/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/loops-crafted-1/mono-crafted_8.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 23:41:20,705 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 23:41:20,760 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 23:41:20,765 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 23:41:20,765 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 23:41:20,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 23:41:20,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 23:41:20,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 23:41:20,786 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 23:41:20,786 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 23:41:20,787 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 23:41:20,787 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 23:41:20,787 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 23:41:20,787 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 23:41:20,788 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 23:41:20,788 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 23:41:20,788 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 23:41:20,788 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 23:41:20,789 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 23:41:20,789 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 23:41:20,789 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 23:41:20,793 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 23:41:20,793 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 23:41:20,793 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 23:41:20,795 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 23:41:20,796 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 23:41:20,796 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 23:41:20,796 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 23:41:20,797 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 23:41:20,797 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 23:41:20,797 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 23:41:20,798 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 23:41:20,798 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 23:41:20,798 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 23:41:20,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 23:41:20,798 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 23:41:20,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 23:41:20,798 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 23:41:20,798 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 23:41:20,798 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 23:41:20,799 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 23:41:20,799 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 23:41:20,799 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 23:41:20,799 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 23:41:20,799 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 23:41:20,799 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 23:41:20,799 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 23:41:20,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 23:41:20,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 23:41:20,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 23:41:21,000 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 23:41:21,000 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 23:41:21,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_8.c [2023-12-24 23:41:21,905 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 23:41:22,063 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 23:41:22,064 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_8.c [2023-12-24 23:41:22,069 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/099369934/e597c1f700ee4934bfd2ea27c9433d57/FLAGc125af557 [2023-12-24 23:41:22,477 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/099369934/e597c1f700ee4934bfd2ea27c9433d57 [2023-12-24 23:41:22,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 23:41:22,482 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 23:41:22,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 23:41:22,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 23:41:22,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 23:41:22,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:41:22" (1/1) ... [2023-12-24 23:41:22,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57afe5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:41:22, skipping insertion in model container [2023-12-24 23:41:22,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:41:22" (1/1) ... [2023-12-24 23:41:22,510 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 23:41:22,627 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_8.c[318,331] [2023-12-24 23:41:22,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 23:41:22,643 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 23:41:22,651 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_8.c[318,331] [2023-12-24 23:41:22,653 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 23:41:22,661 INFO L206 MainTranslator]: Completed translation [2023-12-24 23:41:22,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:41:22 WrapperNode [2023-12-24 23:41:22,662 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 23:41:22,663 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 23:41:22,663 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 23:41:22,663 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 23:41:22,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:41:22" (1/1) ... [2023-12-24 23:41:22,671 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:41:22" (1/1) ... [2023-12-24 23:41:22,681 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2023-12-24 23:41:22,682 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 23:41:22,682 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 23:41:22,682 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 23:41:22,682 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 23:41:22,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:41:22" (1/1) ... [2023-12-24 23:41:22,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:41:22" (1/1) ... [2023-12-24 23:41:22,692 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:41:22" (1/1) ... [2023-12-24 23:41:22,700 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]. [2023-12-24 23:41:22,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:41:22" (1/1) ... [2023-12-24 23:41:22,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:41:22" (1/1) ... [2023-12-24 23:41:22,703 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:41:22" (1/1) ... [2023-12-24 23:41:22,704 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:41:22" (1/1) ... [2023-12-24 23:41:22,705 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:41:22" (1/1) ... [2023-12-24 23:41:22,706 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:41:22" (1/1) ... [2023-12-24 23:41:22,711 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 23:41:22,712 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 23:41:22,712 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 23:41:22,712 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 23:41:22,713 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:41:22" (1/1) ... [2023-12-24 23:41:22,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 23:41:22,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 23:41:22,736 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) [2023-12-24 23:41:22,740 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 [2023-12-24 23:41:22,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 23:41:22,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 23:41:22,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 23:41:22,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 23:41:22,806 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 23:41:22,809 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 