/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/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 07:36:43,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 07:36:43,371 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 07:36:43,374 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 07:36:43,375 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 07:36:43,403 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 07:36:43,403 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 07:36:43,404 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 07:36:43,404 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 07:36:43,408 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 07:36:43,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 07:36:43,409 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 07:36:43,410 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 07:36:43,411 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 07:36:43,411 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 07:36:43,411 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 07:36:43,411 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 07:36:43,412 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 07:36:43,413 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 07:36:43,413 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 07:36:43,413 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 07:36:43,414 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 07:36:43,414 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 07:36:43,414 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 07:36:43,414 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 07:36:43,414 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 07:36:43,414 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 07:36:43,415 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 07:36:43,415 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 07:36:43,415 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 07:36:43,416 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 07:36:43,416 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 07:36:43,416 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 07:36:43,416 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 07:36:43,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 07:36:43,416 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 07:36:43,416 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 07:36:43,417 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 07:36:43,417 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 07:36:43,417 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 07:36:43,417 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 07:36:43,417 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 07:36:43,417 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 07:36:43,417 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 07:36:43,418 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 07:36:43,418 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 07:36:43,418 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 07:36:43,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 07:36:43,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 07:36:43,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 07:36:43,620 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 07:36:43,624 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 07:36:43,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c [2023-12-25 07:36:44,667 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 07:36:44,850 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 07:36:44,850 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c [2023-12-25 07:36:44,858 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/185d99f13/400a3505bb294953a1e42d90ccb69e02/FLAG46a17a128 [2023-12-25 07:36:44,868 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/185d99f13/400a3505bb294953a1e42d90ccb69e02 [2023-12-25 07:36:44,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 07:36:44,873 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 07:36:44,874 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 07:36:44,874 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 07:36:44,878 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 07:36:44,878 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:36:44" (1/1) ... [2023-12-25 07:36:44,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d957682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:36:44, skipping insertion in model container [2023-12-25 07:36:44,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:36:44" (1/1) ... [2023-12-25 07:36:44,903 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 07:36:45,052 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c[9529,9542] [2023-12-25 07:36:45,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 07:36:45,069 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 07:36:45,120 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c[9529,9542] [2023-12-25 07:36:45,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 07:36:45,134 INFO L206 MainTranslator]: Completed translation [2023-12-25 07:36:45,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:36:45 WrapperNode [2023-12-25 07:36:45,134 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 07:36:45,135 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 07:36:45,135 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 07:36:45,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 07:36:45,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:36:45" (1/1) ... [2023-12-25 07:36:45,150 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:36:45" (1/1) ... [2023-12-25 07:36:45,174 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 294 [2023-12-25 07:36:45,175 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 07:36:45,175 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 07:36:45,175 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 07:36:45,175 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 07:36:45,182 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:36:45" (1/1) ... [2023-12-25 07:36:45,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:36:45" (1/1) ... [2023-12-25 07:36:45,185 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:36:45" (1/1) ... [2023-12-25 07:36:45,201 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]. [2023-12-25 07:36:45,202 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:36:45" (1/1) ... [2023-12-25 07:36:45,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:36:45" (1/1) ... [2023-12-25 07:36:45,214 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:36:45" (1/1) ... [2023-12-25 07:36:45,221 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:36:45" (1/1) ... [2023-12-25 07:36:45,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:36:45" (1/1) ... [2023-12-25 07:36:45,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:36:45" (1/1) ... [2023-12-25 07:36:45,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 07:36:45,226 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 07:36:45,226 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 07:36:45,226 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 07:36:45,227 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:36:45" (1/1) ... [2023-12-25 07:36:45,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 07:36:45,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 07:36:45,264 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) [2023-12-25 07:36:45,272 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 [2023-12-25 07:36:45,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 07:36:45,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 07:36:45,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 07:36:45,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 07:36:45,376 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 07:36:45,377 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 07:36:45,708 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 07:36:45,740 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 07:36:45,740 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 07:36:45,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:36:45 BoogieIcfgContainer [2023-12-25 07:36:45,740 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 07:36:45,742 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 07:36:45,742 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 07:36:45,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 07:36:45,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 07:36:44" (1/3) ... [2023-12-25 07:36:45,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406b2a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:36:45, skipping insertion in model container [2023-12-25 07:36:45,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:36:45" (2/3) ... [2023-12-25 07:36:45,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406b2a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:36:45, skipping insertion in model container [2023-12-25 07:36:45,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:36:45" (3/3) ... [2023-12-25 07:36:45,748 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c [2023-12-25 07:36:45,760 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 07:36:45,761 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 07:36:45,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 07:36:45,805 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;@34276de9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 07:36:45,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 07:36:45,809 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 79 states have (on average 1.7721518987341771) internal successors, (140), 80 states have internal predecessors, (140), 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) [2023-12-25 07:36:45,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-25 07:36:45,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:36:45,823 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] [2023-12-25 07:36:45,823 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:36:45,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:36:45,828 INFO L85 PathProgramCache]: Analyzing trace with hash -436537251, now seen corresponding path program 1 times [2023-12-25 07:36:45,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:36:45,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429687608] [2023-12-25 07:36:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:36:45,839 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 [2023-12-25 07:36:45,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:36:45,841 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) [2023-12-25 07:36:45,845 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 [2023-12-25 07:36:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:36:45,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-25 07:36:45,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:36:45,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:45,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:36:45,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:36:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429687608] [2023-12-25 07:36:45,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429687608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:36:45,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:36:45,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 07:36:45,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881314932] [2023-12-25 07:36:45,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:36:45,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-25 07:36:45,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:36:45,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-25 07:36:45,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 07:36:45,997 INFO L87 Difference]: Start difference. First operand has 81 states, 79 states have (on average 1.7721518987341771) internal successors, (140), 80 states have internal predecessors, (140), 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 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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) [2023-12-25 07:36:46,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:36:46,026 INFO L93 Difference]: Finished difference Result 133 states and 227 transitions. [2023-12-25 07:36:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-25 07:36:46,028 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 26 [2023-12-25 07:36:46,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:36:46,040 INFO L225 Difference]: With dead ends: 133 [2023-12-25 07:36:46,040 INFO L226 Difference]: Without dead ends: 79 [2023-12-25 07:36:46,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 07:36:46,045 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:36:46,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:36:46,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-25 07:36:46,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-12-25 07:36:46,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.7307692307692308) internal successors, (135), 78 states have internal predecessors, (135), 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) [2023-12-25 07:36:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 135 transitions. [2023-12-25 07:36:46,078 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 135 transitions. Word has length 26 [2023-12-25 07:36:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:36:46,079 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 135 transitions. [2023-12-25 07:36:46,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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) [2023-12-25 07:36:46,079 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 135 transitions. [2023-12-25 07:36:46,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-25 07:36:46,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:36:46,080 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] [2023-12-25 07:36:46,086 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 [2023-12-25 07:36:46,283 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 [2023-12-25 07:36:46,284 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:36:46,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:36:46,285 INFO L85 PathProgramCache]: Analyzing trace with hash 2052991711, now seen corresponding path program 1 times [2023-12-25 07:36:46,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:36:46,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587860422] [2023-12-25 07:36:46,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:36:46,286 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 [2023-12-25 07:36:46,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:36:46,293 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) [2023-12-25 07:36:46,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-25 07:36:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:36:46,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 07:36:46,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:36:46,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:46,382 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:36:46,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:36:46,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587860422] [2023-12-25 07:36:46,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587860422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:36:46,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:36:46,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:36:46,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336668865] [2023-12-25 07:36:46,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:36:46,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:36:46,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:36:46,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:36:46,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:36:46,384 INFO L87 Difference]: Start difference. First operand 79 states and 135 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-12-25 07:36:46,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:36:46,436 INFO L93 Difference]: Finished difference Result 133 states and 221 transitions. [2023-12-25 07:36:46,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:36:46,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2023-12-25 07:36:46,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:36:46,439 INFO L225 Difference]: With dead ends: 133 [2023-12-25 07:36:46,439 INFO L226 Difference]: Without dead ends: 79 [2023-12-25 07:36:46,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:36:46,442 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:36:46,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 369 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:36:46,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-25 07:36:46,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-12-25 07:36:46,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.4230769230769231) internal successors, (111), 78 states have internal predecessors, (111), 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) [2023-12-25 07:36:46,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 111 transitions. [2023-12-25 07:36:46,454 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 111 transitions. Word has length 26 [2023-12-25 07:36:46,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:36:46,454 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 111 transitions. [2023-12-25 07:36:46,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-12-25 07:36:46,455 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 111 transitions. [2023-12-25 07:36:46,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-25 07:36:46,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:36:46,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:36:46,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-25 07:36:46,659 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 [2023-12-25 07:36:46,660 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:36:46,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:36:46,661 INFO L85 PathProgramCache]: Analyzing trace with hash 794604760, now seen corresponding path program 1 times [2023-12-25 07:36:46,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:36:46,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627779378] [2023-12-25 07:36:46,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:36:46,662 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 [2023-12-25 07:36:46,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:36:46,663 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) [2023-12-25 07:36:46,667 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 [2023-12-25 07:36:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:36:46,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:36:46,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:36:46,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:46,804 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:36:46,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:36:46,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627779378] [2023-12-25 07:36:46,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627779378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:36:46,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:36:46,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:36:46,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959845735] [2023-12-25 07:36:46,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:36:46,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:36:46,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:36:46,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:36:46,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:36:46,815 INFO L87 Difference]: Start difference. First operand 79 states and 111 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2023-12-25 07:36:46,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:36:46,835 INFO L93 Difference]: Finished difference Result 173 states and 263 transitions. [2023-12-25 07:36:46,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:36:46,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2023-12-25 07:36:46,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:36:46,836 INFO L225 Difference]: With dead ends: 173 [2023-12-25 07:36:46,836 INFO L226 Difference]: Without dead ends: 122 [2023-12-25 07:36:46,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:36:46,837 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 59 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:36:46,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 209 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:36:46,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-25 07:36:46,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2023-12-25 07:36:46,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.495798319327731) internal successors, (178), 119 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) [2023-12-25 07:36:46,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 178 transitions. [2023-12-25 07:36:46,852 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 178 transitions. Word has length 49 [2023-12-25 07:36:46,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:36:46,853 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 178 transitions. [2023-12-25 07:36:46,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2023-12-25 07:36:46,853 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 178 transitions. [2023-12-25 07:36:46,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-25 07:36:46,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:36:46,854 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:36:46,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-25 07:36:47,059 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 [2023-12-25 07:36:47,060 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:36:47,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:36:47,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1181399799, now seen corresponding path program 1 times [2023-12-25 07:36:47,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:36:47,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302387019] [2023-12-25 07:36:47,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:36:47,061 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 [2023-12-25 07:36:47,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:36:47,062 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) [2023-12-25 07:36:47,071 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 [2023-12-25 07:36:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:36:47,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 07:36:47,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:36:47,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:47,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:36:47,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:36:47,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302387019] [2023-12-25 07:36:47,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302387019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:36:47,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:36:47,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 07:36:47,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717950625] [2023-12-25 07:36:47,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:36:47,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 07:36:47,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:36:47,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 07:36:47,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:36:47,527 INFO L87 Difference]: Start difference. First operand 120 states and 178 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2023-12-25 07:36:47,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:36:47,615 INFO L93 Difference]: Finished difference Result 580 states and 928 transitions. [2023-12-25 07:36:47,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 07:36:47,616 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 49 [2023-12-25 07:36:47,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:36:47,620 INFO L225 Difference]: With dead ends: 580 [2023-12-25 07:36:47,620 INFO L226 Difference]: Without dead ends: 488 [2023-12-25 07:36:47,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:36:47,625 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 374 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:36:47,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 533 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:36:47,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-12-25 07:36:47,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 210. [2023-12-25 07:36:47,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.5454545454545454) internal successors, (323), 209 states have internal predecessors, (323), 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) [2023-12-25 07:36:47,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 323 transitions. [2023-12-25 07:36:47,645 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 323 transitions. Word has length 49 [2023-12-25 07:36:47,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:36:47,645 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 323 transitions. [2023-12-25 07:36:47,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2023-12-25 07:36:47,645 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 323 transitions. [2023-12-25 07:36:47,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-25 07:36:47,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:36:47,649 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:36:47,654 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 [2023-12-25 07:36:47,849 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 [2023-12-25 07:36:47,850 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:36:47,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:36:47,850 INFO L85 PathProgramCache]: Analyzing trace with hash -2044342744, now seen corresponding path program 1 times [2023-12-25 07:36:47,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:36:47,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652918357] [2023-12-25 07:36:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:36:47,851 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 [2023-12-25 07:36:47,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:36:47,851 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) [2023-12-25 07:36:47,852 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 [2023-12-25 07:36:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:36:47,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 07:36:47,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:36:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:47,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:36:47,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:36:47,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652918357] [2023-12-25 07:36:47,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652918357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:36:47,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:36:47,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:36:47,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799473132] [2023-12-25 07:36:47,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:36:47,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:36:47,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:36:47,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:36:47,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:36:47,924 INFO L87 Difference]: Start difference. First operand 210 states and 323 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2023-12-25 07:36:47,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:36:47,942 INFO L93 Difference]: Finished difference Result 224 states and 340 transitions. [2023-12-25 07:36:47,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:36:47,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2023-12-25 07:36:47,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:36:47,943 INFO L225 Difference]: With dead ends: 224 [2023-12-25 07:36:47,943 INFO L226 Difference]: Without dead ends: 222 [2023-12-25 07:36:47,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:36:47,944 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 1 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:36:47,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 314 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:36:47,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-12-25 07:36:47,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 218. [2023-12-25 07:36:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.5253456221198156) internal successors, (331), 217 states have internal predecessors, (331), 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) [2023-12-25 07:36:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 331 transitions. [2023-12-25 07:36:47,948 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 331 transitions. Word has length 50 [2023-12-25 07:36:47,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:36:47,949 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 331 transitions. [2023-12-25 07:36:47,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2023-12-25 07:36:47,949 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 331 transitions. [2023-12-25 07:36:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-25 07:36:47,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:36:47,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:36:47,955 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 (6)] Forceful destruction successful, exit code 0 [2023-12-25 07:36:48,152 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 [2023-12-25 07:36:48,152 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:36:48,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:36:48,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1050914879, now seen corresponding path program 1 times [2023-12-25 07:36:48,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:36:48,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681785457] [2023-12-25 07:36:48,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:36:48,153 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 [2023-12-25 07:36:48,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:36:48,154 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) [2023-12-25 07:36:48,168 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 [2023-12-25 07:36:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:36:48,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:36:48,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:36:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:48,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:36:48,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:36:48,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681785457] [2023-12-25 07:36:48,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681785457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:36:48,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:36:48,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:36:48,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474467412] [2023-12-25 07:36:48,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:36:48,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:36:48,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:36:48,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:36:48,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:36:48,274 INFO L87 Difference]: Start difference. First operand 218 states and 331 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2023-12-25 07:36:48,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:36:48,289 INFO L93 Difference]: Finished difference Result 570 states and 889 transitions. [2023-12-25 07:36:48,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:36:48,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2023-12-25 07:36:48,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:36:48,291 INFO L225 Difference]: With dead ends: 570 [2023-12-25 07:36:48,291 INFO L226 Difference]: Without dead ends: 380 [2023-12-25 07:36:48,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:36:48,294 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 51 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:36:48,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 182 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:36:48,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-12-25 07:36:48,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 374. [2023-12-25 07:36:48,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 1.5361930294906165) internal successors, (573), 373 states have internal predecessors, (573), 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) [2023-12-25 07:36:48,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 573 transitions. [2023-12-25 07:36:48,303 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 573 transitions. Word has length 51 [2023-12-25 07:36:48,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:36:48,304 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 573 transitions. [2023-12-25 07:36:48,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2023-12-25 07:36:48,304 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 573 transitions. [2023-12-25 07:36:48,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-25 07:36:48,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:36:48,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:36:48,309 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 [2023-12-25 07:36:48,507 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 [2023-12-25 07:36:48,508 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:36:48,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:36:48,508 INFO L85 PathProgramCache]: Analyzing trace with hash 2005837455, now seen corresponding path program 1 times [2023-12-25 07:36:48,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:36:48,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491940333] [2023-12-25 07:36:48,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:36:48,508 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 [2023-12-25 07:36:48,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:36:48,509 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) [2023-12-25 07:36:48,510 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 [2023-12-25 07:36:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:36:48,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:36:48,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:36:48,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:48,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:36:48,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:36:48,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491940333] [2023-12-25 07:36:48,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491940333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:36:48,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:36:48,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:36:48,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313187791] [2023-12-25 07:36:48,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:36:48,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:36:48,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:36:48,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:36:48,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:36:48,586 INFO L87 Difference]: Start difference. First operand 374 states and 573 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2023-12-25 07:36:48,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:36:48,606 INFO L93 Difference]: Finished difference Result 1002 states and 1551 transitions. [2023-12-25 07:36:48,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:36:48,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2023-12-25 07:36:48,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:36:48,608 INFO L225 Difference]: With dead ends: 1002 [2023-12-25 07:36:48,608 INFO L226 Difference]: Without dead ends: 656 [2023-12-25 07:36:48,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:36:48,609 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 63 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:36:48,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 223 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:36:48,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2023-12-25 07:36:48,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 654. [2023-12-25 07:36:48,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 653 states have (on average 1.5267993874425727) internal successors, (997), 653 states have internal predecessors, (997), 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) [2023-12-25 07:36:48,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 997 transitions. [2023-12-25 07:36:48,619 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 997 transitions. Word has length 52 [2023-12-25 07:36:48,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:36:48,620 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 997 transitions. [2023-12-25 07:36:48,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2023-12-25 07:36:48,620 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 997 transitions. [2023-12-25 07:36:48,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-25 07:36:48,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:36:48,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:36:48,625 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 [2023-12-25 07:36:48,824 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 [2023-12-25 07:36:48,824 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:36:48,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:36:48,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1823510447, now seen corresponding path program 1 times [2023-12-25 07:36:48,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:36:48,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280914796] [2023-12-25 07:36:48,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:36:48,825 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 [2023-12-25 07:36:48,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:36:48,826 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) [2023-12-25 07:36:48,827 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 [2023-12-25 07:36:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:36:48,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:36:48,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:36:48,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:48,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:36:48,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:36:48,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280914796] [2023-12-25 07:36:48,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280914796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:36:48,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:36:48,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:36:48,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724743522] [2023-12-25 07:36:48,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:36:48,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:36:48,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:36:48,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:36:48,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:36:48,897 INFO L87 Difference]: Start difference. First operand 654 states and 997 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2023-12-25 07:36:48,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:36:48,918 INFO L93 Difference]: Finished difference Result 1778 states and 2711 transitions. [2023-12-25 07:36:48,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:36:48,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2023-12-25 07:36:48,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:36:48,922 INFO L225 Difference]: With dead ends: 1778 [2023-12-25 07:36:48,922 INFO L226 Difference]: Without dead ends: 1152 [2023-12-25 07:36:48,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:36:48,923 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 67 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:36:48,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 236 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:36:48,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2023-12-25 07:36:48,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1150. [2023-12-25 07:36:48,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 1.5013054830287207) internal successors, (1725), 1149 states have internal predecessors, (1725), 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) [2023-12-25 07:36:48,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1725 transitions. [2023-12-25 07:36:48,944 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1725 transitions. Word has length 52 [2023-12-25 07:36:48,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:36:48,944 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 1725 transitions. [2023-12-25 07:36:48,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2023-12-25 07:36:48,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1725 transitions. [2023-12-25 07:36:48,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-25 07:36:48,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:36:48,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:36:48,950 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 [2023-12-25 07:36:49,147 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 [2023-12-25 07:36:49,148 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:36:49,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:36:49,149 INFO L85 PathProgramCache]: Analyzing trace with hash 484386469, now seen corresponding path program 1 times [2023-12-25 07:36:49,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:36:49,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81558028] [2023-12-25 07:36:49,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:36:49,149 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 [2023-12-25 07:36:49,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:36:49,150 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) [2023-12-25 07:36:49,152 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 [2023-12-25 07:36:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:36:49,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:36:49,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:36:49,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:49,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:36:49,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:36:49,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81558028] [2023-12-25 07:36:49,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81558028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:36:49,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:36:49,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:36:49,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882376027] [2023-12-25 07:36:49,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:36:49,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:36:49,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:36:49,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:36:49,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:36:49,225 INFO L87 Difference]: Start difference. First operand 1150 states and 1725 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2023-12-25 07:36:49,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:36:49,247 INFO L93 Difference]: Finished difference Result 2245 states and 3395 transitions. [2023-12-25 07:36:49,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:36:49,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2023-12-25 07:36:49,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:36:49,252 INFO L225 Difference]: With dead ends: 2245 [2023-12-25 07:36:49,252 INFO L226 Difference]: Without dead ends: 1618 [2023-12-25 07:36:49,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:36:49,253 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 68 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:36:49,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 245 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:36:49,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2023-12-25 07:36:49,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1616. [2023-12-25 07:36:49,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1615 states have (on average 1.4904024767801858) internal successors, (2407), 1615 states have internal predecessors, (2407), 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) [2023-12-25 07:36:49,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2407 transitions. [2023-12-25 07:36:49,280 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2407 transitions. Word has length 53 [2023-12-25 07:36:49,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:36:49,280 INFO L495 AbstractCegarLoop]: Abstraction has 1616 states and 2407 transitions. [2023-12-25 07:36:49,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2023-12-25 07:36:49,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2407 transitions. [2023-12-25 07:36:49,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-25 07:36:49,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:36:49,282 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:36:49,286 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 [2023-12-25 07:36:49,486 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 [2023-12-25 07:36:49,487 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:36:49,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:36:49,487 INFO L85 PathProgramCache]: Analyzing trace with hash -573145706, now seen corresponding path program 1 times [2023-12-25 07:36:49,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:36:49,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762042986] [2023-12-25 07:36:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:36:49,488 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 [2023-12-25 07:36:49,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:36:49,488 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) [2023-12-25 07:36:49,490 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 [2023-12-25 07:36:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:36:49,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:36:49,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:36:49,561 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:49,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:36:49,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:36:49,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762042986] [2023-12-25 07:36:49,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762042986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:36:49,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:36:49,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:36:49,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777909408] [2023-12-25 07:36:49,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:36:49,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:36:49,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:36:49,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:36:49,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:36:49,563 INFO L87 Difference]: Start difference. First operand 1616 states and 2407 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2023-12-25 07:36:49,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:36:49,584 INFO L93 Difference]: Finished difference Result 2735 states and 4093 transitions. [2023-12-25 07:36:49,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:36:49,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2023-12-25 07:36:49,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:36:49,602 INFO L225 Difference]: With dead ends: 2735 [2023-12-25 07:36:49,602 INFO L226 Difference]: Without dead ends: 1149 [2023-12-25 07:36:49,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:36:49,604 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 57 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:36:49,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 236 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:36:49,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2023-12-25 07:36:49,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1147. [2023-12-25 07:36:49,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 1.4816753926701571) internal successors, (1698), 1146 states have internal predecessors, (1698), 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) [2023-12-25 07:36:49,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1698 transitions. [2023-12-25 07:36:49,624 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1698 transitions. Word has length 74 [2023-12-25 07:36:49,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:36:49,624 INFO L495 AbstractCegarLoop]: Abstraction has 1147 states and 1698 transitions. [2023-12-25 07:36:49,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2023-12-25 07:36:49,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1698 transitions. [2023-12-25 07:36:49,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-25 07:36:49,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:36:49,625 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:36:49,630 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 [2023-12-25 07:36:49,827 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 [2023-12-25 07:36:49,828 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:36:49,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:36:49,828 INFO L85 PathProgramCache]: Analyzing trace with hash -2003246849, now seen corresponding path program 1 times [2023-12-25 07:36:49,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:36:49,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980924199] [2023-12-25 07:36:49,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:36:49,829 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 [2023-12-25 07:36:49,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:36:49,830 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) [2023-12-25 07:36:49,857 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 [2023-12-25 07:36:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:36:49,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 07:36:49,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:36:50,357 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:50,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:36:50,615 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:50,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:36:50,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980924199] [2023-12-25 07:36:50,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980924199] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:36:50,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:36:50,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 07:36:50,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740868393] [2023-12-25 07:36:50,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:36:50,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:36:50,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:36:50,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:36:50,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:36:50,617 INFO L87 Difference]: Start difference. First operand 1147 states and 1698 transitions. Second operand has 16 states, 16 states have (on average 8.125) internal successors, (130), 15 states have internal predecessors, (130), 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) [2023-12-25 07:36:51,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:36:51,261 INFO L93 Difference]: Finished difference Result 3971 states and 5823 transitions. [2023-12-25 07:36:51,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 07:36:51,261 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.125) internal successors, (130), 15 states have internal predecessors, (130), 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 75 [2023-12-25 07:36:51,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:36:51,268 INFO L225 Difference]: With dead ends: 3971 [2023-12-25 07:36:51,269 INFO L226 Difference]: Without dead ends: 2881 [2023-12-25 07:36:51,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2023-12-25 07:36:51,271 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 520 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 07:36:51,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 692 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 07:36:51,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2023-12-25 07:36:51,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2365. [2023-12-25 07:36:51,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2365 states, 2364 states have (on average 1.4771573604060915) internal successors, (3492), 2364 states have internal predecessors, (3492), 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) [2023-12-25 07:36:51,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 3492 transitions. [2023-12-25 07:36:51,326 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 3492 transitions. Word has length 75 [2023-12-25 07:36:51,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:36:51,326 INFO L495 AbstractCegarLoop]: Abstraction has 2365 states and 3492 transitions. [2023-12-25 07:36:51,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.125) internal successors, (130), 15 states have internal predecessors, (130), 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) [2023-12-25 07:36:51,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 3492 transitions. [2023-12-25 07:36:51,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-25 07:36:51,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:36:51,327 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:36:51,332 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 [2023-12-25 07:36:51,532 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 [2023-12-25 07:36:51,533 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:36:51,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:36:51,533 INFO L85 PathProgramCache]: Analyzing trace with hash 419178948, now seen corresponding path program 1 times [2023-12-25 07:36:51,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:36:51,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090373902] [2023-12-25 07:36:51,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:36:51,534 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 [2023-12-25 07:36:51,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:36:51,549 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) [2023-12-25 07:36:51,552 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 [2023-12-25 07:36:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:36:51,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:36:51,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:36:51,627 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:51,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:36:51,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:36:51,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090373902] [2023-12-25 07:36:51,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090373902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:36:51,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:36:51,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:36:51,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721081284] [2023-12-25 07:36:51,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:36:51,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:36:51,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:36:51,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:36:51,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:36:51,629 INFO L87 Difference]: Start difference. First operand 2365 states and 3492 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2023-12-25 07:36:51,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:36:51,702 INFO L93 Difference]: Finished difference Result 6900 states and 10175 transitions. [2023-12-25 07:36:51,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:36:51,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2023-12-25 07:36:51,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:36:51,713 INFO L225 Difference]: With dead ends: 6900 [2023-12-25 07:36:51,713 INFO L226 Difference]: Without dead ends: 4602 [2023-12-25 07:36:51,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:36:51,716 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 54 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:36:51,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 208 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:36:51,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4602 states. [2023-12-25 07:36:51,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4602 to 4600. [2023-12-25 07:36:51,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4600 states, 4599 states have (on average 1.4553163731245924) internal successors, (6693), 4599 states have internal predecessors, (6693), 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) [2023-12-25 07:36:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4600 states to 4600 states and 6693 transitions. [2023-12-25 07:36:51,818 INFO L78 Accepts]: Start accepts. Automaton has 4600 states and 6693 transitions. Word has length 76 [2023-12-25 07:36:51,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:36:51,818 INFO L495 AbstractCegarLoop]: Abstraction has 4600 states and 6693 transitions. [2023-12-25 07:36:51,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2023-12-25 07:36:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 4600 states and 6693 transitions. [2023-12-25 07:36:51,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-25 07:36:51,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:36:51,820 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:36:51,832 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 [2023-12-25 07:36:52,022 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 [2023-12-25 07:36:52,022 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:36:52,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:36:52,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1814377330, now seen corresponding path program 1 times [2023-12-25 07:36:52,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:36:52,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648883249] [2023-12-25 07:36:52,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:36:52,023 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 [2023-12-25 07:36:52,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:36:52,024 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) [2023-12-25 07:36:52,040 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 [2023-12-25 07:36:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:36:52,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:36:52,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:36:52,502 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:52,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:36:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:52,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:36:52,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648883249] [2023-12-25 07:36:52,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648883249] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:36:52,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:36:52,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:36:52,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447039036] [2023-12-25 07:36:52,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:36:52,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:36:52,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:36:52,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:36:52,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:36:52,728 INFO L87 Difference]: Start difference. First operand 4600 states and 6693 transitions. Second operand has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 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) [2023-12-25 07:36:54,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:36:54,410 INFO L93 Difference]: Finished difference Result 16672 states and 24127 transitions. [2023-12-25 07:36:54,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-25 07:36:54,410 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 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 76 [2023-12-25 07:36:54,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:36:54,453 INFO L225 Difference]: With dead ends: 16672 [2023-12-25 07:36:54,453 INFO L226 Difference]: Without dead ends: 12154 [2023-12-25 07:36:54,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2023-12-25 07:36:54,461 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 869 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 07:36:54,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1737 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 07:36:54,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12154 states. [2023-12-25 07:36:54,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12154 to 10480. [2023-12-25 07:36:54,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10480 states, 10479 states have (on average 1.4454623532779844) internal successors, (15147), 10479 states have internal predecessors, (15147), 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) [2023-12-25 07:36:54,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10480 states to 10480 states and 15147 transitions. [2023-12-25 07:36:54,746 INFO L78 Accepts]: Start accepts. Automaton has 10480 states and 15147 transitions. Word has length 76 [2023-12-25 07:36:54,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:36:54,746 INFO L495 AbstractCegarLoop]: Abstraction has 10480 states and 15147 transitions. [2023-12-25 07:36:54,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 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) [2023-12-25 07:36:54,746 INFO L276 IsEmpty]: Start isEmpty. Operand 10480 states and 15147 transitions. [2023-12-25 07:36:54,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-25 07:36:54,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:36:54,748 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:36:54,753 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 [2023-12-25 07:36:54,950 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 [2023-12-25 07:36:54,950 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:36:54,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:36:54,951 INFO L85 PathProgramCache]: Analyzing trace with hash -279309054, now seen corresponding path program 1 times [2023-12-25 07:36:54,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:36:54,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642124210] [2023-12-25 07:36:54,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:36:54,951 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 [2023-12-25 07:36:54,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:36:54,952 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) [2023-12-25 07:36:54,953 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 [2023-12-25 07:36:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:36:55,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:36:55,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:36:55,067 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:55,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:36:55,067 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:36:55,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642124210] [2023-12-25 07:36:55,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642124210] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:36:55,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:36:55,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:36:55,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831875669] [2023-12-25 07:36:55,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:36:55,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:36:55,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:36:55,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:36:55,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:36:55,069 INFO L87 Difference]: Start difference. First operand 10480 states and 15147 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2023-12-25 07:36:55,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:36:55,154 INFO L93 Difference]: Finished difference Result 15672 states and 22665 transitions. [2023-12-25 07:36:55,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:36:55,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2023-12-25 07:36:55,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:36:55,162 INFO L225 Difference]: With dead ends: 15672 [2023-12-25 07:36:55,162 INFO L226 Difference]: Without dead ends: 5294 [2023-12-25 07:36:55,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:36:55,171 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 48 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:36:55,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 217 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:36:55,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5294 states. [2023-12-25 07:36:55,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5294 to 5292. [2023-12-25 07:36:55,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5292 states, 5291 states have (on average 1.4286524286524287) internal successors, (7559), 5291 states have internal predecessors, (7559), 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) [2023-12-25 07:36:55,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 7559 transitions. [2023-12-25 07:36:55,318 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 7559 transitions. Word has length 76 [2023-12-25 07:36:55,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:36:55,319 INFO L495 AbstractCegarLoop]: Abstraction has 5292 states and 7559 transitions. [2023-12-25 07:36:55,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2023-12-25 07:36:55,319 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 7559 transitions. [2023-12-25 07:36:55,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-25 07:36:55,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:36:55,320 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:36:55,325 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 [2023-12-25 07:36:55,522 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 [2023-12-25 07:36:55,523 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:36:55,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:36:55,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1844046243, now seen corresponding path program 1 times [2023-12-25 07:36:55,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:36:55,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713199952] [2023-12-25 07:36:55,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:36:55,524 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 [2023-12-25 07:36:55,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:36:55,525 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:36:55,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-25 07:36:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:36:55,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 07:36:55,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:36:56,018 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:56,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:36:56,176 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:56,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:36:56,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713199952] [2023-12-25 07:36:56,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713199952] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:36:56,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:36:56,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 07:36:56,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045105651] [2023-12-25 07:36:56,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:36:56,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:36:56,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:36:56,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:36:56,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:36:56,178 INFO L87 Difference]: Start difference. First operand 5292 states and 7559 transitions. Second operand has 16 states, 16 states have (on average 8.5) internal successors, (136), 15 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:36:56,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:36:56,914 INFO L93 Difference]: Finished difference Result 19877 states and 28416 transitions. [2023-12-25 07:36:56,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 07:36:56,915 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.5) internal successors, (136), 15 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-25 07:36:56,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:36:56,939 INFO L225 Difference]: With dead ends: 19877 [2023-12-25 07:36:56,940 INFO L226 Difference]: Without dead ends: 14687 [2023-12-25 07:36:56,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2023-12-25 07:36:56,947 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 666 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 07:36:56,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 664 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 07:36:56,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14687 states. [2023-12-25 07:36:57,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14687 to 12175. [2023-12-25 07:36:57,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12175 states, 12174 states have (on average 1.4129291933629045) internal successors, (17201), 12174 states have internal predecessors, (17201), 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) [2023-12-25 07:36:57,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12175 states to 12175 states and 17201 transitions. [2023-12-25 07:36:57,258 INFO L78 Accepts]: Start accepts. Automaton has 12175 states and 17201 transitions. Word has length 76 [2023-12-25 07:36:57,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:36:57,259 INFO L495 AbstractCegarLoop]: Abstraction has 12175 states and 17201 transitions. [2023-12-25 07:36:57,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.5) internal successors, (136), 15 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:36:57,259 INFO L276 IsEmpty]: Start isEmpty. Operand 12175 states and 17201 transitions. [2023-12-25 07:36:57,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-25 07:36:57,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:36:57,261 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:36:57,292 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 (16)] Forceful destruction successful, exit code 0 [2023-12-25 07:36:57,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:36:57,462 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:36:57,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:36:57,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1531769170, now seen corresponding path program 1 times [2023-12-25 07:36:57,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:36:57,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051505021] [2023-12-25 07:36:57,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:36:57,463 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 [2023-12-25 07:36:57,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:36:57,464 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:36:57,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-25 07:36:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:36:57,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:36:57,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:36:58,058 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:58,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:36:58,259 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:58,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:36:58,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051505021] [2023-12-25 07:36:58,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051505021] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:36:58,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:36:58,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:36:58,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975423504] [2023-12-25 07:36:58,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:36:58,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:36:58,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:36:58,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:36:58,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:36:58,261 INFO L87 Difference]: Start difference. First operand 12175 states and 17201 transitions. Second operand has 16 states, 16 states have (on average 8.75) internal successors, (140), 16 states have internal predecessors, (140), 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) [2023-12-25 07:36:59,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:36:59,534 INFO L93 Difference]: Finished difference Result 32219 states and 45497 transitions. [2023-12-25 07:36:59,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 07:36:59,535 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.75) internal successors, (140), 16 states have internal predecessors, (140), 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 77 [2023-12-25 07:36:59,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:36:59,566 INFO L225 Difference]: With dead ends: 32219 [2023-12-25 07:36:59,566 INFO L226 Difference]: Without dead ends: 20146 [2023-12-25 07:36:59,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2023-12-25 07:36:59,576 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 1234 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 07:36:59,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 1117 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 07:36:59,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20146 states. [2023-12-25 07:36:59,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20146 to 15700. [2023-12-25 07:36:59,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15700 states, 15699 states have (on average 1.4169692337091535) internal successors, (22245), 15699 states have internal predecessors, (22245), 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) [2023-12-25 07:36:59,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15700 states to 15700 states and 22245 transitions. [2023-12-25 07:36:59,998 INFO L78 Accepts]: Start accepts. Automaton has 15700 states and 22245 transitions. Word has length 77 [2023-12-25 07:36:59,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:36:59,998 INFO L495 AbstractCegarLoop]: Abstraction has 15700 states and 22245 transitions. [2023-12-25 07:36:59,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.75) internal successors, (140), 16 states have internal predecessors, (140), 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) [2023-12-25 07:36:59,999 INFO L276 IsEmpty]: Start isEmpty. Operand 15700 states and 22245 transitions. [2023-12-25 07:37:00,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-25 07:37:00,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:37:00,001 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:37:00,003 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 (17)] Ended with exit code 0 [2023-12-25 07:37:00,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:37:00,203 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:37:00,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:37:00,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1783717376, now seen corresponding path program 1 times [2023-12-25 07:37:00,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:37:00,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258598451] [2023-12-25 07:37:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:37:00,204 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 [2023-12-25 07:37:00,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:37:00,205 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:37:00,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-25 07:37:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:37:00,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:37:00,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:37:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:37:00,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:37:00,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:37:00,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258598451] [2023-12-25 07:37:00,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258598451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:37:00,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:37:00,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:37:00,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762919812] [2023-12-25 07:37:00,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:37:00,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:37:00,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:37:00,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:37:00,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:37:00,286 INFO L87 Difference]: Start difference. First operand 15700 states and 22245 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-12-25 07:37:00,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:37:00,859 INFO L93 Difference]: Finished difference Result 46184 states and 65129 transitions. [2023-12-25 07:37:00,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:37:00,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2023-12-25 07:37:00,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:37:00,900 INFO L225 Difference]: With dead ends: 46184 [2023-12-25 07:37:00,900 INFO L226 Difference]: Without dead ends: 30586 [2023-12-25 07:37:00,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:37:00,911 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 53 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:37:00,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 214 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:37:00,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30586 states. [2023-12-25 07:37:01,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30586 to 30584. [2023-12-25 07:37:01,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30584 states, 30583 states have (on average 1.3898571101592387) internal successors, (42506), 30583 states have internal predecessors, (42506), 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) [2023-12-25 07:37:01,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30584 states to 30584 states and 42506 transitions. [2023-12-25 07:37:01,628 INFO L78 Accepts]: Start accepts. Automaton has 30584 states and 42506 transitions. Word has length 77 [2023-12-25 07:37:01,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:37:01,628 INFO L495 AbstractCegarLoop]: Abstraction has 30584 states and 42506 transitions. [2023-12-25 07:37:01,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-12-25 07:37:01,628 INFO L276 IsEmpty]: Start isEmpty. Operand 30584 states and 42506 transitions. [2023-12-25 07:37:01,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-25 07:37:01,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:37:01,633 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:37:01,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-25 07:37:01,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:37:01,835 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:37:01,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:37:01,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1250881506, now seen corresponding path program 1 times [2023-12-25 07:37:01,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:37:01,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257177078] [2023-12-25 07:37:01,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:37:01,836 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 [2023-12-25 07:37:01,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:37:01,837 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:37:01,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-25 07:37:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:37:01,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:37:01,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:37:01,911 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:37:01,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:37:01,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:37:01,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257177078] [2023-12-25 07:37:01,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257177078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:37:01,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:37:01,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:37:01,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597323374] [2023-12-25 07:37:01,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:37:01,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:37:01,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:37:01,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:37:01,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:37:01,933 INFO L87 Difference]: Start difference. First operand 30584 states and 42506 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-12-25 07:37:02,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:37:02,245 INFO L93 Difference]: Finished difference Result 45788 states and 63646 transitions. [2023-12-25 07:37:02,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:37:02,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2023-12-25 07:37:02,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:37:02,263 INFO L225 Difference]: With dead ends: 45788 [2023-12-25 07:37:02,263 INFO L226 Difference]: Without dead ends: 15366 [2023-12-25 07:37:02,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:37:02,281 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 42 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:37:02,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 198 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:37:02,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15366 states. [2023-12-25 07:37:02,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15366 to 15364. [2023-12-25 07:37:02,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15364 states, 15363 states have (on average 1.3747314977543448) internal successors, (21120), 15363 states have internal predecessors, (21120), 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) [2023-12-25 07:37:02,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15364 states to 15364 states and 21120 transitions. [2023-12-25 07:37:02,744 INFO L78 Accepts]: Start accepts. Automaton has 15364 states and 21120 transitions. Word has length 77 [2023-12-25 07:37:02,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:37:02,745 INFO L495 AbstractCegarLoop]: Abstraction has 15364 states and 21120 transitions. [2023-12-25 07:37:02,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-12-25 07:37:02,745 INFO L276 IsEmpty]: Start isEmpty. Operand 15364 states and 21120 transitions. [2023-12-25 07:37:02,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-25 07:37:02,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:37:02,747 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:37:02,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-12-25 07:37:02,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:37:02,950 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:37:02,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:37:02,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1757166851, now seen corresponding path program 1 times [2023-12-25 07:37:02,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:37:02,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160185693] [2023-12-25 07:37:02,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:37:02,951 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 [2023-12-25 07:37:02,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:37:02,952 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:37:02,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-25 07:37:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:37:03,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 07:37:03,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:37:03,504 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:37:03,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:37:03,719 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:37:03,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:37:03,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160185693] [2023-12-25 07:37:03,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160185693] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:37:03,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:37:03,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 07:37:03,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465765613] [2023-12-25 07:37:03,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:37:03,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:37:03,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:37:03,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:37:03,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:37:03,722 INFO L87 Difference]: Start difference. First operand 15364 states and 21120 transitions. Second operand has 16 states, 16 states have (on average 8.875) internal successors, (142), 15 states have internal predecessors, (142), 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) [2023-12-25 07:37:05,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:37:05,002 INFO L93 Difference]: Finished difference Result 56711 states and 78166 transitions. [2023-12-25 07:37:05,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 07:37:05,003 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.875) internal successors, (142), 15 states have internal predecessors, (142), 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 77 [2023-12-25 07:37:05,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:37:05,048 INFO L225 Difference]: With dead ends: 56711 [2023-12-25 07:37:05,049 INFO L226 Difference]: Without dead ends: 41509 [2023-12-25 07:37:05,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2023-12-25 07:37:05,064 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 968 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 07:37:05,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 688 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 07:37:05,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41509 states. [2023-12-25 07:37:05,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41509 to 36181. [2023-12-25 07:37:05,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36181 states, 36180 states have (on average 1.367827529021559) internal successors, (49488), 36180 states have internal predecessors, (49488), 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) [2023-12-25 07:37:06,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36181 states to 36181 states and 49488 transitions. [2023-12-25 07:37:06,036 INFO L78 Accepts]: Start accepts. Automaton has 36181 states and 49488 transitions. Word has length 77 [2023-12-25 07:37:06,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:37:06,036 INFO L495 AbstractCegarLoop]: Abstraction has 36181 states and 49488 transitions. [2023-12-25 07:37:06,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.875) internal successors, (142), 15 states have internal predecessors, (142), 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) [2023-12-25 07:37:06,036 INFO L276 IsEmpty]: Start isEmpty. Operand 36181 states and 49488 transitions. [2023-12-25 07:37:06,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-25 07:37:06,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:37:06,040 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:37:06,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-25 07:37:06,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:37:06,240 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:37:06,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:37:06,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1899870628, now seen corresponding path program 1 times [2023-12-25 07:37:06,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:37:06,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269063628] [2023-12-25 07:37:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:37:06,241 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 [2023-12-25 07:37:06,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:37:06,242 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:37:06,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-25 07:37:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:37:06,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 07:37:06,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:37:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:37:06,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:37:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:37:06,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:37:06,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269063628] [2023-12-25 07:37:06,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269063628] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:37:06,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:37:06,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 07:37:06,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446515139] [2023-12-25 07:37:06,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:37:06,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:37:06,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:37:06,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:37:06,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:37:06,958 INFO L87 Difference]: Start difference. First operand 36181 states and 49488 transitions. Second operand has 16 states, 16 states have (on average 9.25) internal successors, (148), 15 states have internal predecessors, (148), 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) [2023-12-25 07:37:09,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:37:09,593 INFO L93 Difference]: Finished difference Result 148948 states and 203295 transitions. [2023-12-25 07:37:09,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 07:37:09,593 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.25) internal successors, (148), 15 states have internal predecessors, (148), 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 78 [2023-12-25 07:37:09,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:37:09,850 INFO L225 Difference]: With dead ends: 148948 [2023-12-25 07:37:09,850 INFO L226 Difference]: Without dead ends: 112989 [2023-12-25 07:37:09,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2023-12-25 07:37:09,873 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 886 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 07:37:09,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 449 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 07:37:09,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112989 states. [2023-12-25 07:37:12,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112989 to 86414. [2023-12-25 07:37:12,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86414 states, 86413 states have (on average 1.362619050374365) internal successors, (117748), 86413 states have internal predecessors, (117748), 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) [2023-12-25 07:37:12,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86414 states to 86414 states and 117748 transitions. [2023-12-25 07:37:12,776 INFO L78 Accepts]: Start accepts. Automaton has 86414 states and 117748 transitions. Word has length 78 [2023-12-25 07:37:12,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:37:12,776 INFO L495 AbstractCegarLoop]: Abstraction has 86414 states and 117748 transitions. [2023-12-25 07:37:12,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.25) internal successors, (148), 15 states have internal predecessors, (148), 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) [2023-12-25 07:37:12,776 INFO L276 IsEmpty]: Start isEmpty. Operand 86414 states and 117748 transitions. [2023-12-25 07:37:12,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-25 07:37:12,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:37:12,783 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:37:12,787 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 (21)] Forceful destruction successful, exit code 0 [2023-12-25 07:37:12,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:37:12,986 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:37:12,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:37:12,987 INFO L85 PathProgramCache]: Analyzing trace with hash -52251645, now seen corresponding path program 1 times [2023-12-25 07:37:12,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:37:12,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160776836] [2023-12-25 07:37:12,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:37:12,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:37:12,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:37:12,989 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:37:12,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-25 07:37:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:37:13,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:37:13,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:37:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:37:13,081 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:37:13,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:37:13,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160776836] [2023-12-25 07:37:13,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160776836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:37:13,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:37:13,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:37:13,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596527939] [2023-12-25 07:37:13,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:37:13,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:37:13,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:37:13,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:37:13,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:37:13,083 INFO L87 Difference]: Start difference. First operand 86414 states and 117748 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-12-25 07:37:14,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:37:14,340 INFO L93 Difference]: Finished difference Result 136054 states and 184868 transitions. [2023-12-25 07:37:14,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:37:14,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2023-12-25 07:37:14,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:37:14,406 INFO L225 Difference]: With dead ends: 136054 [2023-12-25 07:37:14,406 INFO L226 Difference]: Without dead ends: 50012 [2023-12-25 07:37:14,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:37:14,452 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 36 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:37:14,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 179 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:37:14,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50012 states. [2023-12-25 07:37:15,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50012 to 50010. [2023-12-25 07:37:15,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50010 states, 50009 states have (on average 1.3353596352656523) internal successors, (66780), 50009 states have internal predecessors, (66780), 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) [2023-12-25 07:37:15,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50010 states to 50010 states and 66780 transitions. [2023-12-25 07:37:15,936 INFO L78 Accepts]: Start accepts. Automaton has 50010 states and 66780 transitions. Word has length 78 [2023-12-25 07:37:15,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:37:15,936 INFO L495 AbstractCegarLoop]: Abstraction has 50010 states and 66780 transitions. [2023-12-25 07:37:15,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-12-25 07:37:15,936 INFO L276 IsEmpty]: Start isEmpty. Operand 50010 states and 66780 transitions. [2023-12-25 07:37:15,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-25 07:37:15,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:37:15,942 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:37:15,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-25 07:37:16,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:37:16,144 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:37:16,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:37:16,144 INFO L85 PathProgramCache]: Analyzing trace with hash 573446077, now seen corresponding path program 1 times [2023-12-25 07:37:16,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:37:16,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852445891] [2023-12-25 07:37:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:37:16,145 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 [2023-12-25 07:37:16,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:37:16,145 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:37:16,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-25 07:37:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:37:16,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:37:16,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:37:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 07:37:16,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:37:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 07:37:16,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:37:16,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852445891] [2023-12-25 07:37:16,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852445891] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:37:16,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:37:16,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-25 07:37:16,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709815496] [2023-12-25 07:37:16,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:37:16,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 07:37:16,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:37:16,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 07:37:16,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:37:16,347 INFO L87 Difference]: Start difference. First operand 50010 states and 66780 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:37:19,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:37:19,645 INFO L93 Difference]: Finished difference Result 209180 states and 278069 transitions. [2023-12-25 07:37:19,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 07:37:19,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-12-25 07:37:19,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:37:19,846 INFO L225 Difference]: With dead ends: 209180 [2023-12-25 07:37:19,846 INFO L226 Difference]: Without dead ends: 159542 [2023-12-25 07:37:19,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-25 07:37:19,875 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 355 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:37:19,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 465 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:37:19,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159542 states. [2023-12-25 07:37:24,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159542 to 158456. [2023-12-25 07:37:24,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158456 states, 158455 states have (on average 1.2854185730964627) internal successors, (203681), 158455 states have internal predecessors, (203681), 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) [2023-12-25 07:37:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158456 states to 158456 states and 203681 transitions. [2023-12-25 07:37:24,633 INFO L78 Accepts]: Start accepts. Automaton has 158456 states and 203681 transitions. Word has length 79 [2023-12-25 07:37:24,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:37:24,633 INFO L495 AbstractCegarLoop]: Abstraction has 158456 states and 203681 transitions. [2023-12-25 07:37:24,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:37:24,633 INFO L276 IsEmpty]: Start isEmpty. Operand 158456 states and 203681 transitions. [2023-12-25 07:37:24,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-25 07:37:24,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:37:24,638 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:37:24,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-25 07:37:24,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:37:24,841 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:37:24,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:37:24,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1653824981, now seen corresponding path program 1 times [2023-12-25 07:37:24,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:37:24,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669913082] [2023-12-25 07:37:24,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:37:24,842 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 [2023-12-25 07:37:24,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:37:24,843 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2023-12-25 07:37:24,847 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 (24)] Waiting until timeout for monitored process [2023-12-25 07:37:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:37:24,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:37:24,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:37:24,915 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:37:24,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:37:24,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:37:24,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669913082] [2023-12-25 07:37:24,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669913082] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:37:24,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:37:24,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:37:24,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518709545] [2023-12-25 07:37:24,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:37:24,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:37:24,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:37:24,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:37:24,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:37:24,917 INFO L87 Difference]: Start difference. First operand 158456 states and 203681 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2023-12-25 07:37:28,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:37:28,754 INFO L93 Difference]: Finished difference Result 321282 states and 412866 transitions. [2023-12-25 07:37:28,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:37:28,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2023-12-25 07:37:28,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:37:29,107 INFO L225 Difference]: With dead ends: 321282 [2023-12-25 07:37:29,107 INFO L226 Difference]: Without dead ends: 168454 [2023-12-25 07:37:29,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:37:29,174 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 50 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:37:29,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 258 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:37:29,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168454 states. [2023-12-25 07:37:32,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168454 to 124746. [2023-12-25 07:37:32,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124746 states, 124745 states have (on average 1.2642109904204577) internal successors, (157704), 124745 states have internal predecessors, (157704), 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) [2023-12-25 07:37:33,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124746 states to 124746 states and 157704 transitions. [2023-12-25 07:37:33,190 INFO L78 Accepts]: Start accepts. Automaton has 124746 states and 157704 transitions. Word has length 79 [2023-12-25 07:37:33,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:37:33,190 INFO L495 AbstractCegarLoop]: Abstraction has 124746 states and 157704 transitions. [2023-12-25 07:37:33,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2023-12-25 07:37:33,191 INFO L276 IsEmpty]: Start isEmpty. Operand 124746 states and 157704 transitions. [2023-12-25 07:37:33,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-25 07:37:33,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:37:33,195 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:37:33,197 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 (24)] Ended with exit code 0 [2023-12-25 07:37:33,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 [2023-12-25 07:37:33,396 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:37:33,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:37:33,396 INFO L85 PathProgramCache]: Analyzing trace with hash 943405135, now seen corresponding path program 1 times [2023-12-25 07:37:33,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:37:33,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450962811] [2023-12-25 07:37:33,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:37:33,396 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 [2023-12-25 07:37:33,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:37:33,397 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-12-25 07:37:33,398 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 (25)] Waiting until timeout for monitored process [2023-12-25 07:37:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:37:33,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:37:33,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:37:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:37:33,468 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:37:33,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:37:33,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450962811] [2023-12-25 07:37:33,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450962811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:37:33,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:37:33,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:37:33,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393354042] [2023-12-25 07:37:33,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:37:33,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:37:33,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:37:33,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:37:33,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:37:33,469 INFO L87 Difference]: Start difference. First operand 124746 states and 157704 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2023-12-25 07:37:38,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:37:38,040 INFO L93 Difference]: Finished difference Result 323696 states and 406647 transitions. [2023-12-25 07:37:38,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:37:38,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2023-12-25 07:37:38,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:37:38,388 INFO L225 Difference]: With dead ends: 323696 [2023-12-25 07:37:38,388 INFO L226 Difference]: Without dead ends: 204517 [2023-12-25 07:37:38,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:37:38,442 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 53 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:37:38,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 223 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:37:38,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204517 states. [2023-12-25 07:37:44,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204517 to 204515. [2023-12-25 07:37:44,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204515 states, 204514 states have (on average 1.2379299216679542) internal successors, (253174), 204514 states have internal predecessors, (253174), 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) [2023-12-25 07:37:44,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204515 states to 204515 states and 253174 transitions. [2023-12-25 07:37:44,858 INFO L78 Accepts]: Start accepts. Automaton has 204515 states and 253174 transitions. Word has length 79 [2023-12-25 07:37:44,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:37:44,858 INFO L495 AbstractCegarLoop]: Abstraction has 204515 states and 253174 transitions. [2023-12-25 07:37:44,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2023-12-25 07:37:44,858 INFO L276 IsEmpty]: Start isEmpty. Operand 204515 states and 253174 transitions. [2023-12-25 07:37:44,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-25 07:37:44,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:37:44,864 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:37:44,866 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 (25)] Ended with exit code 0 [2023-12-25 07:37:45,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /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 [2023-12-25 07:37:45,065 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:37:45,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:37:45,065 INFO L85 PathProgramCache]: Analyzing trace with hash -942096605, now seen corresponding path program 1 times [2023-12-25 07:37:45,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:37:45,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063166195] [2023-12-25 07:37:45,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:37:45,066 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 [2023-12-25 07:37:45,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:37:45,067 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2023-12-25 07:37:45,068 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 (26)] Waiting until timeout for monitored process [2023-12-25 07:37:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:37:45,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:37:45,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:37:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:37:45,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:37:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:37:45,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:37:45,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063166195] [2023-12-25 07:37:45,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063166195] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:37:45,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:37:45,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:37:45,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604941360] [2023-12-25 07:37:45,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:37:45,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:37:45,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:37:45,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:37:45,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:37:45,950 INFO L87 Difference]: Start difference. First operand 204515 states and 253174 transitions. Second operand has 16 states, 16 states have (on average 9.1875) internal successors, (147), 16 states have internal predecessors, (147), 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)