47,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:46:47,263 INFO L225 Difference]: With dead ends: 132 [2023-12-19 23:46:47,263 INFO L226 Difference]: Without dead ends: 128 [2023-12-19 23:46:47,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 111 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=457, Invalid=3833, Unknown=0, NotChecked=0, Total=4290 [2023-12-19 23:46:47,264 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 59 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:46:47,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 782 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 23:46:47,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-19 23:46:47,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 94. [2023-12-19 23:46:47,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 64 states have (on average 1.09375) internal successors, (70), 65 states have internal predecessors, (70), 10 states have call successors, (10), 4 states have call predecessors, (10), 19 states have return successors, (40), 24 states have call predecessors, (40), 10 states have call successors, (40) [2023-12-19 23:46:47,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2023-12-19 23:46:47,269 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 65 [2023-12-19 23:46:47,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:46:47,269 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2023-12-19 23:46:47,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 44 states have (on average 2.090909090909091) internal successors, (92), 38 states have internal predecessors, (92), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (24), 15 states have call predecessors, (24), 17 states have call successors, (24) [2023-12-19 23:46:47,269 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2023-12-19 23:46:47,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-19 23:46:47,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:46:47,270 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:46:47,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-19 23:46:47,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-19 23:46:47,476 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:46:47,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:46:47,477 INFO L85 PathProgramCache]: Analyzing trace with hash 691707944, now seen corresponding path program 20 times [2023-12-19 23:46:47,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:46:47,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014013193] [2023-12-19 23:46:47,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:46:47,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:46:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:47,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:47,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:47,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:47,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:47,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 23:46:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:48,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:46:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:48,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:46:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:48,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:46:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:48,453 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 23:46:48,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:46:48,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014013193] [2023-12-19 23:46:48,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014013193] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:46:48,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028460162] [2023-12-19 23:46:48,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 23:46:48,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:46:48,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:46:48,455 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:46:48,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-19 23:46:48,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 23:46:48,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:46:48,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-19 23:46:48,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:46:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 23:46:49,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:46:52,131 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-19 23:46:52,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028460162] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:46:52,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:46:52,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 21] total 32 [2023-12-19 23:46:52,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515953881] [2023-12-19 23:46:52,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:46:52,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 23:46:52,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:46:52,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 23:46:52,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=899, Unknown=0, NotChecked=0, Total=992 [2023-12-19 23:46:52,132 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand has 32 states, 30 states have (on average 2.4) internal successors, (72), 27 states have internal predecessors, (72), 11 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (19), 12 states have call predecessors, (19), 11 states have call successors, (19) [2023-12-19 23:46:54,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:46:54,081 INFO L93 Difference]: Finished difference Result 116 states and 150 transitions. [2023-12-19 23:46:54,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 23:46:54,081 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.4) internal successors, (72), 27 states have internal predecessors, (72), 11 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (19), 12 states have call predecessors, (19), 11 states have call successors, (19) Word has length 65 [2023-12-19 23:46:54,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:46:54,082 INFO L225 Difference]: With dead ends: 116 [2023-12-19 23:46:54,082 INFO L226 Difference]: Without dead ends: 107 [2023-12-19 23:46:54,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=236, Invalid=1656, Unknown=0, NotChecked=0, Total=1892 [2023-12-19 23:46:54,083 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 26 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:46:54,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 395 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 23:46:54,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-19 23:46:54,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2023-12-19 23:46:54,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 65 states have (on average 1.0923076923076922) internal successors, (71), 65 states have internal predecessors, (71), 10 states have call successors, (10), 4 states have call predecessors, (10), 19 states have return successors, (40), 25 states have call predecessors, (40), 10 states have call successors, (40) [2023-12-19 23:46:54,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 121 transitions. [2023-12-19 23:46:54,087 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 121 transitions. Word has length 65 [2023-12-19 23:46:54,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:46:54,088 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 121 transitions. [2023-12-19 23:46:54,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.4) internal successors, (72), 27 states have internal predecessors, (72), 11 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (19), 12 states have call predecessors, (19), 11 states have call successors, (19) [2023-12-19 23:46:54,088 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 121 transitions. [2023-12-19 23:46:54,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-19 23:46:54,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:46:54,088 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:46:54,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-19 23:46:54,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-19 23:46:54,300 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:46:54,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:46:54,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1296440136, now seen corresponding path program 21 times [2023-12-19 23:46:54,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:46:54,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110120883] [2023-12-19 23:46:54,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:46:54,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:46:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:54,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:54,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:54,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:54,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:46:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:54,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 23:46:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:55,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:46:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:55,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:46:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:55,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:46:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:46:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 11 proven. 29 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 23:46:55,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:46:55,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110120883] [2023-12-19 23:46:55,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110120883] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:46:55,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353723935] [2023-12-19 23:46:55,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 23:46:55,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:46:55,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:46:55,336 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:46:55,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-19 23:46:55,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-19 23:46:55,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:46:55,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-19 23:46:55,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:46:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 11 proven. 26 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 23:46:57,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:47:04,139 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 2 proven. 57 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 23:47:04,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353723935] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:47:04,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:47:04,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 24] total 44 [2023-12-19 23:47:04,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649906445] [2023-12-19 23:47:04,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:47:04,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-19 23:47:04,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:47:04,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-19 23:47:04,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1739, Unknown=0, NotChecked=0, Total=1892 [2023-12-19 23:47:04,141 INFO L87 Difference]: Start difference. First operand 95 states and 121 transitions. Second operand has 44 states, 39 states have (on average 2.282051282051282) internal successors, (89), 35 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (22), 13 states have call predecessors, (22), 17 states have call successors, (22) [2023-12-19 23:47:06,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:47:06,867 INFO L93 Difference]: Finished difference Result 135 states and 173 transitions. [2023-12-19 23:47:06,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 23:47:06,870 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 39 states have (on average 2.282051282051282) internal successors, (89), 35 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (22), 13 states have call predecessors, (22), 17 states have call successors, (22) Word has length 65 [2023-12-19 23:47:06,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:47:06,870 INFO L225 Difference]: With dead ends: 135 [2023-12-19 23:47:06,871 INFO L226 Difference]: Without dead ends: 131 [2023-12-19 23:47:06,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 110 SyntacticMatches, 9 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=342, Invalid=2850, Unknown=0, NotChecked=0, Total=3192 [2023-12-19 23:47:06,871 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 71 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:47:06,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 564 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 23:47:06,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-19 23:47:06,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 98. [2023-12-19 23:47:06,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 67 states have (on average 1.0895522388059702) internal successors, (73), 67 states have internal predecessors, (73), 10 states have call successors, (10), 4 states have call predecessors, (10), 20 states have return successors, (43), 26 states have call predecessors, (43), 10 states have call successors, (43) [2023-12-19 23:47:06,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 126 transitions. [2023-12-19 23:47:06,877 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 126 transitions. Word has length 65 [2023-12-19 23:47:06,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:47:06,877 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 126 transitions. [2023-12-19 23:47:06,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 39 states have (on average 2.282051282051282) internal successors, (89), 35 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (22), 13 states have call predecessors, (22), 17 states have call successors, (22) [2023-12-19 23:47:06,877 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 126 transitions. [2023-12-19 23:47:06,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-19 23:47:06,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:47:06,878 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:47:06,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-19 23:47:07,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-19 23:47:07,092 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:47:07,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:47:07,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1061016040, now seen corresponding path program 22 times [2023-12-19 23:47:07,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:47:07,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891899507] [2023-12-19 23:47:07,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:47:07,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:47:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:47:07,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:47:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:47:07,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:47:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:47:07,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:47:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:47:07,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:47:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:47:07,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 23:47:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:47:07,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:47:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:47:07,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:47:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:47:07,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:47:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:47:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 23:47:08,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:47:08,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891899507] [2023-12-19 23:47:08,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891899507] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:47:08,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92238950] [2023-12-19 23:47:08,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 23:47:08,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:47:08,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:47:08,004 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:47:08,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-19 23:47:08,460 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 23:47:08,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:47:08,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-19 23:47:08,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:47:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 23:47:09,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:49:01,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92238950] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:49:01,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 23:49:01,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 26 [2023-12-19 23:49:01,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269777751] [2023-12-19 23:49:01,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 23:49:01,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 23:49:01,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:49:01,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 23:49:01,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=998, Unknown=26, NotChecked=0, Total=1122 [2023-12-19 23:49:01,237 INFO L87 Difference]: Start difference. First operand 98 states and 126 transitions. Second operand has 26 states, 25 states have (on average 2.12) internal successors, (53), 20 states have internal predecessors, (53), 8 states have call successors, (8), 1 states have call predecessors, (8), 11 states have return successors, (14), 10 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-19 23:49:03,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:49:03,202 INFO L93 Difference]: Finished difference Result 126 states and 162 transitions. [2023-12-19 23:49:03,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 23:49:03,203 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.12) internal successors, (53), 20 states have internal predecessors, (53), 8 states have call successors, (8), 1 states have call predecessors, (8), 11 states have return successors, (14), 10 states have call predecessors, (14), 8 states have call successors, (14) Word has length 65 [2023-12-19 23:49:03,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:49:03,203 INFO L225 Difference]: With dead ends: 126 [2023-12-19 23:49:03,203 INFO L226 Difference]: Without dead ends: 122 [2023-12-19 23:49:03,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 95 SyntacticMatches, 8 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 108.8s TimeCoverageRelationStatistics Valid=204, Invalid=1750, Unknown=26, NotChecked=0, Total=1980 [2023-12-19 23:49:03,204 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 40 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:49:03,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 467 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 23:49:03,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-19 23:49:03,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 102. [2023-12-19 23:49:03,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 69 states have internal predecessors, (76), 10 states have call successors, (10), 4 states have call predecessors, (10), 21 states have return successors, (45), 28 states have call predecessors, (45), 10 states have call successors, (45) [2023-12-19 23:49:03,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 131 transitions. [2023-12-19 23:49:03,209 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 131 transitions. Word has length 65 [2023-12-19 23:49:03,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:49:03,209 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 131 transitions. [2023-12-19 23:49:03,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.12) internal successors, (53), 20 states have internal predecessors, (53), 8 states have call successors, (8), 1 states have call predecessors, (8), 11 states have return successors, (14), 10 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-19 23:49:03,210 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 131 transitions. [2023-12-19 23:49:03,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 23:49:03,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:49:03,210 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:49:03,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-19 23:49:03,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:49:03,411 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:49:03,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:49:03,411 INFO L85 PathProgramCache]: Analyzing trace with hash -926745700, now seen corresponding path program 8 times [2023-12-19 23:49:03,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:49:03,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916885418] [2023-12-19 23:49:03,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:49:03,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:49:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:03,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:49:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:03,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:49:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:03,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:49:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:03,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:49:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:04,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:49:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:04,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 23:49:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:04,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:49:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:04,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:49:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:04,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:49:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:04,526 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 20 proven. 42 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-19 23:49:04,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:49:04,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916885418] [2023-12-19 23:49:04,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916885418] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:49:04,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3060083] [2023-12-19 23:49:04,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 23:49:04,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:49:04,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:49:04,527 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:49:04,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-19 23:49:04,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 23:49:04,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:49:04,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-19 23:49:04,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:49:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 17 proven. 46 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-19 23:49:06,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:49:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 4 proven. 84 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 23:49:15,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3060083] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:49:15,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:49:15,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 27] total 45 [2023-12-19 23:49:15,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684233911] [2023-12-19 23:49:15,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:49:15,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-19 23:49:15,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:49:15,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-19 23:49:15,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1838, Unknown=0, NotChecked=0, Total=1980 [2023-12-19 23:49:15,035 INFO L87 Difference]: Start difference. First operand 102 states and 131 transitions. Second operand has 45 states, 42 states have (on average 2.238095238095238) internal successors, (94), 35 states have internal predecessors, (94), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (24), 14 states have call predecessors, (24), 17 states have call successors, (24) [2023-12-19 23:49:17,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:49:17,741 INFO L93 Difference]: Finished difference Result 144 states and 190 transitions. [2023-12-19 23:49:17,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 23:49:17,742 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 42 states have (on average 2.238095238095238) internal successors, (94), 35 states have internal predecessors, (94), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (24), 14 states have call predecessors, (24), 17 states have call successors, (24) Word has length 73 [2023-12-19 23:49:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:49:17,744 INFO L225 Difference]: With dead ends: 144 [2023-12-19 23:49:17,744 INFO L226 Difference]: Without dead ends: 140 [2023-12-19 23:49:17,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 129 SyntacticMatches, 8 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=373, Invalid=3049, Unknown=0, NotChecked=0, Total=3422 [2023-12-19 23:49:17,745 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 41 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 23:49:17,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 666 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 23:49:17,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-19 23:49:17,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 96. [2023-12-19 23:49:17,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 65 states have internal predecessors, (72), 10 states have call successors, (10), 4 states have call predecessors, (10), 19 states have return successors, (39), 26 states have call predecessors, (39), 10 states have call successors, (39) [2023-12-19 23:49:17,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 121 transitions. [2023-12-19 23:49:17,779 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 121 transitions. Word has length 73 [2023-12-19 23:49:17,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:49:17,779 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 121 transitions. [2023-12-19 23:49:17,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 42 states have (on average 2.238095238095238) internal successors, (94), 35 states have internal predecessors, (94), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (24), 14 states have call predecessors, (24), 17 states have call successors, (24) [2023-12-19 23:49:17,780 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 121 transitions. [2023-12-19 23:49:17,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 23:49:17,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:49:17,781 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:49:17,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-19 23:49:17,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-12-19 23:49:17,981 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:49:17,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:49:17,981 INFO L85 PathProgramCache]: Analyzing trace with hash 869545788, now seen corresponding path program 23 times [2023-12-19 23:49:17,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:49:17,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062267130] [2023-12-19 23:49:17,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:49:17,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:49:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:18,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:49:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:18,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:49:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:18,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:49:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:18,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:49:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:18,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:49:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:18,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 23:49:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:18,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:49:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:18,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:49:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:18,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:49:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 11 proven. 36 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-19 23:49:18,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:49:18,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062267130] [2023-12-19 23:49:18,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062267130] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:49:18,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549564417] [2023-12-19 23:49:18,938 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 23:49:18,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:49:18,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:49:18,939 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:49:18,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-19 23:49:19,406 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-19 23:49:19,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:49:19,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-19 23:49:19,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:49:20,297 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 36 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-19 23:49:20,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:49:28,505 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 23:49:28,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549564417] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:49:28,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:49:28,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 24] total 35 [2023-12-19 23:49:28,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239233077] [2023-12-19 23:49:28,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:49:28,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-19 23:49:28,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:49:28,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-19 23:49:28,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 23:49:28,507 INFO L87 Difference]: Start difference. First operand 96 states and 121 transitions. Second operand has 35 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 28 states have internal predecessors, (83), 14 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (23), 11 states have call predecessors, (23), 14 states have call successors, (23) [2023-12-19 23:49:30,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:49:30,647 INFO L93 Difference]: Finished difference Result 130 states and 164 transitions. [2023-12-19 23:49:30,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 23:49:30,647 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 28 states have internal predecessors, (83), 14 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (23), 11 states have call predecessors, (23), 14 states have call successors, (23) Word has length 73 [2023-12-19 23:49:30,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:49:30,648 INFO L225 Difference]: With dead ends: 130 [2023-12-19 23:49:30,648 INFO L226 Difference]: Without dead ends: 126 [2023-12-19 23:49:30,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 133 SyntacticMatches, 13 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2023-12-19 23:49:30,649 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 73 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 23:49:30,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 497 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 23:49:30,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-19 23:49:30,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 104. [2023-12-19 23:49:30,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 69 states have internal predecessors, (78), 10 states have call successors, (10), 4 states have call predecessors, (10), 21 states have return successors, (45), 30 states have call predecessors, (45), 10 states have call successors, (45) [2023-12-19 23:49:30,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 133 transitions. [2023-12-19 23:49:30,654 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 133 transitions. Word has length 73 [2023-12-19 23:49:30,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:49:30,662 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 133 transitions. [2023-12-19 23:49:30,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 28 states have internal predecessors, (83), 14 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (23), 11 states have call predecessors, (23), 14 states have call successors, (23) [2023-12-19 23:49:30,662 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 133 transitions. [2023-12-19 23:49:30,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 23:49:30,663 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:49:30,663 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:49:30,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-19 23:49:30,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:49:30,870 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:49:30,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:49:30,870 INFO L85 PathProgramCache]: Analyzing trace with hash 58978396, now seen corresponding path program 24 times [2023-12-19 23:49:30,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:49:30,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237306516] [2023-12-19 23:49:30,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:49:30,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:49:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:30,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:49:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:31,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:49:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:31,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:49:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:31,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:49:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:31,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:49:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:31,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 23:49:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:31,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:49:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:31,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:49:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:31,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:49:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:49:32,071 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 15 proven. 43 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-19 23:49:32,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:49:32,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237306516] [2023-12-19 23:49:32,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237306516] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:49:32,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171481845] [2023-12-19 23:49:32,071 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 23:49:32,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:49:32,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:49:32,080 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:49:32,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-19 23:49:32,576 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-19 23:49:32,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:49:32,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-19 23:49:32,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:49:34,940 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 45 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-19 23:49:34,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:50:00,207 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse10 (div |c_gcd_#in~y2| 2))) (let ((.cse8 (* 3 .cse10))) (let ((.cse1 (< |c_gcd_#res| (+ .cse10 1))) (.cse14 (* 6 (div (+ |c_gcd_#in~y1| (- 5)) 2))) (.cse6 (+ .cse8 8)) (.cse3 (* 3 |c_gcd_#res|)) (.cse19 (+ |c_gcd_#in~y2| 1)) (.cse17 (* 6 |c_gcd_#res|)) (.cse5 (* 6 .cse10)) (.cse0 (* 2 .cse10)) (.cse24 (* 2 |c_gcd_#res|))) (and (or (forall ((v_y_407 Int)) (< (+ (* 2 (div (+ (* 3 v_y_407) (- 2)) 6)) |c_gcd_#res| 1) (+ v_y_407 .cse0))) .cse1) (or (forall ((v_y_407 Int)) (let ((.cse2 (* 3 v_y_407))) (let ((.cse4 (mod (+ .cse2 4) 6))) (or (< (+ (* (div (+ .cse2 (- 2)) 6) 6) .cse3 .cse4 4) (+ .cse2 .cse5)) (< (+ .cse3 .cse4) .cse6) (< .cse4 4))))) .cse1) (or (forall ((v_y_407 Int)) (let ((.cse9 (* 3 v_y_407))) (let ((.cse7 (mod (+ .cse9 4) 6))) (or (< (+ .cse3 .cse7) (+ .cse8 5)) (< .cse7 4) (< (+ 2 (* 2 (div (+ .cse9 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0)))))) (< |c_gcd_#res| .cse10)) (<= (+ |c_gcd_#res| 1) |c_gcd_#in~y2|) (or (forall ((v_y_407 Int)) (let ((.cse11 (* 3 v_y_407))) (or (< (mod (+ .cse11 4) 6) 4) (< (+ 2 (* 2 (div (+ .cse11 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0))))) .cse1) (<= (+ 2 |c_gcd_#res|) |c_gcd_#in~y1|) (forall ((v_y_361 Int)) (let ((.cse13 (* 3 v_y_361))) (let ((.cse12 (mod (+ .cse13 4) 6))) (or (< (+ .cse12 (* 6 (div (+ .cse13 (- 2)) 6)) .cse3) (+ .cse13 .cse14 10)) (< (+ .cse12 .cse3) (+ 7 .cse8)) (< .cse12 4))))) (forall ((v_y_361 Int)) (let ((.cse16 (* 3 v_y_361))) (let ((.cse15 (mod (+ .cse16 4) 6))) (or (< .cse15 4) (< (+ .cse15 (* 6 (div (+ .cse16 (- 2)) 6)) .cse3) (+ .cse16 .cse14 8)) (< (+ .cse15 .cse3) .cse6))))) (forall ((v_y_506 Int) (v_y_504 Int)) (let ((.cse18 (* 3 v_y_506))) (or (< (+ .cse17 (mod (+ 4 .cse18) 6)) (+ 5 (* 6 v_y_504) .cse18)) (< (+ 3 (* 2 v_y_504) (* 2 (div (+ (- 2) .cse18) 6))) |c_gcd_#in~y2|) (< (+ (* v_y_504 4) (* 2 v_y_506)) .cse19)))) (forall ((v_y_506 Int) (v_y_548 Int)) (let ((.cse22 (* 3 v_y_506))) (let ((.cse20 (mod (+ 4 .cse22) 6)) (.cse21 (* 6 v_y_548))) (or (< .cse20 (+ .cse21 2)) (< (+ 5 .cse21) .cse20) (< (+ (* 6 (div (+ (- 2) .cse22) 6)) .cse17 .cse20 1) (+ .cse21 .cse5 .cse22)))))) (forall ((v_y_506 Int)) (let ((.cse23 (* 3 v_y_506))) (or (< (mod (+ 4 .cse23) 6) 4) (< (+ .cse24 (* 2 (div (+ (- 2) .cse23) 6)) 1) (+ v_y_506 .cse0))))) (forall ((v_y_506 Int)) (let ((.cse25 (* 3 v_y_506))) (< (+ (* 6 (div (+ (- 2) .cse25) 6)) .cse17 (mod (+ 4 .cse25) 6) 1) (+ .cse5 .cse25)))) (forall ((v_y_506 Int) (v_y_513 Int)) (let ((.cse26 (* 3 v_y_506))) (let ((.cse27 (mod (+ 4 .cse26) 6))) (or (< (+ (* 6 (div (+ (- 2) .cse26) 6)) .cse17 .cse27 1) (+ .cse5 .cse26)) (< 1 v_y_513) (< (+ (* 3 v_y_513) .cse27) 3))))) (<= |c_gcd_#res| (div (+ (- 1) |c_gcd_#in~y1|) 2)) (forall ((v_y_506 Int)) (let ((.cse29 (* 3 v_y_506))) (let ((.cse28 (mod (+ 4 .cse29) 6))) (or (< .cse28 4) (< (+ (* 6 (div (+ (- 2) .cse29) 6)) .cse17 .cse28 1) (+ .cse5 .cse29)))))) (forall ((v_y_407 Int) (v_y_410 Int)) (let ((.cse30 (* 3 v_y_407))) (or (< (+ (* 2 (div (+ .cse30 (- 2)) 6)) 3 (* 2 v_y_410)) |c_gcd_#in~y2|) (< (+ .cse3 (mod (+ .cse30 4) 6)) (+ .cse30 2 (* 6 v_y_410))) (< (+ (* 2 v_y_407) (* v_y_410 4)) .cse19)))) (<= .cse24 |c_gcd_#in~y2|) (forall ((v_y_506 Int)) (< (+ .cse24 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0 1))) (forall ((v_y_506 Int)) (let ((.cse32 (* 3 v_y_506))) (let ((.cse31 (mod (+ 4 .cse32) 6))) (or (< .cse31 4) (< (+ (* 6 (div (+ (- 2) .cse32) 6)) .cse17 .cse31) (+ .cse5 .cse32 1)))))) (forall ((v_y_506 Int)) (< (+ .cse24 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0))) (or (< .cse24 |c_gcd_#in~y1|) (< (+ 2 (* 2 (div |c_gcd_#res| 2))) |c_gcd_#in~y1|)))))) is different from false [2023-12-19 23:50:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 2 proven. 