/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_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 17:43:07,607 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 17:43:07,657 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 17:43:07,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 17:43:07,660 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 17:43:07,674 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 17:43:07,674 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 17:43:07,674 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 17:43:07,675 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 17:43:07,675 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 17:43:07,675 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 17:43:07,675 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 17:43:07,688 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 17:43:07,688 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 17:43:07,689 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 17:43:07,689 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 17:43:07,689 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 17:43:07,689 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 17:43:07,690 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 17:43:07,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 17:43:07,690 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 17:43:07,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 17:43:07,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 17:43:07,691 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 17:43:07,691 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 17:43:07,691 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 17:43:07,692 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 17:43:07,692 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 17:43:07,692 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 17:43:07,692 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 17:43:07,693 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 17:43:07,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 17:43:07,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 17:43:07,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 17:43:07,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:43:07,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 17:43:07,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 17:43:07,694 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 17:43:07,694 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 17:43:07,694 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 17:43:07,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 17:43:07,695 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 17:43:07,695 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 17:43:07,695 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 17:43:07,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 17:43:07,695 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 17:43:07,696 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 17:43:07,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 17:43:07,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 17:43:07,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 17:43:07,884 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 17:43:07,884 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 17:43:07,885 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2023-12-16 17:43:08,947 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 17:43:09,095 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 17:43:09,096 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2023-12-16 17:43:09,102 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b58f0287/2d099fc11f2e41c0bdfa909afdb302f8/FLAG5972caa25 [2023-12-16 17:43:09,517 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b58f0287/2d099fc11f2e41c0bdfa909afdb302f8 [2023-12-16 17:43:09,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 17:43:09,520 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 17:43:09,520 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 17:43:09,520 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 17:43:09,528 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 17:43:09,529 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:43:09" (1/1) ... [2023-12-16 17:43:09,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a348b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:09, skipping insertion in model container [2023-12-16 17:43:09,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:43:09" (1/1) ... [2023-12-16 17:43:09,545 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 17:43:09,641 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/EvenOdd01-1.c[975,988] [2023-12-16 17:43:09,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:43:09,659 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 17:43:09,669 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/EvenOdd01-1.c[975,988] [2023-12-16 17:43:09,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:43:09,680 INFO L206 MainTranslator]: Completed translation [2023-12-16 17:43:09,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:09 WrapperNode [2023-12-16 17:43:09,680 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 17:43:09,681 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 17:43:09,681 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 17:43:09,681 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 17:43:09,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:09" (1/1) ... [2023-12-16 17:43:09,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:09" (1/1) ... [2023-12-16 17:43:09,700 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2023-12-16 17:43:09,700 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 17:43:09,700 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 17:43:09,700 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 17:43:09,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 17:43:09,707 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:09" (1/1) ... [2023-12-16 17:43:09,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:09" (1/1) ... [2023-12-16 17:43:09,708 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:09" (1/1) ... [2023-12-16 17:43:09,715 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 17:43:09,715 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:09" (1/1) ... [2023-12-16 17:43:09,715 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:09" (1/1) ... [2023-12-16 17:43:09,717 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:09" (1/1) ... [2023-12-16 17:43:09,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:09" (1/1) ... [2023-12-16 17:43:09,719 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:09" (1/1) ... [2023-12-16 17:43:09,720 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:09" (1/1) ... [2023-12-16 17:43:09,721 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 17:43:09,722 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 17:43:09,722 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 17:43:09,722 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 17:43:09,722 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:09" (1/1) ... [2023-12-16 17:43:09,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:43:09,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 17:43:09,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 17:43:09,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 17:43:09,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 17:43:09,769 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2023-12-16 17:43:09,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2023-12-16 17:43:09,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 17:43:09,769 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2023-12-16 17:43:09,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2023-12-16 17:43:09,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 17:43:09,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 17:43:09,813 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 17:43:09,815 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 17:43:09,904 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 17:43:09,920 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 17:43:09,920 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 17:43:09,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:43:09 BoogieIcfgContainer [2023-12-16 17:43:09,922 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 17:43:09,924 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 17:43:09,924 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 17:43:09,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 17:43:09,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:43:09" (1/3) ... [2023-12-16 17:43:09,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea0ac13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:43:09, skipping insertion in model container [2023-12-16 17:43:09,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:09" (2/3) ... [2023-12-16 17:43:09,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea0ac13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:43:09, skipping insertion in model container [2023-12-16 17:43:09,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:43:09" (3/3) ... [2023-12-16 17:43:09,927 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2023-12-16 17:43:09,938 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 17:43:09,938 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 17:43:09,965 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 17:43:09,969 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;@5b3ec4eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 17:43:09,969 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 17:43:09,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 17:43:09,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 17:43:09,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:09,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:09,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:09,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:09,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1415048223, now seen corresponding path program 1 times [2023-12-16 17:43:09,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:09,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840646312] [2023-12-16 17:43:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:43:09,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:09,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:09,990 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:43:10,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 17:43:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:43:10,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 17:43:10,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:10,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:43:10,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:43:10,198 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:10,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840646312] [2023-12-16 17:43:10,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840646312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:43:10,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:43:10,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 17:43:10,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607140697] [2023-12-16 17:43:10,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:43:10,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 17:43:10,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:10,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 17:43:10,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 17:43:10,230 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:43:10,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:10,369 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2023-12-16 17:43:10,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 17:43:10,371 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-12-16 17:43:10,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:10,376 INFO L225 Difference]: With dead ends: 33 [2023-12-16 17:43:10,376 INFO L226 Difference]: Without dead ends: 23 [2023-12-16 17:43:10,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-16 17:43:10,380 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 14 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:10,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 76 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:43:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-16 17:43:10,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-16 17:43:10,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-16 17:43:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-12-16 17:43:10,407 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2023-12-16 17:43:10,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:10,407 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-12-16 17:43:10,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:43:10,407 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-12-16 17:43:10,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-16 17:43:10,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:10,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:10,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 17:43:10,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:10,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:10,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:10,612 INFO L85 PathProgramCache]: Analyzing trace with hash -168268323, now seen corresponding path program 1 times [2023-12-16 17:43:10,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:10,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317035662] [2023-12-16 17:43:10,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:43:10,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:10,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:10,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:43:10,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 17:43:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:43:10,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 17:43:10,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:10,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:43:10,688 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:43:10,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:10,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317035662] [2023-12-16 17:43:10,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317035662] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:43:10,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:43:10,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 17:43:10,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387518588] [2023-12-16 17:43:10,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:43:10,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 17:43:10,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:10,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 17:43:10,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 17:43:10,691 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:43:10,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:10,757 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2023-12-16 17:43:10,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 17:43:10,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-16 17:43:10,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:10,759 INFO L225 Difference]: With dead ends: 29 [2023-12-16 17:43:10,759 INFO L226 Difference]: Without dead ends: 25 [2023-12-16 17:43:10,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-16 17:43:10,760 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:10,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 75 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:43:10,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-16 17:43:10,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2023-12-16 17:43:10,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-16 17:43:10,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-12-16 17:43:10,764 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 11 [2023-12-16 17:43:10,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:10,764 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-12-16 17:43:10,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:43:10,765 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-12-16 17:43:10,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-16 17:43:10,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:10,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:10,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 17:43:10,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:10,985 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:10,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:10,985 INFO L85 PathProgramCache]: Analyzing trace with hash 236008797, now seen corresponding path program 1 times [2023-12-16 17:43:10,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:10,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727541460] [2023-12-16 17:43:10,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:43:10,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:10,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:10,992 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:43:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:43:11,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 17:43:11,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:11,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 17:43:11,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:43:11,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:43:11,112 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:11,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727541460] [2023-12-16 17:43:11,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727541460] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:43:11,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:43:11,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 17:43:11,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030338126] [2023-12-16 17:43:11,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:43:11,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 17:43:11,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:11,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 17:43:11,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 17:43:11,114 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 17:43:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:11,178 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2023-12-16 17:43:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 17:43:11,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-12-16 17:43:11,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:11,180 INFO L225 Difference]: With dead ends: 37 [2023-12-16 17:43:11,180 INFO L226 Difference]: Without dead ends: 25 [2023-12-16 17:43:11,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-16 17:43:11,182 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:11,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 47 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:43:11,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-16 17:43:11,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2023-12-16 17:43:11,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-16 17:43:11,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-12-16 17:43:11,191 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2023-12-16 17:43:11,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:11,191 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-12-16 17:43:11,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 17:43:11,191 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-12-16 17:43:11,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-16 17:43:11,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:11,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:11,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 17:43:11,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:11,395 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:11,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:11,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1342568457, now seen corresponding path program 1 times [2023-12-16 17:43:11,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:11,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867269599] [2023-12-16 17:43:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:43:11,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:11,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:11,417 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:43:11,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 17:43:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:43:11,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 17:43:11,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:11,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:43:11,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:43:11,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:11,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867269599] [2023-12-16 17:43:11,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867269599] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:43:11,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:43:11,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 17:43:11,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23190514] [2023-12-16 17:43:11,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:43:11,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 17:43:11,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:11,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 17:43:11,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-16 17:43:11,538 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 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) [2023-12-16 17:43:11,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:11,646 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2023-12-16 17:43:11,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:43:11,646 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 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 18 [2023-12-16 17:43:11,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:11,647 INFO L225 Difference]: With dead ends: 32 [2023-12-16 17:43:11,647 INFO L226 Difference]: Without dead ends: 28 [2023-12-16 17:43:11,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-16 17:43:11,648 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:11,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 75 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:43:11,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-16 17:43:11,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2023-12-16 17:43:11,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 17:43:11,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2023-12-16 17:43:11,651 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2023-12-16 17:43:11,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:11,652 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2023-12-16 17:43:11,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 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) [2023-12-16 17:43:11,652 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2023-12-16 17:43:11,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-16 17:43:11,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:11,652 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] [2023-12-16 17:43:11,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 17:43:11,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:11,854 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:11,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:11,855 INFO L85 PathProgramCache]: Analyzing trace with hash -246412613, now seen corresponding path program 1 times [2023-12-16 17:43:11,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:11,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710344998] [2023-12-16 17:43:11,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:43:11,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:11,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:11,858 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:43:11,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 17:43:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:43:11,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:43:11,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:11,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 17:43:11,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:43:11,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:11,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710344998] [2023-12-16 17:43:11,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710344998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:43:11,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:43:11,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:43:11,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801579861] [2023-12-16 17:43:11,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:43:11,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:43:11,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:11,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:43:11,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:43:11,899 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 17:43:11,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:11,926 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2023-12-16 17:43:11,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:43:11,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-12-16 17:43:11,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:11,927 INFO L225 Difference]: With dead ends: 38 [2023-12-16 17:43:11,928 INFO L226 Difference]: Without dead ends: 26 [2023-12-16 17:43:11,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:43:11,928 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:11,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 58 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:43:11,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-16 17:43:11,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-16 17:43:11,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 17:43:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-12-16 17:43:11,931 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 24 [2023-12-16 17:43:11,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:11,932 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-12-16 17:43:11,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 17:43:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2023-12-16 17:43:11,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-16 17:43:11,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:11,932 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] [2023-12-16 17:43:11,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-16 17:43:12,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:12,135 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:12,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:12,135 INFO L85 PathProgramCache]: Analyzing trace with hash -962722745, now seen corresponding path program 1 times [2023-12-16 17:43:12,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:12,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398650578] [2023-12-16 17:43:12,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:43:12,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:12,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:12,137 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:43:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:43:12,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 17:43:12,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:12,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 17:43:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 17:43:12,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 17:43:12,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:12,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398650578] [2023-12-16 17:43:12,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398650578] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:12,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:12,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2023-12-16 17:43:12,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456871178] [2023-12-16 17:43:12,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:12,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 17:43:12,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:12,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 17:43:12,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-16 17:43:12,649 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 14 states have internal predecessors, (31), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 17:43:12,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:12,846 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2023-12-16 17:43:12,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 17:43:12,846 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 14 states have internal predecessors, (31), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 25 [2023-12-16 17:43:12,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:12,846 INFO L225 Difference]: With dead ends: 38 [2023-12-16 17:43:12,847 INFO L226 Difference]: Without dead ends: 34 [2023-12-16 17:43:12,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2023-12-16 17:43:12,847 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:12,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 150 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:43:12,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-16 17:43:12,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2023-12-16 17:43:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 17:43:12,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-12-16 17:43:12,851 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 25 [2023-12-16 17:43:12,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:12,851 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-12-16 17:43:12,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 14 states have internal predecessors, (31), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 17:43:12,851 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-12-16 17:43:12,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-16 17:43:12,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:12,852 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:12,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-16 17:43:13,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:13,054 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:13,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:13,055 INFO L85 PathProgramCache]: Analyzing trace with hash -503357871, now seen corresponding path program 1 times [2023-12-16 17:43:13,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:13,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108165961] [2023-12-16 17:43:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:43:13,055 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:13,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:13,056 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:43:13,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 17:43:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:43:13,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-16 17:43:13,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-16 17:43:13,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 17:43:13,672 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:13,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108165961] [2023-12-16 17:43:13,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108165961] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:13,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:13,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 22 [2023-12-16 17:43:13,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625383661] [2023-12-16 17:43:13,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:13,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-16 17:43:13,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:13,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-16 17:43:13,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2023-12-16 17:43:13,673 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-16 17:43:13,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:13,934 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2023-12-16 17:43:13,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 17:43:13,935 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) Word has length 32 [2023-12-16 17:43:13,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:13,935 INFO L225 Difference]: With dead ends: 44 [2023-12-16 17:43:13,935 INFO L226 Difference]: Without dead ends: 40 [2023-12-16 17:43:13,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2023-12-16 17:43:13,936 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 20 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:13,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 151 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:43:13,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-16 17:43:13,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2023-12-16 17:43:13,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 17:43:13,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2023-12-16 17:43:13,939 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 32 [2023-12-16 17:43:13,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:13,939 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2023-12-16 17:43:13,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-16 17:43:13,940 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2023-12-16 17:43:13,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-16 17:43:13,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:13,940 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:13,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 17:43:14,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:14,142 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:14,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:14,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1867179313, now seen corresponding path program 2 times [2023-12-16 17:43:14,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:14,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875998588] [2023-12-16 17:43:14,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:43:14,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:14,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:14,147 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:43:14,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 17:43:14,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:43:14,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:43:14,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-16 17:43:14,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:14,359 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 17:43:14,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 17:43:15,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:15,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875998588] [2023-12-16 17:43:15,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875998588] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:15,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:15,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 33 [2023-12-16 17:43:15,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32840222] [2023-12-16 17:43:15,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:15,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-16 17:43:15,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:15,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-16 17:43:15,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2023-12-16 17:43:15,304 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 33 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 23 states have internal predecessors, (48), 8 states have call successors, (8), 1 states have call predecessors, (8), 10 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2023-12-16 17:43:15,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:15,746 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2023-12-16 17:43:15,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 17:43:15,747 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 23 states have internal predecessors, (48), 8 states have call successors, (8), 1 states have call predecessors, (8), 10 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) Word has length 39 [2023-12-16 17:43:15,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:15,750 INFO L225 Difference]: With dead ends: 50 [2023-12-16 17:43:15,750 INFO L226 Difference]: Without dead ends: 46 [2023-12-16 17:43:15,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=178, Invalid=1628, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 17:43:15,752 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:15,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 259 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:43:15,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-16 17:43:15,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 35. [2023-12-16 17:43:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-16 17:43:15,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2023-12-16 17:43:15,761 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 39 [2023-12-16 17:43:15,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:15,761 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-12-16 17:43:15,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 23 states have internal predecessors, (48), 8 states have call successors, (8), 1 states have call predecessors, (8), 10 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2023-12-16 17:43:15,762 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2023-12-16 17:43:15,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-16 17:43:15,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:15,762 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:15,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 17:43:15,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:15,965 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:15,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:15,965 INFO L85 PathProgramCache]: Analyzing trace with hash -2003597525, now seen corresponding path program 2 times [2023-12-16 17:43:15,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:15,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252551390] [2023-12-16 17:43:15,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:43:15,966 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:15,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:15,969 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:43:15,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 17:43:16,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:43:16,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:43:16,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-16 17:43:16,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:16,254 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-16 17:43:16,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:17,330 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 17:43:17,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:17,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252551390] [2023-12-16 17:43:17,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252551390] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:17,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:17,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 37 [2023-12-16 17:43:17,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711386916] [2023-12-16 17:43:17,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:17,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-16 17:43:17,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:17,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-16 17:43:17,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1218, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 17:43:17,332 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 37 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 25 states have internal predecessors, (55), 9 states have call successors, (9), 1 states have call predecessors, (9), 12 states have return successors, (12), 12 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-16 17:43:17,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:17,816 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2023-12-16 17:43:17,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 17:43:17,816 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 25 states have internal predecessors, (55), 9 states have call successors, (9), 1 states have call predecessors, (9), 12 states have return successors, (12), 12 states have call predecessors, (12), 9 states have call successors, (12) Word has length 46 [2023-12-16 17:43:17,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:17,820 INFO L225 Difference]: With dead ends: 56 [2023-12-16 17:43:17,820 INFO L226 Difference]: Without dead ends: 52 [2023-12-16 17:43:17,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=221, Invalid=2229, Unknown=0, NotChecked=0, Total=2450 [2023-12-16 17:43:17,825 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:17,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 267 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:43:17,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-16 17:43:17,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2023-12-16 17:43:17,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 17:43:17,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2023-12-16 17:43:17,833 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 46 [2023-12-16 17:43:17,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:17,833 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2023-12-16 17:43:17,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 25 states have internal predecessors, (55), 9 states have call successors, (9), 1 states have call predecessors, (9), 12 states have return successors, (12), 12 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-16 17:43:17,835 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2023-12-16 17:43:17,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 17:43:17,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:17,835 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:17,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 17:43:18,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:18,036 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:18,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:18,036 INFO L85 PathProgramCache]: Analyzing trace with hash -48123749, now seen corresponding path program 3 times [2023-12-16 17:43:18,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:18,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902468091] [2023-12-16 17:43:18,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:43:18,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:18,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:18,038 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:43:18,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 17:43:18,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-16 17:43:18,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:43:18,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-16 17:43:18,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-16 17:43:18,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:19,690 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-16 17:43:19,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:19,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902468091] [2023-12-16 17:43:19,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902468091] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:19,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:19,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24] total 42 [2023-12-16 17:43:19,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763609643] [2023-12-16 17:43:19,691 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:19,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-16 17:43:19,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:19,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-16 17:43:19,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1590, Unknown=0, NotChecked=0, Total=1722 [2023-12-16 17:43:19,692 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 42 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 28 states have internal predecessors, (62), 10 states have call successors, (10), 1 states have call predecessors, (10), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2023-12-16 17:43:20,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:20,242 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2023-12-16 17:43:20,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 17:43:20,242 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 28 states have internal predecessors, (62), 10 states have call successors, (10), 1 states have call predecessors, (10), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) Word has length 53 [2023-12-16 17:43:20,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:20,243 INFO L225 Difference]: With dead ends: 62 [2023-12-16 17:43:20,243 INFO L226 Difference]: Without dead ends: 58 [2023-12-16 17:43:20,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=253, Invalid=2827, Unknown=0, NotChecked=0, Total=3080 [2023-12-16 17:43:20,245 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 23 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:20,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 287 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:43:20,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-16 17:43:20,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 41. [2023-12-16 17:43:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 9 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-16 17:43:20,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2023-12-16 17:43:20,249 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 53 [2023-12-16 17:43:20,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:20,249 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2023-12-16 17:43:20,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 28 states have internal predecessors, (62), 10 states have call successors, (10), 1 states have call predecessors, (10), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2023-12-16 17:43:20,250 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2023-12-16 17:43:20,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 17:43:20,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:20,250 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:20,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 17:43:20,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:20,453 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:20,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:20,453 INFO L85 PathProgramCache]: Analyzing trace with hash -2001067387, now seen corresponding path program 3 times [2023-12-16 17:43:20,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:20,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262122692] [2023-12-16 17:43:20,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:43:20,453 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:20,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:20,454 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:43:20,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 17:43:20,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-16 17:43:20,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:43:20,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-16 17:43:20,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-16 17:43:20,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 17:43:22,748 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:22,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262122692] [2023-12-16 17:43:22,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262122692] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:22,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:22,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 28] total 48 [2023-12-16 17:43:22,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462817670] [2023-12-16 17:43:22,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:22,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-16 17:43:22,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:22,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-16 17:43:22,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2101, Unknown=0, NotChecked=0, Total=2256 [2023-12-16 17:43:22,750 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 48 states, 46 states have (on average 1.5) internal successors, (69), 32 states have internal predecessors, (69), 11 states have call successors, (11), 1 states have call predecessors, (11), 16 states have return successors, (16), 16 states have call predecessors, (16), 11 states have call successors, (16) [2023-12-16 17:43:23,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:23,623 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2023-12-16 17:43:23,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-16 17:43:23,623 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 46 states have (on average 1.5) internal successors, (69), 32 states have internal predecessors, (69), 11 states have call successors, (11), 1 states have call predecessors, (11), 16 states have return successors, (16), 16 states have call predecessors, (16), 11 states have call successors, (16) Word has length 60 [2023-12-16 17:43:23,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:23,624 INFO L225 Difference]: With dead ends: 68 [2023-12-16 17:43:23,624 INFO L226 Difference]: Without dead ends: 64 [2023-12-16 17:43:23,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=314, Invalid=3846, Unknown=0, NotChecked=0, Total=4160 [2023-12-16 17:43:23,626 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 30 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:23,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 421 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 17:43:23,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-16 17:43:23,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 44. [2023-12-16 17:43:23,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 10 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-16 17:43:23,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2023-12-16 17:43:23,631 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 60 [2023-12-16 17:43:23,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:23,632 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2023-12-16 17:43:23,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 46 states have (on average 1.5) internal successors, (69), 32 states have internal predecessors, (69), 11 states have call successors, (11), 1 states have call predecessors, (11), 16 states have return successors, (16), 16 states have call predecessors, (16), 11 states have call successors, (16) [2023-12-16 17:43:23,632 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2023-12-16 17:43:23,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-16 17:43:23,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:23,635 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:23,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 17:43:23,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:23,837 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:23,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:23,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1494415739, now seen corresponding path program 4 times [2023-12-16 17:43:23,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:23,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267907972] [2023-12-16 17:43:23,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 17:43:23,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:23,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:23,839 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:43:23,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-16 17:43:23,878 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 17:43:23,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:43:23,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-16 17:43:23,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 17:43:24,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 17:43:25,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:25,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267907972] [2023-12-16 17:43:25,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267907972] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:25,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:25,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 30] total 37 [2023-12-16 17:43:25,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719906749] [2023-12-16 17:43:25,746 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:25,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-16 17:43:25,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-16 17:43:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1216, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 17:43:25,749 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 37 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 26 states have internal predecessors, (61), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (18), 11 states have call predecessors, (18), 12 states have call successors, (18) [2023-12-16 17:43:26,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:26,199 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2023-12-16 17:43:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 17:43:26,199 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 26 states have internal predecessors, (61), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (18), 11 states have call predecessors, (18), 12 states have call successors, (18) Word has length 67 [2023-12-16 17:43:26,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:26,201 INFO L225 Difference]: With dead ends: 74 [2023-12-16 17:43:26,201 INFO L226 Difference]: Without dead ends: 70 [2023-12-16 17:43:26,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=275, Invalid=2695, Unknown=0, NotChecked=0, Total=2970 [2023-12-16 17:43:26,208 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:26,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 336 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:43:26,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-16 17:43:26,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 47. [2023-12-16 17:43:26,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.0625) internal successors, (34), 33 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-16 17:43:26,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2023-12-16 17:43:26,221 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 67 [2023-12-16 17:43:26,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:26,223 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2023-12-16 17:43:26,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 26 states have internal predecessors, (61), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (18), 11 states have call predecessors, (18), 12 states have call successors, (18) [2023-12-16 17:43:26,223 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2023-12-16 17:43:26,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 17:43:26,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:26,239 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:26,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-16 17:43:26,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:26,442 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:26,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:26,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1411305567, now seen corresponding path program 4 times [2023-12-16 17:43:26,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:26,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652202052] [2023-12-16 17:43:26,442 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 17:43:26,442 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:26,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:26,443 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:43:26,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-16 17:43:26,505 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 17:43:26,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:43:26,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-16 17:43:26,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:26,867 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-16 17:43:26,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-16 17:43:28,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:28,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652202052] [2023-12-16 17:43:28,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652202052] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:28,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:28,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 33] total 40 [2023-12-16 17:43:28,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160612226] [2023-12-16 17:43:28,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:28,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-16 17:43:28,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:28,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-16 17:43:28,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1433, Unknown=0, NotChecked=0, Total=1560 [2023-12-16 17:43:28,504 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 40 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 28 states have internal predecessors, (66), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (20), 12 states have call predecessors, (20), 13 states have call successors, (20) [2023-12-16 17:43:29,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:29,221 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2023-12-16 17:43:29,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-16 17:43:29,221 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 28 states have internal predecessors, (66), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (20), 12 states have call predecessors, (20), 13 states have call successors, (20) Word has length 74 [2023-12-16 17:43:29,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:29,222 INFO L225 Difference]: With dead ends: 80 [2023-12-16 17:43:29,222 INFO L226 Difference]: Without dead ends: 76 [2023-12-16 17:43:29,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=327, Invalid=3333, Unknown=0, NotChecked=0, Total=3660 [2023-12-16 17:43:29,223 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:29,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 356 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:43:29,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-16 17:43:29,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 50. [2023-12-16 17:43:29,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-16 17:43:29,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2023-12-16 17:43:29,226 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 74 [2023-12-16 17:43:29,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:29,226 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2023-12-16 17:43:29,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 28 states have internal predecessors, (66), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (20), 12 states have call predecessors, (20), 13 states have call successors, (20) [2023-12-16 17:43:29,226 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2023-12-16 17:43:29,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-16 17:43:29,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:29,227 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:29,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-16 17:43:29,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:29,430 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:29,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:29,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1222670609, now seen corresponding path program 5 times [2023-12-16 17:43:29,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:29,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811456353] [2023-12-16 17:43:29,430 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 17:43:29,430 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:29,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:29,432 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:43:29,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-16 17:43:29,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-16 17:43:29,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:43:29,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-16 17:43:29,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-16 17:43:29,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-16 17:43:31,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:31,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811456353] [2023-12-16 17:43:31,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811456353] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:31,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:31,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 36] total 43 [2023-12-16 17:43:31,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148484961] [2023-12-16 17:43:31,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:31,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-16 17:43:31,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:31,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-16 17:43:31,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1668, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 17:43:31,484 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 43 states, 42 states have (on average 1.6904761904761905) internal successors, (71), 30 states have internal predecessors, (71), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (22), 13 states have call predecessors, (22), 14 states have call successors, (22) [2023-12-16 17:43:32,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:32,407 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2023-12-16 17:43:32,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-16 17:43:32,408 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.6904761904761905) internal successors, (71), 30 states have internal predecessors, (71), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (22), 13 states have call predecessors, (22), 14 states have call successors, (22) Word has length 81 [2023-12-16 17:43:32,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:32,408 INFO L225 Difference]: With dead ends: 86 [2023-12-16 17:43:32,409 INFO L226 Difference]: Without dead ends: 82 [2023-12-16 17:43:32,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=354, Invalid=3806, Unknown=0, NotChecked=0, Total=4160 [2023-12-16 17:43:32,410 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 26 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:32,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 483 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 17:43:32,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-16 17:43:32,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 53. [2023-12-16 17:43:32,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 37 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 13 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-16 17:43:32,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2023-12-16 17:43:32,413 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 81 [2023-12-16 17:43:32,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:32,413 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2023-12-16 17:43:32,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.6904761904761905) internal successors, (71), 30 states have internal predecessors, (71), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (22), 13 states have call predecessors, (22), 14 states have call successors, (22) [2023-12-16 17:43:32,413 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2023-12-16 17:43:32,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-16 17:43:32,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:32,414 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:32,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-16 17:43:32,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:32,614 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:32,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:32,615 INFO L85 PathProgramCache]: Analyzing trace with hash 51720377, now seen corresponding path program 5 times [2023-12-16 17:43:32,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:32,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367607869] [2023-12-16 17:43:32,615 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 17:43:32,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:32,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:32,616 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:43:32,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-16 17:43:32,675 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-16 17:43:32,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:43:32,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-16 17:43:32,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-16 17:43:33,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 17:43:35,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:35,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367607869] [2023-12-16 17:43:35,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367607869] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:35,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:35,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 39] total 46 [2023-12-16 17:43:35,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740936803] [2023-12-16 17:43:35,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:35,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-16 17:43:35,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:35,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-16 17:43:35,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1921, Unknown=0, NotChecked=0, Total=2070 [2023-12-16 17:43:35,250 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 46 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 32 states have internal predecessors, (76), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (24), 14 states have call predecessors, (24), 15 states have call successors, (24) [2023-12-16 17:43:36,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:36,206 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2023-12-16 17:43:36,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-16 17:43:36,207 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 32 states have internal predecessors, (76), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (24), 14 states have call predecessors, (24), 15 states have call successors, (24) Word has length 88 [2023-12-16 17:43:36,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:36,207 INFO L225 Difference]: With dead ends: 92 [2023-12-16 17:43:36,207 INFO L226 Difference]: Without dead ends: 88 [2023-12-16 17:43:36,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=412, Invalid=4558, Unknown=0, NotChecked=0, Total=4970 [2023-12-16 17:43:36,214 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 62 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:36,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 405 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 17:43:36,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-16 17:43:36,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 56. [2023-12-16 17:43:36,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 39 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 14 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-16 17:43:36,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2023-12-16 17:43:36,224 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 88 [2023-12-16 17:43:36,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:36,224 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2023-12-16 17:43:36,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 32 states have internal predecessors, (76), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (24), 14 states have call predecessors, (24), 15 states have call successors, (24) [2023-12-16 17:43:36,225 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2023-12-16 17:43:36,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-16 17:43:36,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:36,225 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:36,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-16 17:43:36,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:36,428 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:36,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:36,428 INFO L85 PathProgramCache]: Analyzing trace with hash -170667559, now seen corresponding path program 6 times [2023-12-16 17:43:36,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:36,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116605472] [2023-12-16 17:43:36,429 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 17:43:36,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:36,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:36,430 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:43:36,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-16 17:43:36,517 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-16 17:43:36,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:43:36,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-16 17:43:36,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:37,073 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-16 17:43:37,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-16 17:43:40,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:40,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116605472] [2023-12-16 17:43:40,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116605472] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:40,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:40,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 42] total 72 [2023-12-16 17:43:40,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961548407] [2023-12-16 17:43:40,478 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:40,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-12-16 17:43:40,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:40,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-12-16 17:43:40,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=4872, Unknown=0, NotChecked=0, Total=5112 [2023-12-16 17:43:40,480 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 72 states, 71 states have (on average 1.4647887323943662) internal successors, (104), 46 states have internal predecessors, (104), 16 states have call successors, (16), 1 states have call predecessors, (16), 26 states have return successors, (26), 26 states have call predecessors, (26), 16 states have call successors, (26) [2023-12-16 17:43:41,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:41,648 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2023-12-16 17:43:41,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-16 17:43:41,649 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.4647887323943662) internal successors, (104), 46 states have internal predecessors, (104), 16 states have call successors, (16), 1 states have call predecessors, (16), 26 states have return successors, (26), 26 states have call predecessors, (26), 16 states have call successors, (26) Word has length 95 [2023-12-16 17:43:41,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:41,649 INFO L225 Difference]: With dead ends: 98 [2023-12-16 17:43:41,649 INFO L226 Difference]: Without dead ends: 94 [2023-12-16 17:43:41,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1521 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=544, Invalid=8962, Unknown=0, NotChecked=0, Total=9506 [2023-12-16 17:43:41,652 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 73 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:41,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 785 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 17:43:41,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-16 17:43:41,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 59. [2023-12-16 17:43:41,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 15 states have return successors, (16), 15 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-16 17:43:41,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2023-12-16 17:43:41,655 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 95 [2023-12-16 17:43:41,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:41,655 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2023-12-16 17:43:41,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.4647887323943662) internal successors, (104), 46 states have internal predecessors, (104), 16 states have call successors, (16), 1 states have call predecessors, (16), 26 states have return successors, (26), 26 states have call predecessors, (26), 16 states have call successors, (26) [2023-12-16 17:43:41,655 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2023-12-16 17:43:41,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 17:43:41,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:41,656 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:41,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-16 17:43:41,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:41,859 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:41,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:41,859 INFO L85 PathProgramCache]: Analyzing trace with hash -291970157, now seen corresponding path program 6 times [2023-12-16 17:43:41,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:41,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894475859] [2023-12-16 17:43:41,859 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 17:43:41,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:41,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:41,860 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:43:41,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-16 17:43:41,943 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-16 17:43:41,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:43:41,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-16 17:43:41,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-16 17:43:42,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-16 17:43:46,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:46,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894475859] [2023-12-16 17:43:46,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894475859] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:46,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:46,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 46] total 78 [2023-12-16 17:43:46,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155055071] [2023-12-16 17:43:46,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:46,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2023-12-16 17:43:46,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:46,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2023-12-16 17:43:46,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=5743, Unknown=0, NotChecked=0, Total=6006 [2023-12-16 17:43:46,714 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 78 states, 76 states have (on average 1.4605263157894737) internal successors, (111), 50 states have internal predecessors, (111), 17 states have call successors, (17), 1 states have call predecessors, (17), 28 states have return successors, (28), 28 states have call predecessors, (28), 17 states have call successors, (28) [2023-12-16 17:43:48,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:48,564 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2023-12-16 17:43:48,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-16 17:43:48,564 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 76 states have (on average 1.4605263157894737) internal successors, (111), 50 states have internal predecessors, (111), 17 states have call successors, (17), 1 states have call predecessors, (17), 28 states have return successors, (28), 28 states have call predecessors, (28), 17 states have call successors, (28) Word has length 102 [2023-12-16 17:43:48,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:48,564 INFO L225 Difference]: With dead ends: 104 [2023-12-16 17:43:48,565 INFO L226 Difference]: Without dead ends: 100 [2023-12-16 17:43:48,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1905 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=623, Invalid=10719, Unknown=0, NotChecked=0, Total=11342 [2023-12-16 17:43:48,566 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 53 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:48,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1004 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 17:43:48,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-16 17:43:48,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 62. [2023-12-16 17:43:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 43 states have internal predecessors, (44), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 16 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-16 17:43:48,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2023-12-16 17:43:48,569 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 102 [2023-12-16 17:43:48,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:48,569 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2023-12-16 17:43:48,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 76 states have (on average 1.4605263157894737) internal successors, (111), 50 states have internal predecessors, (111), 17 states have call successors, (17), 1 states have call predecessors, (17), 28 states have return successors, (28), 28 states have call predecessors, (28), 17 states have call successors, (28) [2023-12-16 17:43:48,569 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2023-12-16 17:43:48,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-16 17:43:48,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:48,570 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:48,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-16 17:43:48,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:48,776 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:48,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:48,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1832089789, now seen corresponding path program 7 times [2023-12-16 17:43:48,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:48,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293470219] [2023-12-16 17:43:48,776 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 17:43:48,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:48,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:48,777 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:43:48,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-16 17:43:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:43:48,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-16 17:43:48,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-12-16 17:43:49,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:52,737 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-16 17:43:52,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:52,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293470219] [2023-12-16 17:43:52,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293470219] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:52,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:52,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 48] total 55 [2023-12-16 17:43:52,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793529539] [2023-12-16 17:43:52,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:52,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-16 17:43:52,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:52,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-16 17:43:52,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2788, Unknown=0, NotChecked=0, Total=2970 [2023-12-16 17:43:52,750 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 55 states, 54 states have (on average 1.6851851851851851) internal successors, (91), 38 states have internal predecessors, (91), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (30), 17 states have call predecessors, (30), 18 states have call successors, (30) [2023-12-16 17:43:54,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:54,084 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2023-12-16 17:43:54,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-16 17:43:54,084 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.6851851851851851) internal successors, (91), 38 states have internal predecessors, (91), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (30), 17 states have call predecessors, (30), 18 states have call successors, (30) Word has length 109 [2023-12-16 17:43:54,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:54,085 INFO L225 Difference]: With dead ends: 110 [2023-12-16 17:43:54,085 INFO L226 Difference]: Without dead ends: 106 [2023-12-16 17:43:54,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=536, Invalid=6604, Unknown=0, NotChecked=0, Total=7140 [2023-12-16 17:43:54,086 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 38 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:54,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 856 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 17:43:54,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-16 17:43:54,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 65. [2023-12-16 17:43:54,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 45 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 17 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-16 17:43:54,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2023-12-16 17:43:54,089 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 109 [2023-12-16 17:43:54,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:54,089 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2023-12-16 17:43:54,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.6851851851851851) internal successors, (91), 38 states have internal predecessors, (91), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (30), 17 states have call predecessors, (30), 18 states have call successors, (30) [2023-12-16 17:43:54,089 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2023-12-16 17:43:54,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-16 17:43:54,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:54,090 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:54,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-12-16 17:43:54,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:54,293 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:54,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:54,293 INFO L85 PathProgramCache]: Analyzing trace with hash -900888339, now seen corresponding path program 7 times [2023-12-16 17:43:54,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:54,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568388996] [2023-12-16 17:43:54,294 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 17:43:54,294 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:43:54,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:54,295 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:43:54,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-16 17:43:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:43:54,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 69 conjunts are in the unsatisfiable core [2023-12-16 17:43:54,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:55,174 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-16 17:43:55,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 322 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-16 17:43:58,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:58,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568388996] [2023-12-16 17:43:58,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568388996] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:58,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:58,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 51] total 58 [2023-12-16 17:43:58,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794070290] [2023-12-16 17:43:58,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:58,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-16 17:43:58,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:58,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-16 17:43:58,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=3113, Unknown=0, NotChecked=0, Total=3306 [2023-12-16 17:43:58,950 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 58 states, 57 states have (on average 1.6842105263157894) internal successors, (96), 40 states have internal predecessors, (96), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (32), 18 states have call predecessors, (32), 19 states have call successors, (32) [2023-12-16 17:44:00,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:00,495 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2023-12-16 17:44:00,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-16 17:44:00,496 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.6842105263157894) internal successors, (96), 40 states have internal predecessors, (96), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (32), 18 states have call predecessors, (32), 19 states have call successors, (32) Word has length 116 [2023-12-16 17:44:00,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:00,496 INFO L225 Difference]: With dead ends: 116 [2023-12-16 17:44:00,496 INFO L226 Difference]: Without dead ends: 112 [2023-12-16 17:44:00,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=606, Invalid=7584, Unknown=0, NotChecked=0, Total=8190 [2023-12-16 17:44:00,498 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 41 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 1502 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:00,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 805 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1502 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 17:44:00,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-16 17:44:00,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 68. [2023-12-16 17:44:00,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 18 states have return successors, (19), 18 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-16 17:44:00,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2023-12-16 17:44:00,501 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 116 [2023-12-16 17:44:00,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:00,501 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2023-12-16 17:44:00,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.6842105263157894) internal successors, (96), 40 states have internal predecessors, (96), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (32), 18 states have call predecessors, (32), 19 states have call successors, (32) [2023-12-16 17:44:00,502 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2023-12-16 17:44:00,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-16 17:44:00,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:00,502 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:00,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-16 17:44:00,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:00,703 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:00,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:00,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1888205011, now seen corresponding path program 8 times [2023-12-16 17:44:00,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:00,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028753664] [2023-12-16 17:44:00,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:44:00,704 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:00,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:00,705 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:44:00,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-16 17:44:00,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:44:00,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:00,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-16 17:44:00,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-16 17:44:01,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:07,395 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 368 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-16 17:44:07,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:07,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028753664] [2023-12-16 17:44:07,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028753664] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:07,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:07,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 55] total 93 [2023-12-16 17:44:07,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238927554] [2023-12-16 17:44:07,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:07,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2023-12-16 17:44:07,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:07,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2023-12-16 17:44:07,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=8239, Unknown=0, NotChecked=0, Total=8556 [2023-12-16 17:44:07,397 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 93 states, 91 states have (on average 1.4505494505494505) internal successors, (132), 59 states have internal predecessors, (132), 20 states have call successors, (20), 1 states have call predecessors, (20), 34 states have return successors, (34), 34 states have call predecessors, (34), 20 states have call successors, (34) [2023-12-16 17:44:09,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:09,391 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2023-12-16 17:44:09,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-16 17:44:09,392 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 91 states have (on average 1.4505494505494505) internal successors, (132), 59 states have internal predecessors, (132), 20 states have call successors, (20), 1 states have call predecessors, (20), 34 states have return successors, (34), 34 states have call predecessors, (34), 20 states have call successors, (34) Word has length 123 [2023-12-16 17:44:09,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:09,393 INFO L225 Difference]: With dead ends: 122 [2023-12-16 17:44:09,393 INFO L226 Difference]: Without dead ends: 118 [2023-12-16 17:44:09,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2748 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=784, Invalid=15218, Unknown=0, NotChecked=0, Total=16002 [2023-12-16 17:44:09,394 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 51 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:09,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1167 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 17:44:09,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-16 17:44:09,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 71. [2023-12-16 17:44:09,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 49 states have internal predecessors, (50), 3 states have call successors, (3), 2 states have call predecessors, (3), 19 states have return successors, (20), 19 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-16 17:44:09,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2023-12-16 17:44:09,397 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 123 [2023-12-16 17:44:09,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:09,397 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2023-12-16 17:44:09,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 91 states have (on average 1.4505494505494505) internal successors, (132), 59 states have internal predecessors, (132), 20 states have call successors, (20), 1 states have call predecessors, (20), 34 states have return successors, (34), 34 states have call predecessors, (34), 20 states have call successors, (34) [2023-12-16 17:44:09,398 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2023-12-16 17:44:09,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-16 17:44:09,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:09,398 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:09,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-12-16 17:44:09,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:09,601 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:09,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:09,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1048494279, now seen corresponding path program 8 times [2023-12-16 17:44:09,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:09,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452839147] [2023-12-16 17:44:09,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:44:09,602 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:09,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:09,616 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:44:09,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-16 17:44:09,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:44:09,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:09,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-16 17:44:09,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-12-16 17:44:10,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:44:16,477 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-16 17:44:16,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:44:16,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452839147] [2023-12-16 17:44:16,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452839147] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:44:16,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:44:16,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 58] total 98 [2023-12-16 17:44:16,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764841475] [2023-12-16 17:44:16,478 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:44:16,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-12-16 17:44:16,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:44:16,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-12-16 17:44:16,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=9171, Unknown=0, NotChecked=0, Total=9506 [2023-12-16 17:44:16,480 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 98 states, 96 states have (on average 1.4479166666666667) internal successors, (139), 62 states have internal predecessors, (139), 21 states have call successors, (21), 1 states have call predecessors, (21), 36 states have return successors, (36), 36 states have call predecessors, (36), 21 states have call successors, (36) [2023-12-16 17:44:18,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:44:18,958 INFO L93 Difference]: Finished difference Result 128 states and 130 transitions. [2023-12-16 17:44:18,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-16 17:44:18,958 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 96 states have (on average 1.4479166666666667) internal successors, (139), 62 states have internal predecessors, (139), 21 states have call successors, (21), 1 states have call predecessors, (21), 36 states have return successors, (36), 36 states have call predecessors, (36), 21 states have call successors, (36) Word has length 130 [2023-12-16 17:44:18,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:44:18,961 INFO L225 Difference]: With dead ends: 128 [2023-12-16 17:44:18,961 INFO L226 Difference]: Without dead ends: 124 [2023-12-16 17:44:18,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3115 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=869, Invalid=17221, Unknown=0, NotChecked=0, Total=18090 [2023-12-16 17:44:18,963 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 37 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 2745 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:18,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 1401 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2745 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 17:44:18,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-16 17:44:18,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 74. [2023-12-16 17:44:18,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.04) internal successors, (52), 51 states have internal predecessors, (52), 3 states have call successors, (3), 2 states have call predecessors, (3), 20 states have return successors, (21), 20 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-16 17:44:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2023-12-16 17:44:18,984 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 130 [2023-12-16 17:44:18,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:44:18,984 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2023-12-16 17:44:18,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 96 states have (on average 1.4479166666666667) internal successors, (139), 62 states have internal predecessors, (139), 21 states have call successors, (21), 1 states have call predecessors, (21), 36 states have return successors, (36), 36 states have call predecessors, (36), 21 states have call successors, (36) [2023-12-16 17:44:18,984 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2023-12-16 17:44:18,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-16 17:44:18,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:44:18,985 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:44:18,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-12-16 17:44:19,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:19,189 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:44:19,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:44:19,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1461866089, now seen corresponding path program 9 times [2023-12-16 17:44:19,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:44:19,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449632896] [2023-12-16 17:44:19,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:44:19,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:19,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:44:19,191 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:44:19,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-16 17:44:19,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-16 17:44:19,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:44:19,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-16 17:44:19,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:44:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-12-16 17:44:20,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 17:44:24,182 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 17:44:24,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-16 17:44:24,204 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:44:24,204 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:44:24,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:44:24,385 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 138 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while TransFormulaUtils was doing sequential composition of 6 TransFormulas,while SimplifyDDA2 was simplifying a ∧-6-1 term,while SimplifyDDA2 was simplifying 6 xjuncts wrt. a ATOM-1 context. [2023-12-16 17:44:24,390 INFO L445 BasicCegarLoop]: Path program histogram: [9, 8, 1, 1, 1, 1, 1] [2023-12-16 17:44:24,392 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 17:44:24,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:44:24 BoogieIcfgContainer [2023-12-16 17:44:24,400 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 17:44:24,401 INFO L158 Benchmark]: Toolchain (without parser) took 74881.00ms. Allocated memory was 224.4MB in the beginning and 562.0MB in the end (delta: 337.6MB). Free memory was 181.3MB in the beginning and 267.5MB in the end (delta: -86.3MB). Peak memory consumption was 252.2MB. Max. memory is 8.0GB. [2023-12-16 17:44:24,401 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 134.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 17:44:24,401 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.25ms. Allocated memory is still 224.4MB. Free memory was 181.3MB in the beginning and 170.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 17:44:24,401 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.94ms. Allocated memory is still 224.4MB. Free memory was 170.2MB in the beginning and 168.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 17:44:24,401 INFO L158 Benchmark]: Boogie Preprocessor took 20.96ms. Allocated memory is still 224.4MB. Free memory was 168.7MB in the beginning and 167.0MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 17:44:24,401 INFO L158 Benchmark]: RCFGBuilder took 200.52ms. Allocated memory is still 224.4MB. Free memory was 166.9MB in the beginning and 155.1MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 17:44:24,401 INFO L158 Benchmark]: TraceAbstraction took 74476.48ms. Allocated memory was 224.4MB in the beginning and 562.0MB in the end (delta: 337.6MB). Free memory was 154.5MB in the beginning and 267.5MB in the end (delta: -113.1MB). Peak memory consumption was 226.0MB. Max. memory is 8.0GB. [2023-12-16 17:44:24,402 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 134.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 160.25ms. Allocated memory is still 224.4MB. Free memory was 181.3MB in the beginning and 170.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.94ms. Allocated memory is still 224.4MB. Free memory was 170.2MB in the beginning and 168.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.96ms. Allocated memory is still 224.4MB. Free memory was 168.7MB in the beginning and 167.0MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 200.52ms. Allocated memory is still 224.4MB. Free memory was 166.9MB in the beginning and 155.1MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 74476.48ms. Allocated memory was 224.4MB in the beginning and 562.0MB in the end (delta: 337.6MB). Free memory was 154.5MB in the beginning and 267.5MB in the end (delta: -113.1MB). Peak memory consumption was 226.0MB. 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: 49]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 49). Cancelled while NwaCegarLoop was analyzing trace of length 138 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while TransFormulaUtils was doing sequential composition of 6 TransFormulas,while SimplifyDDA2 was simplifying a ∧-6-1 term,while SimplifyDDA2 was simplifying 6 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 74.4s, OverallIterations: 22, TraceHistogramMax: 10, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 16.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 717 SdHoareTripleChecker+Valid, 7.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 595 mSDsluCounter, 9464 SdHoareTripleChecker+Invalid, 6.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9057 mSDsCounter, 159 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17171 IncrementalHoareTripleChecker+Invalid, 17330 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 159 mSolverCounterUnsat, 407 mSDtfsCounter, 17171 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2877 GetRequests, 1703 SyntacticMatches, 5 SemanticMatches, 1169 ConstructedPredicates, 0 IntricatePredicates, 5 DeprecatedPredicates, 13937 ImplicationChecksByTransitivity, 27.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=21, InterpolantAutomatonStates: 476, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 446 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 46.7s InterpolantComputationTime, 1320 NumberOfCodeBlocks, 1320 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 2523 ConstructedInterpolants, 5 QuantifiedInterpolants, 14374 SizeOfPredicates, 193 NumberOfNonLiveVariables, 1968 ConjunctsInSsa, 802 ConjunctsInUnsatCore, 37 InterpolantComputations, 5 PerfectInterpolantSequences, 2152/5932 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