/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/eca-rers2012/Problem12_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 10:14:33,647 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 10:14:33,708 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 10:14:33,711 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 10:14:33,711 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 10:14:33,746 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 10:14:33,747 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 10:14:33,747 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 10:14:33,748 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 10:14:33,750 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 10:14:33,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 10:14:33,751 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 10:14:33,751 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 10:14:33,752 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 10:14:33,752 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 10:14:33,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 10:14:33,753 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 10:14:33,753 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 10:14:33,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 10:14:33,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 10:14:33,753 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 10:14:33,754 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 10:14:33,754 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 10:14:33,755 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 10:14:33,755 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 10:14:33,755 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 10:14:33,755 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 10:14:33,755 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 10:14:33,755 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 10:14:33,755 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 10:14:33,756 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 10:14:33,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 10:14:33,756 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 10:14:33,756 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 10:14:33,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 10:14:33,757 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 10:14:33,757 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 10:14:33,757 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 10:14:33,757 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 10:14:33,757 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 10:14:33,757 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 10:14:33,757 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 10:14:33,757 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 10:14:33,757 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 10:14:33,758 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 10:14:33,758 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 10:14:33,758 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 10:14:33,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 10:14:33,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 10:14:33,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 10:14:33,962 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 10:14:33,963 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 10:14:33,964 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label17.c [2023-12-22 10:14:34,884 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 10:14:35,178 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 10:14:35,178 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label17.c [2023-12-22 10:14:35,204 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31662942b/449a2c20030d49bf927df3ab97f9e896/FLAG69c706bba [2023-12-22 10:14:35,218 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31662942b/449a2c20030d49bf927df3ab97f9e896 [2023-12-22 10:14:35,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 10:14:35,221 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 10:14:35,223 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 10:14:35,223 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 10:14:35,226 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 10:14:35,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:14:35" (1/1) ... [2023-12-22 10:14:35,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b9b21ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:35, skipping insertion in model container [2023-12-22 10:14:35,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:14:35" (1/1) ... [2023-12-22 10:14:35,380 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 10:14:35,565 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label17.c[5134,5147] [2023-12-22 10:14:36,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 10:14:36,127 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 10:14:36,148 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label17.c[5134,5147] [2023-12-22 10:14:36,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 10:14:36,488 INFO L206 MainTranslator]: Completed translation [2023-12-22 10:14:36,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:36 WrapperNode [2023-12-22 10:14:36,488 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 10:14:36,490 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 10:14:36,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 10:14:36,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 10:14:36,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:36" (1/1) ... [2023-12-22 10:14:36,539 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:36" (1/1) ... [2023-12-22 10:14:36,642 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4756 [2023-12-22 10:14:36,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 10:14:36,643 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 10:14:36,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 10:14:36,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 10:14:36,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:36" (1/1) ... [2023-12-22 10:14:36,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:36" (1/1) ... [2023-12-22 10:14:36,685 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:36" (1/1) ... [2023-12-22 10:14:36,738 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]. [2023-12-22 10:14:36,738 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:36" (1/1) ... [2023-12-22 10:14:36,739 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:36" (1/1) ... [2023-12-22 10:14:36,797 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:36" (1/1) ... [2023-12-22 10:14:36,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:36" (1/1) ... [2023-12-22 10:14:36,838 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:36" (1/1) ... [2023-12-22 10:14:36,850 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:36" (1/1) ... [2023-12-22 10:14:36,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 10:14:36,870 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 10:14:36,870 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 10:14:36,870 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 10:14:36,870 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:36" (1/1) ... [2023-12-22 10:14:36,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 10:14:36,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 10:14:36,894 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) [2023-12-22 10:14:36,898 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 [2023-12-22 10:14:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 10:14:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 10:14:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 10:14:36,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 10:14:36,970 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 10:14:36,971 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 10:15:01,953 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 10:15:02,041 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 10:15:02,041 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 10:15:02,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:15:02 BoogieIcfgContainer [2023-12-22 10:15:02,041 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 10:15:02,043 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 10:15:02,043 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 10:15:02,045 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 10:15:02,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:14:35" (1/3) ... [2023-12-22 10:15:02,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373735ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:15:02, skipping insertion in model container [2023-12-22 10:15:02,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:36" (2/3) ... [2023-12-22 10:15:02,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373735ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:15:02, skipping insertion in model container [2023-12-22 10:15:02,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:15:02" (3/3) ... [2023-12-22 10:15:02,047 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label17.c [2023-12-22 10:15:02,058 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 10:15:02,059 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 10:15:02,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 10:15:02,105 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;@2d19855d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 10:15:02,105 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 10:15:02,110 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 10:15:02,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-22 10:15:02,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:15:02,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:15:02,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:15:02,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:15:02,119 INFO L85 PathProgramCache]: Analyzing trace with hash -286904278, now seen corresponding path program 1 times [2023-12-22 10:15:02,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:15:02,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767568792] [2023-12-22 10:15:02,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:15:02,131 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 [2023-12-22 10:15:02,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:15:02,133 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) [2023-12-22 10:15:02,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-22 10:15:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:15:02,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 10:15:02,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:15:02,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:15:02,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:15:02,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:15:02,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767568792] [2023-12-22 10:15:02,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767568792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:15:02,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:15:02,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 10:15:02,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954641182] [2023-12-22 10:15:02,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:15:02,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 10:15:02,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:15:02,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 10:15:02,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 10:15:02,233 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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) [2023-12-22 10:15:02,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:15:02,300 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2023-12-22 10:15:02,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 10:15:02,302 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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 39 [2023-12-22 10:15:02,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:15:02,314 INFO L225 Difference]: With dead ends: 1511 [2023-12-22 10:15:02,314 INFO L226 Difference]: Without dead ends: 754 [2023-12-22 10:15:02,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 10:15:02,320 INFO L413 NwaCegarLoop]: 1438 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 10:15:02,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 10:15:02,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-12-22 10:15:02,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-12-22 10:15:02,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 10:15:02,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2023-12-22 10:15:02,383 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 39 [2023-12-22 10:15:02,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:15:02,383 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2023-12-22 10:15:02,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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) [2023-12-22 10:15:02,383 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2023-12-22 10:15:02,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-22 10:15:02,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:15:02,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:15:02,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-22 10:15:02,584 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 [2023-12-22 10:15:02,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:15:02,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:15:02,585 INFO L85 PathProgramCache]: Analyzing trace with hash 2141793457, now seen corresponding path program 1 times [2023-12-22 10:15:02,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:15:02,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790204156] [2023-12-22 10:15:02,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:15:02,586 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 [2023-12-22 10:15:02,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:15:02,591 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) [2023-12-22 10:15:02,616 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 [2023-12-22 10:15:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:15:02,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:15:02,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:15:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:15:02,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:15:02,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:15:02,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790204156] [2023-12-22 10:15:02,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790204156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:15:02,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:15:02,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 10:15:02,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216706075] [2023-12-22 10:15:02,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:15:02,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:15:02,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:15:02,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:15:02,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:15:02,721 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 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) [2023-12-22 10:15:38,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:15:38,083 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2023-12-22 10:15:38,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:15:38,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 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 39 [2023-12-22 10:15:38,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:15:38,093 INFO L225 Difference]: With dead ends: 2258 [2023-12-22 10:15:38,093 INFO L226 Difference]: Without dead ends: 1505 [2023-12-22 10:15:38,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:15:38,098 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 778 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time [2023-12-22 10:15:38,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 426 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 35.2s Time] [2023-12-22 10:15:38,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2023-12-22 10:15:38,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2023-12-22 10:15:38,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.6389627659574468) internal successors, (2465), 1504 states have internal predecessors, (2465), 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) [2023-12-22 10:15:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2465 transitions. [2023-12-22 10:15:38,151 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2465 transitions. Word has length 39 [2023-12-22 10:15:38,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:15:38,152 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 2465 transitions. [2023-12-22 10:15:38,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 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) [2023-12-22 10:15:38,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2465 transitions. [2023-12-22 10:15:38,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-22 10:15:38,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:15:38,156 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:15:38,159 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 (3)] Ended with exit code 0 [2023-12-22 10:15:38,357 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 [2023-12-22 10:15:38,358 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:15:38,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:15:38,358 INFO L85 PathProgramCache]: Analyzing trace with hash -348016734, now seen corresponding path program 1 times [2023-12-22 10:15:38,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:15:38,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449374631] [2023-12-22 10:15:38,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:15:38,359 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 [2023-12-22 10:15:38,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:15:38,361 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) [2023-12-22 10:15:38,368 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 [2023-12-22 10:15:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:15:38,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 10:15:38,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:15:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 33 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:15:39,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 10:15:39,819 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 33 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:15:39,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:15:39,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449374631] [2023-12-22 10:15:39,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449374631] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 10:15:39,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 10:15:39,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 10:15:39,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978240109] [2023-12-22 10:15:39,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 10:15:39,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 10:15:39,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:15:39,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 10:15:39,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-22 10:15:39,822 INFO L87 Difference]: Start difference. First operand 1505 states and 2465 transitions. Second operand has 7 states, 7 states have (on average 30.714285714285715) internal successors, (215), 6 states have internal predecessors, (215), 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) [2023-12-22 10:17:14,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:17:14,797 INFO L93 Difference]: Finished difference Result 8339 states and 13827 transitions. [2023-12-22 10:17:14,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 10:17:14,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.714285714285715) internal successors, (215), 6 states have internal predecessors, (215), 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 110 [2023-12-22 10:17:14,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:17:14,816 INFO L225 Difference]: With dead ends: 8339 [2023-12-22 10:17:14,816 INFO L226 Difference]: Without dead ends: 6835 [2023-12-22 10:17:14,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-22 10:17:14,819 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 6412 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7384 mSolverCounterSat, 3174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6412 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 10558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3174 IncrementalHoareTripleChecker+Valid, 7384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.4s IncrementalHoareTripleChecker+Time [2023-12-22 10:17:14,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6412 Valid, 297 Invalid, 10558 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3174 Valid, 7384 Invalid, 0 Unknown, 0 Unchecked, 94.4s Time] [2023-12-22 10:17:14,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6835 states. [2023-12-22 10:17:14,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6835 to 5260. [2023-12-22 10:17:14,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 5259 states have (on average 1.364137668758319) internal successors, (7174), 5259 states have internal predecessors, (7174), 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) [2023-12-22 10:17:14,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 7174 transitions. [2023-12-22 10:17:14,898 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 7174 transitions. Word has length 110 [2023-12-22 10:17:14,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:17:14,899 INFO L495 AbstractCegarLoop]: Abstraction has 5260 states and 7174 transitions. [2023-12-22 10:17:14,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.714285714285715) internal successors, (215), 6 states have internal predecessors, (215), 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) [2023-12-22 10:17:14,899 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 7174 transitions. [2023-12-22 10:17:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-12-22 10:17:14,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:17:14,903 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:17:14,905 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 (4)] Ended with exit code 0 [2023-12-22 10:17:15,105 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 [2023-12-22 10:17:15,105 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:17:15,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:17:15,106 INFO L85 PathProgramCache]: Analyzing trace with hash -689979791, now seen corresponding path program 1 times [2023-12-22 10:17:15,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:17:15,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196173704] [2023-12-22 10:17:15,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:17:15,107 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 [2023-12-22 10:17:15,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:17:15,108 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) [2023-12-22 10:17:15,109 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 [2023-12-22 10:17:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:17:15,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:17:15,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:17:15,401 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-22 10:17:15,401 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:17:15,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:17:15,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196173704] [2023-12-22 10:17:15,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196173704] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:17:15,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:17:15,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 10:17:15,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926035390] [2023-12-22 10:17:15,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:17:15,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:17:15,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:17:15,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:17:15,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:17:15,403 INFO L87 Difference]: Start difference. First operand 5260 states and 7174 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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) [2023-12-22 10:17:50,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:17:50,839 INFO L93 Difference]: Finished difference Result 13523 states and 18461 transitions. [2023-12-22 10:17:50,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:17:50,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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 215 [2023-12-22 10:17:50,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:17:50,864 INFO L225 Difference]: With dead ends: 13523 [2023-12-22 10:17:50,864 INFO L226 Difference]: Without dead ends: 8264 [2023-12-22 10:17:50,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:17:50,873 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 664 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2244 mSolverCounterSat, 657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 2901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 657 IncrementalHoareTripleChecker+Valid, 2244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time [2023-12-22 10:17:50,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 618 Invalid, 2901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [657 Valid, 2244 Invalid, 0 Unknown, 0 Unchecked, 35.2s Time] [2023-12-22 10:17:50,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8264 states. [2023-12-22 10:17:50,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8264 to 7513. [2023-12-22 10:17:50,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7513 states, 7512 states have (on average 1.281283280085197) internal successors, (9625), 7512 states have internal predecessors, (9625), 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) [2023-12-22 10:17:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7513 states to 7513 states and 9625 transitions. [2023-12-22 10:17:50,978 INFO L78 Accepts]: Start accepts. Automaton has 7513 states and 9625 transitions. Word has length 215 [2023-12-22 10:17:50,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:17:50,979 INFO L495 AbstractCegarLoop]: Abstraction has 7513 states and 9625 transitions. [2023-12-22 10:17:50,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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) [2023-12-22 10:17:50,979 INFO L276 IsEmpty]: Start isEmpty. Operand 7513 states and 9625 transitions. [2023-12-22 10:17:50,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-22 10:17:50,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:17:50,982 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:17:50,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-22 10:17:51,189 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 [2023-12-22 10:17:51,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:17:51,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:17:51,191 INFO L85 PathProgramCache]: Analyzing trace with hash -2028751685, now seen corresponding path program 1 times [2023-12-22 10:17:51,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:17:51,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113048203] [2023-12-22 10:17:51,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:17:51,192 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 [2023-12-22 10:17:51,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:17:51,193 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) [2023-12-22 10:17:51,220 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 [2023-12-22 10:17:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:17:51,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:17:51,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:17:51,424 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:17:51,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:17:51,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:17:51,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113048203] [2023-12-22 10:17:51,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113048203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:17:51,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:17:51,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:17:51,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450569179] [2023-12-22 10:17:51,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:17:51,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:17:51,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:17:51,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:17:51,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:17:51,426 INFO L87 Difference]: Start difference. First operand 7513 states and 9625 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2023-12-22 10:18:34,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:18:34,746 INFO L93 Difference]: Finished difference Result 19531 states and 25129 transitions. [2023-12-22 10:18:34,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:18:34,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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 252 [2023-12-22 10:18:34,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:18:34,783 INFO L225 Difference]: With dead ends: 19531 [2023-12-22 10:18:34,783 INFO L226 Difference]: Without dead ends: 12019 [2023-12-22 10:18:34,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:18:34,794 INFO L413 NwaCegarLoop]: 1407 mSDtfsCounter, 680 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2828 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 3204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 2828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.1s IncrementalHoareTripleChecker+Time [2023-12-22 10:18:34,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1414 Invalid, 3204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 2828 Invalid, 0 Unknown, 0 Unchecked, 43.1s Time] [2023-12-22 10:18:34,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12019 states. [2023-12-22 10:18:34,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12019 to 12019. [2023-12-22 10:18:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12019 states, 12018 states have (on average 1.2537027791645865) internal successors, (15067), 12018 states have internal predecessors, (15067), 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) [2023-12-22 10:18:34,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12019 states to 12019 states and 15067 transitions. [2023-12-22 10:18:34,940 INFO L78 Accepts]: Start accepts. Automaton has 12019 states and 15067 transitions. Word has length 252 [2023-12-22 10:18:34,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:18:34,941 INFO L495 AbstractCegarLoop]: Abstraction has 12019 states and 15067 transitions. [2023-12-22 10:18:34,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2023-12-22 10:18:34,941 INFO L276 IsEmpty]: Start isEmpty. Operand 12019 states and 15067 transitions. [2023-12-22 10:18:34,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-12-22 10:18:34,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:18:34,944 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:18:34,952 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 [2023-12-22 10:18:35,148 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 [2023-12-22 10:18:35,148 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:18:35,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:18:35,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1240718221, now seen corresponding path program 1 times [2023-12-22 10:18:35,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:18:35,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424341095] [2023-12-22 10:18:35,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:18:35,150 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 [2023-12-22 10:18:35,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:18:35,151 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) [2023-12-22 10:18:35,155 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 [2023-12-22 10:18:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:18:35,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 10:18:35,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:18:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-22 10:18:35,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:18:35,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:18:35,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424341095] [2023-12-22 10:18:35,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424341095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:18:35,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:18:35,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 10:18:35,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126940344] [2023-12-22 10:18:35,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:18:35,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:18:35,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:18:35,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:18:35,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:18:35,797 INFO L87 Difference]: Start difference. First operand 12019 states and 15067 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 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) [2023-12-22 10:19:02,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:19:02,060 INFO L93 Difference]: Finished difference Result 27041 states and 33569 transitions. [2023-12-22 10:19:02,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:19:02,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 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 255 [2023-12-22 10:19:02,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:19:02,083 INFO L225 Difference]: With dead ends: 27041 [2023-12-22 10:19:02,083 INFO L226 Difference]: Without dead ends: 15023 [2023-12-22 10:19:02,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:19:02,097 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 611 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 2499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2023-12-22 10:19:02,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 574 Invalid, 2499 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [181 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 26.0s Time] [2023-12-22 10:19:02,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15023 states. [2023-12-22 10:19:02,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15023 to 15023. [2023-12-22 10:19:02,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15023 states, 15022 states have (on average 1.219344960724271) internal successors, (18317), 15022 states have internal predecessors, (18317), 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) [2023-12-22 10:19:02,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15023 states to 15023 states and 18317 transitions. [2023-12-22 10:19:02,269 INFO L78 Accepts]: Start accepts. Automaton has 15023 states and 18317 transitions. Word has length 255 [2023-12-22 10:19:02,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:19:02,269 INFO L495 AbstractCegarLoop]: Abstraction has 15023 states and 18317 transitions. [2023-12-22 10:19:02,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 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) [2023-12-22 10:19:02,271 INFO L276 IsEmpty]: Start isEmpty. Operand 15023 states and 18317 transitions. [2023-12-22 10:19:02,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-22 10:19:02,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:19:02,273 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:19:02,279 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 [2023-12-22 10:19:02,479 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 [2023-12-22 10:19:02,480 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:19:02,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:19:02,481 INFO L85 PathProgramCache]: Analyzing trace with hash -761149135, now seen corresponding path program 1 times [2023-12-22 10:19:02,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:19:02,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700338141] [2023-12-22 10:19:02,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:19:02,482 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 [2023-12-22 10:19:02,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:19:02,483 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) [2023-12-22 10:19:02,500 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 [2023-12-22 10:19:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:19:02,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:19:02,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:19:02,687 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:19:02,688 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:19:02,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:19:02,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700338141] [2023-12-22 10:19:02,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700338141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:19:02,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:19:02,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:19:02,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144412293] [2023-12-22 10:19:02,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:19:02,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:19:02,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:19:02,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:19:02,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:19:02,689 INFO L87 Difference]: Start difference. First operand 15023 states and 18317 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2023-12-22 10:19:42,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:19:42,727 INFO L93 Difference]: Finished difference Result 32298 states and 39870 transitions. [2023-12-22 10:19:42,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:19:42,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 256 [2023-12-22 10:19:42,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:19:42,752 INFO L225 Difference]: With dead ends: 32298 [2023-12-22 10:19:42,752 INFO L226 Difference]: Without dead ends: 18027 [2023-12-22 10:19:42,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:19:42,766 INFO L413 NwaCegarLoop]: 1333 mSDtfsCounter, 711 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 3076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.8s IncrementalHoareTripleChecker+Time [2023-12-22 10:19:42,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1339 Invalid, 3076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 39.8s Time] [2023-12-22 10:19:42,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18027 states. [2023-12-22 10:19:42,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18027 to 17276. [2023-12-22 10:19:42,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17276 states, 17275 states have (on average 1.208451519536903) internal successors, (20876), 17275 states have internal predecessors, (20876), 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) [2023-12-22 10:19:42,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17276 states to 17276 states and 20876 transitions. [2023-12-22 10:19:42,946 INFO L78 Accepts]: Start accepts. Automaton has 17276 states and 20876 transitions. Word has length 256 [2023-12-22 10:19:42,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:19:42,946 INFO L495 AbstractCegarLoop]: Abstraction has 17276 states and 20876 transitions. [2023-12-22 10:19:42,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2023-12-22 10:19:42,946 INFO L276 IsEmpty]: Start isEmpty. Operand 17276 states and 20876 transitions. [2023-12-22 10:19:42,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-22 10:19:42,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:19:42,949 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:19:42,955 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 [2023-12-22 10:19:43,152 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 [2023-12-22 10:19:43,153 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:19:43,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:19:43,153 INFO L85 PathProgramCache]: Analyzing trace with hash 673381009, now seen corresponding path program 1 times [2023-12-22 10:19:43,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:19:43,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117684809] [2023-12-22 10:19:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:19:43,154 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 [2023-12-22 10:19:43,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:19:43,155 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) [2023-12-22 10:19:43,156 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 [2023-12-22 10:19:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:19:43,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 10:19:43,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:19:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-22 10:19:43,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:19:43,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:19:43,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117684809] [2023-12-22 10:19:43,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117684809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:19:43,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:19:43,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:19:43,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781078753] [2023-12-22 10:19:43,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:19:43,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 10:19:43,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:19:43,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 10:19:43,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 10:19:43,991 INFO L87 Difference]: Start difference. First operand 17276 states and 20876 transitions. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 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) [2023-12-22 10:20:11,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:20:11,629 INFO L93 Difference]: Finished difference Result 33834 states and 41028 transitions. [2023-12-22 10:20:11,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 10:20:11,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 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 280 [2023-12-22 10:20:11,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:20:11,656 INFO L225 Difference]: With dead ends: 33834 [2023-12-22 10:20:11,656 INFO L226 Difference]: Without dead ends: 17276 [2023-12-22 10:20:11,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 10:20:11,671 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 682 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3643 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 3643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.4s IncrementalHoareTripleChecker+Time [2023-12-22 10:20:11,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 707 Invalid, 3643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3643 Invalid, 0 Unknown, 0 Unchecked, 27.4s Time] [2023-12-22 10:20:11,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17276 states. [2023-12-22 10:20:11,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17276 to 17276. [2023-12-22 10:20:11,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17276 states, 17275 states have (on average 1.2083936324167872) internal successors, (20875), 17275 states have internal predecessors, (20875), 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) [2023-12-22 10:20:11,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17276 states to 17276 states and 20875 transitions. [2023-12-22 10:20:11,829 INFO L78 Accepts]: Start accepts. Automaton has 17276 states and 20875 transitions. Word has length 280 [2023-12-22 10:20:11,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:20:11,830 INFO L495 AbstractCegarLoop]: Abstraction has 17276 states and 20875 transitions. [2023-12-22 10:20:11,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 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) [2023-12-22 10:20:11,830 INFO L276 IsEmpty]: Start isEmpty. Operand 17276 states and 20875 transitions. [2023-12-22 10:20:11,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-12-22 10:20:11,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:20:11,834 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:20:11,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-22 10:20:12,040 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 [2023-12-22 10:20:12,040 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:20:12,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:20:12,041 INFO L85 PathProgramCache]: Analyzing trace with hash -637396768, now seen corresponding path program 1 times [2023-12-22 10:20:12,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:20:12,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47907629] [2023-12-22 10:20:12,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:20:12,042 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 [2023-12-22 10:20:12,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:20:12,043 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) [2023-12-22 10:20:12,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-22 10:20:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:20:12,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 10:20:12,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:20:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 113 proven. 161 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-22 10:20:12,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 10:20:13,055 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-22 10:20:13,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:20:13,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47907629] [2023-12-22 10:20:13,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47907629] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 10:20:13,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 10:20:13,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 10:20:13,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744377482] [2023-12-22 10:20:13,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:20:13,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:20:13,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:20:13,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:20:13,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:20:13,057 INFO L87 Difference]: Start difference. First operand 17276 states and 20875 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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) [2023-12-22 10:20:46,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 10:20:50,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 10:21:31,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:21:31,008 INFO L93 Difference]: Finished difference Result 43563 states and 53883 transitions. [2023-12-22 10:21:31,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:21:31,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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 347 [2023-12-22 10:21:31,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:21:31,033 INFO L225 Difference]: With dead ends: 43563 [2023-12-22 10:21:31,033 INFO L226 Difference]: Without dead ends: 27039 [2023-12-22 10:21:31,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 689 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:21:31,043 INFO L413 NwaCegarLoop]: 1350 mSDtfsCounter, 691 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.7s IncrementalHoareTripleChecker+Time [2023-12-22 10:21:31,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 1356 Invalid, 3059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 77.7s Time] [2023-12-22 10:21:31,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27039 states. [2023-12-22 10:21:31,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27039 to 27039. [2023-12-22 10:21:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27039 states, 27038 states have (on average 1.2028626377690657) internal successors, (32523), 27038 states have internal predecessors, (32523), 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) [2023-12-22 10:21:31,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27039 states to 27039 states and 32523 transitions. [2023-12-22 10:21:31,264 INFO L78 Accepts]: Start accepts. Automaton has 27039 states and 32523 transitions. Word has length 347 [2023-12-22 10:21:31,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:21:31,265 INFO L495 AbstractCegarLoop]: Abstraction has 27039 states and 32523 transitions. [2023-12-22 10:21:31,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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) [2023-12-22 10:21:31,265 INFO L276 IsEmpty]: Start isEmpty. Operand 27039 states and 32523 transitions. [2023-12-22 10:21:31,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-22 10:21:31,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:21:31,270 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:21:31,273 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 [2023-12-22 10:21:31,473 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 [2023-12-22 10:21:31,473 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:21:31,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:21:31,474 INFO L85 PathProgramCache]: Analyzing trace with hash -49413566, now seen corresponding path program 1 times [2023-12-22 10:21:31,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:21:31,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395973927] [2023-12-22 10:21:31,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:21:31,475 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 [2023-12-22 10:21:31,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:21:31,476 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) [2023-12-22 10:21:31,482 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 [2023-12-22 10:21:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:21:31,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 10:21:31,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:21:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 245 proven. 80 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-22 10:21:32,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 10:21:33,451 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-22 10:21:33,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:21:33,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395973927] [2023-12-22 10:21:33,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395973927] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 10:21:33,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 10:21:33,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 10:21:33,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630053684] [2023-12-22 10:21:33,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:21:33,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:21:33,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:21:33,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:21:33,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:21:33,453 INFO L87 Difference]: Start difference. First operand 27039 states and 32523 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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) [2023-12-22 10:21:54,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 10:23:02,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:23:02,957 INFO L93 Difference]: Finished difference Result 66844 states and 81480 transitions. [2023-12-22 10:23:02,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:23:02,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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 351 [2023-12-22 10:23:02,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:23:03,006 INFO L225 Difference]: With dead ends: 66844 [2023-12-22 10:23:03,006 INFO L226 Difference]: Without dead ends: 40557 [2023-12-22 10:23:03,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 697 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:23:03,026 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 713 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 873 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 3190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 873 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.2s IncrementalHoareTripleChecker+Time [2023-12-22 10:23:03,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 157 Invalid, 3190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [873 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 89.2s Time] [2023-12-22 10:23:03,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40557 states. [2023-12-22 10:23:03,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40557 to 40557. [2023-12-22 10:23:03,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40557 states, 40556 states have (on average 1.1990334352500247) internal successors, (48628), 40556 states have internal predecessors, (48628), 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) [2023-12-22 10:23:03,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40557 states to 40557 states and 48628 transitions. [2023-12-22 10:23:03,420 INFO L78 Accepts]: Start accepts. Automaton has 40557 states and 48628 transitions. Word has length 351 [2023-12-22 10:23:03,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:23:03,420 INFO L495 AbstractCegarLoop]: Abstraction has 40557 states and 48628 transitions. [2023-12-22 10:23:03,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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) [2023-12-22 10:23:03,420 INFO L276 IsEmpty]: Start isEmpty. Operand 40557 states and 48628 transitions. [2023-12-22 10:23:03,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2023-12-22 10:23:03,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:23:03,424 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:23:03,432 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 [2023-12-22 10:23:03,629 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 [2023-12-22 10:23:03,629 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:23:03,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:23:03,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1767368180, now seen corresponding path program 1 times [2023-12-22 10:23:03,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:23:03,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544461920] [2023-12-22 10:23:03,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:23:03,631 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 [2023-12-22 10:23:03,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:23:03,632 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) [2023-12-22 10:23:03,633 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 [2023-12-22 10:23:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:23:03,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 10:23:03,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:23:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-22 10:23:04,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:23:04,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:23:04,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544461920] [2023-12-22 10:23:04,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544461920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:23:04,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:23:04,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:23:04,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776448853] [2023-12-22 10:23:04,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:23:04,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 10:23:04,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:23:04,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 10:23:04,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 10:23:04,373 INFO L87 Difference]: Start difference. First operand 40557 states and 48628 transitions. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 3 states have internal predecessors, (318), 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) [2023-12-22 10:23:43,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:23:43,573 INFO L93 Difference]: Finished difference Result 80362 states and 96499 transitions. [2023-12-22 10:23:43,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 10:23:43,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 3 states have internal predecessors, (318), 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 355 [2023-12-22 10:23:43,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:23:43,620 INFO L225 Difference]: With dead ends: 80362 [2023-12-22 10:23:43,620 INFO L226 Difference]: Without dead ends: 40557 [2023-12-22 10:23:43,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 10:23:43,637 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 1310 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4914 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 5117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 4914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.8s IncrementalHoareTripleChecker+Time [2023-12-22 10:23:43,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1310 Valid, 568 Invalid, 5117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 4914 Invalid, 0 Unknown, 0 Unchecked, 38.8s Time] [2023-12-22 10:23:43,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40557 states. [2023-12-22 10:23:43,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40557 to 39806. [2023-12-22 10:23:43,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39806 states, 39805 states have (on average 1.2005275719130764) internal successors, (47787), 39805 states have internal predecessors, (47787), 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) [2023-12-22 10:23:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39806 states to 39806 states and 47787 transitions. [2023-12-22 10:23:43,987 INFO L78 Accepts]: Start accepts. Automaton has 39806 states and 47787 transitions. Word has length 355 [2023-12-22 10:23:43,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:23:43,987 INFO L495 AbstractCegarLoop]: Abstraction has 39806 states and 47787 transitions. [2023-12-22 10:23:43,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 3 states have internal predecessors, (318), 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) [2023-12-22 10:23:43,988 INFO L276 IsEmpty]: Start isEmpty. Operand 39806 states and 47787 transitions. [2023-12-22 10:23:43,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-12-22 10:23:43,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:23:43,992 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:23:43,997 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 [2023-12-22 10:23:44,196 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 [2023-12-22 10:23:44,197 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:23:44,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:23:44,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1780246593, now seen corresponding path program 1 times [2023-12-22 10:23:44,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:23:44,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468938565] [2023-12-22 10:23:44,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:23:44,199 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 [2023-12-22 10:23:44,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:23:44,200 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) [2023-12-22 10:23:44,201 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 [2023-12-22 10:23:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:23:44,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 10:23:44,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:23:44,733 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 254 proven. 110 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-22 10:23:44,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 10:23:44,990 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-22 10:23:44,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:23:44,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468938565] [2023-12-22 10:23:44,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468938565] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 10:23:44,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 10:23:44,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 10:23:44,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105896198] [2023-12-22 10:23:44,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:23:44,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:23:44,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:23:44,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:23:44,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:23:44,991 INFO L87 Difference]: Start difference. First operand 39806 states and 47787 transitions. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2023-12-22 10:24:24,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:24:24,968 INFO L93 Difference]: Finished difference Result 84117 states and 101281 transitions. [2023-12-22 10:24:24,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:24:24,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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 385 [2023-12-22 10:24:24,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:24:25,021 INFO L225 Difference]: With dead ends: 84117 [2023-12-22 10:24:25,022 INFO L226 Difference]: Without dead ends: 45063 [2023-12-22 10:24:25,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 765 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:24:25,038 INFO L413 NwaCegarLoop]: 1401 mSDtfsCounter, 651 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2448 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 2721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 2448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.6s IncrementalHoareTripleChecker+Time [2023-12-22 10:24:25,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 1408 Invalid, 2721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 2448 Invalid, 0 Unknown, 0 Unchecked, 39.6s Time] [2023-12-22 10:24:25,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45063 states. [2023-12-22 10:24:25,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45063 to 43561. [2023-12-22 10:24:25,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43561 states, 43560 states have (on average 1.1866850321395777) internal successors, (51692), 43560 states have internal predecessors, (51692), 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) [2023-12-22 10:24:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43561 states to 43561 states and 51692 transitions. [2023-12-22 10:24:25,431 INFO L78 Accepts]: Start accepts. Automaton has 43561 states and 51692 transitions. Word has length 385 [2023-12-22 10:24:25,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:24:25,431 INFO L495 AbstractCegarLoop]: Abstraction has 43561 states and 51692 transitions. [2023-12-22 10:24:25,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2023-12-22 10:24:25,431 INFO L276 IsEmpty]: Start isEmpty. Operand 43561 states and 51692 transitions. [2023-12-22 10:24:25,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-12-22 10:24:25,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:24:25,436 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:24:25,442 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 [2023-12-22 10:24:25,638 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 [2023-12-22 10:24:25,638 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:24:25,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:24:25,639 INFO L85 PathProgramCache]: Analyzing trace with hash -272526885, now seen corresponding path program 1 times [2023-12-22 10:24:25,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:24:25,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71034343] [2023-12-22 10:24:25,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:24:25,640 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 [2023-12-22 10:24:25,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:24:25,641 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 10:24:25,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-22 10:24:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:24:25,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:24:25,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:24:25,915 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-22 10:24:25,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:24:25,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:24:25,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71034343] [2023-12-22 10:24:25,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71034343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:24:25,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:24:25,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:24:25,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984487107] [2023-12-22 10:24:25,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:24:25,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:24:25,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:24:25,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:24:25,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:24:25,917 INFO L87 Difference]: Start difference. First operand 43561 states and 51692 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2023-12-22 10:25:03,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:25:03,006 INFO L93 Difference]: Finished difference Result 103643 states and 123788 transitions. [2023-12-22 10:25:03,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:25:03,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 390 [2023-12-22 10:25:03,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:25:03,073 INFO L225 Difference]: With dead ends: 103643 [2023-12-22 10:25:03,073 INFO L226 Difference]: Without dead ends: 60834 [2023-12-22 10:25:03,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:25:03,094 INFO L413 NwaCegarLoop]: 1365 mSDtfsCounter, 665 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 2958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.6s IncrementalHoareTripleChecker+Time [2023-12-22 10:25:03,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1372 Invalid, 2958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 36.6s Time] [2023-12-22 10:25:03,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60834 states. [2023-12-22 10:25:03,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60834 to 59332. [2023-12-22 10:25:03,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59332 states, 59331 states have (on average 1.1560735534543494) internal successors, (68591), 59331 states have internal predecessors, (68591), 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) [2023-12-22 10:25:03,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59332 states to 59332 states and 68591 transitions. [2023-12-22 10:25:03,775 INFO L78 Accepts]: Start accepts. Automaton has 59332 states and 68591 transitions. Word has length 390 [2023-12-22 10:25:03,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:25:03,776 INFO L495 AbstractCegarLoop]: Abstraction has 59332 states and 68591 transitions. [2023-12-22 10:25:03,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2023-12-22 10:25:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 59332 states and 68591 transitions. [2023-12-22 10:25:03,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2023-12-22 10:25:03,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:25:03,798 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:25:03,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-22 10:25:04,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 10:25:04,002 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:25:04,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:25:04,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1789610203, now seen corresponding path program 1 times [2023-12-22 10:25:04,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:25:04,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091582390] [2023-12-22 10:25:04,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:25:04,004 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 [2023-12-22 10:25:04,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:25:04,005 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 10:25:04,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-22 10:25:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:25:04,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 10:25:04,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:25:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 113 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:25:04,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 10:25:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 321 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:25:12,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:25:12,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091582390] [2023-12-22 10:25:12,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091582390] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 10:25:12,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 10:25:12,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-22 10:25:12,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373175957] [2023-12-22 10:25:12,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 10:25:12,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 10:25:12,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:25:12,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 10:25:12,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-22 10:25:12,599 INFO L87 Difference]: Start difference. First operand 59332 states and 68591 transitions. Second operand has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 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) [2023-12-22 10:26:06,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 10:26:17,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 10:26:26,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 10:26:34,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 10:26:38,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 10:27:03,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 10:27:09,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 10:27:12,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 10:27:15,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 10:27:31,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 10:28:28,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 10:28:38,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 10:28:41,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 10:28:52,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-22 10:29:03,283 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 [2023-12-22 10:29:03,283 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 (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 10:29:03,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-22 10:29:03,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 782 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-22 10:29:03,428 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 3758 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 6299 mSolverCounterSat, 906 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 212.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3758 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 7205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 906 IncrementalHoareTripleChecker+Valid, 6299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 230.1s IncrementalHoareTripleChecker+Time [2023-12-22 10:29:03,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3758 Valid, 81 Invalid, 7205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [906 Valid, 6299 Invalid, 0 Unknown, 0 Unchecked, 230.1s Time] [2023-12-22 10:29:03,429 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-22 10:29:03,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-22 10:29:03,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 10:29:03,631 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (59332states) and FLOYD_HOARE automaton (currently 8 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (33407 states constructed, input type IntersectNwa). [2023-12-22 10:29:03,634 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:29:03,636 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 10:29:03,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 10:29:03 BoogieIcfgContainer [2023-12-22 10:29:03,638 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 10:29:03,638 INFO L158 Benchmark]: Toolchain (without parser) took 868417.03ms. Allocated memory was 234.9MB in the beginning and 616.6MB in the end (delta: 381.7MB). Free memory was 155.6MB in the beginning and 341.8MB in the end (delta: -186.2MB). Peak memory consumption was 371.9MB. Max. memory is 8.0GB. [2023-12-22 10:29:03,638 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 234.9MB. Free memory is still 183.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 10:29:03,638 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1265.59ms. Allocated memory was 234.9MB in the beginning and 339.7MB in the end (delta: 104.9MB). Free memory was 155.3MB in the beginning and 260.4MB in the end (delta: -105.0MB). Peak memory consumption was 83.2MB. Max. memory is 8.0GB. [2023-12-22 10:29:03,638 INFO L158 Benchmark]: Boogie Procedure Inliner took 152.72ms. Allocated memory is still 339.7MB. Free memory was 260.4MB in the beginning and 225.8MB in the end (delta: 34.6MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-12-22 10:29:03,639 INFO L158 Benchmark]: Boogie Preprocessor took 226.07ms. Allocated memory is still 339.7MB. Free memory was 225.8MB in the beginning and 189.6MB in the end (delta: 36.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-22 10:29:03,639 INFO L158 Benchmark]: RCFGBuilder took 25171.88ms. Allocated memory was 339.7MB in the beginning and 616.6MB in the end (delta: 276.8MB). Free memory was 189.6MB in the beginning and 440.8MB in the end (delta: -251.2MB). Peak memory consumption was 177.2MB. Max. memory is 8.0GB. [2023-12-22 10:29:03,639 INFO L158 Benchmark]: TraceAbstraction took 841594.62ms. Allocated memory is still 616.6MB. Free memory was 440.3MB in the beginning and 341.8MB in the end (delta: 98.5MB). Peak memory consumption was 274.7MB. Max. memory is 8.0GB. [2023-12-22 10:29:03,640 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 234.9MB. Free memory is still 183.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1265.59ms. Allocated memory was 234.9MB in the beginning and 339.7MB in the end (delta: 104.9MB). Free memory was 155.3MB in the beginning and 260.4MB in the end (delta: -105.0MB). Peak memory consumption was 83.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 152.72ms. Allocated memory is still 339.7MB. Free memory was 260.4MB in the beginning and 225.8MB in the end (delta: 34.6MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 226.07ms. Allocated memory is still 339.7MB. Free memory was 225.8MB in the beginning and 189.6MB in the end (delta: 36.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * RCFGBuilder took 25171.88ms. Allocated memory was 339.7MB in the beginning and 616.6MB in the end (delta: 276.8MB). Free memory was 189.6MB in the beginning and 440.8MB in the end (delta: -251.2MB). Peak memory consumption was 177.2MB. Max. memory is 8.0GB. * TraceAbstraction took 841594.62ms. Allocated memory is still 616.6MB. Free memory was 440.3MB in the beginning and 341.8MB in the end (delta: 98.5MB). Peak memory consumption was 274.7MB. 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: 142]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 142). Cancelled while NwaCegarLoop was constructing difference of abstraction (59332states) and FLOYD_HOARE automaton (currently 8 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (33407 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 756 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 841.6s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 818.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18326 SdHoareTripleChecker+Valid, 813.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18326 mSDsluCounter, 11755 SdHoareTripleChecker+Invalid, 713.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 171 mSDsCounter, 8887 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44112 IncrementalHoareTripleChecker+Invalid, 52999 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8887 mSolverCounterUnsat, 11584 mSDtfsCounter, 44112 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5242 GetRequests, 5208 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59332occurred in iteration=13, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 6832 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 15.6s InterpolantComputationTime, 3668 NumberOfCodeBlocks, 3668 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 5236 ConstructedInterpolants, 0 QuantifiedInterpolants, 18818 SizeOfPredicates, 7 NumberOfNonLiveVariables, 4421 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 19 InterpolantComputations, 12 PerfectInterpolantSequences, 4065/4818 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