74 refuted. 0 times theorem prover too weak. 16 trivial. 4 not checked. [2023-12-19 23:50:02,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171481845] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:50:02,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:50:02,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 29] total 57 [2023-12-19 23:50:02,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844972065] [2023-12-19 23:50:02,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:50:02,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-19 23:50:02,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:50:02,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-19 23:50:02,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2882, Unknown=1, NotChecked=108, Total=3192 [2023-12-19 23:50:02,781 INFO L87 Difference]: Start difference. First operand 104 states and 133 transitions. Second operand has 57 states, 50 states have (on average 2.12) internal successors, (106), 44 states have internal predecessors, (106), 21 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (27), 17 states have call predecessors, (27), 21 states have call successors, (27) [2023-12-19 23:50:08,896 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse10 (div |c_gcd_#in~y2| 2))) (let ((.cse8 (* 3 .cse10))) (let ((.cse1 (< |c_gcd_#res| (+ .cse10 1))) (.cse14 (* 6 (div (+ |c_gcd_#in~y1| (- 5)) 2))) (.cse6 (+ .cse8 8)) (.cse3 (* 3 |c_gcd_#res|)) (.cse19 (+ |c_gcd_#in~y2| 1)) (.cse17 (* 6 |c_gcd_#res|)) (.cse5 (* 6 .cse10)) (.cse0 (* 2 .cse10)) (.cse24 (* 2 |c_gcd_#res|))) (and (or (forall ((v_y_407 Int)) (< (+ (* 2 (div (+ (* 3 v_y_407) (- 2)) 6)) |c_gcd_#res| 1) (+ v_y_407 .cse0))) .cse1) (<= c_gcd_~y2 |c_gcd_#in~y2|) (or (forall ((v_y_407 Int)) (let ((.cse2 (* 3 v_y_407))) (let ((.cse4 (mod (+ .cse2 4) 6))) (or (< (+ (* (div (+ .cse2 (- 2)) 6) 6) .cse3 .cse4 4) (+ .cse2 .cse5)) (< (+ .cse3 .cse4) .cse6) (< .cse4 4))))) .cse1) (or (forall ((v_y_407 Int)) (let ((.cse9 (* 3 v_y_407))) (let ((.cse7 (mod (+ .cse9 4) 6))) (or (< (+ .cse3 .cse7) (+ .cse8 5)) (< .cse7 4) (< (+ 2 (* 2 (div (+ .cse9 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0)))))) (< |c_gcd_#res| .cse10)) (<= (+ |c_gcd_#res| 1) |c_gcd_#in~y2|) (or (forall ((v_y_407 Int)) (let ((.cse11 (* 3 v_y_407))) (or (< (mod (+ .cse11 4) 6) 4) (< (+ 2 (* 2 (div (+ .cse11 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0))))) .cse1) (<= (+ 2 |c_gcd_#res|) |c_gcd_#in~y1|) (= c_gcd_~y2 |c_gcd_#in~y2|) (forall ((v_y_361 Int)) (let ((.cse13 (* 3 v_y_361))) (let ((.cse12 (mod (+ .cse13 4) 6))) (or (< (+ .cse12 (* 6 (div (+ .cse13 (- 2)) 6)) .cse3) (+ .cse13 .cse14 10)) (< (+ .cse12 .cse3) (+ 7 .cse8)) (< .cse12 4))))) (<= (+ (* |c_gcd_#res| 4) 1) |c_gcd_#in~y1|) (forall ((v_y_361 Int)) (let ((.cse16 (* 3 v_y_361))) (let ((.cse15 (mod (+ .cse16 4) 6))) (or (< .cse15 4) (< (+ .cse15 (* 6 (div (+ .cse16 (- 2)) 6)) .cse3) (+ .cse16 .cse14 8)) (< (+ .cse15 .cse3) .cse6))))) (forall ((v_y_506 Int) (v_y_504 Int)) (let ((.cse18 (* 3 v_y_506))) (or (< (+ .cse17 (mod (+ 4 .cse18) 6)) (+ 5 (* 6 v_y_504) .cse18)) (< (+ 3 (* 2 v_y_504) (* 2 (div (+ (- 2) .cse18) 6))) |c_gcd_#in~y2|) (< (+ (* v_y_504 4) (* 2 v_y_506)) .cse19)))) (forall ((v_y_506 Int) (v_y_548 Int)) (let ((.cse22 (* 3 v_y_506))) (let ((.cse20 (mod (+ 4 .cse22) 6)) (.cse21 (* 6 v_y_548))) (or (< .cse20 (+ .cse21 2)) (< (+ 5 .cse21) .cse20) (< (+ (* 6 (div (+ (- 2) .cse22) 6)) .cse17 .cse20 1) (+ .cse21 .cse5 .cse22)))))) (forall ((v_y_506 Int)) (let ((.cse23 (* 3 v_y_506))) (or (< (mod (+ 4 .cse23) 6) 4) (< (+ .cse24 (* 2 (div (+ (- 2) .cse23) 6)) 1) (+ v_y_506 .cse0))))) (forall ((v_y_506 Int)) (let ((.cse25 (* 3 v_y_506))) (< (+ (* 6 (div (+ (- 2) .cse25) 6)) .cse17 (mod (+ 4 .cse25) 6) 1) (+ .cse5 .cse25)))) (forall ((v_y_506 Int) (v_y_513 Int)) (let ((.cse26 (* 3 v_y_506))) (let ((.cse27 (mod (+ 4 .cse26) 6))) (or (< (+ (* 6 (div (+ (- 2) .cse26) 6)) .cse17 .cse27 1) (+ .cse5 .cse26)) (< 1 v_y_513) (< (+ (* 3 v_y_513) .cse27) 3))))) (<= |c_gcd_#res| (div (+ (- 1) |c_gcd_#in~y1|) 2)) (forall ((v_y_506 Int)) (let ((.cse29 (* 3 v_y_506))) (let ((.cse28 (mod (+ 4 .cse29) 6))) (or (< .cse28 4) (< (+ (* 6 (div (+ (- 2) .cse29) 6)) .cse17 .cse28 1) (+ .cse5 .cse29)))))) (<= (+ c_gcd_~y2 1) |c_gcd_#in~y1|) (forall ((v_y_407 Int) (v_y_410 Int)) (let ((.cse30 (* 3 v_y_407))) (or (< (+ (* 2 (div (+ .cse30 (- 2)) 6)) 3 (* 2 v_y_410)) |c_gcd_#in~y2|) (< (+ .cse3 (mod (+ .cse30 4) 6)) (+ .cse30 2 (* 6 v_y_410))) (< (+ (* 2 v_y_407) (* v_y_410 4)) .cse19)))) (= |c_gcd_#in~y1| c_gcd_~y1) (<= .cse24 |c_gcd_#in~y2|) (forall ((v_y_506 Int)) (< (+ .cse24 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0 1))) (<= 1 c_gcd_~y2) (<= (+ .cse24 1) |c_gcd_#in~y1|) (forall ((v_y_506 Int)) (let ((.cse32 (* 3 v_y_506))) (let ((.cse31 (mod (+ 4 .cse32) 6))) (or (< .cse31 4) (< (+ (* 6 (div (+ (- 2) .cse32) 6)) .cse17 .cse31) (+ .cse5 .cse32 1)))))) (forall ((v_y_506 Int)) (< (+ .cse24 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0))) (<= 1 c_gcd_~y1) (or (< .cse24 |c_gcd_#in~y1|) (< (+ 2 (* 2 (div |c_gcd_#res| 2))) |c_gcd_#in~y1|)))))) is different from false [2023-12-19 23:50:13,710 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse10 (div |c_gcd_#in~y2| 2))) (let ((.cse8 (* 3 .cse10))) (let ((.cse1 (< |c_gcd_#res| (+ .cse10 1))) (.cse14 (* 6 (div (+ |c_gcd_#in~y1| (- 5)) 2))) (.cse6 (+ .cse8 8)) (.cse3 (* 3 |c_gcd_#res|)) (.cse19 (+ |c_gcd_#in~y2| 1)) (.cse17 (* 6 |c_gcd_#res|)) (.cse5 (* 6 .cse10)) (.cse0 (* 2 .cse10)) (.cse24 (* 2 |c_gcd_#res|))) (and (or (forall ((v_y_407 Int)) (< (+ (* 2 (div (+ (* 3 v_y_407) (- 2)) 6)) |c_gcd_#res| 1) (+ v_y_407 .cse0))) .cse1) (or (forall ((v_y_407 Int)) (let ((.cse2 (* 3 v_y_407))) (let ((.cse4 (mod (+ .cse2 4) 6))) (or (< (+ (* (div (+ .cse2 (- 2)) 6) 6) .cse3 .cse4 4) (+ .cse2 .cse5)) (< (+ .cse3 .cse4) .cse6) (< .cse4 4))))) .cse1) (or (forall ((v_y_407 Int)) (let ((.cse9 (* 3 v_y_407))) (let ((.cse7 (mod (+ .cse9 4) 6))) (or (< (+ .cse3 .cse7) (+ .cse8 5)) (< .cse7 4) (< (+ 2 (* 2 (div (+ .cse9 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0)))))) (< |c_gcd_#res| .cse10)) (<= (+ |c_gcd_#res| 1) |c_gcd_#in~y2|) (or (forall ((v_y_407 Int)) (let ((.cse11 (* 3 v_y_407))) (or (< (mod (+ .cse11 4) 6) 4) (< (+ 2 (* 2 (div (+ .cse11 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0))))) .cse1) (<= (+ 2 |c_gcd_#res|) |c_gcd_#in~y1|) (forall ((v_y_361 Int)) (let ((.cse13 (* 3 v_y_361))) (let ((.cse12 (mod (+ .cse13 4) 6))) (or (< (+ .cse12 (* 6 (div (+ .cse13 (- 2)) 6)) .cse3) (+ .cse13 .cse14 10)) (< (+ .cse12 .cse3) (+ 7 .cse8)) (< .cse12 4))))) (<= (+ (* |c_gcd_#res| 4) 1) |c_gcd_#in~y1|) (forall ((v_y_361 Int)) (let ((.cse16 (* 3 v_y_361))) (let ((.cse15 (mod (+ .cse16 4) 6))) (or (< .cse15 4) (< (+ .cse15 (* 6 (div (+ .cse16 (- 2)) 6)) .cse3) (+ .cse16 .cse14 8)) (< (+ .cse15 .cse3) .cse6))))) (forall ((v_y_506 Int) (v_y_504 Int)) (let ((.cse18 (* 3 v_y_506))) (or (< (+ .cse17 (mod (+ 4 .cse18) 6)) (+ 5 (* 6 v_y_504) .cse18)) (< (+ 3 (* 2 v_y_504) (* 2 (div (+ (- 2) .cse18) 6))) |c_gcd_#in~y2|) (< (+ (* v_y_504 4) (* 2 v_y_506)) .cse19)))) (forall ((v_y_506 Int) (v_y_548 Int)) (let ((.cse22 (* 3 v_y_506))) (let ((.cse20 (mod (+ 4 .cse22) 6)) (.cse21 (* 6 v_y_548))) (or (< .cse20 (+ .cse21 2)) (< (+ 5 .cse21) .cse20) (< (+ (* 6 (div (+ (- 2) .cse22) 6)) .cse17 .cse20 1) (+ .cse21 .cse5 .cse22)))))) (forall ((v_y_506 Int)) (let ((.cse23 (* 3 v_y_506))) (or (< (mod (+ 4 .cse23) 6) 4) (< (+ .cse24 (* 2 (div (+ (- 2) .cse23) 6)) 1) (+ v_y_506 .cse0))))) (forall ((v_y_506 Int)) (let ((.cse25 (* 3 v_y_506))) (< (+ (* 6 (div (+ (- 2) .cse25) 6)) .cse17 (mod (+ 4 .cse25) 6) 1) (+ .cse5 .cse25)))) (forall ((v_y_506 Int) (v_y_513 Int)) (let ((.cse26 (* 3 v_y_506))) (let ((.cse27 (mod (+ 4 .cse26) 6))) (or (< (+ (* 6 (div (+ (- 2) .cse26) 6)) .cse17 .cse27 1) (+ .cse5 .cse26)) (< 1 v_y_513) (< (+ (* 3 v_y_513) .cse27) 3))))) (<= |c_gcd_#res| (div (+ (- 1) |c_gcd_#in~y1|) 2)) (forall ((v_y_506 Int)) (let ((.cse29 (* 3 v_y_506))) (let ((.cse28 (mod (+ 4 .cse29) 6))) (or (< .cse28 4) (< (+ (* 6 (div (+ (- 2) .cse29) 6)) .cse17 .cse28 1) (+ .cse5 .cse29)))))) (forall ((v_y_407 Int) (v_y_410 Int)) (let ((.cse30 (* 3 v_y_407))) (or (< (+ (* 2 (div (+ .cse30 (- 2)) 6)) 3 (* 2 v_y_410)) |c_gcd_#in~y2|) (< (+ .cse3 (mod (+ .cse30 4) 6)) (+ .cse30 2 (* 6 v_y_410))) (< (+ (* 2 v_y_407) (* v_y_410 4)) .cse19)))) (<= .cse24 |c_gcd_#in~y2|) (forall ((v_y_506 Int)) (< (+ .cse24 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0 1))) (<= (+ .cse24 1) |c_gcd_#in~y1|) (forall ((v_y_506 Int)) (let ((.cse32 (* 3 v_y_506))) (let ((.cse31 (mod (+ 4 .cse32) 6))) (or (< .cse31 4) (< (+ (* 6 (div (+ (- 2) .cse32) 6)) .cse17 .cse31) (+ .cse5 .cse32 1)))))) (forall ((v_y_506 Int)) (< (+ .cse24 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0))) (or (< .cse24 |c_gcd_#in~y1|) (< (+ 2 (* 2 (div |c_gcd_#res| 2))) |c_gcd_#in~y1|)))))) is different from false [2023-12-19 23:50:17,737 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse10 (div |c_gcd_#in~y2| 2))) (let ((.cse8 (* 3 .cse10))) (let ((.cse1 (< |c_gcd_#res| (+ .cse10 1))) (.cse15 (* 6 (div (+ |c_gcd_#in~y1| (- 5)) 2))) (.cse6 (+ .cse8 8)) (.cse3 (* 3 |c_gcd_#res|)) (.cse20 (+ |c_gcd_#in~y2| 1)) (.cse18 (* 6 |c_gcd_#res|)) (.cse5 (* 6 .cse10)) (.cse0 (* 2 .cse10)) (.cse12 (* 2 |c_gcd_#res|))) (and (or (forall ((v_y_407 Int)) (< (+ (* 2 (div (+ (* 3 v_y_407) (- 2)) 6)) |c_gcd_#res| 1) (+ v_y_407 .cse0))) .cse1) (or (forall ((v_y_407 Int)) (let ((.cse2 (* 3 v_y_407))) (let ((.cse4 (mod (+ .cse2 4) 6))) (or (< (+ (* (div (+ .cse2 (- 2)) 6) 6) .cse3 .cse4 4) (+ .cse2 .cse5)) (< (+ .cse3 .cse4) .cse6) (< .cse4 4))))) .cse1) (or (forall ((v_y_407 Int)) (let ((.cse9 (* 3 v_y_407))) (let ((.cse7 (mod (+ .cse9 4) 6))) (or (< (+ .cse3 .cse7) (+ .cse8 5)) (< .cse7 4) (< (+ 2 (* 2 (div (+ .cse9 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0)))))) (< |c_gcd_#res| .cse10)) (<= (+ |c_gcd_#res| 1) |c_gcd_#in~y2|) (or (forall ((v_y_407 Int)) (let ((.cse11 (* 3 v_y_407))) (or (< (mod (+ .cse11 4) 6) 4) (< (+ 2 (* 2 (div (+ .cse11 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0))))) .cse1) (<= (+ 2 |c_gcd_#res|) |c_gcd_#in~y1|) (<= (+ .cse12 3) |c_gcd_#in~y2|) (<= (+ (* |c_gcd_#res| 4) 1) |c_gcd_#in~y2|) (forall ((v_y_361 Int)) (let ((.cse14 (* 3 v_y_361))) (let ((.cse13 (mod (+ .cse14 4) 6))) (or (< (+ .cse13 (* 6 (div (+ .cse14 (- 2)) 6)) .cse3) (+ .cse14 .cse15 10)) (< (+ .cse13 .cse3) (+ 7 .cse8)) (< .cse13 4))))) (forall ((v_y_361 Int)) (let ((.cse17 (* 3 v_y_361))) (let ((.cse16 (mod (+ .cse17 4) 6))) (or (< .cse16 4) (< (+ .cse16 (* 6 (div (+ .cse17 (- 2)) 6)) .cse3) (+ .cse17 .cse15 8)) (< (+ .cse16 .cse3) .cse6))))) (forall ((v_y_506 Int) (v_y_504 Int)) (let ((.cse19 (* 3 v_y_506))) (or (< (+ .cse18 (mod (+ 4 .cse19) 6)) (+ 5 (* 6 v_y_504) .cse19)) (< (+ 3 (* 2 v_y_504) (* 2 (div (+ (- 2) .cse19) 6))) |c_gcd_#in~y2|) (< (+ (* v_y_504 4) (* 2 v_y_506)) .cse20)))) (forall ((v_y_506 Int) (v_y_548 Int)) (let ((.cse23 (* 3 v_y_506))) (let ((.cse21 (mod (+ 4 .cse23) 6)) (.cse22 (* 6 v_y_548))) (or (< .cse21 (+ .cse22 2)) (< (+ 5 .cse22) .cse21) (< (+ (* 6 (div (+ (- 2) .cse23) 6)) .cse18 .cse21 1) (+ .cse22 .cse5 .cse23)))))) (forall ((v_y_506 Int)) (let ((.cse24 (* 3 v_y_506))) (or (< (mod (+ 4 .cse24) 6) 4) (< (+ .cse12 (* 2 (div (+ (- 2) .cse24) 6)) 1) (+ v_y_506 .cse0))))) (forall ((v_y_506 Int)) (let ((.cse25 (* 3 v_y_506))) (< (+ (* 6 (div (+ (- 2) .cse25) 6)) .cse18 (mod (+ 4 .cse25) 6) 1) (+ .cse5 .cse25)))) (forall ((v_y_506 Int) (v_y_513 Int)) (let ((.cse26 (* 3 v_y_506))) (let ((.cse27 (mod (+ 4 .cse26) 6))) (or (< (+ (* 6 (div (+ (- 2) .cse26) 6)) .cse18 .cse27 1) (+ .cse5 .cse26)) (< 1 v_y_513) (< (+ (* 3 v_y_513) .cse27) 3))))) (<= |c_gcd_#res| (div (+ (- 1) |c_gcd_#in~y1|) 2)) (forall ((v_y_506 Int)) (let ((.cse29 (* 3 v_y_506))) (let ((.cse28 (mod (+ 4 .cse29) 6))) (or (< .cse28 4) (< (+ (* 6 (div (+ (- 2) .cse29) 6)) .cse18 .cse28 1) (+ .cse5 .cse29)))))) (forall ((v_y_407 Int) (v_y_410 Int)) (let ((.cse30 (* 3 v_y_407))) (or (< (+ (* 2 (div (+ .cse30 (- 2)) 6)) 3 (* 2 v_y_410)) |c_gcd_#in~y2|) (< (+ .cse3 (mod (+ .cse30 4) 6)) (+ .cse30 2 (* 6 v_y_410))) (< (+ (* 2 v_y_407) (* v_y_410 4)) .cse20)))) (<= .cse12 |c_gcd_#in~y2|) (forall ((v_y_506 Int)) (< (+ .cse12 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0 1))) (<= (+ .cse12 1) |c_gcd_#in~y1|) (forall ((v_y_506 Int)) (let ((.cse32 (* 3 v_y_506))) (let ((.cse31 (mod (+ 4 .cse32) 6))) (or (< .cse31 4) (< (+ (* 6 (div (+ (- 2) .cse32) 6)) .cse18 .cse31) (+ .cse5 .cse32 1)))))) (forall ((v_y_506 Int)) (< (+ .cse12 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0))) (or (< .cse12 |c_gcd_#in~y1|) (< (+ 2 (* 2 (div |c_gcd_#res| 2))) |c_gcd_#in~y1|)))))) is different from false [2023-12-19 23:50:22,498 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse13 (div |c_gcd_#in~y2| 2))) (let ((.cse4 (* 3 |c_gcd_#res|)) (.cse20 (* 6 |c_gcd_#res|)) (.cse11 (* 3 .cse13))) (let ((.cse2 (< |c_gcd_#res| (+ .cse13 1))) (.cse17 (* 6 (div (+ |c_gcd_#in~y1| (- 5)) 2))) (.cse7 (+ .cse11 8)) (.cse8 (+ .cse20 2)) (.cse0 (+ 5 .cse4)) (.cse9 (+ |c_gcd_#in~y1| |c_gcd_#in~y2|)) (.cse22 (+ |c_gcd_#in~y2| 1)) (.cse6 (* 6 .cse13)) (.cse1 (* 2 .cse13)) (.cse27 (* 2 |c_gcd_#res|))) (and (<= .cse0 |c_gcd_#in~y1|) (or (forall ((v_y_407 Int)) (< (+ (* 2 (div (+ (* 3 v_y_407) (- 2)) 6)) |c_gcd_#res| 1) (+ v_y_407 .cse1))) .cse2) (or (forall ((v_y_407 Int)) (let ((.cse3 (* 3 v_y_407))) (let ((.cse5 (mod (+ .cse3 4) 6))) (or (< (+ (* (div (+ .cse3 (- 2)) 6) 6) .cse4 .cse5 4) (+ .cse3 .cse6)) (< (+ .cse4 .cse5) .cse7) (< .cse5 4))))) .cse2) (<= .cse8 .cse9) (or (forall ((v_y_407 Int)) (let ((.cse12 (* 3 v_y_407))) (let ((.cse10 (mod (+ .cse12 4) 6))) (or (< (+ .cse4 .cse10) (+ .cse11 5)) (< .cse10 4) (< (+ 2 (* 2 (div (+ .cse12 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse1)))))) (< |c_gcd_#res| .cse13)) (<= (+ |c_gcd_#res| 1) |c_gcd_#in~y2|) (or (forall ((v_y_407 Int)) (let ((.cse14 (* 3 v_y_407))) (or (< (mod (+ .cse14 4) 6) 4) (< (+ 2 (* 2 (div (+ .cse14 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse1))))) .cse2) (<= (+ 2 |c_gcd_#res|) |c_gcd_#in~y1|) (forall ((v_y_361 Int)) (let ((.cse16 (* 3 v_y_361))) (let ((.cse15 (mod (+ .cse16 4) 6))) (or (< (+ .cse15 (* 6 (div (+ .cse16 (- 2)) 6)) .cse4) (+ .cse16 .cse17 10)) (< (+ .cse15 .cse4) (+ 7 .cse11)) (< .cse15 4))))) (forall ((v_y_361 Int)) (let ((.cse19 (* 3 v_y_361))) (let ((.cse18 (mod (+ .cse19 4) 6))) (or (< .cse18 4) (< (+ .cse18 (* 6 (div (+ .cse19 (- 2)) 6)) .cse4) (+ .cse19 .cse17 8)) (< (+ .cse18 .cse4) .cse7))))) (<= .cse8 |c_gcd_#in~y1|) (forall ((v_y_506 Int) (v_y_504 Int)) (let ((.cse21 (* 3 v_y_506))) (or (< (+ .cse20 (mod (+ 4 .cse21) 6)) (+ 5 (* 6 v_y_504) .cse21)) (< (+ 3 (* 2 v_y_504) (* 2 (div (+ (- 2) .cse21) 6))) |c_gcd_#in~y2|) (< (+ (* v_y_504 4) (* 2 v_y_506)) .cse22)))) (forall ((v_y_506 Int) (v_y_548 Int)) (let ((.cse25 (* 3 v_y_506))) (let ((.cse23 (mod (+ 4 .cse25) 6)) (.cse24 (* 6 v_y_548))) (or (< .cse23 (+ .cse24 2)) (< (+ 5 .cse24) .cse23) (< (+ (* 6 (div (+ (- 2) .cse25) 6)) .cse20 .cse23 1) (+ .cse24 .cse6 .cse25)))))) (forall ((v_y_506 Int)) (let ((.cse26 (* 3 v_y_506))) (or (< (mod (+ 4 .cse26) 6) 4) (< (+ .cse27 (* 2 (div (+ (- 2) .cse26) 6)) 1) (+ v_y_506 .cse1))))) (forall ((v_y_506 Int)) (let ((.cse28 (* 3 v_y_506))) (< (+ (* 6 (div (+ (- 2) .cse28) 6)) .cse20 (mod (+ 4 .cse28) 6) 1) (+ .cse6 .cse28)))) (<= .cse0 .cse9) (forall ((v_y_506 Int) (v_y_513 Int)) (let ((.cse29 (* 3 v_y_506))) (let ((.cse30 (mod (+ 4 .cse29) 6))) (or (< (+ (* 6 (div (+ (- 2) .cse29) 6)) .cse20 .cse30 1) (+ .cse6 .cse29)) (< 1 v_y_513) (< (+ (* 3 v_y_513) .cse30) 3))))) (<= |c_gcd_#res| (div (+ (- 1) |c_gcd_#in~y1|) 2)) (forall ((v_y_506 Int)) (let ((.cse32 (* 3 v_y_506))) (let ((.cse31 (mod (+ 4 .cse32) 6))) (or (< .cse31 4) (< (+ (* 6 (div (+ (- 2) .cse32) 6)) .cse20 .cse31 1) (+ .cse6 .cse32)))))) (forall ((v_y_407 Int) (v_y_410 Int)) (let ((.cse33 (* 3 v_y_407))) (or (< (+ (* 2 (div (+ .cse33 (- 2)) 6)) 3 (* 2 v_y_410)) |c_gcd_#in~y2|) (< (+ .cse4 (mod (+ .cse33 4) 6)) (+ .cse33 2 (* 6 v_y_410))) (< (+ (* 2 v_y_407) (* v_y_410 4)) .cse22)))) (<= .cse27 |c_gcd_#in~y2|) (forall ((v_y_506 Int)) (< (+ .cse27 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse1 1))) (<= (+ .cse27 1) |c_gcd_#in~y1|) (forall ((v_y_506 Int)) (let ((.cse35 (* 3 v_y_506))) (let ((.cse34 (mod (+ 4 .cse35) 6))) (or (< .cse34 4) (< (+ (* 6 (div (+ (- 2) .cse35) 6)) .cse20 .cse34) (+ .cse6 .cse35 1)))))) (forall ((v_y_506 Int)) (< (+ .cse27 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse1))) (or (< .cse27 |c_gcd_#in~y1|) (< (+ 2 (* 2 (div |c_gcd_#res| 2))) |c_gcd_#in~y1|)))))) is different from false [2023-12-19 23:50:27,253 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse10 (div |c_gcd_#in~y2| 2))) (let ((.cse8 (* 3 .cse10))) (let ((.cse1 (< |c_gcd_#res| (+ .cse10 1))) (.cse14 (* 6 (div (+ |c_gcd_#in~y1| (- 5)) 2))) (.cse6 (+ .cse8 8)) (.cse3 (* 3 |c_gcd_#res|)) (.cse19 (+ |c_gcd_#in~y2| 1)) (.cse17 (* 6 |c_gcd_#res|)) (.cse5 (* 6 .cse10)) (.cse0 (* 2 .cse10)) (.cse24 (* 2 |c_gcd_#res|))) (and (or (forall ((v_y_407 Int)) (< (+ (* 2 (div (+ (* 3 v_y_407) (- 2)) 6)) |c_gcd_#res| 1) (+ v_y_407 .cse0))) .cse1) (<= c_gcd_~y2 |c_gcd_#in~y2|) (or (forall ((v_y_407 Int)) (let ((.cse2 (* 3 v_y_407))) (let ((.cse4 (mod (+ .cse2 4) 6))) (or (< (+ (* (div (+ .cse2 (- 2)) 6) 6) .cse3 .cse4 4) (+ .cse2 .cse5)) (< (+ .cse3 .cse4) .cse6) (< .cse4 4))))) .cse1) (or (forall ((v_y_407 Int)) (let ((.cse9 (* 3 v_y_407))) (let ((.cse7 (mod (+ .cse9 4) 6))) (or (< (+ .cse3 .cse7) (+ .cse8 5)) (< .cse7 4) (< (+ 2 (* 2 (div (+ .cse9 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0)))))) (< |c_gcd_#res| .cse10)) (<= (+ |c_gcd_#res| 1) |c_gcd_#in~y2|) (or (forall ((v_y_407 Int)) (let ((.cse11 (* 3 v_y_407))) (or (< (mod (+ .cse11 4) 6) 4) (< (+ 2 (* 2 (div (+ .cse11 (- 2)) 6)) |c_gcd_#res|) (+ v_y_407 .cse0))))) .cse1) (<= (+ 2 |c_gcd_#res|) |c_gcd_#in~y1|) (= c_gcd_~y2 |c_gcd_#in~y2|) (forall ((v_y_361 Int)) (let ((.cse13 (* 3 v_y_361))) (let ((.cse12 (mod (+ .cse13 4) 6))) (or (< (+ .cse12 (* 6 (div (+ .cse13 (- 2)) 6)) .cse3) (+ .cse13 .cse14 10)) (< (+ .cse12 .cse3) (+ 7 .cse8)) (< .cse12 4))))) (forall ((v_y_361 Int)) (let ((.cse16 (* 3 v_y_361))) (let ((.cse15 (mod (+ .cse16 4) 6))) (or (< .cse15 4) (< (+ .cse15 (* 6 (div (+ .cse16 (- 2)) 6)) .cse3) (+ .cse16 .cse14 8)) (< (+ .cse15 .cse3) .cse6))))) (forall ((v_y_506 Int) (v_y_504 Int)) (let ((.cse18 (* 3 v_y_506))) (or (< (+ .cse17 (mod (+ 4 .cse18) 6)) (+ 5 (* 6 v_y_504) .cse18)) (< (+ 3 (* 2 v_y_504) (* 2 (div (+ (- 2) .cse18) 6))) |c_gcd_#in~y2|) (< (+ (* v_y_504 4) (* 2 v_y_506)) .cse19)))) (forall ((v_y_506 Int) (v_y_548 Int)) (let ((.cse22 (* 3 v_y_506))) (let ((.cse20 (mod (+ 4 .cse22) 6)) (.cse21 (* 6 v_y_548))) (or (< .cse20 (+ .cse21 2)) (< (+ 5 .cse21) .cse20) (< (+ (* 6 (div (+ (- 2) .cse22) 6)) .cse17 .cse20 1) (+ .cse21 .cse5 .cse22)))))) (forall ((v_y_506 Int)) (let ((.cse23 (* 3 v_y_506))) (or (< (mod (+ 4 .cse23) 6) 4) (< (+ .cse24 (* 2 (div (+ (- 2) .cse23) 6)) 1) (+ v_y_506 .cse0))))) (forall ((v_y_506 Int)) (let ((.cse25 (* 3 v_y_506))) (< (+ (* 6 (div (+ (- 2) .cse25) 6)) .cse17 (mod (+ 4 .cse25) 6) 1) (+ .cse5 .cse25)))) (forall ((v_y_506 Int) (v_y_513 Int)) (let ((.cse26 (* 3 v_y_506))) (let ((.cse27 (mod (+ 4 .cse26) 6))) (or (< (+ (* 6 (div (+ (- 2) .cse26) 6)) .cse17 .cse27 1) (+ .cse5 .cse26)) (< 1 v_y_513) (< (+ (* 3 v_y_513) .cse27) 3))))) (<= |c_gcd_#res| (div (+ (- 1) |c_gcd_#in~y1|) 2)) (forall ((v_y_506 Int)) (let ((.cse29 (* 3 v_y_506))) (let ((.cse28 (mod (+ 4 .cse29) 6))) (or (< .cse28 4) (< (+ (* 6 (div (+ (- 2) .cse29) 6)) .cse17 .cse28 1) (+ .cse5 .cse29)))))) (<= (+ c_gcd_~y2 1) |c_gcd_#in~y1|) (forall ((v_y_407 Int) (v_y_410 Int)) (let ((.cse30 (* 3 v_y_407))) (or (< (+ (* 2 (div (+ .cse30 (- 2)) 6)) 3 (* 2 v_y_410)) |c_gcd_#in~y2|) (< (+ .cse3 (mod (+ .cse30 4) 6)) (+ .cse30 2 (* 6 v_y_410))) (< (+ (* 2 v_y_407) (* v_y_410 4)) .cse19)))) (= |c_gcd_#in~y1| c_gcd_~y1) (<= .cse24 |c_gcd_#in~y2|) (forall ((v_y_506 Int)) (< (+ .cse24 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0 1))) (<= 1 c_gcd_~y2) (<= (+ .cse24 1) |c_gcd_#in~y1|) (forall ((v_y_506 Int)) (let ((.cse32 (* 3 v_y_506))) (let ((.cse31 (mod (+ 4 .cse32) 6))) (or (< .cse31 4) (< (+ (* 6 (div (+ (- 2) .cse32) 6)) .cse17 .cse31) (+ .cse5 .cse32 1)))))) (forall ((v_y_506 Int)) (< (+ .cse24 (* 2 (div (+ (- 2) (* 3 v_y_506)) 6))) (+ v_y_506 .cse0))) (<= 1 c_gcd_~y1) (or (< .cse24 |c_gcd_#in~y1|) (< (+ 2 (* 2 (div |c_gcd_#res| 2))) |c_gcd_#in~y1|)))))) is different from false [2023-12-19 23:50:28,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:50:28,051 INFO L93 Difference]: Finished difference Result 200 states and 269 transitions. [2023-12-19 23:50:28,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-19 23:50:28,052 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 50 states have (on average 2.12) internal successors, (106), 44 states have internal predecessors, (106), 21 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (27), 17 states have call predecessors, (27), 21 states have call successors, (27) Word has length 73 [2023-12-19 23:50:28,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:50:28,053 INFO L225 Difference]: With dead ends: 200 [2023-12-19 23:50:28,053 INFO L226 Difference]: Without dead ends: 196 [2023-12-19 23:50:28,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 121 SyntacticMatches, 6 SemanticMatches, 84 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 32.3s TimeCoverageRelationStatistics Valid=594, Invalid=5744, Unknown=6, NotChecked=966, Total=7310 [2023-12-19 23:50:28,054 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 48 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 862 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 23:50:28,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1047 Invalid, 2162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1267 Invalid, 0 Unknown, 862 Unchecked, 2.6s Time] [2023-12-19 23:50:28,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-12-19 23:50:28,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 95. [2023-12-19 23:50:28,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 65 states have (on average 1.0923076923076922) internal successors, (71), 65 states have internal predecessors, (71), 10 states have call successors, (10), 4 states have call predecessors, (10), 19 states have return successors, (39), 25 states have call predecessors, (39), 10 states have call successors, (39) [2023-12-19 23:50:28,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 120 transitions. [2023-12-19 23:50:28,061 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 120 transitions. Word has length 73 [2023-12-19 23:50:28,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:50:28,061 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 120 transitions. [2023-12-19 23:50:28,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 50 states have (on average 2.12) internal successors, (106), 44 states have internal predecessors, (106), 21 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (27), 17 states have call predecessors, (27), 21 states have call successors, (27) [2023-12-19 23:50:28,062 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 120 transitions. [2023-12-19 23:50:28,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 23:50:28,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:50:28,062 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:50:28,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-12-19 23:50:28,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:50:28,269 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:50:28,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:50:28,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1031896220, now seen corresponding path program 25 times [2023-12-19 23:50:28,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:50:28,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691881404] [2023-12-19 23:50:28,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:50:28,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:50:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:50:28,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:50:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:50:28,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:50:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:50:28,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:50:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:50:28,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:50:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:50:28,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:50:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:50:29,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 23:50:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:50:29,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:50:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:50:29,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:50:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:50:29,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:50:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:50:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 15 proven. 35 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-19 23:50:29,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:50:29,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691881404] [2023-12-19 23:50:29,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691881404] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:50:29,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447980757] [2023-12-19 23:50:29,461 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 23:50:29,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:50:29,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:50:29,463 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:50:29,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-19 23:50:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:50:30,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-19 23:50:30,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:50:31,788 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 20 proven. 35 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-19 23:50:31,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:53:05,797 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse19 (div (+ |c_gcd_#in~y1| |c_gcd_#in~y2| (- 8)) 3)) (.cse13 (div (+ |c_gcd_#in~y1| |c_gcd_#in~y2| (- 5)) 3)) (.cse7 (* 3 c_gcd_~y1)) (.cse11 (div c_gcd_~y2 2))) (let ((.cse2 (* .cse11 3)) (.cse6 (+ .cse7 1)) (.cse5 (* 3 .cse13)) (.cse3 (* c_gcd_~y2 3)) (.cse10 (+ (* 3 .cse19) 1)) (.cse20 (* 2 .cse19)) (.cse1 (+ |c_gcd_#in~y1| |c_gcd_#in~y2|))) (and (forall ((v_y_623 Int)) (let ((.cse0 (* 5 v_y_623))) (let ((.cse4 (* (div (+ (- 2) .cse0) 3) 3))) (or (< (+ .cse0 4) .cse1) (< (+ .cse2 1) .cse0) (< (+ .cse3 .cse4) (+ .cse5 5 .cse0)) (< .cse6 (+ .cse0 .cse3)) (< (+ .cse4 .cse7) (+ .cse5 .cse0 .cse3 2)) (< .cse3 (+ .cse0 2)))))) (forall ((v_y_614 Int) (v_z_614 Int)) (let ((.cse8 (* 3 v_y_614)) (.cse9 (* 2 v_z_614))) (or (< c_gcd_~y2 (+ 2 .cse8 .cse9)) (< v_z_614 0) (< (+ (* v_y_614 15) v_z_614 (* 3 (div (+ (- 2) (* v_z_614 10)) 3))) .cse10) (< 2 v_z_614) (< c_gcd_~y2 (+ 2 (* 6 v_y_614) (* v_z_614 4))) (< c_gcd_~y1 (+ c_gcd_~y2 .cse8 .cse9 1)) (< (+ (* 6 v_z_614) 4 (* 9 v_y_614)) .cse1) (= 2 v_z_614)))) (let ((.cse12 (* 5 c_gcd_~y2))) (or (< (* .cse11 5) (+ |c_gcd_#in~y1| |c_gcd_#in~y2| 1)) (< (* 5 c_gcd_~y1) (+ |c_gcd_#in~y1| |c_gcd_#in~y2| .cse12 1)) (< .cse12 (+ |c_gcd_#in~y1| 6 |c_gcd_#in~y2|)))) (forall ((v_y_610 Int)) (or (< (div (+ (- 2) (* 5 v_y_610)) 3) .cse13) (< c_gcd_~y2 (+ (* 2 v_y_610) 2)) (< c_gcd_~y1 (+ c_gcd_~y2 v_y_610 1)) (< c_gcd_~y2 (+ 2 v_y_610)) (< (+ (* 3 v_y_610) 4) .cse1))) (forall ((v_y_615 Int)) (let ((.cse15 (* 5 v_y_615))) (let ((.cse16 (div (+ (- 2) .cse15) 3))) (let ((.cse14 (* 3 .cse16))) (or (< (+ .cse14 .cse7) (+ .cse15 .cse5 .cse3 2)) (< (+ .cse14 .cse2) (+ .cse15 .cse5 2)) (< .cse6 (+ .cse15 .cse3)) (< (+ .cse14 .cse3) (+ .cse15 .cse5 5)) (< .cse16 .cse13) (< .cse3 (+ .cse15 2))))))) (forall ((v_z_620 Int) (v_y_620 Int)) (let ((.cse21 (* 5 v_y_620)) (.cse18 (* 3 v_z_620)) (.cse17 (div (+ (- 2) (* v_z_620 10)) 3))) (or (< (+ c_gcd_~y2 .cse17) (+ .cse18 3 .cse19)) (< (+ c_gcd_~y2 (* 2 .cse17)) (+ (* 6 v_z_620) .cse20 4)) (< c_gcd_~y1 (+ .cse18 c_gcd_~y2 .cse21 1)) (< c_gcd_~y2 (+ .cse18 2 .cse21)) (< (+ c_gcd_~y1 .cse17) (+ .cse18 2 c_gcd_~y2 .cse19)) (= 2 v_z_620) (< 2 v_z_620) (< v_z_620 0) (< (+ v_z_620 (* 3 .cse17) (* v_y_620 15)) .cse10)))) (forall ((v_y_625 Int) (v_z_625 Int)) (let ((.cse25 (* v_z_625 10))) (let ((.cse24 (* 5 v_y_625)) (.cse22 (div (+ (- 2) .cse25) 3)) (.cse23 (* 3 v_z_625))) (or (< (+ .cse22 c_gcd_~y2) (+ .cse23 3 .cse19)) (< v_z_625 0) (< 2 v_z_625) (< (+ c_gcd_~y2 (* .cse22 2)) (+ .cse20 (* 6 v_z_625) 4)) (= 2 v_z_625) (< c_gcd_~y2 (+ .cse23 2 .cse24)) (< c_gcd_~y1 (+ .cse23 c_gcd_~y2 .cse24 1)) (< (+ .cse25 (* v_y_625 15) 4) .cse1) (< (+ .cse22 c_gcd_~y1) (+ .cse23 2 c_gcd_~y2 .cse19))))))))) is different from false [2023-12-19 23:53:05,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447980757] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:53:05,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 23:53:05,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 36 [2023-12-19 23:53:05,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204676494] [2023-12-19 23:53:05,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 23:53:05,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-19 23:53:05,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:53:05,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-19 23:53:05,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2072, Unknown=24, NotChecked=92, Total=2352 [2023-12-19 23:53:05,816 INFO L87 Difference]: Start difference. First operand 95 states and 120 transitions. Second operand has 36 states, 32 states have (on average 2.0) internal successors, (64), 26 states have internal predecessors, (64), 11 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2023-12-19 23:53:10,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:53:10,112 INFO L93 Difference]: Finished difference Result 164 states and 217 transitions. [2023-12-19 23:53:10,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-19 23:53:10,113 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 2.0) internal successors, (64), 26 states have internal predecessors, (64), 11 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) Word has length 73 [2023-12-19 23:53:10,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:53:10,113 INFO L225 Difference]: With dead ends: 164 [2023-12-19 23:53:10,114 INFO L226 Difference]: Without dead ends: 160 [2023-12-19 23:53:10,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 103 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 148.4s TimeCoverageRelationStatistics Valid=447, Invalid=3955, Unknown=24, NotChecked=130, Total=4556 [2023-12-19 23:53:10,116 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 49 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 23:53:10,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 717 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 23:53:10,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-19 23:53:10,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 114. [2023-12-19 23:53:10,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 79 states have (on average 1.0759493670886076) internal successors, (85), 75 states have internal predecessors, (85), 10 states have call successors, (10), 4 states have call predecessors, (10), 24 states have return successors, (53), 34 states have call predecessors, (53), 10 states have call successors, (53) [2023-12-19 23:53:10,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 148 transitions. [2023-12-19 23:53:10,142 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 148 transitions. Word has length 73 [2023-12-19 23:53:10,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:53:10,142 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 148 transitions. [2023-12-19 23:53:10,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 2.0) internal successors, (64), 26 states have internal predecessors, (64), 11 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2023-12-19 23:53:10,143 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 148 transitions. [2023-12-19 23:53:10,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 23:53:10,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:53:10,143 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:53:10,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-12-19 23:53:10,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-12-19 23:53:10,351 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:53:10,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:53:10,351 INFO L85 PathProgramCache]: Analyzing trace with hash 44195036, now seen corresponding path program 26 times [2023-12-19 23:53:10,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:53:10,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534114280] [2023-12-19 23:53:10,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:53:10,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:53:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:53:10,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:53:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:53:10,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:53:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:53:10,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:53:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:53:10,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:53:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:53:11,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:53:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:53:11,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 23:53:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:53:11,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:53:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:53:11,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:53:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:53:11,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:53:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:53:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 17 proven. 36 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 23:53:11,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:53:11,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534114280] [2023-12-19 23:53:11,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534114280] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:53:11,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249071640] [2023-12-19 23:53:11,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 23:53:11,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:53:11,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:53:11,565 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:53:11,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-19 23:53:12,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 23:53:12,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:53:12,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-19 23:53:12,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:53:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 20 proven. 33 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 23:53:13,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:54:57,855 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse11 (* |c_gcd_#t~ret5| 3)) (.cse8 (div (+ |c_gcd_#in~y1| |c_gcd_#in~y2| (- 5)) 3)) (.cse1 (div (+ |c_gcd_#in~y1| |c_gcd_#in~y2| (- 8)) 3))) (let ((.cse7 (< |c_gcd_#t~ret5| (+ 3 .cse1))) (.cse12 (* 3 .cse8)) (.cse3 (+ |c_gcd_#in~y1| |c_gcd_#in~y2|)) (.cse4 (+ .cse11 1))) (and (forall ((v_y_639 Int) (v_z_639 Int)) (let ((.cse2 (* v_y_639 15)) (.cse0 (* v_z_639 10))) (or (< (+ |c_gcd_#t~ret5| (div (+ (- 2) .cse0) 3)) (+ (* 3 v_z_639) 2 .cse1)) (< (+ .cse2 4 .cse0) .cse3) (= 2 v_z_639) (< .cse4 (+ .cse2 .cse0)) (< v_z_639 0) (< 2 v_z_639)))) (or (forall ((v_y_639 Int) (v_z_639 Int)) (let ((.cse5 (* v_y_639 15)) (.cse6 (* v_z_639 10))) (or (< (+ .cse5 4 .cse6) .cse3) (< .cse4 (+ .cse5 .cse6)) (< v_z_639 0) (< 2 v_z_639)))) .cse7) (forall ((v_y_651 Int)) (or (< |c_gcd_#t~ret5| (+ v_y_651 1)) (< (+ (* 3 v_y_651) 4) .cse3) (< (div (+ (- 2) (* 5 v_y_651)) 3) .cse8))) (or (< (+ 9 (* (div (+ (- 2) |c_gcd_#t~ret5|) 5) 15)) .cse3) .cse7) (forall ((v_y_636 Int)) (let ((.cse10 (* 5 v_y_636))) (let ((.cse9 (div (+ (- 2) .cse10) 3))) (or (< .cse9 .cse8) (< (+ .cse10 4) .cse3) (< (+ (* 3 .cse9) .cse11) (+ .cse12 2 .cse10)) (< .cse4 .cse10))))) (forall ((v_y_646 Int)) (let ((.cse14 (* 5 v_y_646))) (let ((.cse13 (div (+ (- 2) .cse14) 3))) (or (< .cse13 .cse8) (< (+ (* 3 .cse13) .cse11) (+ .cse12 2 .cse14)) (< .cse4 .cse14))))) (forall ((v_z_654 Int) (v_y_654 Int)) (or (< (+ (* 6 v_z_654) (* 9 v_y_654) 4) .cse3) (< |c_gcd_#t~ret5| (+ (* 2 v_z_654) (* 3 v_y_654) 1)) (< v_z_654 0) (= 2 v_z_654) (< 2 v_z_654) (< (+ (* 5 v_y_654) (div (+ (- 2) (* v_z_654 10)) 3)) .cse1))) (<= (* |c_gcd_#t~ret5| 5) .cse3) (forall ((v_z_650 Int) (v_y_650 Int)) (let ((.cse16 (* v_z_650 10))) (let ((.cse15 (div (+ (- 2) .cse16) 3))) (or (= 2 v_z_650) (< (+ (* 5 v_y_650) .cse15) .cse1) (< v_z_650 0) (< (+ |c_gcd_#t~ret5| .cse15) (+ 2 (* 3 v_z_650) .cse1)) (< .cse4 (+ (* v_y_650 15) .cse16)) (< 2 v_z_650))))) (<= (* (div |c_gcd_#t~ret5| 5) 15) (+ 5 |c_gcd_#in~y1| |c_gcd_#in~y2|))))) is different from false [2023-12-19 23:55:03,867 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse9 (div c_gcd_~y1 2))) (let ((.cse16 (* .cse9 3)) (.cse1 (div (+ |c_gcd_#in~y1| |c_gcd_#in~y2| (- 5)) 3)) (.cse18 (* c_gcd_~y2 3)) (.cse10 (div (+ |c_gcd_#in~y1| |c_gcd_#in~y2| (- 8)) 3))) (let ((.cse2 (< c_gcd_~y2 (+ 3 c_gcd_~y1 .cse10))) (.cse8 (< c_gcd_~y1 (+ 4 .cse10))) (.cse7 (+ .cse18 1)) (.cse0 (+ |c_gcd_#in~y1| |c_gcd_#in~y2|)) (.cse17 (* 3 .cse1)) (.cse5 (+ .cse16 1)) (.cse6 (* 3 c_gcd_~y1))) (and (forall ((v_y_651 Int)) (or (< c_gcd_~y2 (+ v_y_651 c_gcd_~y1 1)) (< (+ (* 3 v_y_651) 4) .cse0) (< c_gcd_~y1 (+ 2 v_y_651)) (< c_gcd_~y1 (+ 2 (* 2 v_y_651))) (< (div (+ (- 2) (* 5 v_y_651)) 3) .cse1))) (or .cse2 (forall ((v_y_639 Int) (v_z_639 Int)) (let ((.cse3 (* v_y_639 15)) (.cse4 (* v_z_639 10))) (or (< (+ .cse3 4 .cse4) .cse0) (< .cse5 (+ .cse3 .cse4)) (< .cse6 (+ .cse3 2 .cse4)) (< v_z_639 0) (< 2 v_z_639) (< .cse7 (+ .cse3 .cse6 .cse4))))) .cse8 (< .cse9 (+ 3 .cse10))) (forall ((v_z_654 Int) (v_y_654 Int)) (let ((.cse11 (* 2 v_z_654)) (.cse12 (* 3 v_y_654))) (or (< (+ (* 6 v_z_654) (* 9 v_y_654) 4) .cse0) (< c_gcd_~y1 (+ 2 (* v_z_654 4) (* 6 v_y_654))) (< c_gcd_~y2 (+ .cse11 c_gcd_~y1 .cse12 1)) (< c_gcd_~y1 (+ .cse11 2 .cse12)) (< v_z_654 0) (= 2 v_z_654) (< 2 v_z_654) (< (+ (* 5 v_y_654) (div (+ (- 2) (* v_z_654 10)) 3)) .cse10)))) (forall ((v_y_646 Int)) (let ((.cse14 (* 5 v_y_646))) (let ((.cse13 (div (+ (- 2) .cse14) 3))) (let ((.cse15 (* 3 .cse13))) (or (< .cse13 .cse1) (< .cse7 (+ .cse14 .cse6)) (< .cse6 (+ 2 .cse14)) (< (+ .cse15 .cse16) (+ .cse17 2 .cse14)) (< (+ .cse15 .cse18) (+ .cse17 2 .cse14 .cse6)) (< (+ .cse15 .cse6) (+ .cse17 5 .cse14))))))) (forall ((v_z_650 Int) (v_y_650 Int)) (let ((.cse22 (* v_z_650 10))) (let ((.cse20 (* 3 v_z_650)) (.cse19 (div (+ (- 2) .cse22) 3)) (.cse21 (* v_y_650 15))) (or (< (+ .cse19 c_gcd_~y1) (+ 3 .cse20 .cse10)) (< (+ c_gcd_~y2 .cse19) (+ 2 c_gcd_~y1 .cse20 .cse10)) (< (+ .cse9 .cse19) (+ 2 .cse20 .cse10)) (= 2 v_z_650) (< (+ (* 5 v_y_650) .cse19) .cse10) (< v_z_650 0) (< .cse6 (+ .cse21 2 .cse22)) (< 2 v_z_650) (< .cse7 (+ .cse21 .cse6 .cse22)))))) (let ((.cse24 (div (+ 5 |c_gcd_#in~y1| |c_gcd_#in~y2|) 15))) (let ((.cse23 (* 5 .cse24))) (or (< c_gcd_~y1 (+ .cse23 6)) (< c_gcd_~y2 (+ .cse23 5 c_gcd_~y1)) (< c_gcd_~y1 (+ 10 (* .cse24 10)))))) (forall ((v_y_639 Int) (v_z_639 Int)) (let ((.cse28 (* v_z_639 10))) (let ((.cse25 (div (+ (- 2) .cse28) 3)) (.cse26 (* 3 v_z_639)) (.cse27 (* v_y_639 15))) (or (< (+ c_gcd_~y2 .cse25) (+ .cse26 2 c_gcd_~y1 .cse10)) (< (+ .cse27 4 .cse28) .cse0) (< (+ .cse9 .cse25) (+ .cse26 2 .cse10)) (= 2 v_z_639) (< (+ .cse25 c_gcd_~y1) (+ .cse26 3 .cse10)) (< .cse6 (+ .cse27 2 .cse28)) (< v_z_639 0) (< 2 v_z_639) (< .cse7 (+ .cse27 .cse6 .cse28)))))) (let ((.cse29 (* 5 (div (+ |c_gcd_#in~y1| |c_gcd_#in~y2| (- 10)) 15)))) (or (< c_gcd_~y2 (+ 7 c_gcd_~y1 .cse29)) .cse2 (< c_gcd_~y1 (+ (* 2 .cse10) 6)) .cse8 (< c_gcd_~y1 (+ .cse29 8)))) (forall ((v_y_636 Int)) (let ((.cse32 (* 5 v_y_636))) (let ((.cse30 (div (+ (- 2) .cse32) 3))) (let ((.cse31 (* 3 .cse30))) (or (< .cse30 .cse1) (< (+ .cse31 .cse6) (+ .cse17 5 .cse32)) (< .cse7 (+ .cse32 .cse6)) (< (+ .cse32 4) .cse0) (< (+ .cse31 .cse18) (+ .cse17 2 .cse32 .cse6)) (< .cse5 .cse32) (< .cse6 (+ 2 .cse32))))))) (let ((.cse33 (* 5 c_gcd_~y1))) (or (< .cse33 (+ |c_gcd_#in~y1| 6 |c_gcd_#in~y2|)) (< (* 5 c_gcd_~y2) (+ |c_gcd_#in~y1| |c_gcd_#in~y2| .cse33 1)) (< (* 5 .cse9) (+ |c_gcd_#in~y1| |c_gcd_#in~y2| 1)))))))) is different from false [2023-12-19 23:55:03,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249071640] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:55:03,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 23:55:03,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 35 [2023-12-19 23:55:03,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928400194] [2023-12-19 23:55:03,880 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 23:55:03,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-19 23:55:03,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:55:03,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-19 23:55:03,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1566, Unknown=22, NotChecked=162, Total=1892 [2023-12-19 23:55:03,881 INFO L87 Difference]: Start difference. First operand 114 states and 148 transitions. Second operand has 35 states, 31 states have (on average 2.064516129032258) internal successors, (64), 25 states have internal predecessors, (64), 12 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (18), 14 states have call predecessors, (18), 12 states have call successors, (18) [2023-12-19 23:55:06,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:55:06,792 INFO L93 Difference]: Finished difference Result 173 states and 230 transitions. [2023-12-19 23:55:06,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 23:55:06,793 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 2.064516129032258) internal successors, (64), 25 states have internal predecessors, (64), 12 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (18), 14 states have call predecessors, (18), 12 states have call successors, (18) Word has length 73 [2023-12-19 23:55:06,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:55:06,794 INFO L225 Difference]: With dead ends: 173 [2023-12-19 23:55:06,794 INFO L226 Difference]: Without dead ends: 169 [2023-12-19 23:55:06,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 103 SyntacticMatches, 8 SemanticMatches, 57 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 102.0s TimeCoverageRelationStatistics Valid=339, Invalid=2839, Unknown=22, NotChecked=222, Total=3422 [2023-12-19 23:55:06,795 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 46 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 23:55:06,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 556 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 23:55:06,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-19 23:55:06,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 109. [2023-12-19 23:55:06,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 75 states have (on average 1.08) internal successors, (81), 73 states have internal predecessors, (81), 10 states have call successors, (10), 4 states have call predecessors, (10), 23 states have return successors, (50), 31 states have call predecessors, (50), 10 states have call successors, (50) [2023-12-19 23:55:06,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 141 transitions. [2023-12-19 23:55:06,801 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 141 transitions. Word has length 73 [2023-12-19 23:55:06,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:55:06,801 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 141 transitions. [2023-12-19 23:55:06,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 2.064516129032258) internal successors, (64), 25 states have internal predecessors, (64), 12 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (18), 14 states have call predecessors, (18), 12 states have call successors, (18) [2023-12-19 23:55:06,801 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 141 transitions. [2023-12-19 23:55:06,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 23:55:06,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:55:06,802 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:55:06,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-12-19 23:55:07,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-12-19 23:55:07,014 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:55:07,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:55:07,015 INFO L85 PathProgramCache]: Analyzing trace with hash -766372356, now seen corresponding path program 27 times [2023-12-19 23:55:07,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:55:07,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696606147] [2023-12-19 23:55:07,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:07,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:55:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:07,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:55:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:07,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:55:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:07,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:55:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:07,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:55:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:07,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:55:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:07,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 23:55:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:07,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:08,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:08,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:08,172 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 17 proven. 38 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 23:55:08,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:55:08,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696606147] [2023-12-19 23:55:08,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696606147] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:55:08,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799648014] [2023-12-19 23:55:08,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 23:55:08,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:08,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:55:08,174 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:55:08,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-19 23:55:08,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-19 23:55:08,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:55:08,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-19 23:55:08,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:55:10,575 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 11 proven. 38 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-19 23:55:10,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:55:22,806 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 23:55:22,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799648014] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:55:22,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:55:22,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 27] total 55 [2023-12-19 23:55:22,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173656676] [2023-12-19 23:55:22,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:55:22,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-19 23:55:22,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:55:22,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-19 23:55:22,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2793, Unknown=0, NotChecked=0, Total=2970 [2023-12-19 23:55:22,808 INFO L87 Difference]: Start difference. First operand 109 states and 141 transitions. Second operand has 55 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 41 states have internal predecessors, (107), 19 states have call successors, (19), 1 states have call predecessors, (19), 19 states have return successors, (26), 18 states have call predecessors, (26), 19 states have call successors, (26) [2023-12-19 23:55:28,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:55:28,108 INFO L93 Difference]: Finished difference Result 162 states and 215 transitions. [2023-12-19 23:55:28,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-19 23:55:28,109 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 41 states have internal predecessors, (107), 19 states have call successors, (19), 1 states have call predecessors, (19), 19 states have return successors, (26), 18 states have call predecessors, (26), 19 states have call successors, (26) Word has length 73 [2023-12-19 23:55:28,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:55:28,109 INFO L225 Difference]: With dead ends: 162 [2023-12-19 23:55:28,109 INFO L226 Difference]: Without dead ends: 158 [2023-12-19 23:55:28,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 121 SyntacticMatches, 6 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=427, Invalid=4685, Unknown=0, NotChecked=0, Total=5112 [2023-12-19 23:55:28,110 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 41 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 23:55:28,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 866 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 23:55:28,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-19 23:55:28,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 99. [2023-12-19 23:55:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 68 states have (on average 1.088235294117647) internal successors, (74), 67 states have internal predecessors, (74), 10 states have call successors, (10), 4 states have call predecessors, (10), 20 states have return successors, (43), 27 states have call predecessors, (43), 10 states have call successors, (43) [2023-12-19 23:55:28,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 127 transitions. [2023-12-19 23:55:28,117 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 127 transitions. Word has length 73 [2023-12-19 23:55:28,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:55:28,117 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 127 transitions. [2023-12-19 23:55:28,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 41 states have internal predecessors, (107), 19 states have call successors, (19), 1 states have call predecessors, (19), 19 states have return successors, (26), 18 states have call predecessors, (26), 19 states have call successors, (26) [2023-12-19 23:55:28,117 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 127 transitions. [2023-12-19 23:55:28,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 23:55:28,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:55:28,118 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:55:28,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-12-19 23:55:28,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-12-19 23:55:28,326 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:55:28,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:55:28,326 INFO L85 PathProgramCache]: Analyzing trace with hash 206545468, now seen corresponding path program 28 times [2023-12-19 23:55:28,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:55:28,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015440388] [2023-12-19 23:55:28,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:28,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:55:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:28,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:55:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:28,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:55:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:28,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:55:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:28,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:55:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:28,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:55:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:28,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 23:55:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:29,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:29,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:29,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:29,380 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-19 23:55:29,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:55:29,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015440388] [2023-12-19 23:55:29,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015440388] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:55:29,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578251285] [2023-12-19 23:55:29,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 23:55:29,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:29,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:55:29,382 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:55:29,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-19 23:55:29,997 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 23:55:29,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:55:29,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-19 23:55:30,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:55:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 36 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-19 23:55:31,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:55:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 23:55:40,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578251285] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:55:40,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:55:40,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 24] total 37 [2023-12-19 23:55:40,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446012970] [2023-12-19 23:55:40,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:55:40,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-19 23:55:40,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:55:40,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-19 23:55:40,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1224, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 23:55:40,002 INFO L87 Difference]: Start difference. First operand 99 states and 127 transitions. Second operand has 37 states, 36 states have (on average 2.388888888888889) internal successors, (86), 29 states have internal predecessors, (86), 14 states have call successors, (17), 1 states have call predecessors, (17), 12 states have return successors, (23), 12 states have call predecessors, (23), 14 states have call successors, (23) [2023-12-19 23:55:42,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:55:42,363 INFO L93 Difference]: Finished difference Result 136 states and 175 transitions. [2023-12-19 23:55:42,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 23:55:42,363 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.388888888888889) internal successors, (86), 29 states have internal predecessors, (86), 14 states have call successors, (17), 1 states have call predecessors, (17), 12 states have return successors, (23), 12 states have call predecessors, (23), 14 states have call successors, (23) Word has length 73 [2023-12-19 23:55:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:55:42,364 INFO L225 Difference]: With dead ends: 136 [2023-12-19 23:55:42,364 INFO L226 Difference]: Without dead ends: 132 [2023-12-19 23:55:42,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 133 SyntacticMatches, 11 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=239, Invalid=2113, Unknown=0, NotChecked=0, Total=2352 [2023-12-19 23:55:42,365 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 51 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 23:55:42,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 487 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 23:55:42,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-19 23:55:42,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 109. [2023-12-19 23:55:42,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 75 states have (on average 1.08) internal successors, (81), 73 states have internal predecessors, (81), 10 states have call successors, (10), 4 states have call predecessors, (10), 23 states have return successors, (51), 31 states have call predecessors, (51), 10 states have call successors, (51) [2023-12-19 23:55:42,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 142 transitions. [2023-12-19 23:55:42,370 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 142 transitions. Word has length 73 [2023-12-19 23:55:42,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:55:42,371 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 142 transitions. [2023-12-19 23:55:42,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.388888888888889) internal successors, (86), 29 states have internal predecessors, (86), 14 states have call successors, (17), 1 states have call predecessors, (17), 12 states have return successors, (23), 12 states have call predecessors, (23), 14 states have call successors, (23) [2023-12-19 23:55:42,371 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 142 transitions. [2023-12-19 23:55:42,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 23:55:42,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:55:42,371 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:55:42,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-12-19 23:55:42,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-12-19 23:55:42,579 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:55:42,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:55:42,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1445123064, now seen corresponding path program 29 times [2023-12-19 23:55:42,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:55:42,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196564336] [2023-12-19 23:55:42,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:55:42,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:55:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:42,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:55:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:42,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:55:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:42,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:55:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:55:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:55:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 23:55:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 23:55:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:43,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 23:55:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:55:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 23 proven. 50 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-19 23:55:44,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:55:44,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196564336] [2023-12-19 23:55:44,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196564336] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:55:44,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665855726] [2023-12-19 23:55:44,006 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 23:55:44,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:44,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:55:44,008 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:55:44,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-19 23:55:44,687 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-19 23:55:44,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:55:44,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-19 23:55:44,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-19 23:55:45,262 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-19 23:55:45,264 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 23:55:45,269 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 23:55:45,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-12-19 23:55:45,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:55:45,462 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 82 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 26 known predicates. [2023-12-19 23:55:45,464 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location gcdErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-19 23:55:45,467 INFO L445 BasicCegarLoop]: Path program histogram: [29, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:55:45,469 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 23:55:45,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 11:55:45 BoogieIcfgContainer [2023-12-19 23:55:45,471 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 23:55:45,471 INFO L158 Benchmark]: Toolchain (without parser) took 868131.99ms. Allocated memory was 367.0MB in the beginning and 612.4MB in the end (delta: 245.4MB). Free memory was 324.6MB in the beginning and 297.8MB in the end (delta: 26.7MB). Peak memory consumption was 273.1MB. Max. memory is 8.0GB. [2023-12-19 23:55:45,472 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 183.5MB. Free memory is still 131.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 23:55:45,472 INFO L158 Benchmark]: CACSL2BoogieTranslator took 153.08ms. Allocated memory is still 367.0MB. Free memory was 324.6MB in the beginning and 313.4MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-19 23:55:45,472 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.75ms. Allocated memory is still 367.0MB. Free memory was 313.4MB in the beginning and 312.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 23:55:45,472 INFO L158 Benchmark]: Boogie Preprocessor took 26.12ms. Allocated memory is still 367.0MB. Free memory was 312.0MB in the beginning and 310.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 23:55:45,472 INFO L158 Benchmark]: RCFGBuilder took 238.58ms. Allocated memory is still 367.0MB. Free memory was 310.4MB in the beginning and 296.2MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-19 23:55:45,473 INFO L158 Benchmark]: TraceAbstraction took 867690.45ms. Allocated memory was 367.0MB in the beginning and 612.4MB in the end (delta: 245.4MB). Free memory was 295.7MB in the beginning and 297.8MB in the end (delta: -2.1MB). Peak memory consumption was 243.8MB. Max. memory is 8.0GB. [2023-12-19 23:55:45,475 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 183.5MB. Free memory is still 131.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 153.08ms. Allocated memory is still 367.0MB. Free memory was 324.6MB in the beginning and 313.4MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.75ms. Allocated memory is still 367.0MB. Free memory was 313.4MB in the beginning and 312.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.12ms. Allocated memory is still 367.0MB. Free memory was 312.0MB in the beginning and 310.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 238.58ms. Allocated memory is still 367.0MB. Free memory was 310.4MB in the beginning and 296.2MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 867690.45ms. Allocated memory was 367.0MB in the beginning and 612.4MB in the end (delta: 245.4MB). Free memory was 295.7MB in the beginning and 297.8MB in the end (delta: -2.1MB). Peak memory consumption was 243.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 54). Cancelled while NwaCegarLoop was analyzing trace of length 82 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 26 known predicates. - TimeoutResultAtElement [Line: 20]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 20). Cancelled while NwaCegarLoop was analyzing trace of length 82 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 26 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 867.7s, OverallIterations: 49, TraceHistogramMax: 6, PathProgramHistogramMax: 29, EmptinessCheckTime: 0.1s, AutomataDifference: 87.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2325 SdHoareTripleChecker+Valid, 40.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1995 mSDsluCounter, 21217 SdHoareTripleChecker+Invalid, 37.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 862 IncrementalHoareTripleChecker+Unchecked, 19881 mSDsCounter, 1006 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31806 IncrementalHoareTripleChecker+Invalid, 33674 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1006 mSolverCounterUnsat, 1336 mSDtfsCounter, 31806 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6240 GetRequests, 3939 SyntacticMatches, 263 SemanticMatches, 2038 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 21671 ImplicationChecksByTransitivity, 637.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=45, InterpolantAutomatonStates: 843, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 48 MinimizatonAttempts, 1480 StatesRemovedByMinimization, 45 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 756.9s InterpolantComputationTime, 4785 NumberOfCodeBlocks, 4785 NumberOfCodeBlocksAsserted, 154 NumberOfCheckSat, 6671 ConstructedInterpolants, 1 QuantifiedInterpolants, 44480 SizeOfPredicates, 604 NumberOfNonLiveVariables, 7785 ConjunctsInSsa, 1499 ConjunctsInUnsatCore, 125 InterpolantComputations, 7 PerfectInterpolantSequences, 3188/6608 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown