/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 09:26:18,997 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 09:26:19,067 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 09:26:19,070 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 09:26:19,071 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 09:26:19,097 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 09:26:19,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 09:26:19,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 09:26:19,098 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 09:26:19,098 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 09:26:19,099 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 09:26:19,099 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 09:26:19,099 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 09:26:19,099 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 09:26:19,100 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 09:26:19,100 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 09:26:19,100 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 09:26:19,100 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 09:26:19,101 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 09:26:19,101 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 09:26:19,101 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 09:26:19,101 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 09:26:19,102 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 09:26:19,102 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 09:26:19,102 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 09:26:19,102 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 09:26:19,102 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 09:26:19,102 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 09:26:19,103 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 09:26:19,103 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 09:26:19,103 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 09:26:19,103 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 09:26:19,103 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 09:26:19,104 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 09:26:19,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 09:26:19,104 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 09:26:19,104 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 09:26:19,104 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 09:26:19,105 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 09:26:19,105 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 09:26:19,105 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 09:26:19,105 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 09:26:19,105 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 09:26:19,106 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 09:26:19,106 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 09:26:19,106 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 09:26:19,106 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 09:26:19,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 09:26:19,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 09:26:19,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 09:26:19,331 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 09:26:19,331 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 09:26:19,333 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label41.c [2023-12-16 09:26:20,497 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 09:26:20,737 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 09:26:20,738 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label41.c [2023-12-16 09:26:20,761 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cd148a69/5e239204c6744d36b9b97beb5385c5e9/FLAGfb615b728 [2023-12-16 09:26:20,773 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cd148a69/5e239204c6744d36b9b97beb5385c5e9 [2023-12-16 09:26:20,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 09:26:20,776 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 09:26:20,777 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 09:26:20,777 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 09:26:20,784 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 09:26:20,784 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:26:20" (1/1) ... [2023-12-16 09:26:20,785 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@705a394c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:26:20, skipping insertion in model container [2023-12-16 09:26:20,786 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:26:20" (1/1) ... [2023-12-16 09:26:20,835 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 09:26:20,981 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label41.c[1045,1058] [2023-12-16 09:26:21,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 09:26:21,181 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 09:26:21,193 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label41.c[1045,1058] [2023-12-16 09:26:21,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 09:26:21,272 INFO L206 MainTranslator]: Completed translation [2023-12-16 09:26:21,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:26:21 WrapperNode [2023-12-16 09:26:21,273 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 09:26:21,274 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 09:26:21,274 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 09:26:21,274 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 09:26:21,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:26:21" (1/1) ... [2023-12-16 09:26:21,310 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:26:21" (1/1) ... [2023-12-16 09:26:21,415 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 857 [2023-12-16 09:26:21,415 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 09:26:21,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 09:26:21,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 09:26:21,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 09:26:21,425 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:26:21" (1/1) ... [2023-12-16 09:26:21,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:26:21" (1/1) ... [2023-12-16 09:26:21,433 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:26:21" (1/1) ... [2023-12-16 09:26:21,489 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 09:26:21,489 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:26:21" (1/1) ... [2023-12-16 09:26:21,489 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:26:21" (1/1) ... [2023-12-16 09:26:21,506 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:26:21" (1/1) ... [2023-12-16 09:26:21,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:26:21" (1/1) ... [2023-12-16 09:26:21,531 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:26:21" (1/1) ... [2023-12-16 09:26:21,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:26:21" (1/1) ... [2023-12-16 09:26:21,559 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 09:26:21,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 09:26:21,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 09:26:21,560 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 09:26:21,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:26:21" (1/1) ... [2023-12-16 09:26:21,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 09:26:21,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 09:26:21,594 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 09:26:21,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 09:26:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 09:26:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 09:26:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 09:26:21,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 09:26:21,667 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 09:26:21,669 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 09:26:24,065 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 09:26:24,113 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 09:26:24,113 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 09:26:24,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:26:24 BoogieIcfgContainer [2023-12-16 09:26:24,114 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 09:26:24,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 09:26:24,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 09:26:24,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 09:26:24,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 09:26:20" (1/3) ... [2023-12-16 09:26:24,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504b25a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:26:24, skipping insertion in model container [2023-12-16 09:26:24,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:26:21" (2/3) ... [2023-12-16 09:26:24,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504b25a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:26:24, skipping insertion in model container [2023-12-16 09:26:24,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:26:24" (3/3) ... [2023-12-16 09:26:24,120 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label41.c [2023-12-16 09:26:24,164 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 09:26:24,165 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 09:26:24,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 09:26:24,215 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;@7fd09711, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 09:26:24,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 09:26:24,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 181 states have (on average 1.988950276243094) internal successors, (360), 182 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:24,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-16 09:26:24,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:26:24,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-16 09:26:24,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:26:24,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:26:24,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1596255909, now seen corresponding path program 1 times [2023-12-16 09:26:24,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:26:24,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061029498] [2023-12-16 09:26:24,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:26:24,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:26:24,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:26:24,259 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 09:26:24,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 09:26:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:26:24,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 09:26:24,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:26:24,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:26:24,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:26:24,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:26:24,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061029498] [2023-12-16 09:26:24,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061029498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:26:24,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:26:24,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:26:24,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500093470] [2023-12-16 09:26:24,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:26:24,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 09:26:24,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:26:24,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 09:26:24,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 09:26:24,359 INFO L87 Difference]: Start difference. First operand has 183 states, 181 states have (on average 1.988950276243094) internal successors, (360), 182 states have internal predecessors, (360), 0 states have call successors, (0), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:24,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:26:24,405 INFO L93 Difference]: Finished difference Result 365 states and 719 transitions. [2023-12-16 09:26:24,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 09:26:24,409 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-12-16 09:26:24,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:26:24,421 INFO L225 Difference]: With dead ends: 365 [2023-12-16 09:26:24,421 INFO L226 Difference]: Without dead ends: 181 [2023-12-16 09:26:24,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 09:26:24,425 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 09:26:24,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 295 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 09:26:24,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-16 09:26:24,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-12-16 09:26:24,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.6388888888888888) internal successors, (295), 180 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 295 transitions. [2023-12-16 09:26:24,479 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 295 transitions. Word has length 6 [2023-12-16 09:26:24,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:26:24,479 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 295 transitions. [2023-12-16 09:26:24,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:24,480 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 295 transitions. [2023-12-16 09:26:24,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-16 09:26:24,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:26:24,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-16 09:26:24,498 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 [2023-12-16 09:26:24,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:26:24,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:26:24,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:26:24,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1597331268, now seen corresponding path program 1 times [2023-12-16 09:26:24,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:26:24,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658122615] [2023-12-16 09:26:24,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:26:24,685 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:26:24,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:26:24,686 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 09:26:24,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 09:26:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:26:24,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:26:24,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:26:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:26:24,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:26:24,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:26:24,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658122615] [2023-12-16 09:26:24,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658122615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:26:24,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:26:24,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:26:24,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915275170] [2023-12-16 09:26:24,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:26:24,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:26:24,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:26:24,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:26:24,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:26:24,739 INFO L87 Difference]: Start difference. First operand 181 states and 295 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:27,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:26:27,663 INFO L93 Difference]: Finished difference Result 539 states and 882 transitions. [2023-12-16 09:26:27,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:26:27,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-12-16 09:26:27,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:26:27,665 INFO L225 Difference]: With dead ends: 539 [2023-12-16 09:26:27,665 INFO L226 Difference]: Without dead ends: 359 [2023-12-16 09:26:27,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:26:27,667 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 184 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-16 09:26:27,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 64 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-16 09:26:27,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-12-16 09:26:27,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2023-12-16 09:26:27,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.488826815642458) internal successors, (533), 358 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:27,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 533 transitions. [2023-12-16 09:26:27,681 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 533 transitions. Word has length 6 [2023-12-16 09:26:27,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:26:27,682 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 533 transitions. [2023-12-16 09:26:27,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:27,682 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 533 transitions. [2023-12-16 09:26:27,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 09:26:27,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:26:27,683 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:26:27,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 09:26:27,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:26:27,886 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:26:27,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:26:27,886 INFO L85 PathProgramCache]: Analyzing trace with hash 2063506193, now seen corresponding path program 1 times [2023-12-16 09:26:27,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:26:27,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475439850] [2023-12-16 09:26:27,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:26:27,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:26:27,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:26:27,903 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 09:26:27,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 09:26:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:26:27,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:26:27,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:26:28,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:26:28,060 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:26:28,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:26:28,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475439850] [2023-12-16 09:26:28,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475439850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:26:28,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:26:28,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:26:28,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660442050] [2023-12-16 09:26:28,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:26:28,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:26:28,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:26:28,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:26:28,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:26:28,062 INFO L87 Difference]: Start difference. First operand 359 states and 533 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:31,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:26:31,099 INFO L93 Difference]: Finished difference Result 1073 states and 1596 transitions. [2023-12-16 09:26:31,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:26:31,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-12-16 09:26:31,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:26:31,103 INFO L225 Difference]: With dead ends: 1073 [2023-12-16 09:26:31,103 INFO L226 Difference]: Without dead ends: 715 [2023-12-16 09:26:31,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:26:31,105 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 115 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-16 09:26:31,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 100 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-16 09:26:31,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2023-12-16 09:26:31,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2023-12-16 09:26:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 1.3459383753501402) internal successors, (961), 714 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:31,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 961 transitions. [2023-12-16 09:26:31,121 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 961 transitions. Word has length 71 [2023-12-16 09:26:31,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:26:31,121 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 961 transitions. [2023-12-16 09:26:31,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 961 transitions. [2023-12-16 09:26:31,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 09:26:31,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:26:31,123 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:26:31,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 09:26:31,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:26:31,326 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:26:31,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:26:31,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1049568783, now seen corresponding path program 1 times [2023-12-16 09:26:31,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:26:31,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214375903] [2023-12-16 09:26:31,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:26:31,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:26:31,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:26:31,329 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 09:26:31,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 09:26:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:26:31,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:26:31,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:26:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:26:31,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:26:31,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:26:31,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214375903] [2023-12-16 09:26:31,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214375903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:26:31,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:26:31,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:26:31,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102018934] [2023-12-16 09:26:31,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:26:31,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:26:31,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:26:31,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:26:31,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:26:31,518 INFO L87 Difference]: Start difference. First operand 715 states and 961 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 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) [2023-12-16 09:26:34,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:26:34,210 INFO L93 Difference]: Finished difference Result 1965 states and 2655 transitions. [2023-12-16 09:26:34,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:26:34,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 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 [2023-12-16 09:26:34,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:26:34,221 INFO L225 Difference]: With dead ends: 1965 [2023-12-16 09:26:34,221 INFO L226 Difference]: Without dead ends: 1251 [2023-12-16 09:26:34,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:26:34,224 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 131 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 09:26:34,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 86 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 09:26:34,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2023-12-16 09:26:34,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1249. [2023-12-16 09:26:34,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 1.2467948717948718) internal successors, (1556), 1248 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:34,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1556 transitions. [2023-12-16 09:26:34,249 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1556 transitions. Word has length 74 [2023-12-16 09:26:34,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:26:34,250 INFO L495 AbstractCegarLoop]: Abstraction has 1249 states and 1556 transitions. [2023-12-16 09:26:34,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 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) [2023-12-16 09:26:34,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1556 transitions. [2023-12-16 09:26:34,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-16 09:26:34,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:26:34,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:26:34,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 09:26:34,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:26:34,454 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:26:34,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:26:34,454 INFO L85 PathProgramCache]: Analyzing trace with hash 996972303, now seen corresponding path program 1 times [2023-12-16 09:26:34,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:26:34,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090451674] [2023-12-16 09:26:34,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:26:34,455 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:26:34,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:26:34,456 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 09:26:34,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 09:26:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:26:34,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:26:34,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:26:34,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:26:34,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:26:34,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:26:34,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090451674] [2023-12-16 09:26:34,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090451674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:26:34,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:26:34,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 09:26:34,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661559472] [2023-12-16 09:26:34,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:26:34,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:26:34,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:26:34,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:26:34,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:26:34,517 INFO L87 Difference]: Start difference. First operand 1249 states and 1556 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:37,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:26:37,312 INFO L93 Difference]: Finished difference Result 2675 states and 3446 transitions. [2023-12-16 09:26:37,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:26:37,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-16 09:26:37,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:26:37,316 INFO L225 Difference]: With dead ends: 2675 [2023-12-16 09:26:37,316 INFO L226 Difference]: Without dead ends: 1427 [2023-12-16 09:26:37,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:26:37,318 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 174 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-16 09:26:37,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 294 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-16 09:26:37,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2023-12-16 09:26:37,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1249. [2023-12-16 09:26:37,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 1.2211538461538463) internal successors, (1524), 1248 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1524 transitions. [2023-12-16 09:26:37,334 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1524 transitions. Word has length 86 [2023-12-16 09:26:37,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:26:37,334 INFO L495 AbstractCegarLoop]: Abstraction has 1249 states and 1524 transitions. [2023-12-16 09:26:37,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:37,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1524 transitions. [2023-12-16 09:26:37,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-16 09:26:37,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:26:37,347 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 09:26:37,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-16 09:26:37,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:26:37,556 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:26:37,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:26:37,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1569969695, now seen corresponding path program 1 times [2023-12-16 09:26:37,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:26:37,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595836836] [2023-12-16 09:26:37,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:26:37,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:26:37,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:26:37,559 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 09:26:37,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 09:26:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:26:37,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 09:26:37,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:26:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:26:38,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:26:38,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:26:38,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595836836] [2023-12-16 09:26:38,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595836836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:26:38,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:26:38,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 09:26:38,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248651079] [2023-12-16 09:26:38,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:26:38,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 09:26:38,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:26:38,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 09:26:38,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 09:26:38,120 INFO L87 Difference]: Start difference. First operand 1249 states and 1524 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:40,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:26:40,079 INFO L93 Difference]: Finished difference Result 2170 states and 2696 transitions. [2023-12-16 09:26:40,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 09:26:40,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2023-12-16 09:26:40,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:26:40,083 INFO L225 Difference]: With dead ends: 2170 [2023-12-16 09:26:40,083 INFO L226 Difference]: Without dead ends: 1249 [2023-12-16 09:26:40,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 09:26:40,085 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 110 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 09:26:40,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 109 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 09:26:40,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2023-12-16 09:26:40,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1249. [2023-12-16 09:26:40,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 1.2091346153846154) internal successors, (1509), 1248 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:40,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1509 transitions. [2023-12-16 09:26:40,101 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1509 transitions. Word has length 165 [2023-12-16 09:26:40,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:26:40,101 INFO L495 AbstractCegarLoop]: Abstraction has 1249 states and 1509 transitions. [2023-12-16 09:26:40,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:40,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1509 transitions. [2023-12-16 09:26:40,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-16 09:26:40,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:26:40,104 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 09:26:40,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-16 09:26:40,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:26:40,308 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:26:40,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:26:40,308 INFO L85 PathProgramCache]: Analyzing trace with hash -490232535, now seen corresponding path program 1 times [2023-12-16 09:26:40,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:26:40,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090623898] [2023-12-16 09:26:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:26:40,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:26:40,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:26:40,311 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 09:26:40,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 09:26:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:26:40,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 09:26:40,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:26:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-16 09:26:41,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:26:41,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:26:41,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090623898] [2023-12-16 09:26:41,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090623898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:26:41,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:26:41,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:26:41,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619072012] [2023-12-16 09:26:41,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:26:41,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:26:41,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:26:41,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:26:41,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:26:41,006 INFO L87 Difference]: Start difference. First operand 1249 states and 1509 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:42,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:26:42,927 INFO L93 Difference]: Finished difference Result 2141 states and 2652 transitions. [2023-12-16 09:26:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:26:42,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 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 260 [2023-12-16 09:26:42,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:26:42,930 INFO L225 Difference]: With dead ends: 2141 [2023-12-16 09:26:42,931 INFO L226 Difference]: Without dead ends: 1249 [2023-12-16 09:26:42,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:26:42,932 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 73 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 09:26:42,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 120 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 09:26:42,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2023-12-16 09:26:42,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1249. [2023-12-16 09:26:42,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 1.2043269230769231) internal successors, (1503), 1248 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1503 transitions. [2023-12-16 09:26:42,946 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1503 transitions. Word has length 260 [2023-12-16 09:26:42,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:26:42,946 INFO L495 AbstractCegarLoop]: Abstraction has 1249 states and 1503 transitions. [2023-12-16 09:26:42,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:42,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1503 transitions. [2023-12-16 09:26:42,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-12-16 09:26:42,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:26:42,949 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 09:26:42,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 09:26:43,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:26:43,154 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:26:43,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:26:43,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1879556358, now seen corresponding path program 1 times [2023-12-16 09:26:43,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:26:43,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506054214] [2023-12-16 09:26:43,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:26:43,156 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:26:43,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:26:43,157 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 09:26:43,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 09:26:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:26:43,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 09:26:43,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:26:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 239 proven. 135 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-16 09:26:43,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 09:26:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 374 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-16 09:26:43,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:26:43,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506054214] [2023-12-16 09:26:43,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506054214] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 09:26:43,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 09:26:43,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 09:26:43,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754095035] [2023-12-16 09:26:43,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:26:43,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:26:43,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:26:43,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:26:43,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 09:26:43,979 INFO L87 Difference]: Start difference. First operand 1249 states and 1503 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:50,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:26:50,086 INFO L93 Difference]: Finished difference Result 2675 states and 3360 transitions. [2023-12-16 09:26:50,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:26:50,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 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 364 [2023-12-16 09:26:50,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:26:50,091 INFO L225 Difference]: With dead ends: 2675 [2023-12-16 09:26:50,091 INFO L226 Difference]: Without dead ends: 1783 [2023-12-16 09:26:50,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 09:26:50,093 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 134 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-16 09:26:50,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 55 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-16 09:26:50,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2023-12-16 09:26:50,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1605. [2023-12-16 09:26:50,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1604 states have (on average 1.2150872817955112) internal successors, (1949), 1604 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 1949 transitions. [2023-12-16 09:26:50,110 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 1949 transitions. Word has length 364 [2023-12-16 09:26:50,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:26:50,111 INFO L495 AbstractCegarLoop]: Abstraction has 1605 states and 1949 transitions. [2023-12-16 09:26:50,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:50,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 1949 transitions. [2023-12-16 09:26:50,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-12-16 09:26:50,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:26:50,114 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:26:50,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 09:26:50,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:26:50,324 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:26:50,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:26:50,324 INFO L85 PathProgramCache]: Analyzing trace with hash 2144293276, now seen corresponding path program 1 times [2023-12-16 09:26:50,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:26:50,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283762402] [2023-12-16 09:26:50,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:26:50,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:26:50,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:26:50,327 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 09:26:50,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 09:26:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:26:50,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 09:26:50,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:26:50,839 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 250 proven. 159 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-16 09:26:50,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 09:26:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-16 09:26:51,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:26:51,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283762402] [2023-12-16 09:26:51,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283762402] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 09:26:51,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 09:26:51,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 09:26:51,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251273316] [2023-12-16 09:26:51,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:26:51,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:26:51,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:26:51,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:26:51,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 09:26:51,397 INFO L87 Difference]: Start difference. First operand 1605 states and 1949 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:56,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:26:56,625 INFO L93 Difference]: Finished difference Result 3743 states and 4698 transitions. [2023-12-16 09:26:56,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:26:56,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 376 [2023-12-16 09:26:56,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:26:56,631 INFO L225 Difference]: With dead ends: 3743 [2023-12-16 09:26:56,631 INFO L226 Difference]: Without dead ends: 2495 [2023-12-16 09:26:56,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 09:26:56,635 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 114 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-16 09:26:56,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 211 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-16 09:26:56,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2023-12-16 09:26:56,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2317. [2023-12-16 09:26:56,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 2316 states have (on average 1.2284110535405872) internal successors, (2845), 2316 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:56,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2845 transitions. [2023-12-16 09:26:56,660 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2845 transitions. Word has length 376 [2023-12-16 09:26:56,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:26:56,660 INFO L495 AbstractCegarLoop]: Abstraction has 2317 states and 2845 transitions. [2023-12-16 09:26:56,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 09:26:56,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2845 transitions. [2023-12-16 09:26:56,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2023-12-16 09:26:56,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:26:56,666 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:26:56,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 09:26:56,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:26:56,872 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:26:56,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:26:56,873 INFO L85 PathProgramCache]: Analyzing trace with hash -806131187, now seen corresponding path program 1 times [2023-12-16 09:26:56,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:26:56,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914760762] [2023-12-16 09:26:56,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:26:56,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:26:56,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:26:56,875 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 09:26:56,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 09:26:57,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:26:57,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 09:26:57,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:26:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 617 proven. 277 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-16 09:26:58,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 09:27:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 865 proven. 29 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-16 09:27:05,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:27:05,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914760762] [2023-12-16 09:27:05,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914760762] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 09:27:05,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 09:27:05,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-16 09:27:05,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951764597] [2023-12-16 09:27:05,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 09:27:05,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 09:27:05,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:27:05,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 09:27:05,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-16 09:27:05,094 INFO L87 Difference]: Start difference. First operand 2317 states and 2845 transitions. Second operand has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 09:27:35,405 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 09:27:35,405 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 09:27:35,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 09:27:35,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1006 GetRequests, 998 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-16 09:27:35,500 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 605 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 2613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.1s IncrementalHoareTripleChecker+Time [2023-12-16 09:27:35,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 51 Invalid, 2613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 30.1s Time] [2023-12-16 09:27:35,501 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 09:27:35,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 09:27:35,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:27:35,702 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (2317states) and FLOYD_HOARE automaton (currently 9 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (5201 states constructed, input type IntersectNwa). [2023-12-16 09:27:35,706 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:27:35,708 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 09:27:35,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 09:27:35 BoogieIcfgContainer [2023-12-16 09:27:35,709 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 09:27:35,709 INFO L158 Benchmark]: Toolchain (without parser) took 74933.52ms. Allocated memory was 392.2MB in the beginning and 499.1MB in the end (delta: 107.0MB). Free memory was 337.8MB in the beginning and 399.7MB in the end (delta: -61.9MB). Peak memory consumption was 273.2MB. Max. memory is 8.0GB. [2023-12-16 09:27:35,709 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 196.1MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 09:27:35,710 INFO L158 Benchmark]: CACSL2BoogieTranslator took 496.67ms. Allocated memory is still 392.2MB. Free memory was 337.5MB in the beginning and 299.7MB in the end (delta: 37.8MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-12-16 09:27:35,710 INFO L158 Benchmark]: Boogie Procedure Inliner took 141.34ms. Allocated memory is still 392.2MB. Free memory was 299.7MB in the beginning and 356.2MB in the end (delta: -56.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 09:27:35,710 INFO L158 Benchmark]: Boogie Preprocessor took 144.02ms. Allocated memory is still 392.2MB. Free memory was 356.2MB in the beginning and 348.8MB in the end (delta: 7.4MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-16 09:27:35,710 INFO L158 Benchmark]: RCFGBuilder took 2553.34ms. Allocated memory is still 392.2MB. Free memory was 348.8MB in the beginning and 218.9MB in the end (delta: 130.0MB). Peak memory consumption was 130.0MB. Max. memory is 8.0GB. [2023-12-16 09:27:35,710 INFO L158 Benchmark]: TraceAbstraction took 71593.94ms. Allocated memory was 392.2MB in the beginning and 499.1MB in the end (delta: 107.0MB). Free memory was 217.8MB in the beginning and 399.7MB in the end (delta: -181.9MB). Peak memory consumption was 153.3MB. Max. memory is 8.0GB. [2023-12-16 09:27:35,711 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 196.1MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 496.67ms. Allocated memory is still 392.2MB. Free memory was 337.5MB in the beginning and 299.7MB in the end (delta: 37.8MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 141.34ms. Allocated memory is still 392.2MB. Free memory was 299.7MB in the beginning and 356.2MB in the end (delta: -56.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 144.02ms. Allocated memory is still 392.2MB. Free memory was 356.2MB in the beginning and 348.8MB in the end (delta: 7.4MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 2553.34ms. Allocated memory is still 392.2MB. Free memory was 348.8MB in the beginning and 218.9MB in the end (delta: 130.0MB). Peak memory consumption was 130.0MB. Max. memory is 8.0GB. * TraceAbstraction took 71593.94ms. Allocated memory was 392.2MB in the beginning and 499.1MB in the end (delta: 107.0MB). Free memory was 217.8MB in the beginning and 399.7MB in the end (delta: -181.9MB). Peak memory consumption was 153.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 35]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 35). Cancelled while NwaCegarLoop was constructing difference of abstraction (2317states) and FLOYD_HOARE automaton (currently 9 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (5201 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 71.5s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 57.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1640 SdHoareTripleChecker+Valid, 56.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1640 mSDsluCounter, 1385 SdHoareTripleChecker+Invalid, 50.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 75 mSDsCounter, 922 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6416 IncrementalHoareTripleChecker+Invalid, 7338 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 922 mSolverCounterUnsat, 1310 mSDtfsCounter, 6416 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3143 GetRequests, 3122 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2317occurred in iteration=9, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 536 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 11.0s InterpolantComputationTime, 1911 NumberOfCodeBlocks, 1911 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 3141 ConstructedInterpolants, 0 QuantifiedInterpolants, 12041 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2369 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 3634/4234 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown