/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_floodmax.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 07:27:37,448 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 07:27:37,500 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 07:27:37,513 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 07:27:37,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 07:27:37,534 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 07:27:37,535 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 07:27:37,535 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 07:27:37,536 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 07:27:37,536 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 07:27:37,536 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 07:27:37,537 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 07:27:37,537 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 07:27:37,538 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 07:27:37,538 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 07:27:37,538 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 07:27:37,539 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 07:27:37,539 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 07:27:37,539 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 07:27:37,539 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 07:27:37,545 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 07:27:37,546 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 07:27:37,546 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 07:27:37,547 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 07:27:37,550 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 07:27:37,551 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 07:27:37,551 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 07:27:37,552 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 07:27:37,552 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 07:27:37,552 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 07:27:37,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 07:27:37,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 07:27:37,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 07:27:37,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 07:27:37,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 07:27:37,554 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 07:27:37,554 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 07:27:37,554 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 07:27:37,554 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 07:27:37,554 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 07:27:37,554 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 07:27:37,555 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 07:27:37,555 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 07:27:37,555 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 07:27:37,555 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 07:27:37,555 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 07:27:37,556 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 07:27:37,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 07:27:37,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 07:27:37,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 07:27:37,783 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 07:27:37,783 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 07:27:37,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.BOUNDED-6.pals.c [2023-12-25 07:27:38,817 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 07:27:38,973 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 07:27:38,974 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.BOUNDED-6.pals.c [2023-12-25 07:27:38,984 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52704b6ee/f5269a1464a44d8b89415ef3adcdd33f/FLAGe0532b5e2 [2023-12-25 07:27:38,995 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52704b6ee/f5269a1464a44d8b89415ef3adcdd33f [2023-12-25 07:27:38,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 07:27:38,999 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 07:27:38,999 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 07:27:39,000 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 07:27:39,003 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 07:27:39,004 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:27:38" (1/1) ... [2023-12-25 07:27:39,005 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@205610eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:27:39, skipping insertion in model container [2023-12-25 07:27:39,005 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:27:38" (1/1) ... [2023-12-25 07:27:39,052 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 07:27:39,259 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_floodmax.3.ufo.BOUNDED-6.pals.c[12762,12775] [2023-12-25 07:27:39,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 07:27:39,279 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 07:27:39,339 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_floodmax.3.ufo.BOUNDED-6.pals.c[12762,12775] [2023-12-25 07:27:39,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 07:27:39,351 INFO L206 MainTranslator]: Completed translation [2023-12-25 07:27:39,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:27:39 WrapperNode [2023-12-25 07:27:39,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 07:27:39,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 07:27:39,353 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 07:27:39,353 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 07:27:39,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:27:39" (1/1) ... [2023-12-25 07:27:39,377 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:27:39" (1/1) ... [2023-12-25 07:27:39,414 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 423 [2023-12-25 07:27:39,415 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 07:27:39,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 07:27:39,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 07:27:39,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 07:27:39,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:27:39" (1/1) ... [2023-12-25 07:27:39,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:27:39" (1/1) ... [2023-12-25 07:27:39,433 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:27:39" (1/1) ... [2023-12-25 07:27:39,444 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 07:27:39,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:27:39" (1/1) ... [2023-12-25 07:27:39,445 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:27:39" (1/1) ... [2023-12-25 07:27:39,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:27:39" (1/1) ... [2023-12-25 07:27:39,455 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:27:39" (1/1) ... [2023-12-25 07:27:39,457 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:27:39" (1/1) ... [2023-12-25 07:27:39,459 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:27:39" (1/1) ... [2023-12-25 07:27:39,462 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 07:27:39,463 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 07:27:39,463 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 07:27:39,463 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 07:27:39,464 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:27:39" (1/1) ... [2023-12-25 07:27:39,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 07:27:39,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 07:27:39,505 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 07:27:39,529 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 07:27:39,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 07:27:39,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 07:27:39,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 07:27:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 07:27:39,646 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 07:27:39,649 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 07:27:40,035 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 07:27:40,064 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 07:27:40,064 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 07:27:40,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:27:40 BoogieIcfgContainer [2023-12-25 07:27:40,065 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 07:27:40,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 07:27:40,067 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 07:27:40,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 07:27:40,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 07:27:38" (1/3) ... [2023-12-25 07:27:40,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3159c188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:27:40, skipping insertion in model container [2023-12-25 07:27:40,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:27:39" (2/3) ... [2023-12-25 07:27:40,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3159c188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:27:40, skipping insertion in model container [2023-12-25 07:27:40,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:27:40" (3/3) ... [2023-12-25 07:27:40,073 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c [2023-12-25 07:27:40,087 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 07:27:40,088 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 07:27:40,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 07:27:40,130 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;@75b65072, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 07:27:40,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 07:27:40,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 112 states have (on average 1.8214285714285714) internal successors, (204), 113 states have internal predecessors, (204), 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 07:27:40,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-25 07:27:40,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:40,146 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] [2023-12-25 07:27:40,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:27:40,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:27:40,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1477667755, now seen corresponding path program 1 times [2023-12-25 07:27:40,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:27:40,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578624739] [2023-12-25 07:27:40,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:27:40,166 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 07:27:40,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:27:40,173 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 07:27:40,181 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 07:27:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:27:40,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-25 07:27:40,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:27:40,327 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 07:27:40,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:27:40,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:27:40,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578624739] [2023-12-25 07:27:40,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578624739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:27:40,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:27:40,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 07:27:40,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445924785] [2023-12-25 07:27:40,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:27:40,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-25 07:27:40,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:27:40,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-25 07:27:40,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 07:27:40,370 INFO L87 Difference]: Start difference. First operand has 114 states, 112 states have (on average 1.8214285714285714) internal successors, (204), 113 states have internal predecessors, (204), 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 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 07:27:40,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:27:40,404 INFO L93 Difference]: Finished difference Result 174 states and 308 transitions. [2023-12-25 07:27:40,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-25 07:27:40,406 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 34 [2023-12-25 07:27:40,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:27:40,413 INFO L225 Difference]: With dead ends: 174 [2023-12-25 07:27:40,413 INFO L226 Difference]: Without dead ends: 112 [2023-12-25 07:27:40,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 33 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 07:27:40,418 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:27:40,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:27:40,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-25 07:27:40,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-12-25 07:27:40,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.7927927927927927) internal successors, (199), 111 states have internal predecessors, (199), 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 07:27:40,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 199 transitions. [2023-12-25 07:27:40,446 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 199 transitions. Word has length 34 [2023-12-25 07:27:40,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:27:40,447 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 199 transitions. [2023-12-25 07:27:40,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 07:27:40,447 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 199 transitions. [2023-12-25 07:27:40,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-25 07:27:40,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:40,448 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] [2023-12-25 07:27:40,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-25 07:27:40,650 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 07:27:40,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:27:40,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:27:40,652 INFO L85 PathProgramCache]: Analyzing trace with hash -211275987, now seen corresponding path program 1 times [2023-12-25 07:27:40,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:27:40,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960084961] [2023-12-25 07:27:40,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:27:40,653 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 07:27:40,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:27:40,654 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 07:27:40,658 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 07:27:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:27:40,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:27:40,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:27:40,762 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 07:27:40,762 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:27:40,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:27:40,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960084961] [2023-12-25 07:27:40,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960084961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:27:40,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:27:40,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:27:40,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644474108] [2023-12-25 07:27:40,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:27:40,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:27:40,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:27:40,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:27:40,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:27:40,774 INFO L87 Difference]: Start difference. First operand 112 states and 199 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 07:27:40,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:27:40,841 INFO L93 Difference]: Finished difference Result 229 states and 400 transitions. [2023-12-25 07:27:40,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:27:40,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2023-12-25 07:27:40,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:27:40,843 INFO L225 Difference]: With dead ends: 229 [2023-12-25 07:27:40,843 INFO L226 Difference]: Without dead ends: 169 [2023-12-25 07:27:40,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 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 07:27:40,845 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 98 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:27:40,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 552 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:27:40,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-25 07:27:40,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 112. [2023-12-25 07:27:40,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.5495495495495495) internal successors, (172), 111 states have internal predecessors, (172), 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 07:27:40,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 172 transitions. [2023-12-25 07:27:40,852 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 172 transitions. Word has length 34 [2023-12-25 07:27:40,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:27:40,852 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 172 transitions. [2023-12-25 07:27:40,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 07:27:40,852 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 172 transitions. [2023-12-25 07:27:40,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-25 07:27:40,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:40,859 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:27:40,884 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 07:27:41,064 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 07:27:41,065 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:27:41,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:27:41,065 INFO L85 PathProgramCache]: Analyzing trace with hash -985754314, now seen corresponding path program 1 times [2023-12-25 07:27:41,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:27:41,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684009557] [2023-12-25 07:27:41,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:27:41,066 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 07:27:41,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:27:41,069 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 07:27:41,088 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 07:27:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:27:41,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:27:41,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:27:41,235 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 07:27:41,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:27:41,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:27:41,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684009557] [2023-12-25 07:27:41,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684009557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:27:41,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:27:41,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:27:41,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845604037] [2023-12-25 07:27:41,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:27:41,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:27:41,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:27:41,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:27:41,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:27:41,237 INFO L87 Difference]: Start difference. First operand 112 states and 172 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 07:27:41,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:27:41,267 INFO L93 Difference]: Finished difference Result 217 states and 353 transitions. [2023-12-25 07:27:41,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:27:41,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2023-12-25 07:27:41,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:27:41,269 INFO L225 Difference]: With dead ends: 217 [2023-12-25 07:27:41,269 INFO L226 Difference]: Without dead ends: 160 [2023-12-25 07:27:41,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 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 07:27:41,270 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 74 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:27:41,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 363 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:27:41,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-25 07:27:41,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2023-12-25 07:27:41,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.5796178343949046) internal successors, (248), 157 states have internal predecessors, (248), 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 07:27:41,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 248 transitions. [2023-12-25 07:27:41,283 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 248 transitions. Word has length 60 [2023-12-25 07:27:41,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:27:41,284 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 248 transitions. [2023-12-25 07:27:41,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 07:27:41,287 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 248 transitions. [2023-12-25 07:27:41,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-25 07:27:41,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:41,290 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:27:41,294 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 07:27:41,493 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 07:27:41,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:27:41,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:27:41,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1305875761, now seen corresponding path program 1 times [2023-12-25 07:27:41,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:27:41,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138542880] [2023-12-25 07:27:41,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:27:41,495 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 07:27:41,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:27:41,497 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 07:27:41,523 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 07:27:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:27:41,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:27:41,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:27:41,604 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 07:27:41,604 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:27:41,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:27:41,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138542880] [2023-12-25 07:27:41,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138542880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:27:41,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:27:41,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:27:41,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930940894] [2023-12-25 07:27:41,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:27:41,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:27:41,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:27:41,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:27:41,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:27:41,607 INFO L87 Difference]: Start difference. First operand 158 states and 248 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 07:27:41,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:27:41,621 INFO L93 Difference]: Finished difference Result 263 states and 429 transitions. [2023-12-25 07:27:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:27:41,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2023-12-25 07:27:41,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:27:41,623 INFO L225 Difference]: With dead ends: 263 [2023-12-25 07:27:41,623 INFO L226 Difference]: Without dead ends: 206 [2023-12-25 07:27:41,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 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 07:27:41,624 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 83 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 389 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 07:27:41,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 389 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:27:41,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-12-25 07:27:41,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2023-12-25 07:27:41,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.6108374384236452) internal successors, (327), 203 states have internal predecessors, (327), 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 07:27:41,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 327 transitions. [2023-12-25 07:27:41,631 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 327 transitions. Word has length 62 [2023-12-25 07:27:41,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:27:41,631 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 327 transitions. [2023-12-25 07:27:41,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 07:27:41,631 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 327 transitions. [2023-12-25 07:27:41,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-25 07:27:41,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:41,632 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:27:41,651 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 07:27:41,835 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 07:27:41,835 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:27:41,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:27:41,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1944934066, now seen corresponding path program 1 times [2023-12-25 07:27:41,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:27:41,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864602407] [2023-12-25 07:27:41,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:27:41,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:27:41,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:27:41,856 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 07:27:41,893 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 07:27:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:27:41,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:27:41,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:27:42,026 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 07:27:42,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:27:42,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:27:42,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864602407] [2023-12-25 07:27:42,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864602407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:27:42,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:27:42,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:27:42,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794417973] [2023-12-25 07:27:42,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:27:42,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:27:42,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:27:42,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:27:42,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:27:42,028 INFO L87 Difference]: Start difference. First operand 204 states and 327 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 07:27:42,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:27:42,046 INFO L93 Difference]: Finished difference Result 477 states and 792 transitions. [2023-12-25 07:27:42,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:27:42,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2023-12-25 07:27:42,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:27:42,049 INFO L225 Difference]: With dead ends: 477 [2023-12-25 07:27:42,049 INFO L226 Difference]: Without dead ends: 330 [2023-12-25 07:27:42,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 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 07:27:42,053 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 76 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:27:42,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 376 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:27:42,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-12-25 07:27:42,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2023-12-25 07:27:42,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.6391437308868502) internal successors, (536), 327 states have internal predecessors, (536), 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 07:27:42,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 536 transitions. [2023-12-25 07:27:42,071 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 536 transitions. Word has length 62 [2023-12-25 07:27:42,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:27:42,072 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 536 transitions. [2023-12-25 07:27:42,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 07:27:42,073 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 536 transitions. [2023-12-25 07:27:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-25 07:27:42,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:42,080 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:27:42,095 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 07:27:42,283 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 07:27:42,283 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:27:42,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:27:42,284 INFO L85 PathProgramCache]: Analyzing trace with hash -386894903, now seen corresponding path program 1 times [2023-12-25 07:27:42,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:27:42,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902110706] [2023-12-25 07:27:42,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:27:42,284 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 07:27:42,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:27:42,288 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 07:27:42,293 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 07:27:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:27:42,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:27:42,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:27:42,417 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 07:27:42,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:27:42,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:27:42,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902110706] [2023-12-25 07:27:42,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902110706] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:27:42,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:27:42,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:27:42,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260801829] [2023-12-25 07:27:42,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:27:42,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:27:42,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:27:42,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:27:42,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:27:42,419 INFO L87 Difference]: Start difference. First operand 328 states and 536 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 07:27:42,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:27:42,437 INFO L93 Difference]: Finished difference Result 595 states and 989 transitions. [2023-12-25 07:27:42,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:27:42,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2023-12-25 07:27:42,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:27:42,440 INFO L225 Difference]: With dead ends: 595 [2023-12-25 07:27:42,440 INFO L226 Difference]: Without dead ends: 448 [2023-12-25 07:27:42,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 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 07:27:42,443 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 77 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 381 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 07:27:42,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 381 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:27:42,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-12-25 07:27:42,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 446. [2023-12-25 07:27:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.644943820224719) internal successors, (732), 445 states have internal predecessors, (732), 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 07:27:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 732 transitions. [2023-12-25 07:27:42,453 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 732 transitions. Word has length 64 [2023-12-25 07:27:42,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:27:42,454 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 732 transitions. [2023-12-25 07:27:42,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 07:27:42,454 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 732 transitions. [2023-12-25 07:27:42,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-25 07:27:42,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:42,454 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:27:42,460 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 07:27:42,657 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 07:27:42,658 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:27:42,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:27:42,658 INFO L85 PathProgramCache]: Analyzing trace with hash 892182118, now seen corresponding path program 1 times [2023-12-25 07:27:42,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:27:42,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494913676] [2023-12-25 07:27:42,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:27:42,659 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 07:27:42,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:27:42,666 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 07:27:42,668 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 07:27:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:27:42,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:27:42,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:27:42,780 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 07:27:42,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:27:42,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:27:42,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494913676] [2023-12-25 07:27:42,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494913676] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:27:42,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:27:42,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:27:42,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548797924] [2023-12-25 07:27:42,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:27:42,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:27:42,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:27:42,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:27:42,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:27:42,782 INFO L87 Difference]: Start difference. First operand 446 states and 732 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 07:27:42,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:27:42,800 INFO L93 Difference]: Finished difference Result 1149 states and 1913 transitions. [2023-12-25 07:27:42,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:27:42,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2023-12-25 07:27:42,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:27:42,804 INFO L225 Difference]: With dead ends: 1149 [2023-12-25 07:27:42,804 INFO L226 Difference]: Without dead ends: 766 [2023-12-25 07:27:42,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 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 07:27:42,806 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 70 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:27:42,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 369 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:27:42,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2023-12-25 07:27:42,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 764. [2023-12-25 07:27:42,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 763 states have (on average 1.6435124508519003) internal successors, (1254), 763 states have internal predecessors, (1254), 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 07:27:42,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1254 transitions. [2023-12-25 07:27:42,820 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1254 transitions. Word has length 64 [2023-12-25 07:27:42,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:27:42,821 INFO L495 AbstractCegarLoop]: Abstraction has 764 states and 1254 transitions. [2023-12-25 07:27:42,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 07:27:42,821 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1254 transitions. [2023-12-25 07:27:42,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-25 07:27:42,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:42,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:27:42,824 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 07:27:43,024 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 07:27:43,024 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:27:43,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:27:43,025 INFO L85 PathProgramCache]: Analyzing trace with hash 539603809, now seen corresponding path program 1 times [2023-12-25 07:27:43,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:27:43,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179775280] [2023-12-25 07:27:43,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:27:43,025 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 07:27:43,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:27:43,027 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 07:27:43,030 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 07:27:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:27:43,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:27:43,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:27:43,130 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 07:27:43,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:27:43,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:27:43,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179775280] [2023-12-25 07:27:43,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179775280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:27:43,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:27:43,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:27:43,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398774903] [2023-12-25 07:27:43,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:27:43,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:27:43,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:27:43,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:27:43,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:27:43,135 INFO L87 Difference]: Start difference. First operand 764 states and 1254 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 07:27:43,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:27:43,158 INFO L93 Difference]: Finished difference Result 1437 states and 2381 transitions. [2023-12-25 07:27:43,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:27:43,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2023-12-25 07:27:43,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:27:43,162 INFO L225 Difference]: With dead ends: 1437 [2023-12-25 07:27:43,162 INFO L226 Difference]: Without dead ends: 1054 [2023-12-25 07:27:43,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 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 07:27:43,164 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 71 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 373 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 07:27:43,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 373 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:27:43,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2023-12-25 07:27:43,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1052. [2023-12-25 07:27:43,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1051 states have (on average 1.637488106565176) internal successors, (1721), 1051 states have internal predecessors, (1721), 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 07:27:43,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1721 transitions. [2023-12-25 07:27:43,184 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1721 transitions. Word has length 66 [2023-12-25 07:27:43,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:27:43,185 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1721 transitions. [2023-12-25 07:27:43,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 07:27:43,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1721 transitions. [2023-12-25 07:27:43,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-25 07:27:43,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:43,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:27:43,203 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 07:27:43,388 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 07:27:43,389 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:27:43,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:27:43,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1422478210, now seen corresponding path program 1 times [2023-12-25 07:27:43,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:27:43,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708843786] [2023-12-25 07:27:43,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:27:43,390 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 07:27:43,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:27:43,391 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 07:27:43,392 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 07:27:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:27:43,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:27:43,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:27:43,730 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 07:27:43,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:27:43,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:27:43,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708843786] [2023-12-25 07:27:43,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708843786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:27:43,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:27:43,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 07:27:43,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127161368] [2023-12-25 07:27:43,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:27:43,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:27:43,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:27:43,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:27:43,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:27:43,733 INFO L87 Difference]: Start difference. First operand 1052 states and 1721 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 07:27:43,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:27:43,840 INFO L93 Difference]: Finished difference Result 4018 states and 6693 transitions. [2023-12-25 07:27:43,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:27:43,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 66 [2023-12-25 07:27:43,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:27:43,849 INFO L225 Difference]: With dead ends: 4018 [2023-12-25 07:27:43,849 INFO L226 Difference]: Without dead ends: 3035 [2023-12-25 07:27:43,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:27:43,851 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 427 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:27:43,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 487 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:27:43,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2023-12-25 07:27:43,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 2573. [2023-12-25 07:27:43,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2573 states, 2572 states have (on average 1.6345256609642302) internal successors, (4204), 2572 states have internal predecessors, (4204), 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 07:27:43,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 4204 transitions. [2023-12-25 07:27:43,903 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 4204 transitions. Word has length 66 [2023-12-25 07:27:43,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:27:43,903 INFO L495 AbstractCegarLoop]: Abstraction has 2573 states and 4204 transitions. [2023-12-25 07:27:43,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 07:27:43,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 4204 transitions. [2023-12-25 07:27:43,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-25 07:27:43,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:43,904 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:27:43,909 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 07:27:44,107 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 07:27:44,107 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:27:44,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:27:44,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1209872637, now seen corresponding path program 1 times [2023-12-25 07:27:44,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:27:44,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311379403] [2023-12-25 07:27:44,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:27:44,108 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 07:27:44,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:27:44,109 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 07:27:44,133 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 07:27:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:27:44,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:27:44,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:27:44,272 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 07:27:44,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:27:44,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:27:44,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311379403] [2023-12-25 07:27:44,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311379403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:27:44,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:27:44,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:27:44,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861436560] [2023-12-25 07:27:44,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:27:44,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:27:44,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:27:44,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:27:44,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:27:44,273 INFO L87 Difference]: Start difference. First operand 2573 states and 4204 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 07:27:44,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:27:44,366 INFO L93 Difference]: Finished difference Result 7124 states and 11772 transitions. [2023-12-25 07:27:44,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:27:44,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 67 [2023-12-25 07:27:44,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:27:44,415 INFO L225 Difference]: With dead ends: 7124 [2023-12-25 07:27:44,415 INFO L226 Difference]: Without dead ends: 4620 [2023-12-25 07:27:44,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:27:44,418 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 251 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:27:44,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 399 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:27:44,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4620 states. [2023-12-25 07:27:44,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4620 to 4139. [2023-12-25 07:27:44,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4139 states, 4138 states have (on average 1.6355727404543257) internal successors, (6768), 4138 states have internal predecessors, (6768), 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 07:27:44,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4139 states to 4139 states and 6768 transitions. [2023-12-25 07:27:44,515 INFO L78 Accepts]: Start accepts. Automaton has 4139 states and 6768 transitions. Word has length 67 [2023-12-25 07:27:44,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:27:44,515 INFO L495 AbstractCegarLoop]: Abstraction has 4139 states and 6768 transitions. [2023-12-25 07:27:44,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 07:27:44,515 INFO L276 IsEmpty]: Start isEmpty. Operand 4139 states and 6768 transitions. [2023-12-25 07:27:44,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-25 07:27:44,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:44,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:27:44,535 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 07:27:44,718 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 07:27:44,720 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:27:44,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:27:44,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1091384583, now seen corresponding path program 1 times [2023-12-25 07:27:44,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:27:44,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560936433] [2023-12-25 07:27:44,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:27:44,721 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 07:27:44,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:27:44,733 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 07:27:44,733 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 07:27:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:27:44,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:27:44,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:27:44,884 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 07:27:44,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:27:44,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:27:44,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560936433] [2023-12-25 07:27:44,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560936433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:27:44,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:27:44,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:27:44,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343463732] [2023-12-25 07:27:44,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:27:44,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:27:44,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:27:44,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:27:44,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:27:44,885 INFO L87 Difference]: Start difference. First operand 4139 states and 6768 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 07:27:45,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:27:45,020 INFO L93 Difference]: Finished difference Result 10974 states and 18036 transitions. [2023-12-25 07:27:45,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:27:45,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-25 07:27:45,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:27:45,042 INFO L225 Difference]: With dead ends: 10974 [2023-12-25 07:27:45,042 INFO L226 Difference]: Without dead ends: 6904 [2023-12-25 07:27:45,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:27:45,050 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 174 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:27:45,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 539 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:27:45,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6904 states. [2023-12-25 07:27:45,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6904 to 6413. [2023-12-25 07:27:45,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6413 states, 6412 states have (on average 1.6247660636306924) internal successors, (10418), 6412 states have internal predecessors, (10418), 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 07:27:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6413 states to 6413 states and 10418 transitions. [2023-12-25 07:27:45,260 INFO L78 Accepts]: Start accepts. Automaton has 6413 states and 10418 transitions. Word has length 68 [2023-12-25 07:27:45,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:27:45,260 INFO L495 AbstractCegarLoop]: Abstraction has 6413 states and 10418 transitions. [2023-12-25 07:27:45,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 07:27:45,261 INFO L276 IsEmpty]: Start isEmpty. Operand 6413 states and 10418 transitions. [2023-12-25 07:27:45,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-25 07:27:45,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:45,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:27:45,265 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 07:27:45,463 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 07:27:45,464 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:27:45,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:27:45,465 INFO L85 PathProgramCache]: Analyzing trace with hash -578633876, now seen corresponding path program 1 times [2023-12-25 07:27:45,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:27:45,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453874973] [2023-12-25 07:27:45,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:27:45,465 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 07:27:45,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:27:45,466 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 07:27:45,479 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 07:27:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:27:45,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:27:45,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:27:45,626 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 07:27:45,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:27:45,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:27:45,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453874973] [2023-12-25 07:27:45,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453874973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:27:45,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:27:45,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:27:45,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894650929] [2023-12-25 07:27:45,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:27:45,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:27:45,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:27:45,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:27:45,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:27:45,627 INFO L87 Difference]: Start difference. First operand 6413 states and 10418 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 07:27:45,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:27:45,794 INFO L93 Difference]: Finished difference Result 18879 states and 30673 transitions. [2023-12-25 07:27:45,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:27:45,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 69 [2023-12-25 07:27:45,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:27:45,824 INFO L225 Difference]: With dead ends: 18879 [2023-12-25 07:27:45,824 INFO L226 Difference]: Without dead ends: 12535 [2023-12-25 07:27:45,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:27:45,834 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 173 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:27:45,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 541 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:27:45,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12535 states. [2023-12-25 07:27:46,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12535 to 9431. [2023-12-25 07:27:46,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9431 states, 9430 states have (on average 1.6093319194061506) internal successors, (15176), 9430 states have internal predecessors, (15176), 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 07:27:46,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9431 states to 9431 states and 15176 transitions. [2023-12-25 07:27:46,057 INFO L78 Accepts]: Start accepts. Automaton has 9431 states and 15176 transitions. Word has length 69 [2023-12-25 07:27:46,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:27:46,057 INFO L495 AbstractCegarLoop]: Abstraction has 9431 states and 15176 transitions. [2023-12-25 07:27:46,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 07:27:46,057 INFO L276 IsEmpty]: Start isEmpty. Operand 9431 states and 15176 transitions. [2023-12-25 07:27:46,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-25 07:27:46,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:46,058 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:27:46,070 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 07:27:46,261 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 07:27:46,261 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:27:46,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:27:46,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1920185732, now seen corresponding path program 1 times [2023-12-25 07:27:46,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:27:46,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459412204] [2023-12-25 07:27:46,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:27:46,262 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 07:27:46,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:27:46,263 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 07:27:46,307 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 07:27:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:27:46,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:27:46,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:27:46,499 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 07:27:46,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:27:46,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:27:46,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459412204] [2023-12-25 07:27:46,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459412204] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:27:46,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:27:46,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 07:27:46,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046474174] [2023-12-25 07:27:46,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:27:46,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:27:46,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:27:46,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:27:46,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:27:46,501 INFO L87 Difference]: Start difference. First operand 9431 states and 15176 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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 07:27:46,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:27:46,730 INFO L93 Difference]: Finished difference Result 25081 states and 40688 transitions. [2023-12-25 07:27:46,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:27:46,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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 07:27:46,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:27:46,764 INFO L225 Difference]: With dead ends: 25081 [2023-12-25 07:27:46,764 INFO L226 Difference]: Without dead ends: 15719 [2023-12-25 07:27:46,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:27:46,782 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 332 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:27:46,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 609 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:27:46,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15719 states. [2023-12-25 07:27:47,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15719 to 14939. [2023-12-25 07:27:47,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14939 states, 14938 states have (on average 1.6084482527781496) internal successors, (24027), 14938 states have internal predecessors, (24027), 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 07:27:47,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14939 states to 14939 states and 24027 transitions. [2023-12-25 07:27:47,150 INFO L78 Accepts]: Start accepts. Automaton has 14939 states and 24027 transitions. Word has length 74 [2023-12-25 07:27:47,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:27:47,150 INFO L495 AbstractCegarLoop]: Abstraction has 14939 states and 24027 transitions. [2023-12-25 07:27:47,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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 07:27:47,151 INFO L276 IsEmpty]: Start isEmpty. Operand 14939 states and 24027 transitions. [2023-12-25 07:27:47,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-25 07:27:47,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:47,151 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, 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 07:27:47,160 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 07:27:47,354 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 07:27:47,354 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:27:47,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:27:47,355 INFO L85 PathProgramCache]: Analyzing trace with hash -618303701, now seen corresponding path program 1 times [2023-12-25 07:27:47,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:27:47,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307042140] [2023-12-25 07:27:47,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:27:47,355 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 07:27:47,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:27:47,356 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 07:27:47,385 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 07:27:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:27:47,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 07:27:47,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:27:47,433 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 07:27:47,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:27:47,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:27:47,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307042140] [2023-12-25 07:27:47,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307042140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:27:47,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:27:47,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:27:47,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869422229] [2023-12-25 07:27:47,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:27:47,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:27:47,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:27:47,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:27:47,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:27:47,435 INFO L87 Difference]: Start difference. First operand 14939 states and 24027 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 07:27:47,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:27:47,554 INFO L93 Difference]: Finished difference Result 16045 states and 25500 transitions. [2023-12-25 07:27:47,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:27:47,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 07:27:47,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:27:47,587 INFO L225 Difference]: With dead ends: 16045 [2023-12-25 07:27:47,588 INFO L226 Difference]: Without dead ends: 16043 [2023-12-25 07:27:47,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 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 07:27:47,597 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:27:47,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 491 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:27:47,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16043 states. [2023-12-25 07:27:47,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16043 to 15675. [2023-12-25 07:27:47,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15675 states, 15674 states have (on average 1.579303304836034) internal successors, (24754), 15674 states have internal predecessors, (24754), 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 07:27:47,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15675 states to 15675 states and 24754 transitions. [2023-12-25 07:27:47,987 INFO L78 Accepts]: Start accepts. Automaton has 15675 states and 24754 transitions. Word has length 75 [2023-12-25 07:27:47,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:27:47,987 INFO L495 AbstractCegarLoop]: Abstraction has 15675 states and 24754 transitions. [2023-12-25 07:27:47,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 07:27:47,987 INFO L276 IsEmpty]: Start isEmpty. Operand 15675 states and 24754 transitions. [2023-12-25 07:27:47,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-25 07:27:47,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:47,989 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:27:48,008 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 (15)] Ended with exit code 0 [2023-12-25 07:27:48,192 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 07:27:48,192 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:27:48,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:27:48,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2029578417, now seen corresponding path program 1 times [2023-12-25 07:27:48,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:27:48,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492750338] [2023-12-25 07:27:48,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:27:48,194 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 07:27:48,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:27:48,209 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 07:27:48,245 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 07:27:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:27:48,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:27:48,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:27:48,395 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 07:27:48,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:27:48,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:27:48,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492750338] [2023-12-25 07:27:48,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492750338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:27:48,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:27:48,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:27:48,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950211426] [2023-12-25 07:27:48,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:27:48,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:27:48,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:27:48,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:27:48,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:27:48,397 INFO L87 Difference]: Start difference. First operand 15675 states and 24754 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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 07:27:48,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:27:48,659 INFO L93 Difference]: Finished difference Result 46830 states and 73879 transitions. [2023-12-25 07:27:48,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:27:48,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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 99 [2023-12-25 07:27:48,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:27:48,721 INFO L225 Difference]: With dead ends: 46830 [2023-12-25 07:27:48,722 INFO L226 Difference]: Without dead ends: 31171 [2023-12-25 07:27:48,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:27:48,754 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 187 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:27:48,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 412 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:27:48,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31171 states. [2023-12-25 07:27:49,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31171 to 31169. [2023-12-25 07:27:49,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31169 states, 31168 states have (on average 1.5639758726899384) internal successors, (48746), 31168 states have internal predecessors, (48746), 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 07:27:49,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31169 states to 31169 states and 48746 transitions. [2023-12-25 07:27:49,424 INFO L78 Accepts]: Start accepts. Automaton has 31169 states and 48746 transitions. Word has length 99 [2023-12-25 07:27:49,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:27:49,425 INFO L495 AbstractCegarLoop]: Abstraction has 31169 states and 48746 transitions. [2023-12-25 07:27:49,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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 07:27:49,425 INFO L276 IsEmpty]: Start isEmpty. Operand 31169 states and 48746 transitions. [2023-12-25 07:27:49,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-25 07:27:49,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:49,429 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, 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 07:27:49,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-25 07:27:49,633 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 07:27:49,633 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:27:49,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:27:49,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1881455852, now seen corresponding path program 1 times [2023-12-25 07:27:49,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:27:49,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646724146] [2023-12-25 07:27:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:27:49,634 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 07:27:49,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:27:49,635 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 07:27:49,637 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 07:27:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:27:49,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:27:49,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:27:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:27:49,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:27:49,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:27:49,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646724146] [2023-12-25 07:27:49,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646724146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:27:49,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:27:49,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:27:49,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852548779] [2023-12-25 07:27:49,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:27:49,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:27:49,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:27:49,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:27:49,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:27:49,761 INFO L87 Difference]: Start difference. First operand 31169 states and 48746 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 07:27:50,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:27:50,176 INFO L93 Difference]: Finished difference Result 57367 states and 90280 transitions. [2023-12-25 07:27:50,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:27:50,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 99 [2023-12-25 07:27:50,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:27:50,322 INFO L225 Difference]: With dead ends: 57367 [2023-12-25 07:27:50,322 INFO L226 Difference]: Without dead ends: 26323 [2023-12-25 07:27:50,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 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 07:27:50,345 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 63 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 365 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 07:27:50,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 365 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:27:50,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26323 states. [2023-12-25 07:27:50,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26323 to 26311. [2023-12-25 07:27:50,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26311 states, 26310 states have (on average 1.571455720258457) internal successors, (41345), 26310 states have internal predecessors, (41345), 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 07:27:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26311 states to 26311 states and 41345 transitions. [2023-12-25 07:27:50,839 INFO L78 Accepts]: Start accepts. Automaton has 26311 states and 41345 transitions. Word has length 99 [2023-12-25 07:27:50,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:27:50,840 INFO L495 AbstractCegarLoop]: Abstraction has 26311 states and 41345 transitions. [2023-12-25 07:27:50,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 07:27:50,840 INFO L276 IsEmpty]: Start isEmpty. Operand 26311 states and 41345 transitions. [2023-12-25 07:27:50,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-25 07:27:50,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:50,842 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:27:50,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-25 07:27:51,045 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 07:27:51,046 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:27:51,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:27:51,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1995460225, now seen corresponding path program 1 times [2023-12-25 07:27:51,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:27:51,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617544888] [2023-12-25 07:27:51,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:27:51,047 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 07:27:51,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:27:51,048 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 07:27:51,051 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 07:27:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:27:51,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:27:51,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:27:51,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 07:27:51,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:27:51,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:27:51,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617544888] [2023-12-25 07:27:51,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617544888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:27:51,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:27:51,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:27:51,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411578280] [2023-12-25 07:27:51,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:27:51,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:27:51,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:27:51,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:27:51,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:27:51,209 INFO L87 Difference]: Start difference. First operand 26311 states and 41345 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 07:27:51,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:27:51,793 INFO L93 Difference]: Finished difference Result 78557 states and 123297 transitions. [2023-12-25 07:27:51,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:27:51,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 100 [2023-12-25 07:27:51,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:27:51,904 INFO L225 Difference]: With dead ends: 78557 [2023-12-25 07:27:51,905 INFO L226 Difference]: Without dead ends: 52269 [2023-12-25 07:27:51,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:27:51,931 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 167 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:27:51,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 420 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:27:51,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52269 states. [2023-12-25 07:27:52,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52269 to 52267. [2023-12-25 07:27:52,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52267 states, 52266 states have (on average 1.5549496804806184) internal successors, (81271), 52266 states have internal predecessors, (81271), 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 07:27:52,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52267 states to 52267 states and 81271 transitions. [2023-12-25 07:27:52,972 INFO L78 Accepts]: Start accepts. Automaton has 52267 states and 81271 transitions. Word has length 100 [2023-12-25 07:27:52,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:27:52,974 INFO L495 AbstractCegarLoop]: Abstraction has 52267 states and 81271 transitions. [2023-12-25 07:27:52,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 07:27:52,974 INFO L276 IsEmpty]: Start isEmpty. Operand 52267 states and 81271 transitions. [2023-12-25 07:27:52,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-25 07:27:52,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:52,978 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:27:52,981 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 07:27:53,182 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 07:27:53,182 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:27:53,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:27:53,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1366395817, now seen corresponding path program 1 times [2023-12-25 07:27:53,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:27:53,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62863572] [2023-12-25 07:27:53,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:27:53,183 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 07:27:53,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:27:53,184 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 07:27:53,187 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 07:27:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:27:53,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:27:53,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:27:53,332 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 07:27:53,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:27:53,333 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:27:53,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62863572] [2023-12-25 07:27:53,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62863572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:27:53,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:27:53,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:27:53,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074901947] [2023-12-25 07:27:53,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:27:53,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:27:53,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:27:53,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:27:53,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:27:53,334 INFO L87 Difference]: Start difference. First operand 52267 states and 81271 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 07:27:54,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:27:54,302 INFO L93 Difference]: Finished difference Result 110979 states and 171925 transitions. [2023-12-25 07:27:54,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:27:54,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 101 [2023-12-25 07:27:54,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:27:54,405 INFO L225 Difference]: With dead ends: 110979 [2023-12-25 07:27:54,406 INFO L226 Difference]: Without dead ends: 59001 [2023-12-25 07:27:54,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 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 07:27:54,461 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 87 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:27:54,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 482 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:27:54,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59001 states. [2023-12-25 07:27:55,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59001 to 57715. [2023-12-25 07:27:55,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57715 states, 57714 states have (on average 1.5337526423398136) internal successors, (88519), 57714 states have internal predecessors, (88519), 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 07:27:55,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57715 states to 57715 states and 88519 transitions. [2023-12-25 07:27:55,711 INFO L78 Accepts]: Start accepts. Automaton has 57715 states and 88519 transitions. Word has length 101 [2023-12-25 07:27:55,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:27:55,711 INFO L495 AbstractCegarLoop]: Abstraction has 57715 states and 88519 transitions. [2023-12-25 07:27:55,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 07:27:55,712 INFO L276 IsEmpty]: Start isEmpty. Operand 57715 states and 88519 transitions. [2023-12-25 07:27:55,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-25 07:27:55,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:55,714 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:27:55,734 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 07:27:55,917 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 07:27:55,917 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:27:55,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:27:55,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1414087019, now seen corresponding path program 1 times [2023-12-25 07:27:55,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:27:55,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947449563] [2023-12-25 07:27:55,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:27:55,919 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 07:27:55,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:27:55,920 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 07:27:55,927 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 07:27:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:27:56,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:27:56,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:27:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 07:27:56,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:27:56,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:27:56,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947449563] [2023-12-25 07:27:56,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947449563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:27:56,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:27:56,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:27:56,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540261005] [2023-12-25 07:27:56,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:27:56,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:27:56,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:27:56,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:27:56,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:27:56,106 INFO L87 Difference]: Start difference. First operand 57715 states and 88519 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 07:27:57,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:27:57,309 INFO L93 Difference]: Finished difference Result 172564 states and 264398 transitions. [2023-12-25 07:27:57,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:27:57,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 101 [2023-12-25 07:27:57,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:27:57,532 INFO L225 Difference]: With dead ends: 172564 [2023-12-25 07:27:57,532 INFO L226 Difference]: Without dead ends: 114857 [2023-12-25 07:27:57,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:27:57,570 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 208 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:27:57,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 412 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:27:57,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114857 states. [2023-12-25 07:27:59,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114857 to 114855. [2023-12-25 07:27:59,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114855 states, 114854 states have (on average 1.5200254235812423) internal successors, (174581), 114854 states have internal predecessors, (174581), 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 07:27:59,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114855 states to 114855 states and 174581 transitions. [2023-12-25 07:27:59,809 INFO L78 Accepts]: Start accepts. Automaton has 114855 states and 174581 transitions. Word has length 101 [2023-12-25 07:27:59,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:27:59,810 INFO L495 AbstractCegarLoop]: Abstraction has 114855 states and 174581 transitions. [2023-12-25 07:27:59,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 07:27:59,810 INFO L276 IsEmpty]: Start isEmpty. Operand 114855 states and 174581 transitions. [2023-12-25 07:27:59,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-25 07:27:59,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:27:59,814 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, 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 07:27:59,817 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 (20)] Ended with exit code 0 [2023-12-25 07:28:00,016 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 07:28:00,017 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:28:00,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:28:00,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1804002544, now seen corresponding path program 1 times [2023-12-25 07:28:00,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:28:00,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324110475] [2023-12-25 07:28:00,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:28:00,018 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 07:28:00,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:28:00,020 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 07:28:00,021 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 07:28:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:28:00,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:28:00,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:28:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:28:00,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:28:00,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:28:00,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324110475] [2023-12-25 07:28:00,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324110475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:28:00,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:28:00,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:28:00,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58712185] [2023-12-25 07:28:00,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:28:00,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:28:00,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:28:00,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:28:00,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:28:00,124 INFO L87 Difference]: Start difference. First operand 114855 states and 174581 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 07:28:01,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:28:01,078 INFO L93 Difference]: Finished difference Result 157403 states and 240575 transitions. [2023-12-25 07:28:01,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:28:01,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2023-12-25 07:28:01,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:28:01,158 INFO L225 Difference]: With dead ends: 157403 [2023-12-25 07:28:01,159 INFO L226 Difference]: Without dead ends: 48957 [2023-12-25 07:28:01,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 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 07:28:01,204 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 53 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 338 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 07:28:01,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 338 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:28:01,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48957 states. [2023-12-25 07:28:02,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48957 to 48955. [2023-12-25 07:28:02,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48955 states, 48954 states have (on average 1.5078849532213916) internal successors, (73817), 48954 states have internal predecessors, (73817), 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 07:28:02,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48955 states to 48955 states and 73817 transitions. [2023-12-25 07:28:02,339 INFO L78 Accepts]: Start accepts. Automaton has 48955 states and 73817 transitions. Word has length 101 [2023-12-25 07:28:02,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:28:02,339 INFO L495 AbstractCegarLoop]: Abstraction has 48955 states and 73817 transitions. [2023-12-25 07:28:02,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 07:28:02,339 INFO L276 IsEmpty]: Start isEmpty. Operand 48955 states and 73817 transitions. [2023-12-25 07:28:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-25 07:28:02,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:28:02,342 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:28:02,350 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 07:28:02,545 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 07:28:02,545 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:28:02,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:28:02,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1017344601, now seen corresponding path program 1 times [2023-12-25 07:28:02,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:28:02,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313577919] [2023-12-25 07:28:02,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:28:02,546 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 07:28:02,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:28:02,548 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 07:28:02,549 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 07:28:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:28:02,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:28:02,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:28:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 07:28:02,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:28:02,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:28:02,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313577919] [2023-12-25 07:28:02,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313577919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:28:02,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:28:02,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:28:02,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487490240] [2023-12-25 07:28:02,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:28:02,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:28:02,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:28:02,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:28:02,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:28:02,707 INFO L87 Difference]: Start difference. First operand 48955 states and 73817 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 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 07:28:03,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:28:03,731 INFO L93 Difference]: Finished difference Result 146217 states and 220198 transitions. [2023-12-25 07:28:03,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:28:03,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 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 102 [2023-12-25 07:28:03,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:28:03,885 INFO L225 Difference]: With dead ends: 146217 [2023-12-25 07:28:03,886 INFO L226 Difference]: Without dead ends: 97335 [2023-12-25 07:28:03,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:28:03,932 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 169 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:28:03,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 463 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:28:04,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97335 states. [2023-12-25 07:28:05,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97335 to 97333. [2023-12-25 07:28:05,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97333 states, 97332 states have (on average 1.4914930341511528) internal successors, (145170), 97332 states have internal predecessors, (145170), 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 07:28:05,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97333 states to 97333 states and 145170 transitions. [2023-12-25 07:28:05,965 INFO L78 Accepts]: Start accepts. Automaton has 97333 states and 145170 transitions. Word has length 102 [2023-12-25 07:28:05,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:28:05,965 INFO L495 AbstractCegarLoop]: Abstraction has 97333 states and 145170 transitions. [2023-12-25 07:28:05,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 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 07:28:05,965 INFO L276 IsEmpty]: Start isEmpty. Operand 97333 states and 145170 transitions. [2023-12-25 07:28:05,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-25 07:28:05,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:28:05,972 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:28:05,990 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 07:28:06,175 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 07:28:06,175 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:28:06,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:28:06,176 INFO L85 PathProgramCache]: Analyzing trace with hash -388402555, now seen corresponding path program 1 times [2023-12-25 07:28:06,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:28:06,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175727023] [2023-12-25 07:28:06,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:28:06,176 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 07:28:06,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:28:06,177 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 07:28:06,179 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 07:28:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:28:06,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:28:06,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:28:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 07:28:06,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:28:06,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:28:06,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175727023] [2023-12-25 07:28:06,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175727023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:28:06,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:28:06,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:28:06,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241054146] [2023-12-25 07:28:06,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:28:06,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:28:06,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:28:06,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:28:06,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:28:06,357 INFO L87 Difference]: Start difference. First operand 97333 states and 145170 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 07:28:07,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:28:07,681 INFO L93 Difference]: Finished difference Result 186473 states and 279492 transitions. [2023-12-25 07:28:07,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:28:07,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 103 [2023-12-25 07:28:07,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:28:07,880 INFO L225 Difference]: With dead ends: 186473 [2023-12-25 07:28:07,880 INFO L226 Difference]: Without dead ends: 92583 [2023-12-25 07:28:07,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 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 07:28:07,969 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 89 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:28:07,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 518 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:28:08,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92583 states. [2023-12-25 07:28:09,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92583 to 90005. [2023-12-25 07:28:09,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90005 states, 90004 states have (on average 1.5023554508688504) internal successors, (135218), 90004 states have internal predecessors, (135218), 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 07:28:09,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90005 states to 90005 states and 135218 transitions. [2023-12-25 07:28:09,756 INFO L78 Accepts]: Start accepts. Automaton has 90005 states and 135218 transitions. Word has length 103 [2023-12-25 07:28:09,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:28:09,756 INFO L495 AbstractCegarLoop]: Abstraction has 90005 states and 135218 transitions. [2023-12-25 07:28:09,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 07:28:09,756 INFO L276 IsEmpty]: Start isEmpty. Operand 90005 states and 135218 transitions. [2023-12-25 07:28:09,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-25 07:28:09,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:28:09,768 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:28:09,775 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 07:28:09,969 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 07:28:09,969 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:28:09,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:28:09,970 INFO L85 PathProgramCache]: Analyzing trace with hash -32169529, now seen corresponding path program 1 times [2023-12-25 07:28:09,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:28:09,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147184036] [2023-12-25 07:28:09,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:28:09,970 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 07:28:09,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:28:09,972 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 07:28:09,974 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 07:28:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:28:10,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:28:10,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:28:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 07:28:10,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:28:10,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:28:10,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147184036] [2023-12-25 07:28:10,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2147184036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:28:10,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:28:10,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:28:10,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542902844] [2023-12-25 07:28:10,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:28:10,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:28:10,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:28:10,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:28:10,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:28:10,179 INFO L87 Difference]: Start difference. First operand 90005 states and 135218 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 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 07:28:11,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:28:11,831 INFO L93 Difference]: Finished difference Result 268942 states and 403568 transitions. [2023-12-25 07:28:11,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:28:11,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 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 103 [2023-12-25 07:28:11,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:28:12,127 INFO L225 Difference]: With dead ends: 268942 [2023-12-25 07:28:12,127 INFO L226 Difference]: Without dead ends: 178948 [2023-12-25 07:28:12,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:28:12,386 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 194 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:28:12,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 413 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:28:12,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178948 states. [2023-12-25 07:28:15,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178948 to 178946. [2023-12-25 07:28:15,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178946 states, 178945 states have (on average 1.487686160552125) internal successors, (266214), 178945 states have internal predecessors, (266214), 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 07:28:15,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178946 states to 178946 states and 266214 transitions. [2023-12-25 07:28:15,803 INFO L78 Accepts]: Start accepts. Automaton has 178946 states and 266214 transitions. Word has length 103 [2023-12-25 07:28:15,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:28:15,803 INFO L495 AbstractCegarLoop]: Abstraction has 178946 states and 266214 transitions. [2023-12-25 07:28:15,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 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 07:28:15,803 INFO L276 IsEmpty]: Start isEmpty. Operand 178946 states and 266214 transitions. [2023-12-25 07:28:15,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-25 07:28:15,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:28:15,808 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:28:15,811 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 07:28:16,011 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 07:28:16,011 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:28:16,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:28:16,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1129457651, now seen corresponding path program 1 times [2023-12-25 07:28:16,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:28:16,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276134929] [2023-12-25 07:28:16,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:28:16,012 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 07:28:16,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:28:16,013 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 07:28:16,014 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 07:28:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:28:16,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:28:16,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:28:16,180 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 07:28:16,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:28:16,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:28:16,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276134929] [2023-12-25 07:28:16,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276134929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:28:16,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:28:16,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:28:16,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345369441] [2023-12-25 07:28:16,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:28:16,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:28:16,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:28:16,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:28:16,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:28:16,182 INFO L87 Difference]: Start difference. First operand 178946 states and 266214 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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 07:28:20,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:28:20,287 INFO L93 Difference]: Finished difference Result 534736 states and 794534 transitions. [2023-12-25 07:28:20,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:28:20,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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 104 [2023-12-25 07:28:20,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:28:20,942 INFO L225 Difference]: With dead ends: 534736 [2023-12-25 07:28:20,943 INFO L226 Difference]: Without dead ends: 355857 [2023-12-25 07:28:21,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:28:21,089 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 169 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:28:21,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 416 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:28:21,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355857 states. [2023-12-25 07:28:27,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355857 to 355855. [2023-12-25 07:28:27,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355855 states, 355854 states have (on average 1.4728568457850693) internal successors, (524122), 355854 states have internal predecessors, (524122), 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 07:28:28,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355855 states to 355855 states and 524122 transitions. [2023-12-25 07:28:28,622 INFO L78 Accepts]: Start accepts. Automaton has 355855 states and 524122 transitions. Word has length 104 [2023-12-25 07:28:28,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:28:28,622 INFO L495 AbstractCegarLoop]: Abstraction has 355855 states and 524122 transitions. [2023-12-25 07:28:28,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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 07:28:28,623 INFO L276 IsEmpty]: Start isEmpty. Operand 355855 states and 524122 transitions. [2023-12-25 07:28:28,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-25 07:28:28,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:28:28,648 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:28:28,666 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 (25)] Forceful destruction successful, exit code 0 [2023-12-25 07:28:28,851 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 07:28:28,851 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:28:28,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:28:28,851 INFO L85 PathProgramCache]: Analyzing trace with hash 697323425, now seen corresponding path program 1 times [2023-12-25 07:28:28,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:28:28,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911380989] [2023-12-25 07:28:28,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:28:28,852 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 07:28:28,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:28:28,853 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 07:28:28,856 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 07:28:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:28:28,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:28:28,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:28:29,041 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 07:28:29,042 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:28:29,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:28:29,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911380989] [2023-12-25 07:28:29,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911380989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:28:29,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:28:29,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:28:29,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324161123] [2023-12-25 07:28:29,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:28:29,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:28:29,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:28:29,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:28:29,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:28:29,043 INFO L87 Difference]: Start difference. First operand 355855 states and 524122 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 07:28:35,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:28:35,394 INFO L93 Difference]: Finished difference Result 740629 states and 1097693 transitions. [2023-12-25 07:28:35,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:28:35,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 105 [2023-12-25 07:28:35,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:28:36,380 INFO L225 Difference]: With dead ends: 740629 [2023-12-25 07:28:36,380 INFO L226 Difference]: Without dead ends: 444755 [2023-12-25 07:28:36,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 102 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 07:28:36,819 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 126 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:28:36,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 553 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:28:37,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444755 states. [2023-12-25 07:28:44,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444755 to 444751. [2023-12-25 07:28:44,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444751 states, 444750 states have (on average 1.47058347386172) internal successors, (654042), 444750 states have internal predecessors, (654042), 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 07:28:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444751 states to 444751 states and 654042 transitions. [2023-12-25 07:28:46,566 INFO L78 Accepts]: Start accepts. Automaton has 444751 states and 654042 transitions. Word has length 105 [2023-12-25 07:28:46,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:28:46,567 INFO L495 AbstractCegarLoop]: Abstraction has 444751 states and 654042 transitions. [2023-12-25 07:28:46,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 07:28:46,567 INFO L276 IsEmpty]: Start isEmpty. Operand 444751 states and 654042 transitions. [2023-12-25 07:28:46,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-25 07:28:46,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:28:46,614 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:46,617 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 (26)] Ended with exit code 0 [2023-12-25 07:28:46,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 07:28:46,817 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:28:46,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:28:46,818 INFO L85 PathProgramCache]: Analyzing trace with hash -563159818, now seen corresponding path program 1 times [2023-12-25 07:28:46,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:28:46,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516097675] [2023-12-25 07:28:46,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:28:46,818 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 07:28:46,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:28:46,819 INFO L229 MonitoredProcess]: Starting monitored process 27 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 07:28:46,845 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 (27)] Waiting until timeout for monitored process [2023-12-25 07:28:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:28:46,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:28:46,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:28:46,908 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-25 07:28:46,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:28:46,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:28:46,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516097675] [2023-12-25 07:28:46,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516097675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:28:46,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:28:46,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:28:46,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105050358] [2023-12-25 07:28:46,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:28:46,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:28:46,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:28:46,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:28:46,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:28:46,910 INFO L87 Difference]: Start difference. First operand 444751 states and 654042 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 07:28:52,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:28:52,017 INFO L93 Difference]: Finished difference Result 668148 states and 980601 transitions. [2023-12-25 07:28:52,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:28:52,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 167 [2023-12-25 07:28:52,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:28:53,231 INFO L225 Difference]: With dead ends: 668148 [2023-12-25 07:28:53,231 INFO L226 Difference]: Without dead ends: 445009 [2023-12-25 07:28:53,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 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 07:28:53,735 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 60 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:28:53,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 384 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:28:54,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445009 states. [2023-12-25 07:29:01,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445009 to 444751. [2023-12-25 07:29:01,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444751 states, 444750 states have (on average 1.4705812254075323) internal successors, (654041), 444750 states have internal predecessors, (654041), 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 07:29:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444751 states to 444751 states and 654041 transitions. [2023-12-25 07:29:04,209 INFO L78 Accepts]: Start accepts. Automaton has 444751 states and 654041 transitions. Word has length 167 [2023-12-25 07:29:04,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:29:04,209 INFO L495 AbstractCegarLoop]: Abstraction has 444751 states and 654041 transitions. [2023-12-25 07:29:04,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 07:29:04,209 INFO L276 IsEmpty]: Start isEmpty. Operand 444751 states and 654041 transitions. [2023-12-25 07:29:04,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-25 07:29:04,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:29:04,805 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:29:04,819 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 (27)] Forceful destruction successful, exit code 0 [2023-12-25 07:29:05,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 07:29:05,009 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:29:05,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:29:05,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1826306082, now seen corresponding path program 1 times [2023-12-25 07:29:05,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:29:05,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786219445] [2023-12-25 07:29:05,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:29:05,010 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 07:29:05,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:29:05,021 INFO L229 MonitoredProcess]: Starting monitored process 28 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 07:29:05,045 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 (28)] Waiting until timeout for monitored process [2023-12-25 07:29:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:29:05,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:29:05,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:29:05,124 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-12-25 07:29:05,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:29:05,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:29:05,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786219445] [2023-12-25 07:29:05,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786219445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:29:05,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:29:05,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:29:05,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006684532] [2023-12-25 07:29:05,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:29:05,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:29:05,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:29:05,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:29:05,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:29:05,125 INFO L87 Difference]: Start difference. First operand 444751 states and 654041 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 07:29:10,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:29:10,554 INFO L93 Difference]: Finished difference Result 667814 states and 980238 transitions. [2023-12-25 07:29:10,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:29:10,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 168 [2023-12-25 07:29:10,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:29:11,726 INFO L225 Difference]: With dead ends: 667814 [2023-12-25 07:29:11,726 INFO L226 Difference]: Without dead ends: 444751 [2023-12-25 07:29:11,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 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 07:29:11,876 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 46 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:29:11,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 372 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:29:12,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444751 states. [2023-12-25 07:29:19,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444751 to 444751. [2023-12-25 07:29:19,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444751 states, 444750 states have (on average 1.4705699831365935) internal successors, (654036), 444750 states have internal predecessors, (654036), 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 07:29:22,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444751 states to 444751 states and 654036 transitions. [2023-12-25 07:29:22,037 INFO L78 Accepts]: Start accepts. Automaton has 444751 states and 654036 transitions. Word has length 168 [2023-12-25 07:29:22,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:29:22,037 INFO L495 AbstractCegarLoop]: Abstraction has 444751 states and 654036 transitions. [2023-12-25 07:29:22,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 07:29:22,037 INFO L276 IsEmpty]: Start isEmpty. Operand 444751 states and 654036 transitions. [2023-12-25 07:29:22,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-25 07:29:22,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:29:22,095 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:29:22,100 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 (28)] Forceful destruction successful, exit code 0 [2023-12-25 07:29:22,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 07:29:22,298 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:29:22,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:29:22,299 INFO L85 PathProgramCache]: Analyzing trace with hash 768491782, now seen corresponding path program 1 times [2023-12-25 07:29:22,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:29:22,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25690107] [2023-12-25 07:29:22,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:29:22,301 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 07:29:22,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:29:22,302 INFO L229 MonitoredProcess]: Starting monitored process 29 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 07:29:22,328 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 (29)] Waiting until timeout for monitored process [2023-12-25 07:29:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:29:22,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:29:22,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:29:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-25 07:29:22,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:29:22,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:29:22,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25690107] [2023-12-25 07:29:22,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25690107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:29:22,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:29:22,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:29:22,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263789887] [2023-12-25 07:29:22,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:29:22,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:29:22,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:29:22,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:29:22,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:29:22,476 INFO L87 Difference]: Start difference. First operand 444751 states and 654036 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 07:29:27,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:29:27,650 INFO L93 Difference]: Finished difference Result 723557 states and 1061541 transitions. [2023-12-25 07:29:27,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:29:27,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 169 [2023-12-25 07:29:27,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:29:28,127 INFO L225 Difference]: With dead ends: 723557 [2023-12-25 07:29:28,127 INFO L226 Difference]: Without dead ends: 279811 [2023-12-25 07:29:28,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:29:28,479 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 25 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:29:28,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 517 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:29:28,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279811 states. [2023-12-25 07:29:33,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279811 to 279791. [2023-12-25 07:29:33,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279791 states, 279790 states have (on average 1.4603524071625147) internal successors, (408592), 279790 states have internal predecessors, (408592), 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 07:29:33,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279791 states to 279791 states and 408592 transitions. [2023-12-25 07:29:33,999 INFO L78 Accepts]: Start accepts. Automaton has 279791 states and 408592 transitions. Word has length 169 [2023-12-25 07:29:33,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:29:33,999 INFO L495 AbstractCegarLoop]: Abstraction has 279791 states and 408592 transitions. [2023-12-25 07:29:33,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 07:29:33,999 INFO L276 IsEmpty]: Start isEmpty. Operand 279791 states and 408592 transitions. [2023-12-25 07:29:34,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:29:34,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:29:34,424 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:34,431 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 (29)] Forceful destruction successful, exit code 0 [2023-12-25 07:29:34,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 07:29:34,634 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:29:34,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:29:34,634 INFO L85 PathProgramCache]: Analyzing trace with hash -250274105, now seen corresponding path program 1 times [2023-12-25 07:29:34,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:29:34,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738607094] [2023-12-25 07:29:34,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:29:34,635 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 07:29:34,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:29:34,637 INFO L229 MonitoredProcess]: Starting monitored process 30 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 07:29:34,638 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 (30)] Waiting until timeout for monitored process [2023-12-25 07:29:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:29:34,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:29:34,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:29:34,794 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-25 07:29:34,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:29:34,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:29:34,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738607094] [2023-12-25 07:29:34,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738607094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:29:34,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:29:34,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:29:34,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708024715] [2023-12-25 07:29:34,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:29:34,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:29:34,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:29:34,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:29:34,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:29:34,796 INFO L87 Difference]: Start difference. First operand 279791 states and 408592 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 07:29:36,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:29:36,900 INFO L93 Difference]: Finished difference Result 372163 states and 546022 transitions. [2023-12-25 07:29:36,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:29:36,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 171 [2023-12-25 07:29:36,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:29:37,139 INFO L225 Difference]: With dead ends: 372163 [2023-12-25 07:29:37,140 INFO L226 Difference]: Without dead ends: 97721 [2023-12-25 07:29:37,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 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 07:29:37,281 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 44 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 305 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 07:29:37,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 305 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:29:37,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97721 states. [2023-12-25 07:29:39,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97721 to 95371. [2023-12-25 07:29:39,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95371 states, 95370 states have (on average 1.455677886127713) internal successors, (138828), 95370 states have internal predecessors, (138828), 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 07:29:39,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95371 states to 95371 states and 138828 transitions. [2023-12-25 07:29:39,409 INFO L78 Accepts]: Start accepts. Automaton has 95371 states and 138828 transitions. Word has length 171 [2023-12-25 07:29:39,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:29:39,409 INFO L495 AbstractCegarLoop]: Abstraction has 95371 states and 138828 transitions. [2023-12-25 07:29:39,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 07:29:39,409 INFO L276 IsEmpty]: Start isEmpty. Operand 95371 states and 138828 transitions. [2023-12-25 07:29:39,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:29:39,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:29:39,424 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:39,427 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 (30)] Forceful destruction successful, exit code 0 [2023-12-25 07:29:39,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 07:29:39,627 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:29:39,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:29:39,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1433535827, now seen corresponding path program 1 times [2023-12-25 07:29:39,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:29:39,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537713400] [2023-12-25 07:29:39,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:29:39,628 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 07:29:39,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:29:39,629 INFO L229 MonitoredProcess]: Starting monitored process 31 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 07:29:39,655 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 (31)] Waiting until timeout for monitored process [2023-12-25 07:29:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:29:39,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:29:39,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:29:39,745 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-25 07:29:39,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:29:39,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:29:39,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537713400] [2023-12-25 07:29:39,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537713400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:29:39,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:29:39,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:29:39,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386993647] [2023-12-25 07:29:39,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:29:39,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:29:39,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:29:39,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:29:39,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:29:39,746 INFO L87 Difference]: Start difference. First operand 95371 states and 138828 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 07:29:40,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:29:40,604 INFO L93 Difference]: Finished difference Result 157494 states and 228793 transitions. [2023-12-25 07:29:40,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:29:40,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 171 [2023-12-25 07:29:40,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:29:40,701 INFO L225 Difference]: With dead ends: 157494 [2023-12-25 07:29:40,701 INFO L226 Difference]: Without dead ends: 62344 [2023-12-25 07:29:40,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:29:40,744 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 59 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:29:40,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 526 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:29:40,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62344 states. [2023-12-25 07:29:41,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62344 to 62344. [2023-12-25 07:29:41,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62344 states, 62343 states have (on average 1.4469627704794443) internal successors, (90208), 62343 states have internal predecessors, (90208), 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 07:29:41,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62344 states to 62344 states and 90208 transitions. [2023-12-25 07:29:41,979 INFO L78 Accepts]: Start accepts. Automaton has 62344 states and 90208 transitions. Word has length 171 [2023-12-25 07:29:41,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:29:41,979 INFO L495 AbstractCegarLoop]: Abstraction has 62344 states and 90208 transitions. [2023-12-25 07:29:41,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 07:29:41,980 INFO L276 IsEmpty]: Start isEmpty. Operand 62344 states and 90208 transitions. [2023-12-25 07:29:41,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-25 07:29:41,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:29:41,989 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:41,992 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 (31)] Forceful destruction successful, exit code 0 [2023-12-25 07:29:42,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 07:29:42,193 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:29:42,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:29:42,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1503236127, now seen corresponding path program 1 times [2023-12-25 07:29:42,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:29:42,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521655786] [2023-12-25 07:29:42,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:29:42,194 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 07:29:42,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:29:42,195 INFO L229 MonitoredProcess]: Starting monitored process 32 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 07:29:42,196 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 (32)] Waiting until timeout for monitored process [2023-12-25 07:29:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:29:42,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:29:42,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:29:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-12-25 07:29:42,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:29:42,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:29:42,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521655786] [2023-12-25 07:29:42,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521655786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:29:42,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:29:42,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:29:42,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769976445] [2023-12-25 07:29:42,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:29:42,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:29:42,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:29:42,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:29:42,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:29:42,313 INFO L87 Difference]: Start difference. First operand 62344 states and 90208 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 07:29:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:29:42,934 INFO L93 Difference]: Finished difference Result 112567 states and 162760 transitions. [2023-12-25 07:29:42,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:29:42,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 173 [2023-12-25 07:29:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:29:43,007 INFO L225 Difference]: With dead ends: 112567 [2023-12-25 07:29:43,007 INFO L226 Difference]: Without dead ends: 50492 [2023-12-25 07:29:43,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:29:43,037 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 37 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:29:43,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 504 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:29:43,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50492 states. [2023-12-25 07:29:43,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50492 to 50491. [2023-12-25 07:29:43,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50491 states, 50490 states have (on average 1.4426223014458308) internal successors, (72838), 50490 states have internal predecessors, (72838), 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 07:29:44,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50491 states to 50491 states and 72838 transitions. [2023-12-25 07:29:44,103 INFO L78 Accepts]: Start accepts. Automaton has 50491 states and 72838 transitions. Word has length 173 [2023-12-25 07:29:44,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:29:44,103 INFO L495 AbstractCegarLoop]: Abstraction has 50491 states and 72838 transitions. [2023-12-25 07:29:44,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 07:29:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand 50491 states and 72838 transitions. [2023-12-25 07:29:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-25 07:29:44,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:29:44,111 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:29:44,117 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 (32)] Forceful destruction successful, exit code 0 [2023-12-25 07:29:44,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 07:29:44,314 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:29:44,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:29:44,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1213905513, now seen corresponding path program 1 times [2023-12-25 07:29:44,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:29:44,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146659582] [2023-12-25 07:29:44,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:29:44,315 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 07:29:44,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:29:44,316 INFO L229 MonitoredProcess]: Starting monitored process 33 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 07:29:44,318 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 (33)] Waiting until timeout for monitored process [2023-12-25 07:29:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:29:44,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 07:29:44,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:29:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 36 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:29:46,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:29:46,811 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 36 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:29:46,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:29:46,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146659582] [2023-12-25 07:29:46,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146659582] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:29:46,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:29:46,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2023-12-25 07:29:46,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744140275] [2023-12-25 07:29:46,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:29:46,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-25 07:29:46,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:29:46,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-25 07:29:46,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2023-12-25 07:29:46,826 INFO L87 Difference]: Start difference. First operand 50491 states and 72838 transitions. Second operand has 29 states, 29 states have (on average 11.344827586206897) internal successors, (329), 29 states have internal predecessors, (329), 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)