23:41:22,907 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 23:41:22,939 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 23:41:22,939 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 23:41:22,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:41:22 BoogieIcfgContainer [2023-12-24 23:41:22,939 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 23:41:22,942 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 23:41:22,942 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 23:41:22,944 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 23:41:22,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 11:41:22" (1/3) ... [2023-12-24 23:41:22,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e61b3ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:41:22, skipping insertion in model container [2023-12-24 23:41:22,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:41:22" (2/3) ... [2023-12-24 23:41:22,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e61b3ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:41:22, skipping insertion in model container [2023-12-24 23:41:22,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:41:22" (3/3) ... [2023-12-24 23:41:22,946 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_8.c [2023-12-24 23:41:22,957 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 23:41:22,958 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 23:41:22,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 23:41:22,998 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;@2c87a7d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 23:41:22,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 23:41:23,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:23,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-24 23:41:23,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:41:23,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-24 23:41:23,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:41:23,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:41:23,010 INFO L85 PathProgramCache]: Analyzing trace with hash 63417192, now seen corresponding path program 1 times [2023-12-24 23:41:23,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:41:23,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168245677] [2023-12-24 23:41:23,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:41:23,019 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 [2023-12-24 23:41:23,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:41:23,021 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) [2023-12-24 23:41:23,023 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 [2023-12-24 23:41:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:41:23,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 23:41:23,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:41:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:41:23,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:41:23,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:41:23,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168245677] [2023-12-24 23:41:23,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168245677] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:41:23,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:41:23,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 23:41:23,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641224949] [2023-12-24 23:41:23,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:41:23,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 23:41:23,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:41:23,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 23:41:23,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 23:41:23,100 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:23,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:41:23,113 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2023-12-24 23:41:23,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 23:41:23,114 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-24 23:41:23,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:41:23,119 INFO L225 Difference]: With dead ends: 16 [2023-12-24 23:41:23,119 INFO L226 Difference]: Without dead ends: 8 [2023-12-24 23:41:23,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 23:41:23,123 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:41:23,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:41:23,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-12-24 23:41:23,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-12-24 23:41:23,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:23,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2023-12-24 23:41:23,142 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2023-12-24 23:41:23,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:41:23,142 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2023-12-24 23:41:23,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:23,143 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2023-12-24 23:41:23,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-24 23:41:23,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:41:23,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-24 23:41:23,145 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 (2)] Ended with exit code 0 [2023-12-24 23:41:23,345 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 [2023-12-24 23:41:23,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:41:23,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:41:23,346 INFO L85 PathProgramCache]: Analyzing trace with hash 63089491, now seen corresponding path program 1 times [2023-12-24 23:41:23,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:41:23,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645943312] [2023-12-24 23:41:23,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:41:23,347 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 [2023-12-24 23:41:23,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:41:23,348 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) [2023-12-24 23:41:23,349 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 [2023-12-24 23:41:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:41:23,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 23:41:23,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:41:23,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:41:23,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:41:23,407 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:41:23,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645943312] [2023-12-24 23:41:23,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645943312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:41:23,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:41:23,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 23:41:23,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56468659] [2023-12-24 23:41:23,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:41:23,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 23:41:23,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:41:23,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 23:41:23,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 23:41:23,409 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:23,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:41:23,432 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2023-12-24 23:41:23,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 23:41:23,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-24 23:41:23,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:41:23,433 INFO L225 Difference]: With dead ends: 18 [2023-12-24 23:41:23,433 INFO L226 Difference]: Without dead ends: 11 [2023-12-24 23:41:23,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 23:41:23,434 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:41:23,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:41:23,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-24 23:41:23,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2023-12-24 23:41:23,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-12-24 23:41:23,437 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2023-12-24 23:41:23,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:41:23,437 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-12-24 23:41:23,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:23,438 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-12-24 23:41:23,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-24 23:41:23,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:41:23,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:41:23,447 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 [2023-12-24 23:41:23,638 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 [2023-12-24 23:41:23,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:41:23,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:41:23,640 INFO L85 PathProgramCache]: Analyzing trace with hash -100395752, now seen corresponding path program 1 times [2023-12-24 23:41:23,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:41:23,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758963396] [2023-12-24 23:41:23,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:41:23,640 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 [2023-12-24 23:41:23,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:41:23,642 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) [2023-12-24 23:41:23,648 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 (4)] Waiting until timeout for monitored process [2023-12-24 23:41:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:41:23,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 23:41:23,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:41:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:41:23,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:41:23,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:41:23,773 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:41:23,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758963396] [2023-12-24 23:41:23,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758963396] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:41:23,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:41:23,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-24 23:41:23,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189435485] [2023-12-24 23:41:23,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:41:23,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 23:41:23,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:41:23,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 23:41:23,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-24 23:41:23,786 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:23,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:41:23,854 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2023-12-24 23:41:23,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 23:41:23,855 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-24 23:41:23,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:41:23,856 INFO L225 Difference]: With dead ends: 25 [2023-12-24 23:41:23,856 INFO L226 Difference]: Without dead ends: 18 [2023-12-24 23:41:23,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-24 23:41:23,860 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:41:23,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 16 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:41:23,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-24 23:41:23,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-24 23:41:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-12-24 23:41:23,865 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8 [2023-12-24 23:41:23,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:41:23,865 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-12-24 23:41:23,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:23,866 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-12-24 23:41:23,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-24 23:41:23,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:41:23,866 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1] [2023-12-24 23:41:23,870 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 [2023-12-24 23:41:24,068 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 [2023-12-24 23:41:24,069 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:41:24,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:41:24,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1140498195, now seen corresponding path program 2 times [2023-12-24 23:41:24,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:41:24,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439321185] [2023-12-24 23:41:24,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:41:24,070 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 [2023-12-24 23:41:24,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:41:24,073 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) [2023-12-24 23:41:24,074 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 [2023-12-24 23:41:24,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:41:24,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:41:24,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 23:41:24,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:41:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:41:24,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:41:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:41:24,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:41:24,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439321185] [2023-12-24 23:41:24,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439321185] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:41:24,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:41:24,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-24 23:41:24,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913501468] [2023-12-24 23:41:24,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:41:24,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 23:41:24,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:41:24,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 23:41:24,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-24 23:41:24,368 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:24,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:41:24,678 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2023-12-24 23:41:24,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 23:41:24,678 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-24 23:41:24,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:41:24,679 INFO L225 Difference]: With dead ends: 45 [2023-12-24 23:41:24,679 INFO L226 Difference]: Without dead ends: 36 [2023-12-24 23:41:24,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-24 23:41:24,680 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 27 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 23:41:24,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 31 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 23:41:24,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-24 23:41:24,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-24 23:41:24,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:24,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2023-12-24 23:41:24,685 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 17 [2023-12-24 23:41:24,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:41:24,685 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2023-12-24 23:41:24,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:24,685 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2023-12-24 23:41:24,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-24 23:41:24,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:41:24,686 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1] [2023-12-24 23:41:24,692 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 (5)] Ended with exit code 0 [2023-12-24 23:41:24,889 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 [2023-12-24 23:41:24,890 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:41:24,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:41:24,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1831092403, now seen corresponding path program 3 times [2023-12-24 23:41:24,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:41:24,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78261448] [2023-12-24 23:41:24,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:41:24,891 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 [2023-12-24 23:41:24,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:41:24,892 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) [2023-12-24 23:41:24,894 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 [2023-12-24 23:41:24,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-24 23:41:24,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:41:24,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 23:41:24,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:41:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-24 23:41:25,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 23:41:25,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:41:25,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78261448] [2023-12-24 23:41:25,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78261448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 23:41:25,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 23:41:25,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 23:41:25,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62910419] [2023-12-24 23:41:25,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 23:41:25,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 23:41:25,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:41:25,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 23:41:25,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 23:41:25,007 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:25,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:41:25,038 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2023-12-24 23:41:25,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 23:41:25,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-24 23:41:25,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:41:25,044 INFO L225 Difference]: With dead ends: 62 [2023-12-24 23:41:25,044 INFO L226 Difference]: Without dead ends: 58 [2023-12-24 23:41:25,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-24 23:41:25,044 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:41:25,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 9 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:41:25,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-24 23:41:25,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 36. [2023-12-24 23:41:25,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:25,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2023-12-24 23:41:25,050 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 35 [2023-12-24 23:41:25,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:41:25,050 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2023-12-24 23:41:25,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:25,050 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2023-12-24 23:41:25,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-24 23:41:25,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:41:25,051 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-12-24 23:41:25,055 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 (6)] Forceful destruction successful, exit code 0 [2023-12-24 23:41:25,252 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 [2023-12-24 23:41:25,253 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:41:25,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:41:25,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1773834101, now seen corresponding path program 1 times [2023-12-24 23:41:25,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:41:25,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790932557] [2023-12-24 23:41:25,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 23:41:25,254 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 [2023-12-24 23:41:25,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:41:25,255 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) [2023-12-24 23:41:25,256 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 [2023-12-24 23:41:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:41:25,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 23:41:25,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:41:25,368 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 19 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:41:25,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:41:25,558 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 19 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:41:25,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:41:25,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790932557] [2023-12-24 23:41:25,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790932557] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:41:25,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:41:25,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-12-24 23:41:25,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951629986] [2023-12-24 23:41:25,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:41:25,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 23:41:25,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:41:25,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 23:41:25,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2023-12-24 23:41:25,560 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 21 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:26,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:41:26,044 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2023-12-24 23:41:26,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 23:41:26,045 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 21 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-24 23:41:26,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:41:26,045 INFO L225 Difference]: With dead ends: 87 [2023-12-24 23:41:26,045 INFO L226 Difference]: Without dead ends: 69 [2023-12-24 23:41:26,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=339, Invalid=591, Unknown=0, NotChecked=0, Total=930 [2023-12-24 23:41:26,046 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 11 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:41:26,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 35 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 23:41:26,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-24 23:41:26,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-12-24 23:41:26,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:26,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2023-12-24 23:41:26,054 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 35 [2023-12-24 23:41:26,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:41:26,054 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2023-12-24 23:41:26,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 21 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:26,054 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2023-12-24 23:41:26,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-24 23:41:26,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:41:26,055 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 1, 1, 1, 1, 1, 1] [2023-12-24 23:41:26,059 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 (7)] Forceful destruction successful, exit code 0 [2023-12-24 23:41:26,257 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 [2023-12-24 23:41:26,258 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:41:26,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:41:26,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1186010854, now seen corresponding path program 2 times [2023-12-24 23:41:26,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:41:26,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535767133] [2023-12-24 23:41:26,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:41:26,259 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 [2023-12-24 23:41:26,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:41:26,260 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) [2023-12-24 23:41:26,260 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 [2023-12-24 23:41:26,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:41:26,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:41:26,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 23:41:26,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:41:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 41 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:41:26,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:41:27,219 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 41 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:41:27,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:41:27,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535767133] [2023-12-24 23:41:27,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535767133] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:41:27,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:41:27,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2023-12-24 23:41:27,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167714446] [2023-12-24 23:41:27,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:41:27,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-24 23:41:27,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:41:27,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-24 23:41:27,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=1366, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 23:41:27,222 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 44 states, 44 states have (on average 2.977272727272727) internal successors, (131), 43 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:29,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:41:29,569 INFO L93 Difference]: Finished difference Result 144 states and 168 transitions. [2023-12-24 23:41:29,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-24 23:41:29,570 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.977272727272727) internal successors, (131), 43 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-24 23:41:29,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:41:29,571 INFO L225 Difference]: With dead ends: 144 [2023-12-24 23:41:29,571 INFO L226 Difference]: Without dead ends: 135 [2023-12-24 23:41:29,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1406, Invalid=2626, Unknown=0, NotChecked=0, Total=4032 [2023-12-24 23:41:29,572 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 23 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 23:41:29,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 74 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 23:41:29,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-12-24 23:41:29,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2023-12-24 23:41:29,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.0149253731343284) internal successors, (136), 134 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:29,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2023-12-24 23:41:29,585 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 68 [2023-12-24 23:41:29,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:41:29,585 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2023-12-24 23:41:29,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.977272727272727) internal successors, (131), 43 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2023-12-24 23:41:29,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-24 23:41:29,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:41:29,588 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 42, 1, 1, 1, 1, 1, 1] [2023-12-24 23:41:29,593 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 [2023-12-24 23:41:29,793 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 [2023-12-24 23:41:29,793 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:41:29,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:41:29,793 INFO L85 PathProgramCache]: Analyzing trace with hash 523367546, now seen corresponding path program 3 times [2023-12-24 23:41:29,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:41:29,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132612724] [2023-12-24 23:41:29,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 23:41:29,794 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 [2023-12-24 23:41:29,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:41:29,795 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) [2023-12-24 23:41:29,797 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 [2023-12-24 23:41:29,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-24 23:41:29,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:41:29,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 23:41:29,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:41:30,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2023-12-24 23:41:30,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:41:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2023-12-24 23:41:31,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:41:31,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132612724] [2023-12-24 23:41:31,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132612724] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:41:31,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:41:31,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-24 23:41:31,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248123073] [2023-12-24 23:41:31,348 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:41:31,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 23:41:31,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:41:31,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 23:41:31,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-24 23:41:31,349 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:31,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:41:31,459 INFO L93 Difference]: Finished difference Result 157 states and 167 transitions. [2023-12-24 23:41:31,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 23:41:31,460 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-12-24 23:41:31,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:41:31,461 INFO L225 Difference]: With dead ends: 157 [2023-12-24 23:41:31,461 INFO L226 Difference]: Without dead ends: 148 [2023-12-24 23:41:31,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=187, Unknown=0, NotChecked=0, Total=306 [2023-12-24 23:41:31,461 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 33 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:41:31,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 15 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 23:41:31,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-24 23:41:31,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2023-12-24 23:41:31,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.0342465753424657) internal successors, (151), 146 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:31,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 151 transitions. [2023-12-24 23:41:31,471 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 151 transitions. Word has length 134 [2023-12-24 23:41:31,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:41:31,471 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 151 transitions. [2023-12-24 23:41:31,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:31,472 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 151 transitions. [2023-12-24 23:41:31,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 23:41:31,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:41:31,473 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 42, 5, 1, 1, 1, 1, 1] [2023-12-24 23:41:31,477 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 (9)] Ended with exit code 0 [2023-12-24 23:41:31,674 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 [2023-12-24 23:41:31,677 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:41:31,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:41:31,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1957541690, now seen corresponding path program 4 times [2023-12-24 23:41:31,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:41:31,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009624876] [2023-12-24 23:41:31,678 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 23:41:31,678 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 [2023-12-24 23:41:31,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:41:31,679 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) [2023-12-24 23:41:31,680 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 [2023-12-24 23:41:31,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 23:41:31,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:41:31,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-24 23:41:31,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:41:32,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 597 proven. 2667 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-24 23:41:32,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:41:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 597 proven. 2667 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-24 23:41:34,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:41:34,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009624876] [2023-12-24 23:41:34,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009624876] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:41:34,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:41:34,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2023-12-24 23:41:34,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348073100] [2023-12-24 23:41:34,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:41:34,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2023-12-24 23:41:34,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:41:34,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2023-12-24 23:41:34,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2022, Invalid=5634, Unknown=0, NotChecked=0, Total=7656 [2023-12-24 23:41:34,951 INFO L87 Difference]: Start difference. First operand 147 states and 151 transitions. Second operand has 88 states, 88 states have (on average 3.0113636363636362) internal successors, (265), 87 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:47,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:41:47,887 INFO L93 Difference]: Finished difference Result 300 states and 352 transitions. [2023-12-24 23:41:47,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-24 23:41:47,888 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 3.0113636363636362) internal successors, (265), 87 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2023-12-24 23:41:47,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:41:47,890 INFO L225 Difference]: With dead ends: 300 [2023-12-24 23:41:47,890 INFO L226 Difference]: Without dead ends: 279 [2023-12-24 23:41:47,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=5718, Invalid=11052, Unknown=0, NotChecked=0, Total=16770 [2023-12-24 23:41:47,893 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 44 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 5805 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 5807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-24 23:41:47,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 134 Invalid, 5807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5805 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-24 23:41:47,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-12-24 23:41:47,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2023-12-24 23:41:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.0179856115107915) internal successors, (283), 278 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:47,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 283 transitions. [2023-12-24 23:41:47,911 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 283 transitions. Word has length 146 [2023-12-24 23:41:47,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:41:47,911 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 283 transitions. [2023-12-24 23:41:47,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 3.0113636363636362) internal successors, (265), 87 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:41:47,911 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 283 transitions. [2023-12-24 23:41:47,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-12-24 23:41:47,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:41:47,914 INFO L195 NwaCegarLoop]: trace histogram [91, 91, 86, 5, 1, 1, 1, 1, 1] [2023-12-24 23:41:47,919 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 [2023-12-24 23:41:48,114 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 [2023-12-24 23:41:48,114 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:41:48,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:41:48,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1315481082, now seen corresponding path program 5 times [2023-12-24 23:41:48,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:41:48,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663625491] [2023-12-24 23:41:48,115 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 23:41:48,115 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 [2023-12-24 23:41:48,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:41:48,116 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) [2023-12-24 23:41:48,117 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 [2023-12-24 23:41:48,653 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 92 check-sat command(s) [2023-12-24 23:41:48,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:41:48,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 144 conjunts are in the unsatisfiable core [2023-12-24 23:41:48,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:41:51,413 INFO L134 CoverageAnalysis]: Checked inductivity of 12376 backedges. 1213 proven. 11137 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-24 23:41:51,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:42:03,259 INFO L134 CoverageAnalysis]: Checked inductivity of 12376 backedges. 1213 proven. 11137 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-24 23:42:03,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:42:03,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663625491] [2023-12-24 23:42:03,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663625491] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:42:03,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:42:03,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 89] total 176 [2023-12-24 23:42:03,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234038775] [2023-12-24 23:42:03,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:42:03,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 177 states [2023-12-24 23:42:03,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:42:03,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2023-12-24 23:42:03,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8008, Invalid=23144, Unknown=0, NotChecked=0, Total=31152 [2023-12-24 23:42:03,267 INFO L87 Difference]: Start difference. First operand 279 states and 283 transitions. Second operand has 177 states, 177 states have (on average 2.9887005649717513) internal successors, (529), 176 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:43:50,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:43:50,840 INFO L93 Difference]: Finished difference Result 564 states and 660 transitions. [2023-12-24 23:43:50,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2023-12-24 23:43:50,841 INFO L78 Accepts]: Start accepts. Automaton has has 177 states, 177 states have (on average 2.9887005649717513) internal successors, (529), 176 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 278 [2023-12-24 23:43:50,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:43:50,843 INFO L225 Difference]: With dead ends: 564 [2023-12-24 23:43:50,843 INFO L226 Difference]: Without dead ends: 543 [2023-12-24 23:43:50,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3913 ImplicationChecksByTransitivity, 114.2s TimeCoverageRelationStatistics Valid=23583, Invalid=46377, Unknown=0, NotChecked=0, Total=69960 [2023-12-24 23:43:50,848 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 514 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 23207 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 23381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 23207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-24 23:43:50,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 142 Invalid, 23381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 23207 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-24 23:43:50,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2023-12-24 23:43:50,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2023-12-24 23:43:50,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 542 states have (on average 1.0092250922509225) internal successors, (547), 542 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:43:50,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 547 transitions. [2023-12-24 23:43:50,877 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 547 transitions. Word has length 278 [2023-12-24 23:43:50,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:43:50,877 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 547 transitions. [2023-12-24 23:43:50,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 177 states, 177 states have (on average 2.9887005649717513) internal successors, (529), 176 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:43:50,878 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 547 transitions. [2023-12-24 23:43:50,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2023-12-24 23:43:50,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:43:50,883 INFO L195 NwaCegarLoop]: trace histogram [179, 179, 174, 5, 1, 1, 1, 1, 1] [2023-12-24 23:43:50,896 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 [2023-12-24 23:43:51,088 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 [2023-12-24 23:43:51,088 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:43:51,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:43:51,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1765121158, now seen corresponding path program 6 times [2023-12-24 23:43:51,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:43:51,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691724806] [2023-12-24 23:43:51,089 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:43:51,089 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 [2023-12-24 23:43:51,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:43:51,090 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) [2023-12-24 23:43:51,112 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 [2023-12-24 23:43:51,160 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-12-24 23:43:51,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:43:51,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 23:43:51,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:43:51,773 INFO L134 CoverageAnalysis]: Checked inductivity of 47972 backedges. 2952 proven. 40 refuted. 0 times theorem prover too weak. 44980 trivial. 0 not checked. [2023-12-24 23:43:51,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:43:56,659 INFO L134 CoverageAnalysis]: Checked inductivity of 47972 backedges. 0 proven. 2992 refuted. 0 times theorem prover too weak. 44980 trivial. 0 not checked. [2023-12-24 23:43:56,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:43:56,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691724806] [2023-12-24 23:43:56,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691724806] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:43:56,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:43:56,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 21 [2023-12-24 23:43:56,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980928905] [2023-12-24 23:43:56,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:43:56,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 23:43:56,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:43:56,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 23:43:56,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2023-12-24 23:43:56,661 INFO L87 Difference]: Start difference. First operand 543 states and 547 transitions. Second operand has 22 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:43:57,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:43:57,104 INFO L93 Difference]: Finished difference Result 844 states and 868 transitions. [2023-12-24 23:43:57,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 23:43:57,104 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 542 [2023-12-24 23:43:57,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:43:57,106 INFO L225 Difference]: With dead ends: 844 [2023-12-24 23:43:57,106 INFO L226 Difference]: Without dead ends: 568 [2023-12-24 23:43:57,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1091 GetRequests, 1062 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=331, Invalid=599, Unknown=0, NotChecked=0, Total=930 [2023-12-24 23:43:57,108 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 75 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 23:43:57,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 12 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 23:43:57,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-12-24 23:43:57,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 567. [2023-12-24 23:43:57,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 1.0159010600706713) internal successors, (575), 566 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:43:57,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 575 transitions. [2023-12-24 23:43:57,147 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 575 transitions. Word has length 542 [2023-12-24 23:43:57,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:43:57,148 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 575 transitions. [2023-12-24 23:43:57,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:43:57,148 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 575 transitions. [2023-12-24 23:43:57,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2023-12-24 23:43:57,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:43:57,154 INFO L195 NwaCegarLoop]: trace histogram [187, 187, 174, 13, 1, 1, 1, 1, 1] [2023-12-24 23:43:57,156 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 [2023-12-24 23:43:57,356 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 [2023-12-24 23:43:57,357 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:43:57,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:43:57,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1210660614, now seen corresponding path program 7 times [2023-12-24 23:43:57,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:43:57,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829952259] [2023-12-24 23:43:57,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:43:57,358 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 [2023-12-24 23:43:57,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:43:57,359 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) [2023-12-24 23:43:57,359 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 [2023-12-24 23:43:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:43:57,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 176 conjunts are in the unsatisfiable core [2023-12-24 23:43:57,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:44:07,491 INFO L134 CoverageAnalysis]: Checked inductivity of 52360 backedges. 6637 proven. 45501 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-12-24 23:44:07,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:44:43,041 INFO L134 CoverageAnalysis]: Checked inductivity of 52360 backedges. 6637 proven. 45501 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-12-24 23:44:43,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:44:43,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829952259] [2023-12-24 23:44:43,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829952259] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:44:43,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:44:43,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [176, 176] total 351 [2023-12-24 23:44:43,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985749773] [2023-12-24 23:44:43,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:44:43,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 352 states [2023-12-24 23:44:43,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:44:43,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 352 interpolants. [2023-12-24 23:44:43,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31326, Invalid=92226, Unknown=0, NotChecked=0, Total=123552 [2023-12-24 23:44:43,051 INFO L87 Difference]: Start difference. First operand 567 states and 575 transitions. Second operand has 352 states, 352 states have (on average 3.002840909090909) internal successors, (1057), 351 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-24 23:55:38,656 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 [2023-12-24 23:55:38,656 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 (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 23:55:38,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 333 states. [2023-12-24 23:55:38,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1287 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 506 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12246 ImplicationChecksByTransitivity, 670.6s TimeCoverageRelationStatistics Valid=86238, Invalid=171318, Unknown=0, NotChecked=0, Total=257556 [2023-12-24 23:55:38,700 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 157 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 92517 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 92518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2023-12-24 23:55:38,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 0 Invalid, 92518 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 92517 Invalid, 0 Unknown, 0 Unchecked, 22.8s Time] [2023-12-24 23:55:38,702 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 23:55:38,712 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 (13)] Forceful destruction successful, exit code 0 [2023-12-24 23:55:38,902 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 [2023-12-24 23:55:38,902 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (567states) and FLOYD_HOARE automaton (currently 333 states, 352 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-19-1 term,while SimplifyDDA2 was simplifying 19 xjuncts wrt. a ATOM-1 context. [2023-12-24 23:55:38,906 INFO L445 BasicCegarLoop]: Path program histogram: [7, 3, 1, 1] [2023-12-24 23:55:38,908 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 23:55:38,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 11:55:38 BoogieIcfgContainer [2023-12-24 23:55:38,909 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 23:55:38,909 INFO L158 Benchmark]: Toolchain (without parser) took 856427.03ms. Allocated memory was 271.6MB in the beginning and 565.2MB in the end (delta: 293.6MB). Free memory was 231.9MB in the beginning and 370.4MB in the end (delta: -138.5MB). Peak memory consumption was 394.7MB. Max. memory is 8.0GB. [2023-12-24 23:55:38,909 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 217.1MB. Free memory is still 166.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 23:55:38,910 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.95ms. Allocated memory is still 271.6MB. Free memory was 231.9MB in the beginning and 221.0MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-24 23:55:38,910 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.05ms. Allocated memory is still 271.6MB. Free memory was 221.0MB in the beginning and 219.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-24 23:55:38,910 INFO L158 Benchmark]: Boogie Preprocessor took 29.43ms. Allocated memory is still 271.6MB. Free memory was 219.4MB in the beginning and 217.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 23:55:38,910 INFO L158 Benchmark]: RCFGBuilder took 227.33ms. Allocated memory is still 271.6MB. Free memory was 217.6MB in the beginning and 207.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-24 23:55:38,910 INFO L158 Benchmark]: TraceAbstraction took 855967.31ms. Allocated memory was 271.6MB in the beginning and 565.2MB in the end (delta: 293.6MB). Free memory was 206.4MB in the beginning and 370.4MB in the end (delta: -164.0MB). Peak memory consumption was 368.5MB. Max. memory is 8.0GB. [2023-12-24 23:55:38,911 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 217.1MB. Free memory is still 166.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 178.95ms. Allocated memory is still 271.6MB. Free memory was 231.9MB in the beginning and 221.0MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.05ms. Allocated memory is still 271.6MB. Free memory was 221.0MB in the beginning and 219.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.43ms. Allocated memory is still 271.6MB. Free memory was 219.4MB in the beginning and 217.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 227.33ms. Allocated memory is still 271.6MB. Free memory was 217.6MB in the beginning and 207.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 855967.31ms. Allocated memory was 271.6MB in the beginning and 565.2MB in the end (delta: 293.6MB). Free memory was 206.4MB in the beginning and 370.4MB in the end (delta: -164.0MB). Peak memory consumption was 368.5MB. 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: 4]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 4). Cancelled while NwaCegarLoop was constructing difference of abstraction (567states) and FLOYD_HOARE automaton (currently 333 states, 352 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-19-1 term,while SimplifyDDA2 was simplifying 19 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 855.9s, OverallIterations: 12, TraceHistogramMax: 187, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 780.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 904 SdHoareTripleChecker+Valid, 31.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 904 mSDsluCounter, 485 SdHoareTripleChecker+Invalid, 25.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 435 mSDsCounter, 232 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 123772 IncrementalHoareTripleChecker+Invalid, 124004 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 232 mSolverCounterUnsat, 50 mSDtfsCounter, 123772 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3948 GetRequests, 2890 SyntacticMatches, 0 SemanticMatches, 1057 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17495 ImplicationChecksByTransitivity, 803.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=567occurred in iteration=11, InterpolantAutomatonStates: 393, 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, 11 MinimizatonAttempts, 25 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 72.0s InterpolantComputationTime, 1839 NumberOfCodeBlocks, 1209 NumberOfCodeBlocksAsserted, 127 NumberOfCheckSat, 3612 ConstructedInterpolants, 646 QuantifiedInterpolants, 27756 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1451 ConjunctsInSsa, 435 ConjunctsInUnsatCore, 21 InterpolantComputations, 3 PerfectInterpolantSequences, 115911/239283 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