/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/recursive/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 06:05:21,196 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 06:05:21,270 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 06:05:21,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 06:05:21,279 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 06:05:21,302 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 06:05:21,302 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 06:05:21,302 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 06:05:21,303 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 06:05:21,306 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 06:05:21,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 06:05:21,307 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 06:05:21,307 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 06:05:21,308 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 06:05:21,308 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 06:05:21,309 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 06:05:21,309 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 06:05:21,309 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 06:05:21,309 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 06:05:21,309 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 06:05:21,310 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 06:05:21,310 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 06:05:21,310 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 06:05:21,310 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 06:05:21,310 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 06:05:21,310 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 06:05:21,311 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 06:05:21,311 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 06:05:21,311 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 06:05:21,311 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 06:05:21,312 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 06:05:21,312 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 06:05:21,312 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 06:05:21,312 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 06:05:21,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:05:21,312 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 06:05:21,313 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 06:05:21,313 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 06:05:21,313 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 06:05:21,313 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:21,313 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 06:05:21,313 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 06:05:21,313 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 06:05:21,313 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 06:05:21,314 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 06:05:21,314 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 06:05:21,314 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 06:05:21,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 06:05:21,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 06:05:21,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 06:05:21,536 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 06:05:21,536 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 06:05:21,538 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2023-12-25 06:05:22,680 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 06:05:22,851 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 06:05:22,852 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2023-12-25 06:05:22,857 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/291ceb127/99c7cfd057ce462ba82f8101c85dcdd0/FLAG8ca0934df [2023-12-25 06:05:22,868 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/291ceb127/99c7cfd057ce462ba82f8101c85dcdd0 [2023-12-25 06:05:22,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 06:05:22,872 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 06:05:22,874 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 06:05:22,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 06:05:22,878 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 06:05:22,879 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:05:22" (1/1) ... [2023-12-25 06:05:22,880 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@482c92bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:22, skipping insertion in model container [2023-12-25 06:05:22,880 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:05:22" (1/1) ... [2023-12-25 06:05:22,895 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 06:05:23,001 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd01-1.c[975,988] [2023-12-25 06:05:23,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:05:23,015 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 06:05:23,025 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd01-1.c[975,988] [2023-12-25 06:05:23,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:05:23,036 INFO L206 MainTranslator]: Completed translation [2023-12-25 06:05:23,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:23 WrapperNode [2023-12-25 06:05:23,037 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 06:05:23,037 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 06:05:23,037 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 06:05:23,038 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 06:05:23,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:23" (1/1) ... [2023-12-25 06:05:23,049 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:23" (1/1) ... [2023-12-25 06:05:23,068 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2023-12-25 06:05:23,069 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 06:05:23,069 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 06:05:23,069 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 06:05:23,069 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 06:05:23,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:23" (1/1) ... [2023-12-25 06:05:23,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:23" (1/1) ... [2023-12-25 06:05:23,080 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:23" (1/1) ... [2023-12-25 06:05:23,088 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-25 06:05:23,089 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:23" (1/1) ... [2023-12-25 06:05:23,089 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:23" (1/1) ... [2023-12-25 06:05:23,092 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:23" (1/1) ... [2023-12-25 06:05:23,093 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:23" (1/1) ... [2023-12-25 06:05:23,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:23" (1/1) ... [2023-12-25 06:05:23,095 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:23" (1/1) ... [2023-12-25 06:05:23,096 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 06:05:23,096 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 06:05:23,097 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 06:05:23,097 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 06:05:23,097 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:23" (1/1) ... [2023-12-25 06:05:23,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:05:23,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 06:05:23,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-25 06:05:23,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-25 06:05:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 06:05:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2023-12-25 06:05:23,158 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2023-12-25 06:05:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 06:05:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2023-12-25 06:05:23,160 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2023-12-25 06:05:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 06:05:23,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 06:05:23,211 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 06:05:23,215 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 06:05:23,312 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 06:05:23,339 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 06:05:23,339 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 06:05:23,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:05:23 BoogieIcfgContainer [2023-12-25 06:05:23,347 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 06:05:23,349 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 06:05:23,349 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 06:05:23,351 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 06:05:23,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 06:05:22" (1/3) ... [2023-12-25 06:05:23,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cfddd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:05:23, skipping insertion in model container [2023-12-25 06:05:23,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:23" (2/3) ... [2023-12-25 06:05:23,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cfddd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:05:23, skipping insertion in model container [2023-12-25 06:05:23,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:05:23" (3/3) ... [2023-12-25 06:05:23,353 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2023-12-25 06:05:23,368 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 06:05:23,369 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 06:05:23,400 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 06:05:23,405 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;@11b81348, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 06:05:23,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 06:05:23,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 06:05:23,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-25 06:05:23,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:23,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:23,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:23,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:23,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1415048223, now seen corresponding path program 1 times [2023-12-25 06:05:23,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:23,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159272718] [2023-12-25 06:05:23,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:23,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:23,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:23,428 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:05:23,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-25 06:05:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:23,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 06:05:23,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:23,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:05:23,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:05:23,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:23,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159272718] [2023-12-25 06:05:23,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159272718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:05:23,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:05:23,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 06:05:23,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469362364] [2023-12-25 06:05:23,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:05:23,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 06:05:23,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:23,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 06:05:23,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 06:05:23,638 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:05:23,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:23,763 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2023-12-25 06:05:23,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:05:23,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-12-25 06:05:23,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:23,771 INFO L225 Difference]: With dead ends: 33 [2023-12-25 06:05:23,771 INFO L226 Difference]: Without dead ends: 23 [2023-12-25 06:05:23,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-25 06:05:23,781 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 14 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:23,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 76 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:23,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-25 06:05:23,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-25 06:05:23,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-25 06:05:23,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-12-25 06:05:23,809 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2023-12-25 06:05:23,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:23,810 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-12-25 06:05:23,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:05:23,810 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-12-25 06:05:23,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-25 06:05:23,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:23,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:23,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:24,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:24,014 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:24,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:24,015 INFO L85 PathProgramCache]: Analyzing trace with hash -168268323, now seen corresponding path program 1 times [2023-12-25 06:05:24,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:24,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911316627] [2023-12-25 06:05:24,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:24,015 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:24,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:24,017 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:05:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:24,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 06:05:24,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:24,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-25 06:05:24,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:05:24,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:05:24,150 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:24,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911316627] [2023-12-25 06:05:24,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911316627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:05:24,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:05:24,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 06:05:24,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297187885] [2023-12-25 06:05:24,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:05:24,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 06:05:24,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:24,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 06:05:24,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 06:05:24,158 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:05:24,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:24,251 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2023-12-25 06:05:24,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:05:24,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-25 06:05:24,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:24,253 INFO L225 Difference]: With dead ends: 29 [2023-12-25 06:05:24,253 INFO L226 Difference]: Without dead ends: 25 [2023-12-25 06:05:24,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-25 06:05:24,255 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:24,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 75 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:05:24,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-25 06:05:24,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2023-12-25 06:05:24,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-25 06:05:24,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-12-25 06:05:24,265 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 11 [2023-12-25 06:05:24,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:24,266 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-12-25 06:05:24,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:05:24,267 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-12-25 06:05:24,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-25 06:05:24,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:24,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:24,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:24,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:24,493 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:24,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:24,494 INFO L85 PathProgramCache]: Analyzing trace with hash 236008797, now seen corresponding path program 1 times [2023-12-25 06:05:24,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:24,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774474072] [2023-12-25 06:05:24,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:24,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:24,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:24,498 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:05:24,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-25 06:05:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:24,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 06:05:24,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:24,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:05:24,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:05:24,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:24,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774474072] [2023-12-25 06:05:24,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774474072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:05:24,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:05:24,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 06:05:24,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962204217] [2023-12-25 06:05:24,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:05:24,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 06:05:24,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:24,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 06:05:24,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 06:05:24,598 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 06:05:24,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:24,659 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2023-12-25 06:05:24,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:05:24,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-12-25 06:05:24,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:24,660 INFO L225 Difference]: With dead ends: 37 [2023-12-25 06:05:24,660 INFO L226 Difference]: Without dead ends: 25 [2023-12-25 06:05:24,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-25 06:05:24,663 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:24,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 47 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:05:24,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-25 06:05:24,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2023-12-25 06:05:24,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-25 06:05:24,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-12-25 06:05:24,672 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2023-12-25 06:05:24,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:24,673 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-12-25 06:05:24,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 06:05:24,673 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-12-25 06:05:24,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-25 06:05:24,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:24,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:24,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:24,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:24,877 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:24,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:24,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1342568457, now seen corresponding path program 1 times [2023-12-25 06:05:24,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:24,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228322720] [2023-12-25 06:05:24,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:24,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:24,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:24,882 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:05:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:24,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 06:05:24,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:24,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-25 06:05:24,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:05:24,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:05:24,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:24,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228322720] [2023-12-25 06:05:24,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228322720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:05:24,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:05:24,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 06:05:24,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154094284] [2023-12-25 06:05:24,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:05:25,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 06:05:25,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:25,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 06:05:25,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-25 06:05:25,001 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 06:05:25,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:25,127 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2023-12-25 06:05:25,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 06:05:25,127 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-12-25 06:05:25,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:25,128 INFO L225 Difference]: With dead ends: 32 [2023-12-25 06:05:25,128 INFO L226 Difference]: Without dead ends: 28 [2023-12-25 06:05:25,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:05:25,129 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:25,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 75 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:25,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-25 06:05:25,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2023-12-25 06:05:25,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-25 06:05:25,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2023-12-25 06:05:25,133 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2023-12-25 06:05:25,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:25,133 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2023-12-25 06:05:25,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 06:05:25,134 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2023-12-25 06:05:25,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-25 06:05:25,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:25,134 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:25,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-25 06:05:25,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:25,337 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:25,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:25,337 INFO L85 PathProgramCache]: Analyzing trace with hash -246412613, now seen corresponding path program 1 times [2023-12-25 06:05:25,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:25,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706534989] [2023-12-25 06:05:25,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:25,338 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:25,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:25,342 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:05:25,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-25 06:05:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:25,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:05:25,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 06:05:25,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:05:25,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:25,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706534989] [2023-12-25 06:05:25,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706534989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:05:25,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:05:25,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:05:25,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693559909] [2023-12-25 06:05:25,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:05:25,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 06:05:25,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:25,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 06:05:25,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:05:25,413 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-25 06:05:25,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:25,444 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2023-12-25 06:05:25,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:05:25,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-12-25 06:05:25,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:25,445 INFO L225 Difference]: With dead ends: 38 [2023-12-25 06:05:25,446 INFO L226 Difference]: Without dead ends: 26 [2023-12-25 06:05:25,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:05:25,446 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:25,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 58 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:05:25,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-25 06:05:25,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-25 06:05:25,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-25 06:05:25,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-12-25 06:05:25,450 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 24 [2023-12-25 06:05:25,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:25,450 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-12-25 06:05:25,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-25 06:05:25,450 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2023-12-25 06:05:25,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-25 06:05:25,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:25,451 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] [2023-12-25 06:05:25,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:25,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:25,654 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:25,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:25,654 INFO L85 PathProgramCache]: Analyzing trace with hash -962722745, now seen corresponding path program 1 times [2023-12-25 06:05:25,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:25,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972235510] [2023-12-25 06:05:25,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:25,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:25,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:25,656 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:05:25,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-25 06:05:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:25,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 06:05:25,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:25,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-25 06:05:25,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 06:05:26,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:26,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972235510] [2023-12-25 06:05:26,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972235510] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:26,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:26,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2023-12-25 06:05:26,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587738308] [2023-12-25 06:05:26,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:26,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-25 06:05:26,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:26,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-25 06:05:26,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-25 06:05:26,174 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 14 states have internal predecessors, (31), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-25 06:05:26,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:26,376 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2023-12-25 06:05:26,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 06:05:26,376 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 14 states have internal predecessors, (31), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 25 [2023-12-25 06:05:26,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:26,377 INFO L225 Difference]: With dead ends: 38 [2023-12-25 06:05:26,377 INFO L226 Difference]: Without dead ends: 34 [2023-12-25 06:05:26,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2023-12-25 06:05:26,378 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:26,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 150 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:26,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-25 06:05:26,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2023-12-25 06:05:26,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-25 06:05:26,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-12-25 06:05:26,382 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 25 [2023-12-25 06:05:26,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:26,382 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-12-25 06:05:26,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 14 states have internal predecessors, (31), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-25 06:05:26,382 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-12-25 06:05:26,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-25 06:05:26,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:26,383 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:26,387 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 [2023-12-25 06:05:26,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:26,585 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:26,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:26,586 INFO L85 PathProgramCache]: Analyzing trace with hash -503357871, now seen corresponding path program 1 times [2023-12-25 06:05:26,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:26,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553877481] [2023-12-25 06:05:26,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:26,586 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:26,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:26,587 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:05:26,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-25 06:05:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:26,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 06:05:26,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:26,801 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-25 06:05:26,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:27,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 06:05:27,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:27,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553877481] [2023-12-25 06:05:27,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553877481] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:27,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:27,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 22 [2023-12-25 06:05:27,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008671693] [2023-12-25 06:05:27,240 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:27,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-25 06:05:27,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:27,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-25 06:05:27,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2023-12-25 06:05:27,241 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-25 06:05:27,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:27,513 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2023-12-25 06:05:27,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 06:05:27,513 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) Word has length 32 [2023-12-25 06:05:27,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:27,514 INFO L225 Difference]: With dead ends: 44 [2023-12-25 06:05:27,514 INFO L226 Difference]: Without dead ends: 40 [2023-12-25 06:05:27,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2023-12-25 06:05:27,515 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 20 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:27,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 151 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:27,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-25 06:05:27,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2023-12-25 06:05:27,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-25 06:05:27,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2023-12-25 06:05:27,519 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 32 [2023-12-25 06:05:27,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:27,519 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2023-12-25 06:05:27,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-25 06:05:27,519 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2023-12-25 06:05:27,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-25 06:05:27,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:27,520 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:27,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:27,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:27,721 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:27,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:27,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1867179313, now seen corresponding path program 2 times [2023-12-25 06:05:27,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:27,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489233864] [2023-12-25 06:05:27,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:05:27,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:27,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:27,724 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:05:27,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-25 06:05:27,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:05:27,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:27,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-25 06:05:27,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:28,010 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-25 06:05:28,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:28,874 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 06:05:28,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:28,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489233864] [2023-12-25 06:05:28,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489233864] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:28,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:28,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 33 [2023-12-25 06:05:28,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818892472] [2023-12-25 06:05:28,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:28,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-25 06:05:28,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:28,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-25 06:05:28,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 06:05:28,876 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 33 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 23 states have internal predecessors, (48), 8 states have call successors, (8), 1 states have call predecessors, (8), 10 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2023-12-25 06:05:29,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:29,265 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2023-12-25 06:05:29,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 06:05:29,265 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 23 states have internal predecessors, (48), 8 states have call successors, (8), 1 states have call predecessors, (8), 10 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) Word has length 39 [2023-12-25 06:05:29,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:29,266 INFO L225 Difference]: With dead ends: 50 [2023-12-25 06:05:29,266 INFO L226 Difference]: Without dead ends: 46 [2023-12-25 06:05:29,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=178, Invalid=1628, Unknown=0, NotChecked=0, Total=1806 [2023-12-25 06:05:29,267 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:29,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 259 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:05:29,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-25 06:05:29,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 35. [2023-12-25 06:05:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-25 06:05:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2023-12-25 06:05:29,271 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 39 [2023-12-25 06:05:29,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:29,271 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-12-25 06:05:29,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 23 states have internal predecessors, (48), 8 states have call successors, (8), 1 states have call predecessors, (8), 10 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2023-12-25 06:05:29,272 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2023-12-25 06:05:29,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-25 06:05:29,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:29,273 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:29,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-25 06:05:29,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:29,475 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:29,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:29,475 INFO L85 PathProgramCache]: Analyzing trace with hash -2003597525, now seen corresponding path program 2 times [2023-12-25 06:05:29,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:29,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589824836] [2023-12-25 06:05:29,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:05:29,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:29,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:29,477 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:05:29,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-25 06:05:29,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:05:29,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:29,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-25 06:05:29,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:29,798 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-25 06:05:29,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:30,873 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 06:05:30,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:30,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589824836] [2023-12-25 06:05:30,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589824836] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:30,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:30,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 37 [2023-12-25 06:05:30,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765771910] [2023-12-25 06:05:30,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:30,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-25 06:05:30,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:30,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-25 06:05:30,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1218, Unknown=0, NotChecked=0, Total=1332 [2023-12-25 06:05:30,876 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 37 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 25 states have internal predecessors, (55), 9 states have call successors, (9), 1 states have call predecessors, (9), 12 states have return successors, (12), 12 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-25 06:05:31,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:31,371 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2023-12-25 06:05:31,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 06:05:31,372 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 25 states have internal predecessors, (55), 9 states have call successors, (9), 1 states have call predecessors, (9), 12 states have return successors, (12), 12 states have call predecessors, (12), 9 states have call successors, (12) Word has length 46 [2023-12-25 06:05:31,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:31,372 INFO L225 Difference]: With dead ends: 56 [2023-12-25 06:05:31,372 INFO L226 Difference]: Without dead ends: 52 [2023-12-25 06:05:31,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=221, Invalid=2229, Unknown=0, NotChecked=0, Total=2450 [2023-12-25 06:05:31,374 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:31,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 267 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:05:31,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-25 06:05:31,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2023-12-25 06:05:31,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-25 06:05:31,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2023-12-25 06:05:31,378 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 46 [2023-12-25 06:05:31,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:31,378 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2023-12-25 06:05:31,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 25 states have internal predecessors, (55), 9 states have call successors, (9), 1 states have call predecessors, (9), 12 states have return successors, (12), 12 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-25 06:05:31,378 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2023-12-25 06:05:31,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-25 06:05:31,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:31,379 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:31,381 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 (10)] Ended with exit code 0 [2023-12-25 06:05:31,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:31,581 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:31,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:31,582 INFO L85 PathProgramCache]: Analyzing trace with hash -48123749, now seen corresponding path program 3 times [2023-12-25 06:05:31,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:31,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114302384] [2023-12-25 06:05:31,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:05:31,582 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:31,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:31,583 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:05:31,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-25 06:05:31,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 06:05:31,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:31,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-25 06:05:31,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:31,895 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-25 06:05:31,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:33,247 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-25 06:05:33,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:33,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114302384] [2023-12-25 06:05:33,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114302384] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:33,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:33,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24] total 42 [2023-12-25 06:05:33,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889349973] [2023-12-25 06:05:33,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:33,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-25 06:05:33,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:33,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-25 06:05:33,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1590, Unknown=0, NotChecked=0, Total=1722 [2023-12-25 06:05:33,249 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 42 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 28 states have internal predecessors, (62), 10 states have call successors, (10), 1 states have call predecessors, (10), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2023-12-25 06:05:33,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:33,760 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2023-12-25 06:05:33,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-25 06:05:33,760 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 28 states have internal predecessors, (62), 10 states have call successors, (10), 1 states have call predecessors, (10), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) Word has length 53 [2023-12-25 06:05:33,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:33,761 INFO L225 Difference]: With dead ends: 62 [2023-12-25 06:05:33,761 INFO L226 Difference]: Without dead ends: 58 [2023-12-25 06:05:33,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=253, Invalid=2827, Unknown=0, NotChecked=0, Total=3080 [2023-12-25 06:05:33,763 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 23 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:33,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 287 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:05:33,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-25 06:05:33,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 41. [2023-12-25 06:05:33,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 9 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-25 06:05:33,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2023-12-25 06:05:33,767 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 53 [2023-12-25 06:05:33,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:33,767 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2023-12-25 06:05:33,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 28 states have internal predecessors, (62), 10 states have call successors, (10), 1 states have call predecessors, (10), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2023-12-25 06:05:33,767 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2023-12-25 06:05:33,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-25 06:05:33,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:33,768 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:33,771 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 (11)] Ended with exit code 0 [2023-12-25 06:05:33,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:33,970 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:33,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:33,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2001067387, now seen corresponding path program 3 times [2023-12-25 06:05:33,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:33,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233641461] [2023-12-25 06:05:33,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:05:33,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:33,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:33,973 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:05:33,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-25 06:05:34,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 06:05:34,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:34,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-25 06:05:34,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:34,366 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-25 06:05:34,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:36,148 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-25 06:05:36,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:36,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233641461] [2023-12-25 06:05:36,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233641461] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:36,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:36,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 28] total 48 [2023-12-25 06:05:36,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695572876] [2023-12-25 06:05:36,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:36,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-25 06:05:36,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:36,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-25 06:05:36,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2101, Unknown=0, NotChecked=0, Total=2256 [2023-12-25 06:05:36,151 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 48 states, 46 states have (on average 1.5) internal successors, (69), 32 states have internal predecessors, (69), 11 states have call successors, (11), 1 states have call predecessors, (11), 16 states have return successors, (16), 16 states have call predecessors, (16), 11 states have call successors, (16) [2023-12-25 06:05:36,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:36,897 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2023-12-25 06:05:36,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-25 06:05:36,897 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 46 states have (on average 1.5) internal successors, (69), 32 states have internal predecessors, (69), 11 states have call successors, (11), 1 states have call predecessors, (11), 16 states have return successors, (16), 16 states have call predecessors, (16), 11 states have call successors, (16) Word has length 60 [2023-12-25 06:05:36,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:36,898 INFO L225 Difference]: With dead ends: 68 [2023-12-25 06:05:36,898 INFO L226 Difference]: Without dead ends: 64 [2023-12-25 06:05:36,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=314, Invalid=3846, Unknown=0, NotChecked=0, Total=4160 [2023-12-25 06:05:36,900 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 30 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:36,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 421 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:05:36,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-25 06:05:36,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 44. [2023-12-25 06:05:36,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 10 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-25 06:05:36,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2023-12-25 06:05:36,903 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 60 [2023-12-25 06:05:36,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:36,904 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2023-12-25 06:05:36,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 46 states have (on average 1.5) internal successors, (69), 32 states have internal predecessors, (69), 11 states have call successors, (11), 1 states have call predecessors, (11), 16 states have return successors, (16), 16 states have call predecessors, (16), 11 states have call successors, (16) [2023-12-25 06:05:36,904 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2023-12-25 06:05:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-25 06:05:36,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:36,905 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:36,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:37,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:37,106 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:37,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:37,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1494415739, now seen corresponding path program 4 times [2023-12-25 06:05:37,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:37,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253437350] [2023-12-25 06:05:37,107 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:05:37,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:37,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:37,108 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:05:37,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-25 06:05:37,165 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:05:37,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:37,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-25 06:05:37,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:37,561 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-25 06:05:37,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-25 06:05:39,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:39,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253437350] [2023-12-25 06:05:39,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253437350] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:39,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:39,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 30] total 37 [2023-12-25 06:05:39,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523381567] [2023-12-25 06:05:39,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:39,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-25 06:05:39,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:39,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-25 06:05:39,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1216, Unknown=0, NotChecked=0, Total=1332 [2023-12-25 06:05:39,092 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 37 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 26 states have internal predecessors, (61), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (18), 11 states have call predecessors, (18), 12 states have call successors, (18) [2023-12-25 06:05:39,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:39,716 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2023-12-25 06:05:39,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-25 06:05:39,716 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 26 states have internal predecessors, (61), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (18), 11 states have call predecessors, (18), 12 states have call successors, (18) Word has length 67 [2023-12-25 06:05:39,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:39,717 INFO L225 Difference]: With dead ends: 74 [2023-12-25 06:05:39,717 INFO L226 Difference]: Without dead ends: 70 [2023-12-25 06:05:39,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=275, Invalid=2695, Unknown=0, NotChecked=0, Total=2970 [2023-12-25 06:05:39,718 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:39,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 336 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:05:39,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-25 06:05:39,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 47. [2023-12-25 06:05:39,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.0625) internal successors, (34), 33 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-25 06:05:39,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2023-12-25 06:05:39,724 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 67 [2023-12-25 06:05:39,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:39,724 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2023-12-25 06:05:39,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 26 states have internal predecessors, (61), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (18), 11 states have call predecessors, (18), 12 states have call successors, (18) [2023-12-25 06:05:39,724 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2023-12-25 06:05:39,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-25 06:05:39,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:39,725 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:39,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:39,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:39,928 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:39,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:39,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1411305567, now seen corresponding path program 4 times [2023-12-25 06:05:39,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:39,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75766265] [2023-12-25 06:05:39,929 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:05:39,929 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:39,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:39,930 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:05:39,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-25 06:05:40,009 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:05:40,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:40,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-25 06:05:40,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:40,426 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-25 06:05:40,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-25 06:05:42,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:42,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75766265] [2023-12-25 06:05:42,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75766265] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:42,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:42,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 33] total 40 [2023-12-25 06:05:42,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553812891] [2023-12-25 06:05:42,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:42,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-25 06:05:42,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:42,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-25 06:05:42,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1433, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 06:05:42,197 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 40 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 28 states have internal predecessors, (66), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (20), 12 states have call predecessors, (20), 13 states have call successors, (20) [2023-12-25 06:05:42,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:42,923 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2023-12-25 06:05:42,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-25 06:05:42,923 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 28 states have internal predecessors, (66), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (20), 12 states have call predecessors, (20), 13 states have call successors, (20) Word has length 74 [2023-12-25 06:05:42,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:42,924 INFO L225 Difference]: With dead ends: 80 [2023-12-25 06:05:42,924 INFO L226 Difference]: Without dead ends: 76 [2023-12-25 06:05:42,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=327, Invalid=3333, Unknown=0, NotChecked=0, Total=3660 [2023-12-25 06:05:42,925 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:42,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 356 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:05:42,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-25 06:05:42,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 50. [2023-12-25 06:05:42,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-25 06:05:42,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2023-12-25 06:05:42,932 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 74 [2023-12-25 06:05:42,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:42,932 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2023-12-25 06:05:42,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 28 states have internal predecessors, (66), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (20), 12 states have call predecessors, (20), 13 states have call successors, (20) [2023-12-25 06:05:42,932 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2023-12-25 06:05:42,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-25 06:05:42,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:42,934 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:42,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:43,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:43,137 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:43,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:43,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1222670609, now seen corresponding path program 5 times [2023-12-25 06:05:43,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:43,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [969362758] [2023-12-25 06:05:43,138 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:05:43,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:43,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:43,139 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:05:43,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-25 06:05:43,200 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-25 06:05:43,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:43,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-25 06:05:43,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:43,725 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-25 06:05:43,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-25 06:05:45,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:45,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [969362758] [2023-12-25 06:05:45,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [969362758] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:45,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:45,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 36] total 43 [2023-12-25 06:05:45,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5310558] [2023-12-25 06:05:45,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:45,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-25 06:05:45,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:45,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-25 06:05:45,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1668, Unknown=0, NotChecked=0, Total=1806 [2023-12-25 06:05:45,859 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 43 states, 42 states have (on average 1.6904761904761905) internal successors, (71), 30 states have internal predecessors, (71), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (22), 13 states have call predecessors, (22), 14 states have call successors, (22) [2023-12-25 06:05:46,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:46,712 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2023-12-25 06:05:46,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-25 06:05:46,713 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.6904761904761905) internal successors, (71), 30 states have internal predecessors, (71), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (22), 13 states have call predecessors, (22), 14 states have call successors, (22) Word has length 81 [2023-12-25 06:05:46,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:46,713 INFO L225 Difference]: With dead ends: 86 [2023-12-25 06:05:46,713 INFO L226 Difference]: Without dead ends: 82 [2023-12-25 06:05:46,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=354, Invalid=3806, Unknown=0, NotChecked=0, Total=4160 [2023-12-25 06:05:46,715 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 26 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:46,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 483 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:05:46,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-25 06:05:46,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 53. [2023-12-25 06:05:46,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 37 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 13 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-25 06:05:46,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2023-12-25 06:05:46,720 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 81 [2023-12-25 06:05:46,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:46,721 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2023-12-25 06:05:46,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.6904761904761905) internal successors, (71), 30 states have internal predecessors, (71), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (22), 13 states have call predecessors, (22), 14 states have call successors, (22) [2023-12-25 06:05:46,721 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2023-12-25 06:05:46,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-25 06:05:46,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:46,722 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:46,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-25 06:05:46,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:46,923 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:46,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:46,923 INFO L85 PathProgramCache]: Analyzing trace with hash 51720377, now seen corresponding path program 5 times [2023-12-25 06:05:46,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:46,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85011982] [2023-12-25 06:05:46,923 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:05:46,923 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:46,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:46,924 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:05:46,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-25 06:05:47,038 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-25 06:05:47,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:47,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-25 06:05:47,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-25 06:05:47,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 06:05:50,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:50,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85011982] [2023-12-25 06:05:50,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85011982] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:50,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:50,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 39] total 46 [2023-12-25 06:05:50,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81138715] [2023-12-25 06:05:50,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:50,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-25 06:05:50,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:50,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-25 06:05:50,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1921, Unknown=0, NotChecked=0, Total=2070 [2023-12-25 06:05:50,424 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 46 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 32 states have internal predecessors, (76), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (24), 14 states have call predecessors, (24), 15 states have call successors, (24) [2023-12-25 06:05:51,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:51,458 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2023-12-25 06:05:51,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-25 06:05:51,458 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 32 states have internal predecessors, (76), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (24), 14 states have call predecessors, (24), 15 states have call successors, (24) Word has length 88 [2023-12-25 06:05:51,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:51,459 INFO L225 Difference]: With dead ends: 92 [2023-12-25 06:05:51,459 INFO L226 Difference]: Without dead ends: 88 [2023-12-25 06:05:51,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=412, Invalid=4558, Unknown=0, NotChecked=0, Total=4970 [2023-12-25 06:05:51,463 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 62 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:51,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 405 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:05:51,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-25 06:05:51,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 56. [2023-12-25 06:05:51,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 39 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 14 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-25 06:05:51,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2023-12-25 06:05:51,478 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 88 [2023-12-25 06:05:51,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:51,479 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2023-12-25 06:05:51,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 32 states have internal predecessors, (76), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (24), 14 states have call predecessors, (24), 15 states have call successors, (24) [2023-12-25 06:05:51,480 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2023-12-25 06:05:51,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-25 06:05:51,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:51,481 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:51,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:51,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:51,684 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:51,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:51,685 INFO L85 PathProgramCache]: Analyzing trace with hash -170667559, now seen corresponding path program 6 times [2023-12-25 06:05:51,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:51,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536318964] [2023-12-25 06:05:51,685 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:05:51,685 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 [2023-12-25 06:05:51,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:51,686 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:05:51,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-25 06:05:51,767 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-25 06:05:51,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:51,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-25 06:05:51,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:52,357 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-25 06:05:52,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:56,312 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-25 06:05:56,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:56,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536318964] [2023-12-25 06:05:56,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536318964] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:56,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:56,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 42] total 72 [2023-12-25 06:05:56,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098009614] [2023-12-25 06:05:56,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:56,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-12-25 06:05:56,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:56,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-12-25 06:05:56,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=4872, Unknown=0, NotChecked=0, Total=5112 [2023-12-25 06:05:56,315 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 72 states, 71 states have (on average 1.4647887323943662) internal successors, (104), 46 states have internal predecessors, (104), 16 states have call successors, (16), 1 states have call predecessors, (16), 26 states have return successors, (26), 26 states have call predecessors, (26), 16 states have call successors, (26) [2023-12-25 06:05:57,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:57,732 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2023-12-25 06:05:57,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-25 06:05:57,733 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.4647887323943662) internal successors, (104), 46 states have internal predecessors, (104), 16 states have call successors, (16), 1 states have call predecessors, (16), 26 states have return successors, (26), 26 states have call predecessors, (26), 16 states have call successors, (26) Word has length 95 [2023-12-25 06:05:57,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:57,733 INFO L225 Difference]: With dead ends: 98 [2023-12-25 06:05:57,733 INFO L226 Difference]: Without dead ends: 94 [2023-12-25 06:05:57,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1521 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=544, Invalid=8962, Unknown=0, NotChecked=0, Total=9506 [2023-12-25 06:05:57,736 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 73 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:57,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 785 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:05:57,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-25 06:05:57,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 59. [2023-12-25 06:05:57,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 15 states have return successors, (16), 15 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-25 06:05:57,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2023-12-25 06:05:57,739 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 95 [2023-12-25 06:05:57,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:57,739 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2023-12-25 06:05:57,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.4647887323943662) internal successors, (104), 46 states have internal predecessors, (104), 16 states have call successors, (16), 1 states have call predecessors, (16), 26 states have return successors, (26), 26 states have call predecessors, (26), 16 states have call successors, (26) [2023-12-25 06:05:57,739 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2023-12-25 06:05:57,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-25 06:05:57,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:57,740 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:57,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-25 06:05:57,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:57,941 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:57,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:57,941 INFO L85 PathProgramCache]: Analyzing trace with hash -291970157, now seen corresponding path program 6 times [2023-12-25 06:05:57,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:57,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208774254] [2023-12-25 06:05:57,942 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:05:57,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:57,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:57,969 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:05:58,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-25 06:05:58,055 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-25 06:05:58,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:58,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-25 06:05:58,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-25 06:05:58,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:02,844 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-25 06:06:02,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:02,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208774254] [2023-12-25 06:06:02,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208774254] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:06:02,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:02,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 46] total 78 [2023-12-25 06:06:02,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367328657] [2023-12-25 06:06:02,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:02,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2023-12-25 06:06:02,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:02,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2023-12-25 06:06:02,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=5743, Unknown=0, NotChecked=0, Total=6006 [2023-12-25 06:06:02,847 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 78 states, 76 states have (on average 1.4605263157894737) internal successors, (111), 50 states have internal predecessors, (111), 17 states have call successors, (17), 1 states have call predecessors, (17), 28 states have return successors, (28), 28 states have call predecessors, (28), 17 states have call successors, (28) [2023-12-25 06:06:04,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:04,567 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2023-12-25 06:06:04,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-25 06:06:04,567 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 76 states have (on average 1.4605263157894737) internal successors, (111), 50 states have internal predecessors, (111), 17 states have call successors, (17), 1 states have call predecessors, (17), 28 states have return successors, (28), 28 states have call predecessors, (28), 17 states have call successors, (28) Word has length 102 [2023-12-25 06:06:04,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:04,568 INFO L225 Difference]: With dead ends: 104 [2023-12-25 06:06:04,568 INFO L226 Difference]: Without dead ends: 100 [2023-12-25 06:06:04,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1905 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=623, Invalid=10719, Unknown=0, NotChecked=0, Total=11342 [2023-12-25 06:06:04,570 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 53 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:04,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1004 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 06:06:04,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-25 06:06:04,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 62. [2023-12-25 06:06:04,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 43 states have internal predecessors, (44), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 16 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-25 06:06:04,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2023-12-25 06:06:04,573 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 102 [2023-12-25 06:06:04,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:04,573 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2023-12-25 06:06:04,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 76 states have (on average 1.4605263157894737) internal successors, (111), 50 states have internal predecessors, (111), 17 states have call successors, (17), 1 states have call predecessors, (17), 28 states have return successors, (28), 28 states have call predecessors, (28), 17 states have call successors, (28) [2023-12-25 06:06:04,573 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2023-12-25 06:06:04,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-25 06:06:04,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:04,574 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:04,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-25 06:06:04,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:06:04,778 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:04,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:04,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1832089789, now seen corresponding path program 7 times [2023-12-25 06:06:04,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:04,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625899763] [2023-12-25 06:06:04,778 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:06:04,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:06:04,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:04,779 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:06:04,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-25 06:06:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:06:04,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-25 06:06:04,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:05,712 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-12-25 06:06:05,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:09,284 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-25 06:06:09,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:09,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625899763] [2023-12-25 06:06:09,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625899763] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:06:09,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:09,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 48] total 55 [2023-12-25 06:06:09,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476066873] [2023-12-25 06:06:09,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:09,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-25 06:06:09,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:09,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-25 06:06:09,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2788, Unknown=0, NotChecked=0, Total=2970 [2023-12-25 06:06:09,287 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 55 states, 54 states have (on average 1.6851851851851851) internal successors, (91), 38 states have internal predecessors, (91), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (30), 17 states have call predecessors, (30), 18 states have call successors, (30) [2023-12-25 06:06:10,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:10,691 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2023-12-25 06:06:10,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-25 06:06:10,691 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.6851851851851851) internal successors, (91), 38 states have internal predecessors, (91), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (30), 17 states have call predecessors, (30), 18 states have call successors, (30) Word has length 109 [2023-12-25 06:06:10,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:10,692 INFO L225 Difference]: With dead ends: 110 [2023-12-25 06:06:10,692 INFO L226 Difference]: Without dead ends: 106 [2023-12-25 06:06:10,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=536, Invalid=6604, Unknown=0, NotChecked=0, Total=7140 [2023-12-25 06:06:10,694 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 38 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:10,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 856 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:06:10,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-25 06:06:10,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 65. [2023-12-25 06:06:10,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 45 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 17 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-25 06:06:10,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2023-12-25 06:06:10,697 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 109 [2023-12-25 06:06:10,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:10,697 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2023-12-25 06:06:10,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.6851851851851851) internal successors, (91), 38 states have internal predecessors, (91), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (30), 17 states have call predecessors, (30), 18 states have call successors, (30) [2023-12-25 06:06:10,697 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2023-12-25 06:06:10,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-25 06:06:10,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:10,698 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:10,701 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 (19)] Forceful destruction successful, exit code 0 [2023-12-25 06:06:10,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:06:10,901 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:10,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:10,902 INFO L85 PathProgramCache]: Analyzing trace with hash -900888339, now seen corresponding path program 7 times [2023-12-25 06:06:10,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:10,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278517060] [2023-12-25 06:06:10,902 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:06:10,902 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:06:10,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:10,903 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:06:10,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-25 06:06:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:06:11,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 69 conjunts are in the unsatisfiable core [2023-12-25 06:06:11,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-25 06:06:11,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 322 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-25 06:06:16,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:16,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278517060] [2023-12-25 06:06:16,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278517060] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:06:16,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:16,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 51] total 58 [2023-12-25 06:06:16,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859841345] [2023-12-25 06:06:16,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:16,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-25 06:06:16,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:16,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-25 06:06:16,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=3113, Unknown=0, NotChecked=0, Total=3306 [2023-12-25 06:06:16,159 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 58 states, 57 states have (on average 1.6842105263157894) internal successors, (96), 40 states have internal predecessors, (96), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (32), 18 states have call predecessors, (32), 19 states have call successors, (32) [2023-12-25 06:06:17,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:17,348 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2023-12-25 06:06:17,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-25 06:06:17,348 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.6842105263157894) internal successors, (96), 40 states have internal predecessors, (96), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (32), 18 states have call predecessors, (32), 19 states have call successors, (32) Word has length 116 [2023-12-25 06:06:17,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:17,351 INFO L225 Difference]: With dead ends: 116 [2023-12-25 06:06:17,351 INFO L226 Difference]: Without dead ends: 112 [2023-12-25 06:06:17,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=606, Invalid=7584, Unknown=0, NotChecked=0, Total=8190 [2023-12-25 06:06:17,353 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 41 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 1502 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:17,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 805 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1502 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:06:17,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-25 06:06:17,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 68. [2023-12-25 06:06:17,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 18 states have return successors, (19), 18 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-25 06:06:17,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2023-12-25 06:06:17,357 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 116 [2023-12-25 06:06:17,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:17,357 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2023-12-25 06:06:17,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.6842105263157894) internal successors, (96), 40 states have internal predecessors, (96), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (32), 18 states have call predecessors, (32), 19 states have call successors, (32) [2023-12-25 06:06:17,358 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2023-12-25 06:06:17,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-25 06:06:17,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:17,358 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:17,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-25 06:06:17,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:06:17,562 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:17,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:17,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1888205011, now seen corresponding path program 8 times [2023-12-25 06:06:17,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:17,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013298209] [2023-12-25 06:06:17,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:06:17,563 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:06:17,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:17,564 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:06:17,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-25 06:06:17,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:06:17,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:17,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-25 06:06:17,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:18,688 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-25 06:06:18,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 368 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-25 06:06:25,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:25,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013298209] [2023-12-25 06:06:25,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013298209] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:06:25,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:25,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 55] total 93 [2023-12-25 06:06:25,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826379171] [2023-12-25 06:06:25,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:25,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2023-12-25 06:06:25,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:25,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2023-12-25 06:06:25,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=8239, Unknown=0, NotChecked=0, Total=8556 [2023-12-25 06:06:25,006 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 93 states, 91 states have (on average 1.4505494505494505) internal successors, (132), 59 states have internal predecessors, (132), 20 states have call successors, (20), 1 states have call predecessors, (20), 34 states have return successors, (34), 34 states have call predecessors, (34), 20 states have call successors, (34) [2023-12-25 06:06:27,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:27,388 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2023-12-25 06:06:27,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-25 06:06:27,389 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 91 states have (on average 1.4505494505494505) internal successors, (132), 59 states have internal predecessors, (132), 20 states have call successors, (20), 1 states have call predecessors, (20), 34 states have return successors, (34), 34 states have call predecessors, (34), 20 states have call successors, (34) Word has length 123 [2023-12-25 06:06:27,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:27,389 INFO L225 Difference]: With dead ends: 122 [2023-12-25 06:06:27,389 INFO L226 Difference]: Without dead ends: 118 [2023-12-25 06:06:27,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2748 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=784, Invalid=15218, Unknown=0, NotChecked=0, Total=16002 [2023-12-25 06:06:27,404 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 51 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:27,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1167 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 06:06:27,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-25 06:06:27,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 71. [2023-12-25 06:06:27,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 49 states have internal predecessors, (50), 3 states have call successors, (3), 2 states have call predecessors, (3), 19 states have return successors, (20), 19 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-25 06:06:27,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2023-12-25 06:06:27,408 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 123 [2023-12-25 06:06:27,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:27,408 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2023-12-25 06:06:27,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 91 states have (on average 1.4505494505494505) internal successors, (132), 59 states have internal predecessors, (132), 20 states have call successors, (20), 1 states have call predecessors, (20), 34 states have return successors, (34), 34 states have call predecessors, (34), 20 states have call successors, (34) [2023-12-25 06:06:27,409 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2023-12-25 06:06:27,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-25 06:06:27,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:27,409 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:27,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-25 06:06:27,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:06:27,624 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:27,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:27,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1048494279, now seen corresponding path program 8 times [2023-12-25 06:06:27,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:27,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536549331] [2023-12-25 06:06:27,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:06:27,625 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:06:27,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:27,626 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:06:27,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-25 06:06:27,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:06:27,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:27,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-25 06:06:27,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-12-25 06:06:28,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:35,066 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-25 06:06:35,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:35,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536549331] [2023-12-25 06:06:35,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536549331] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:06:35,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:35,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 58] total 98 [2023-12-25 06:06:35,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102365467] [2023-12-25 06:06:35,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:35,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-12-25 06:06:35,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:35,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-12-25 06:06:35,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=9171, Unknown=0, NotChecked=0, Total=9506 [2023-12-25 06:06:35,069 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 98 states, 96 states have (on average 1.4479166666666667) internal successors, (139), 62 states have internal predecessors, (139), 21 states have call successors, (21), 1 states have call predecessors, (21), 36 states have return successors, (36), 36 states have call predecessors, (36), 21 states have call successors, (36) [2023-12-25 06:06:37,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:37,183 INFO L93 Difference]: Finished difference Result 128 states and 130 transitions. [2023-12-25 06:06:37,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-25 06:06:37,184 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 96 states have (on average 1.4479166666666667) internal successors, (139), 62 states have internal predecessors, (139), 21 states have call successors, (21), 1 states have call predecessors, (21), 36 states have return successors, (36), 36 states have call predecessors, (36), 21 states have call successors, (36) Word has length 130 [2023-12-25 06:06:37,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:37,185 INFO L225 Difference]: With dead ends: 128 [2023-12-25 06:06:37,185 INFO L226 Difference]: Without dead ends: 124 [2023-12-25 06:06:37,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3115 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=869, Invalid=17221, Unknown=0, NotChecked=0, Total=18090 [2023-12-25 06:06:37,188 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 37 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 2745 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:37,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 1401 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2745 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 06:06:37,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-25 06:06:37,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 74. [2023-12-25 06:06:37,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.04) internal successors, (52), 51 states have internal predecessors, (52), 3 states have call successors, (3), 2 states have call predecessors, (3), 20 states have return successors, (21), 20 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-25 06:06:37,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2023-12-25 06:06:37,191 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 130 [2023-12-25 06:06:37,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:37,191 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2023-12-25 06:06:37,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 96 states have (on average 1.4479166666666667) internal successors, (139), 62 states have internal predecessors, (139), 21 states have call successors, (21), 1 states have call predecessors, (21), 36 states have return successors, (36), 36 states have call predecessors, (36), 21 states have call successors, (36) [2023-12-25 06:06:37,192 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2023-12-25 06:06:37,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-25 06:06:37,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:37,192 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:37,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-25 06:06:37,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:06:37,410 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:37,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:37,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1461866089, now seen corresponding path program 9 times [2023-12-25 06:06:37,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:37,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406389197] [2023-12-25 06:06:37,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:06:37,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:06:37,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:37,412 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:06:37,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-25 06:06:37,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-25 06:06:37,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:37,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-25 06:06:37,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:38,671 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-12-25 06:06:38,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-25 06:06:46,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:46,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406389197] [2023-12-25 06:06:46,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406389197] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:06:46,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:46,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 60] total 102 [2023-12-25 06:06:46,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245828933] [2023-12-25 06:06:46,232 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:46,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2023-12-25 06:06:46,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:46,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2023-12-25 06:06:46,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=9954, Unknown=0, NotChecked=0, Total=10302 [2023-12-25 06:06:46,234 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 102 states, 101 states have (on average 1.4455445544554455) internal successors, (146), 64 states have internal predecessors, (146), 22 states have call successors, (22), 1 states have call predecessors, (22), 38 states have return successors, (38), 38 states have call predecessors, (38), 22 states have call successors, (38) [2023-12-25 06:06:49,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:49,014 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2023-12-25 06:06:49,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-25 06:06:49,017 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 1.4455445544554455) internal successors, (146), 64 states have internal predecessors, (146), 22 states have call successors, (22), 1 states have call predecessors, (22), 38 states have return successors, (38), 38 states have call predecessors, (38), 22 states have call successors, (38) Word has length 137 [2023-12-25 06:06:49,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:49,018 INFO L225 Difference]: With dead ends: 134 [2023-12-25 06:06:49,018 INFO L226 Difference]: Without dead ends: 130 [2023-12-25 06:06:49,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3276 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=907, Invalid=18553, Unknown=0, NotChecked=0, Total=19460 [2023-12-25 06:06:49,020 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 85 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 2588 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 2641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:49,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1398 Invalid, 2641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2588 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 06:06:49,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-25 06:06:49,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 77. [2023-12-25 06:06:49,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 3 states have call successors, (3), 2 states have call predecessors, (3), 21 states have return successors, (22), 21 states have call predecessors, (22), 3 states have call successors, (22) [2023-12-25 06:06:49,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2023-12-25 06:06:49,024 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 137 [2023-12-25 06:06:49,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:49,024 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2023-12-25 06:06:49,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 1.4455445544554455) internal successors, (146), 64 states have internal predecessors, (146), 22 states have call successors, (22), 1 states have call predecessors, (22), 38 states have return successors, (38), 38 states have call predecessors, (38), 22 states have call successors, (38) [2023-12-25 06:06:49,024 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2023-12-25 06:06:49,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-25 06:06:49,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:49,025 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:49,052 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 (23)] Ended with exit code 0 [2023-12-25 06:06:49,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:06:49,246 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:49,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:49,246 INFO L85 PathProgramCache]: Analyzing trace with hash 35662625, now seen corresponding path program 9 times [2023-12-25 06:06:49,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:49,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424451563] [2023-12-25 06:06:49,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:06:49,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:06:49,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:49,249 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:06:49,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-25 06:06:49,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-25 06:06:49,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:49,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 86 conjunts are in the unsatisfiable core [2023-12-25 06:06:49,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2023-12-25 06:06:50,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:59,370 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 522 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-25 06:06:59,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:59,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424451563] [2023-12-25 06:06:59,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424451563] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:06:59,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:59,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 64] total 108 [2023-12-25 06:06:59,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942794706] [2023-12-25 06:06:59,371 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:59,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2023-12-25 06:06:59,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:59,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2023-12-25 06:06:59,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=11185, Unknown=0, NotChecked=0, Total=11556 [2023-12-25 06:06:59,373 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 108 states, 106 states have (on average 1.4433962264150944) internal successors, (153), 68 states have internal predecessors, (153), 23 states have call successors, (23), 1 states have call predecessors, (23), 40 states have return successors, (40), 40 states have call predecessors, (40), 23 states have call successors, (40) [2023-12-25 06:07:02,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:02,744 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2023-12-25 06:07:02,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-25 06:07:02,744 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 106 states have (on average 1.4433962264150944) internal successors, (153), 68 states have internal predecessors, (153), 23 states have call successors, (23), 1 states have call predecessors, (23), 40 states have return successors, (40), 40 states have call predecessors, (40), 23 states have call successors, (40) Word has length 144 [2023-12-25 06:07:02,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:02,745 INFO L225 Difference]: With dead ends: 140 [2023-12-25 06:07:02,745 INFO L226 Difference]: Without dead ends: 136 [2023-12-25 06:07:02,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3831 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1004, Invalid=21048, Unknown=0, NotChecked=0, Total=22052 [2023-12-25 06:07:02,747 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 83 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 3536 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 3569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:02,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 1787 Invalid, 3569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3536 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-25 06:07:02,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-25 06:07:02,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 80. [2023-12-25 06:07:02,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 54 states have (on average 1.037037037037037) internal successors, (56), 55 states have internal predecessors, (56), 3 states have call successors, (3), 2 states have call predecessors, (3), 22 states have return successors, (23), 22 states have call predecessors, (23), 3 states have call successors, (23) [2023-12-25 06:07:02,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2023-12-25 06:07:02,750 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 144 [2023-12-25 06:07:02,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:02,751 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2023-12-25 06:07:02,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 106 states have (on average 1.4433962264150944) internal successors, (153), 68 states have internal predecessors, (153), 23 states have call successors, (23), 1 states have call predecessors, (23), 40 states have return successors, (40), 40 states have call predecessors, (40), 23 states have call successors, (40) [2023-12-25 06:07:02,751 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2023-12-25 06:07:02,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-25 06:07:02,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:02,752 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:02,757 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 (24)] Forceful destruction successful, exit code 0 [2023-12-25 06:07:02,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:07:02,955 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:02,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:02,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1044158847, now seen corresponding path program 10 times [2023-12-25 06:07:02,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:02,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143591202] [2023-12-25 06:07:02,956 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:07:02,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:07:02,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:02,957 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:07:02,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-25 06:07:03,142 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:07:03,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:03,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 89 conjunts are in the unsatisfiable core [2023-12-25 06:07:03,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2023-12-25 06:07:04,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:10,797 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-25 06:07:10,797 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:10,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143591202] [2023-12-25 06:07:10,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143591202] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:10,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:10,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 66] total 73 [2023-12-25 06:07:10,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708388374] [2023-12-25 06:07:10,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:10,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-12-25 06:07:10,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:10,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-12-25 06:07:10,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=5008, Unknown=0, NotChecked=0, Total=5256 [2023-12-25 06:07:10,799 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand has 73 states, 72 states have (on average 1.6805555555555556) internal successors, (121), 50 states have internal predecessors, (121), 24 states have call successors, (24), 1 states have call predecessors, (24), 22 states have return successors, (42), 23 states have call predecessors, (42), 24 states have call successors, (42) [2023-12-25 06:07:13,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:13,157 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2023-12-25 06:07:13,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-25 06:07:13,158 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 1.6805555555555556) internal successors, (121), 50 states have internal predecessors, (121), 24 states have call successors, (24), 1 states have call predecessors, (24), 22 states have return successors, (42), 23 states have call predecessors, (42), 24 states have call successors, (42) Word has length 151 [2023-12-25 06:07:13,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:13,158 INFO L225 Difference]: With dead ends: 146 [2023-12-25 06:07:13,159 INFO L226 Difference]: Without dead ends: 142 [2023-12-25 06:07:13,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1230 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=869, Invalid=12241, Unknown=0, NotChecked=0, Total=13110 [2023-12-25 06:07:13,160 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 91 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:13,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1208 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 06:07:13,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-12-25 06:07:13,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 83. [2023-12-25 06:07:13,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 57 states have internal predecessors, (58), 3 states have call successors, (3), 2 states have call predecessors, (3), 23 states have return successors, (24), 23 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-25 06:07:13,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2023-12-25 06:07:13,163 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 151 [2023-12-25 06:07:13,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:13,164 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2023-12-25 06:07:13,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 1.6805555555555556) internal successors, (121), 50 states have internal predecessors, (121), 24 states have call successors, (24), 1 states have call predecessors, (24), 22 states have return successors, (42), 23 states have call predecessors, (42), 24 states have call successors, (42) [2023-12-25 06:07:13,164 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2023-12-25 06:07:13,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-25 06:07:13,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:13,165 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:13,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-25 06:07:13,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:07:13,369 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:13,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:13,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1959618555, now seen corresponding path program 10 times [2023-12-25 06:07:13,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:13,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756990108] [2023-12-25 06:07:13,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:07:13,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:07:13,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:13,371 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:07:13,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-25 06:07:13,572 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:07:13,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:13,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 93 conjunts are in the unsatisfiable core [2023-12-25 06:07:13,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2023-12-25 06:07:14,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:20,641 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 640 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-25 06:07:20,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:20,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756990108] [2023-12-25 06:07:20,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756990108] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:20,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:20,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 69] total 76 [2023-12-25 06:07:20,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594439458] [2023-12-25 06:07:20,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:20,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-12-25 06:07:20,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:20,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-12-25 06:07:20,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=5441, Unknown=0, NotChecked=0, Total=5700 [2023-12-25 06:07:20,644 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand has 76 states, 75 states have (on average 1.68) internal successors, (126), 52 states have internal predecessors, (126), 25 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (44), 24 states have call predecessors, (44), 25 states have call successors, (44) [2023-12-25 06:07:22,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:22,589 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2023-12-25 06:07:22,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-25 06:07:22,589 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 1.68) internal successors, (126), 52 states have internal predecessors, (126), 25 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (44), 24 states have call predecessors, (44), 25 states have call successors, (44) Word has length 158 [2023-12-25 06:07:22,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:22,590 INFO L225 Difference]: With dead ends: 152 [2023-12-25 06:07:22,590 INFO L226 Difference]: Without dead ends: 148 [2023-12-25 06:07:22,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1373 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=957, Invalid=13563, Unknown=0, NotChecked=0, Total=14520 [2023-12-25 06:07:22,592 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 79 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 2442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:22,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1222 Invalid, 2442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2413 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 06:07:22,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-25 06:07:22,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 86. [2023-12-25 06:07:22,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 3 states have call successors, (3), 2 states have call predecessors, (3), 24 states have return successors, (25), 24 states have call predecessors, (25), 3 states have call successors, (25) [2023-12-25 06:07:22,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2023-12-25 06:07:22,596 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 158 [2023-12-25 06:07:22,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:22,596 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2023-12-25 06:07:22,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 1.68) internal successors, (126), 52 states have internal predecessors, (126), 25 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (44), 24 states have call predecessors, (44), 25 states have call successors, (44) [2023-12-25 06:07:22,597 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2023-12-25 06:07:22,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-25 06:07:22,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:22,597 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:22,607 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 (26)] Forceful destruction successful, exit code 0 [2023-12-25 06:07:22,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:07:22,804 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:22,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:22,804 INFO L85 PathProgramCache]: Analyzing trace with hash -863500821, now seen corresponding path program 11 times [2023-12-25 06:07:22,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:22,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786238144] [2023-12-25 06:07:22,804 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:07:22,804 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:07:22,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:22,806 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:07:22,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-25 06:07:23,057 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-12-25 06:07:23,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:23,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 98 conjunts are in the unsatisfiable core [2023-12-25 06:07:23,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:24,124 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2023-12-25 06:07:24,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:33,745 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 704 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-12-25 06:07:33,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:33,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786238144] [2023-12-25 06:07:33,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786238144] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:33,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:33,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 73] total 123 [2023-12-25 06:07:33,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971420733] [2023-12-25 06:07:33,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:33,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2023-12-25 06:07:33,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:33,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2023-12-25 06:07:33,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=14581, Unknown=0, NotChecked=0, Total=15006 [2023-12-25 06:07:33,749 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand has 123 states, 121 states have (on average 1.43801652892562) internal successors, (174), 77 states have internal predecessors, (174), 26 states have call successors, (26), 1 states have call predecessors, (26), 46 states have return successors, (46), 46 states have call predecessors, (46), 26 states have call successors, (46) [2023-12-25 06:07:37,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:37,401 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2023-12-25 06:07:37,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-25 06:07:37,401 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 121 states have (on average 1.43801652892562) internal successors, (174), 77 states have internal predecessors, (174), 26 states have call successors, (26), 1 states have call predecessors, (26), 46 states have return successors, (46), 46 states have call predecessors, (46), 26 states have call successors, (46) Word has length 165 [2023-12-25 06:07:37,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:37,402 INFO L225 Difference]: With dead ends: 158 [2023-12-25 06:07:37,402 INFO L226 Difference]: Without dead ends: 154 [2023-12-25 06:07:37,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 4995 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1195, Invalid=27197, Unknown=0, NotChecked=0, Total=28392 [2023-12-25 06:07:37,405 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 139 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 3794 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 3902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 3794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:37,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 2118 Invalid, 3902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 3794 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-25 06:07:37,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-12-25 06:07:37,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 89. [2023-12-25 06:07:37,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 61 states have internal predecessors, (62), 3 states have call successors, (3), 2 states have call predecessors, (3), 25 states have return successors, (26), 25 states have call predecessors, (26), 3 states have call successors, (26) [2023-12-25 06:07:37,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2023-12-25 06:07:37,408 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 165 [2023-12-25 06:07:37,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:37,409 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2023-12-25 06:07:37,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 121 states have (on average 1.43801652892562) internal successors, (174), 77 states have internal predecessors, (174), 26 states have call successors, (26), 1 states have call predecessors, (26), 46 states have return successors, (46), 46 states have call predecessors, (46), 26 states have call successors, (46) [2023-12-25 06:07:37,409 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2023-12-25 06:07:37,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-25 06:07:37,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:37,410 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:37,414 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 (27)] Ended with exit code 0 [2023-12-25 06:07:37,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:07:37,614 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:37,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:37,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1194715307, now seen corresponding path program 11 times [2023-12-25 06:07:37,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:37,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624692520] [2023-12-25 06:07:37,614 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:07:37,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:07:37,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:37,615 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:07:37,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-25 06:07:37,908 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-12-25 06:07:37,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:37,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 101 conjunts are in the unsatisfiable core [2023-12-25 06:07:37,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:39,528 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2023-12-25 06:07:39,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-25 06:07:47,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:47,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624692520] [2023-12-25 06:07:47,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624692520] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:47,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:47,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 75] total 82 [2023-12-25 06:07:47,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881546867] [2023-12-25 06:07:47,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:47,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2023-12-25 06:07:47,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:47,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2023-12-25 06:07:47,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=6361, Unknown=0, NotChecked=0, Total=6642 [2023-12-25 06:07:47,255 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand has 82 states, 81 states have (on average 1.6790123456790123) internal successors, (136), 56 states have internal predecessors, (136), 27 states have call successors, (27), 1 states have call predecessors, (27), 25 states have return successors, (48), 26 states have call predecessors, (48), 27 states have call successors, (48) [2023-12-25 06:07:50,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:50,200 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions. [2023-12-25 06:07:50,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-25 06:07:50,200 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 1.6790123456790123) internal successors, (136), 56 states have internal predecessors, (136), 27 states have call successors, (27), 1 states have call predecessors, (27), 25 states have return successors, (48), 26 states have call predecessors, (48), 27 states have call successors, (48) Word has length 172 [2023-12-25 06:07:50,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:50,201 INFO L225 Difference]: With dead ends: 164 [2023-12-25 06:07:50,201 INFO L226 Difference]: Without dead ends: 160 [2023-12-25 06:07:50,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1621 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1090, Invalid=15940, Unknown=0, NotChecked=0, Total=17030 [2023-12-25 06:07:50,203 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 107 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 2736 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:50,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 1400 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2736 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 06:07:50,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-25 06:07:50,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 92. [2023-12-25 06:07:50,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 62 states have (on average 1.032258064516129) internal successors, (64), 63 states have internal predecessors, (64), 3 states have call successors, (3), 2 states have call predecessors, (3), 26 states have return successors, (27), 26 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-25 06:07:50,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2023-12-25 06:07:50,206 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 172 [2023-12-25 06:07:50,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:50,207 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2023-12-25 06:07:50,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 1.6790123456790123) internal successors, (136), 56 states have internal predecessors, (136), 27 states have call successors, (27), 1 states have call predecessors, (27), 25 states have return successors, (48), 26 states have call predecessors, (48), 27 states have call successors, (48) [2023-12-25 06:07:50,207 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2023-12-25 06:07:50,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-25 06:07:50,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:50,208 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:50,211 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 (28)] Ended with exit code 0 [2023-12-25 06:07:50,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:07:50,411 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:50,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:50,411 INFO L85 PathProgramCache]: Analyzing trace with hash 892743637, now seen corresponding path program 12 times [2023-12-25 06:07:50,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:50,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41190628] [2023-12-25 06:07:50,412 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:07:50,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:07:50,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:50,413 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:07:50,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-25 06:07:50,735 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-25 06:07:50,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:50,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 106 conjunts are in the unsatisfiable core [2023-12-25 06:07:50,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:52,175 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2023-12-25 06:07:52,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:08:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 840 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-25 06:08:02,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:08:02,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41190628] [2023-12-25 06:08:02,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41190628] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:08:02,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:08:02,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 78] total 132 [2023-12-25 06:08:02,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566939509] [2023-12-25 06:08:02,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:08:02,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2023-12-25 06:08:02,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:08:02,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2023-12-25 06:08:02,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=456, Invalid=16836, Unknown=0, NotChecked=0, Total=17292 [2023-12-25 06:08:02,768 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand has 132 states, 131 states have (on average 1.4351145038167938) internal successors, (188), 82 states have internal predecessors, (188), 28 states have call successors, (28), 1 states have call predecessors, (28), 50 states have return successors, (50), 50 states have call predecessors, (50), 28 states have call successors, (50) [2023-12-25 06:08:07,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:08:07,266 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2023-12-25 06:08:07,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-25 06:08:07,267 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 131 states have (on average 1.4351145038167938) internal successors, (188), 82 states have internal predecessors, (188), 28 states have call successors, (28), 1 states have call predecessors, (28), 50 states have return successors, (50), 50 states have call predecessors, (50), 28 states have call successors, (50) Word has length 179 [2023-12-25 06:08:07,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:08:07,268 INFO L225 Difference]: With dead ends: 170 [2023-12-25 06:08:07,268 INFO L226 Difference]: Without dead ends: 166 [2023-12-25 06:08:07,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5697 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1342, Invalid=31600, Unknown=0, NotChecked=0, Total=32942 [2023-12-25 06:08:07,271 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 171 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 4748 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 4880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 4748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:08:07,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 2522 Invalid, 4880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 4748 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-25 06:08:07,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-25 06:08:07,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 95. [2023-12-25 06:08:07,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 3 states have call successors, (3), 2 states have call predecessors, (3), 27 states have return successors, (28), 27 states have call predecessors, (28), 3 states have call successors, (28) [2023-12-25 06:08:07,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2023-12-25 06:08:07,274 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 179 [2023-12-25 06:08:07,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:08:07,274 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2023-12-25 06:08:07,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 131 states have (on average 1.4351145038167938) internal successors, (188), 82 states have internal predecessors, (188), 28 states have call successors, (28), 1 states have call predecessors, (28), 50 states have return successors, (50), 50 states have call predecessors, (50), 28 states have call successors, (50) [2023-12-25 06:08:07,274 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2023-12-25 06:08:07,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-25 06:08:07,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:08:07,275 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:08:07,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-25 06:08:07,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:08:07,479 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:08:07,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:08:07,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1291966767, now seen corresponding path program 12 times [2023-12-25 06:08:07,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:08:07,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577845222] [2023-12-25 06:08:07,480 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:08:07,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:08:07,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:08:07,481 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:08:07,482 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 (30)] Waiting until timeout for monitored process [2023-12-25 06:08:07,847 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-25 06:08:07,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:08:07,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 110 conjunts are in the unsatisfiable core [2023-12-25 06:08:07,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:08:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-25 06:08:09,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:08:21,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-25 06:08:21,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:08:21,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577845222] [2023-12-25 06:08:21,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577845222] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:08:21,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:08:21,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 82] total 138 [2023-12-25 06:08:21,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697085329] [2023-12-25 06:08:21,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:08:21,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2023-12-25 06:08:21,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:08:21,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2023-12-25 06:08:21,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=18427, Unknown=0, NotChecked=0, Total=18906 [2023-12-25 06:08:21,215 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand has 138 states, 136 states have (on average 1.4338235294117647) internal successors, (195), 86 states have internal predecessors, (195), 29 states have call successors, (29), 1 states have call predecessors, (29), 52 states have return successors, (52), 52 states have call predecessors, (52), 29 states have call successors, (52) [2023-12-25 06:08:24,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:08:24,696 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2023-12-25 06:08:24,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-25 06:08:24,696 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 136 states have (on average 1.4338235294117647) internal successors, (195), 86 states have internal predecessors, (195), 29 states have call successors, (29), 1 states have call predecessors, (29), 52 states have return successors, (52), 52 states have call predecessors, (52), 29 states have call successors, (52) Word has length 186 [2023-12-25 06:08:24,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:08:24,697 INFO L225 Difference]: With dead ends: 176 [2023-12-25 06:08:24,697 INFO L226 Difference]: Without dead ends: 172 [2023-12-25 06:08:24,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6423 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1457, Invalid=34833, Unknown=0, NotChecked=0, Total=36290 [2023-12-25 06:08:24,700 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 101 mSDsluCounter, 2375 mSDsCounter, 0 mSdLazyCounter, 4590 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 4630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 4590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:08:24,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 2411 Invalid, 4630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 4590 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-25 06:08:24,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-25 06:08:24,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 98. [2023-12-25 06:08:24,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 67 states have internal predecessors, (68), 3 states have call successors, (3), 2 states have call predecessors, (3), 28 states have return successors, (29), 28 states have call predecessors, (29), 3 states have call successors, (29) [2023-12-25 06:08:24,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2023-12-25 06:08:24,703 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 186 [2023-12-25 06:08:24,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:08:24,703 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2023-12-25 06:08:24,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 136 states have (on average 1.4338235294117647) internal successors, (195), 86 states have internal predecessors, (195), 29 states have call successors, (29), 1 states have call predecessors, (29), 52 states have return successors, (52), 52 states have call predecessors, (52), 29 states have call successors, (52) [2023-12-25 06:08:24,704 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2023-12-25 06:08:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-25 06:08:24,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:08:24,705 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:08:24,708 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 (30)] Ended with exit code 0 [2023-12-25 06:08:24,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:08:24,908 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:08:24,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:08:24,909 INFO L85 PathProgramCache]: Analyzing trace with hash -880769985, now seen corresponding path program 13 times [2023-12-25 06:08:24,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:08:24,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598244827] [2023-12-25 06:08:24,909 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:08:24,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:08:24,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:08:24,910 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:08:24,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-25 06:08:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:08:25,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 113 conjunts are in the unsatisfiable core [2023-12-25 06:08:25,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:08:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-12-25 06:08:27,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:08:35,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 988 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-12-25 06:08:35,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:08:35,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598244827] [2023-12-25 06:08:35,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598244827] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:08:35,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:08:35,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 84] total 91 [2023-12-25 06:08:35,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111950498] [2023-12-25 06:08:35,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:08:35,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-12-25 06:08:35,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:08:35,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-12-25 06:08:35,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=7876, Unknown=0, NotChecked=0, Total=8190 [2023-12-25 06:08:35,464 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand has 91 states, 90 states have (on average 1.6777777777777778) internal successors, (151), 62 states have internal predecessors, (151), 30 states have call successors, (30), 1 states have call predecessors, (30), 28 states have return successors, (54), 29 states have call predecessors, (54), 30 states have call successors, (54) [2023-12-25 06:08:38,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:08:38,089 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2023-12-25 06:08:38,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-25 06:08:38,089 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 1.6777777777777778) internal successors, (151), 62 states have internal predecessors, (151), 30 states have call successors, (30), 1 states have call predecessors, (30), 28 states have return successors, (54), 29 states have call predecessors, (54), 30 states have call successors, (54) Word has length 193 [2023-12-25 06:08:38,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:08:38,092 INFO L225 Difference]: With dead ends: 182 [2023-12-25 06:08:38,092 INFO L226 Difference]: Without dead ends: 178 [2023-12-25 06:08:38,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1979 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1274, Invalid=19606, Unknown=0, NotChecked=0, Total=20880 [2023-12-25 06:08:38,095 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 244 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 3606 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 3785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 3606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:08:38,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1891 Invalid, 3785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 3606 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 06:08:38,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-25 06:08:38,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 101. [2023-12-25 06:08:38,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 69 states have internal predecessors, (70), 3 states have call successors, (3), 2 states have call predecessors, (3), 29 states have return successors, (30), 29 states have call predecessors, (30), 3 states have call successors, (30) [2023-12-25 06:08:38,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2023-12-25 06:08:38,119 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 193 [2023-12-25 06:08:38,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:08:38,120 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2023-12-25 06:08:38,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 1.6777777777777778) internal successors, (151), 62 states have internal predecessors, (151), 30 states have call successors, (30), 1 states have call predecessors, (30), 28 states have return successors, (54), 29 states have call predecessors, (54), 30 states have call successors, (54) [2023-12-25 06:08:38,120 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2023-12-25 06:08:38,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-25 06:08:38,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:08:38,121 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:08:38,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-25 06:08:38,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:08:38,322 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:08:38,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:08:38,322 INFO L85 PathProgramCache]: Analyzing trace with hash 654855561, now seen corresponding path program 13 times [2023-12-25 06:08:38,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:08:38,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473852629] [2023-12-25 06:08:38,322 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:08:38,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:08:38,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:08:38,323 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:08:38,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-25 06:08:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:08:38,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 117 conjunts are in the unsatisfiable core [2023-12-25 06:08:38,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:08:40,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-12-25 06:08:40,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:08:50,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 1066 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-25 06:08:50,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:08:50,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473852629] [2023-12-25 06:08:50,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473852629] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:08:50,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:08:50,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 87] total 94 [2023-12-25 06:08:50,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623634010] [2023-12-25 06:08:50,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:08:50,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2023-12-25 06:08:50,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:08:50,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2023-12-25 06:08:50,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=8417, Unknown=0, NotChecked=0, Total=8742 [2023-12-25 06:08:50,703 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand has 94 states, 93 states have (on average 1.6774193548387097) internal successors, (156), 64 states have internal predecessors, (156), 31 states have call successors, (31), 1 states have call predecessors, (31), 29 states have return successors, (56), 30 states have call predecessors, (56), 31 states have call successors, (56) [2023-12-25 06:08:53,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:08:53,784 INFO L93 Difference]: Finished difference Result 188 states and 190 transitions. [2023-12-25 06:08:53,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-25 06:08:53,785 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 1.6774193548387097) internal successors, (156), 64 states have internal predecessors, (156), 31 states have call successors, (31), 1 states have call predecessors, (31), 29 states have return successors, (56), 30 states have call predecessors, (56), 31 states have call successors, (56) Word has length 200 [2023-12-25 06:08:53,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:08:53,787 INFO L225 Difference]: With dead ends: 188 [2023-12-25 06:08:53,787 INFO L226 Difference]: Without dead ends: 184 [2023-12-25 06:08:53,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2165 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1380, Invalid=21270, Unknown=0, NotChecked=0, Total=22650 [2023-12-25 06:08:53,792 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 124 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 3569 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 3620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:08:53,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 1884 Invalid, 3620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 3569 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-25 06:08:53,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-25 06:08:53,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 104. [2023-12-25 06:08:53,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 3 states have call successors, (3), 2 states have call predecessors, (3), 30 states have return successors, (31), 30 states have call predecessors, (31), 3 states have call successors, (31) [2023-12-25 06:08:53,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2023-12-25 06:08:53,814 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 200 [2023-12-25 06:08:53,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:08:53,814 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2023-12-25 06:08:53,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 1.6774193548387097) internal successors, (156), 64 states have internal predecessors, (156), 31 states have call successors, (31), 1 states have call predecessors, (31), 29 states have return successors, (56), 30 states have call predecessors, (56), 31 states have call successors, (56) [2023-12-25 06:08:53,814 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2023-12-25 06:08:53,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-25 06:08:53,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:08:53,815 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:08:53,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-25 06:08:54,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:08:54,016 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:08:54,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:08:54,016 INFO L85 PathProgramCache]: Analyzing trace with hash 750887721, now seen corresponding path program 14 times [2023-12-25 06:08:54,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:08:54,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80442726] [2023-12-25 06:08:54,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:08:54,017 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:08:54,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:08:54,018 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:08:54,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-25 06:08:54,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:08:54,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:08:54,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 122 conjunts are in the unsatisfiable core [2023-12-25 06:08:54,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:08:56,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-12-25 06:08:56,442 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:10,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1148 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-25 06:09:10,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:10,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80442726] [2023-12-25 06:09:10,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80442726] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:09:10,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:10,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 91] total 153 [2023-12-25 06:09:10,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555281439] [2023-12-25 06:09:10,987 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:10,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 153 states [2023-12-25 06:09:10,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:10,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2023-12-25 06:09:10,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=533, Invalid=22723, Unknown=0, NotChecked=0, Total=23256 [2023-12-25 06:09:10,989 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand has 153 states, 151 states have (on average 1.4304635761589404) internal successors, (216), 95 states have internal predecessors, (216), 32 states have call successors, (32), 1 states have call predecessors, (32), 58 states have return successors, (58), 58 states have call predecessors, (58), 32 states have call successors, (58) [2023-12-25 06:09:15,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:15,701 INFO L93 Difference]: Finished difference Result 194 states and 196 transitions. [2023-12-25 06:09:15,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-25 06:09:15,701 INFO L78 Accepts]: Start accepts. Automaton has has 153 states, 151 states have (on average 1.4304635761589404) internal successors, (216), 95 states have internal predecessors, (216), 32 states have call successors, (32), 1 states have call predecessors, (32), 58 states have return successors, (58), 58 states have call predecessors, (58), 32 states have call successors, (58) Word has length 207 [2023-12-25 06:09:15,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:15,702 INFO L225 Difference]: With dead ends: 194 [2023-12-25 06:09:15,702 INFO L226 Difference]: Without dead ends: 190 [2023-12-25 06:09:15,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 7908 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=1678, Invalid=42632, Unknown=0, NotChecked=0, Total=44310 [2023-12-25 06:09:15,706 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 301 mSDsluCounter, 3278 mSDsCounter, 0 mSdLazyCounter, 6414 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 6638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 6414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:15,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 3317 Invalid, 6638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 6414 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-25 06:09:15,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-12-25 06:09:15,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 107. [2023-12-25 06:09:15,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 73 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 31 states have return successors, (32), 31 states have call predecessors, (32), 3 states have call successors, (32) [2023-12-25 06:09:15,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2023-12-25 06:09:15,713 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 207 [2023-12-25 06:09:15,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:15,713 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2023-12-25 06:09:15,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 153 states, 151 states have (on average 1.4304635761589404) internal successors, (216), 95 states have internal predecessors, (216), 32 states have call successors, (32), 1 states have call predecessors, (32), 58 states have return successors, (58), 58 states have call predecessors, (58), 32 states have call successors, (58) [2023-12-25 06:09:15,713 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2023-12-25 06:09:15,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-25 06:09:15,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:15,714 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:15,726 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 (33)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:15,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:15,918 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:15,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:15,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1293489251, now seen corresponding path program 14 times [2023-12-25 06:09:15,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:15,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059191232] [2023-12-25 06:09:15,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:09:15,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:15,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:15,920 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:15,926 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 (34)] Waiting until timeout for monitored process [2023-12-25 06:09:16,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:09:16,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:16,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 126 conjunts are in the unsatisfiable core [2023-12-25 06:09:16,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:18,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2023-12-25 06:09:18,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 1232 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-25 06:09:32,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:32,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059191232] [2023-12-25 06:09:32,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059191232] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:09:32,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:32,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 94] total 158 [2023-12-25 06:09:32,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124688232] [2023-12-25 06:09:32,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:32,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2023-12-25 06:09:32,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:32,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2023-12-25 06:09:32,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=24255, Unknown=0, NotChecked=0, Total=24806 [2023-12-25 06:09:32,261 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand has 158 states, 156 states have (on average 1.4294871794871795) internal successors, (223), 98 states have internal predecessors, (223), 33 states have call successors, (33), 1 states have call predecessors, (33), 60 states have return successors, (60), 60 states have call predecessors, (60), 33 states have call successors, (60) [2023-12-25 06:09:37,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:37,455 INFO L93 Difference]: Finished difference Result 200 states and 202 transitions. [2023-12-25 06:09:37,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-25 06:09:37,455 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 156 states have (on average 1.4294871794871795) internal successors, (223), 98 states have internal predecessors, (223), 33 states have call successors, (33), 1 states have call predecessors, (33), 60 states have return successors, (60), 60 states have call predecessors, (60), 33 states have call successors, (60) Word has length 214 [2023-12-25 06:09:37,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:37,456 INFO L225 Difference]: With dead ends: 200 [2023-12-25 06:09:37,456 INFO L226 Difference]: Without dead ends: 196 [2023-12-25 06:09:37,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 8521 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=1799, Invalid=45943, Unknown=0, NotChecked=0, Total=47742 [2023-12-25 06:09:37,459 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 57 mSDsluCounter, 3473 mSDsCounter, 0 mSdLazyCounter, 6892 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3513 SdHoareTripleChecker+Invalid, 6915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 6892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:37,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3513 Invalid, 6915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 6892 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 06:09:37,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-12-25 06:09:37,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 110. [2023-12-25 06:09:37,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 74 states have (on average 1.027027027027027) internal successors, (76), 75 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 32 states have return successors, (33), 32 states have call predecessors, (33), 3 states have call successors, (33) [2023-12-25 06:09:37,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2023-12-25 06:09:37,462 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 214 [2023-12-25 06:09:37,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:37,463 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2023-12-25 06:09:37,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 156 states have (on average 1.4294871794871795) internal successors, (223), 98 states have internal predecessors, (223), 33 states have call successors, (33), 1 states have call predecessors, (33), 60 states have return successors, (60), 60 states have call predecessors, (60), 33 states have call successors, (60) [2023-12-25 06:09:37,463 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2023-12-25 06:09:37,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-25 06:09:37,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:37,464 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:37,469 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 (34)] Ended with exit code 0 [2023-12-25 06:09:37,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:37,669 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:37,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:37,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1375982445, now seen corresponding path program 15 times [2023-12-25 06:09:37,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:37,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348151374] [2023-12-25 06:09:37,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:09:37,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:37,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:37,670 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:37,672 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 (35)] Waiting until timeout for monitored process [2023-12-25 06:09:38,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-12-25 06:09:38,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:38,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 130 conjunts are in the unsatisfiable core [2023-12-25 06:09:38,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:40,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2023-12-25 06:09:40,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 1320 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-12-25 06:09:56,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:56,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348151374] [2023-12-25 06:09:56,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348151374] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:09:56,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:56,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 97] total 163 [2023-12-25 06:09:56,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426232663] [2023-12-25 06:09:56,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:56,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 163 states [2023-12-25 06:09:56,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:56,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2023-12-25 06:09:56,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=25837, Unknown=0, NotChecked=0, Total=26406 [2023-12-25 06:09:56,280 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand has 163 states, 161 states have (on average 1.4285714285714286) internal successors, (230), 101 states have internal predecessors, (230), 34 states have call successors, (34), 1 states have call predecessors, (34), 62 states have return successors, (62), 62 states have call predecessors, (62), 34 states have call successors, (62) [2023-12-25 06:10:01,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:10:01,814 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2023-12-25 06:10:01,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-25 06:10:01,815 INFO L78 Accepts]: Start accepts. Automaton has has 163 states, 161 states have (on average 1.4285714285714286) internal successors, (230), 101 states have internal predecessors, (230), 34 states have call successors, (34), 1 states have call predecessors, (34), 62 states have return successors, (62), 62 states have call predecessors, (62), 34 states have call successors, (62) Word has length 221 [2023-12-25 06:10:01,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:10:01,815 INFO L225 Difference]: With dead ends: 206 [2023-12-25 06:10:01,815 INFO L226 Difference]: Without dead ends: 202 [2023-12-25 06:10:01,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 9027 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=1855, Invalid=48545, Unknown=0, NotChecked=0, Total=50400 [2023-12-25 06:10:01,818 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 101 mSDsluCounter, 3444 mSDsCounter, 0 mSdLazyCounter, 6773 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 3485 SdHoareTripleChecker+Invalid, 6828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 6773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:10:01,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 3485 Invalid, 6828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 6773 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 06:10:01,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-12-25 06:10:01,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 113. [2023-12-25 06:10:01,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 states have internal predecessors, (78), 3 states have call successors, (3), 2 states have call predecessors, (3), 33 states have return successors, (34), 33 states have call predecessors, (34), 3 states have call successors, (34) [2023-12-25 06:10:01,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2023-12-25 06:10:01,821 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 221 [2023-12-25 06:10:01,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:10:01,822 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2023-12-25 06:10:01,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 163 states, 161 states have (on average 1.4285714285714286) internal successors, (230), 101 states have internal predecessors, (230), 34 states have call successors, (34), 1 states have call predecessors, (34), 62 states have return successors, (62), 62 states have call predecessors, (62), 34 states have call successors, (62) [2023-12-25 06:10:01,822 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2023-12-25 06:10:01,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-25 06:10:01,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:10:01,823 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:10:01,844 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 (35)] Forceful destruction successful, exit code 0 [2023-12-25 06:10:02,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:10:02,027 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:10:02,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:10:02,027 INFO L85 PathProgramCache]: Analyzing trace with hash -266875459, now seen corresponding path program 15 times [2023-12-25 06:10:02,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:10:02,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082949892] [2023-12-25 06:10:02,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:10:02,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:10:02,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:10:02,039 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:10:02,054 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 (36)] Waiting until timeout for monitored process [2023-12-25 06:10:02,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-12-25 06:10:02,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:10:02,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 134 conjunts are in the unsatisfiable core [2023-12-25 06:10:02,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:10:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2023-12-25 06:10:04,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:10:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-25 06:10:19,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:10:19,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082949892] [2023-12-25 06:10:19,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2082949892] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:10:19,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:10:19,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 99] total 167 [2023-12-25 06:10:19,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682380176] [2023-12-25 06:10:19,802 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:10:19,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 167 states [2023-12-25 06:10:19,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:10:19,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2023-12-25 06:10:19,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=582, Invalid=27140, Unknown=0, NotChecked=0, Total=27722 [2023-12-25 06:10:19,804 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand has 167 states, 166 states have (on average 1.427710843373494) internal successors, (237), 103 states have internal predecessors, (237), 35 states have call successors, (35), 1 states have call predecessors, (35), 64 states have return successors, (64), 64 states have call predecessors, (64), 35 states have call successors, (64) [2023-12-25 06:10:25,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:10:25,294 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2023-12-25 06:10:25,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-25 06:10:25,294 INFO L78 Accepts]: Start accepts. Automaton has has 167 states, 166 states have (on average 1.427710843373494) internal successors, (237), 103 states have internal predecessors, (237), 35 states have call successors, (35), 1 states have call predecessors, (35), 64 states have return successors, (64), 64 states have call predecessors, (64), 35 states have call successors, (64) Word has length 228 [2023-12-25 06:10:25,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:10:25,295 INFO L225 Difference]: With dead ends: 212 [2023-12-25 06:10:25,295 INFO L226 Difference]: Without dead ends: 208 [2023-12-25 06:10:25,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9429 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=1976, Invalid=51616, Unknown=0, NotChecked=0, Total=53592 [2023-12-25 06:10:25,297 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 66 mSDsluCounter, 3751 mSDsCounter, 0 mSdLazyCounter, 7498 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 7523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 7498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:10:25,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 3793 Invalid, 7523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 7498 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-25 06:10:25,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-12-25 06:10:25,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 116. [2023-12-25 06:10:25,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 79 states have internal predecessors, (80), 3 states have call successors, (3), 2 states have call predecessors, (3), 34 states have return successors, (35), 34 states have call predecessors, (35), 3 states have call successors, (35) [2023-12-25 06:10:25,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2023-12-25 06:10:25,301 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 228 [2023-12-25 06:10:25,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:10:25,301 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2023-12-25 06:10:25,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 167 states, 166 states have (on average 1.427710843373494) internal successors, (237), 103 states have internal predecessors, (237), 35 states have call successors, (35), 1 states have call predecessors, (35), 64 states have return successors, (64), 64 states have call predecessors, (64), 35 states have call successors, (64) [2023-12-25 06:10:25,301 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2023-12-25 06:10:25,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-25 06:10:25,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:10:25,302 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:10:25,317 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 (36)] Forceful destruction successful, exit code 0 [2023-12-25 06:10:25,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:10:25,503 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:10:25,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:10:25,503 INFO L85 PathProgramCache]: Analyzing trace with hash -975519619, now seen corresponding path program 16 times [2023-12-25 06:10:25,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:10:25,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671514209] [2023-12-25 06:10:25,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:10:25,504 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:10:25,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:10:25,521 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:10:25,546 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 (37)] Waiting until timeout for monitored process [2023-12-25 06:10:26,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:10:26,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:10:26,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 137 conjunts are in the unsatisfiable core [2023-12-25 06:10:26,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:10:27,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 0 proven. 752 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2023-12-25 06:10:27,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:10:43,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 0 proven. 1504 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-12-25 06:10:43,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:10:43,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671514209] [2023-12-25 06:10:43,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671514209] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:10:43,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:10:43,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 102] total 109 [2023-12-25 06:10:43,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960714860] [2023-12-25 06:10:43,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:10:43,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2023-12-25 06:10:43,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:10:43,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2023-12-25 06:10:43,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=11392, Unknown=0, NotChecked=0, Total=11772 [2023-12-25 06:10:43,615 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand has 109 states, 108 states have (on average 1.6759259259259258) internal successors, (181), 74 states have internal predecessors, (181), 36 states have call successors, (36), 1 states have call predecessors, (36), 34 states have return successors, (66), 35 states have call predecessors, (66), 36 states have call successors, (66) [2023-12-25 06:10:48,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:10:48,886 INFO L93 Difference]: Finished difference Result 218 states and 220 transitions. [2023-12-25 06:10:48,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-25 06:10:48,887 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 108 states have (on average 1.6759259259259258) internal successors, (181), 74 states have internal predecessors, (181), 36 states have call successors, (36), 1 states have call predecessors, (36), 34 states have return successors, (66), 35 states have call predecessors, (66), 36 states have call successors, (66) Word has length 235 [2023-12-25 06:10:48,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:10:48,894 INFO L225 Difference]: With dead ends: 218 [2023-12-25 06:10:48,894 INFO L226 Difference]: Without dead ends: 214 [2023-12-25 06:10:48,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 360 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2916 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1751, Invalid=28699, Unknown=0, NotChecked=0, Total=30450 [2023-12-25 06:10:48,898 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 139 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 5126 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 5229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 5126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:10:48,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 2637 Invalid, 5229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 5126 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-25 06:10:48,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-12-25 06:10:48,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 119. [2023-12-25 06:10:48,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 80 states have (on average 1.025) internal successors, (82), 81 states have internal predecessors, (82), 3 states have call successors, (3), 2 states have call predecessors, (3), 35 states have return successors, (36), 35 states have call predecessors, (36), 3 states have call successors, (36) [2023-12-25 06:10:48,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2023-12-25 06:10:48,911 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 235 [2023-12-25 06:10:48,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:10:48,912 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2023-12-25 06:10:48,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 108 states have (on average 1.6759259259259258) internal successors, (181), 74 states have internal predecessors, (181), 36 states have call successors, (36), 1 states have call predecessors, (36), 34 states have return successors, (66), 35 states have call predecessors, (66), 36 states have call successors, (66) [2023-12-25 06:10:48,912 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2023-12-25 06:10:48,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-25 06:10:48,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:10:48,913 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:10:48,920 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 (37)] Forceful destruction successful, exit code 0 [2023-12-25 06:10:49,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:10:49,114 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:10:49,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:10:49,114 INFO L85 PathProgramCache]: Analyzing trace with hash 93329815, now seen corresponding path program 16 times [2023-12-25 06:10:49,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:10:49,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452357716] [2023-12-25 06:10:49,114 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:10:49,114 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:10:49,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:10:49,116 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:10:49,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-25 06:10:49,837 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:10:49,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:10:49,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 141 conjunts are in the unsatisfiable core [2023-12-25 06:10:49,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:10:51,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2023-12-25 06:10:51,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:11:07,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-25 06:11:07,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:11:07,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452357716] [2023-12-25 06:11:07,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452357716] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:11:07,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:11:07,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 105] total 112 [2023-12-25 06:11:07,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12673697] [2023-12-25 06:11:07,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:11:07,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2023-12-25 06:11:07,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:11:07,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2023-12-25 06:11:07,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=12041, Unknown=0, NotChecked=0, Total=12432 [2023-12-25 06:11:07,862 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand has 112 states, 111 states have (on average 1.6756756756756757) internal successors, (186), 76 states have internal predecessors, (186), 37 states have call successors, (37), 1 states have call predecessors, (37), 35 states have return successors, (68), 36 states have call predecessors, (68), 37 states have call successors, (68) [2023-12-25 06:11:11,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:11:11,834 INFO L93 Difference]: Finished difference Result 224 states and 226 transitions. [2023-12-25 06:11:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-12-25 06:11:11,835 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 1.6756756756756757) internal successors, (186), 76 states have internal predecessors, (186), 37 states have call successors, (37), 1 states have call predecessors, (37), 35 states have return successors, (68), 36 states have call predecessors, (68), 37 states have call successors, (68) Word has length 242 [2023-12-25 06:11:11,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:11:11,852 INFO L225 Difference]: With dead ends: 224 [2023-12-25 06:11:11,853 INFO L226 Difference]: Without dead ends: 220 [2023-12-25 06:11:11,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3141 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1875, Invalid=30705, Unknown=0, NotChecked=0, Total=32580 [2023-12-25 06:11:11,871 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 54 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 5112 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 2518 SdHoareTripleChecker+Invalid, 5133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 5112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:11:11,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 2518 Invalid, 5133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 5112 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-25 06:11:11,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-25 06:11:11,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 122. [2023-12-25 06:11:11,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 82 states have (on average 1.024390243902439) internal successors, (84), 83 states have internal predecessors, (84), 3 states have call successors, (3), 2 states have call predecessors, (3), 36 states have return successors, (37), 36 states have call predecessors, (37), 3 states have call successors, (37) [2023-12-25 06:11:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2023-12-25 06:11:11,875 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 242 [2023-12-25 06:11:11,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:11:11,876 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2023-12-25 06:11:11,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 1.6756756756756757) internal successors, (186), 76 states have internal predecessors, (186), 37 states have call successors, (37), 1 states have call predecessors, (37), 35 states have return successors, (68), 36 states have call predecessors, (68), 37 states have call successors, (68) [2023-12-25 06:11:11,876 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2023-12-25 06:11:11,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-25 06:11:11,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:11:11,877 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:11:11,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-12-25 06:11:12,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:11:12,083 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:11:12,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:11:12,083 INFO L85 PathProgramCache]: Analyzing trace with hash -156238105, now seen corresponding path program 17 times [2023-12-25 06:11:12,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:11:12,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044582193] [2023-12-25 06:11:12,083 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:11:12,083 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:11:12,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:11:12,085 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:11:12,087 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 (39)] Waiting until timeout for monitored process [2023-12-25 06:11:12,890 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-12-25 06:11:12,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:11:12,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 146 conjunts are in the unsatisfiable core [2023-12-25 06:11:12,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:11:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2023-12-25 06:11:15,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:11:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 0 proven. 1700 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-25 06:11:39,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:11:39,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044582193] [2023-12-25 06:11:39,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044582193] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:11:39,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:11:39,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 108] total 182 [2023-12-25 06:11:39,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666624517] [2023-12-25 06:11:39,774 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:11:39,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 182 states [2023-12-25 06:11:39,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:11:39,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2023-12-25 06:11:39,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=636, Invalid=32306, Unknown=0, NotChecked=0, Total=32942 [2023-12-25 06:11:39,778 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand has 182 states, 181 states have (on average 1.425414364640884) internal successors, (258), 112 states have internal predecessors, (258), 38 states have call successors, (38), 1 states have call predecessors, (38), 70 states have return successors, (70), 70 states have call predecessors, (70), 38 states have call successors, (70) [2023-12-25 06:11:48,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:11:48,700 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2023-12-25 06:11:48,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-25 06:11:48,700 INFO L78 Accepts]: Start accepts. Automaton has has 182 states, 181 states have (on average 1.425414364640884) internal successors, (258), 112 states have internal predecessors, (258), 38 states have call successors, (38), 1 states have call predecessors, (38), 70 states have return successors, (70), 70 states have call predecessors, (70), 38 states have call successors, (70) Word has length 249 [2023-12-25 06:11:48,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:11:48,701 INFO L225 Difference]: With dead ends: 230 [2023-12-25 06:11:48,701 INFO L226 Difference]: Without dead ends: 226 [2023-12-25 06:11:48,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11212 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=2227, Invalid=61025, Unknown=0, NotChecked=0, Total=63252 [2023-12-25 06:11:48,705 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 139 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 8991 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 4626 SdHoareTripleChecker+Invalid, 9059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 8991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:11:48,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 4626 Invalid, 9059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 8991 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-25 06:11:48,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-25 06:11:48,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 125. [2023-12-25 06:11:48,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 85 states have internal predecessors, (86), 3 states have call successors, (3), 2 states have call predecessors, (3), 37 states have return successors, (38), 37 states have call predecessors, (38), 3 states have call successors, (38) [2023-12-25 06:11:48,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2023-12-25 06:11:48,708 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 249 [2023-12-25 06:11:48,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:11:48,709 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2023-12-25 06:11:48,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 182 states, 181 states have (on average 1.425414364640884) internal successors, (258), 112 states have internal predecessors, (258), 38 states have call successors, (38), 1 states have call predecessors, (38), 70 states have return successors, (70), 70 states have call predecessors, (70), 38 states have call successors, (70) [2023-12-25 06:11:48,709 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2023-12-25 06:11:48,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-25 06:11:48,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:11:48,710 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:11:48,728 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 (39)] Forceful destruction successful, exit code 0 [2023-12-25 06:11:48,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:11:48,916 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:11:48,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:11:48,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1639290865, now seen corresponding path program 17 times [2023-12-25 06:11:48,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:11:48,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263734688] [2023-12-25 06:11:48,917 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:11:48,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:11:48,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:11:48,918 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:11:48,922 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 (40)] Waiting until timeout for monitored process [2023-12-25 06:11:49,787 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-12-25 06:11:49,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:11:49,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 149 conjunts are in the unsatisfiable core [2023-12-25 06:11:49,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:11:52,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 0 proven. 901 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2023-12-25 06:11:52,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:12:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 0 proven. 1802 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-12-25 06:12:12,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:12:12,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263734688] [2023-12-25 06:12:12,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263734688] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:12:12,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:12:12,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 111] total 118 [2023-12-25 06:12:12,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852206425] [2023-12-25 06:12:12,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:12:12,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2023-12-25 06:12:12,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:12:12,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2023-12-25 06:12:12,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=13393, Unknown=0, NotChecked=0, Total=13806 [2023-12-25 06:12:12,009 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand has 118 states, 117 states have (on average 1.6752136752136753) internal successors, (196), 80 states have internal predecessors, (196), 39 states have call successors, (39), 1 states have call predecessors, (39), 37 states have return successors, (72), 38 states have call predecessors, (72), 39 states have call successors, (72) [2023-12-25 06:12:18,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:12:18,367 INFO L93 Difference]: Finished difference Result 236 states and 238 transitions. [2023-12-25 06:12:18,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-25 06:12:18,368 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 1.6752136752136753) internal successors, (196), 80 states have internal predecessors, (196), 39 states have call successors, (39), 1 states have call predecessors, (39), 37 states have return successors, (72), 38 states have call predecessors, (72), 39 states have call successors, (72) Word has length 256 [2023-12-25 06:12:18,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:12:18,369 INFO L225 Difference]: With dead ends: 236 [2023-12-25 06:12:18,369 INFO L226 Difference]: Without dead ends: 232 [2023-12-25 06:12:18,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 393 SyntacticMatches, 1 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3505 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=2056, Invalid=34234, Unknown=0, NotChecked=0, Total=36290 [2023-12-25 06:12:18,371 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 16 mSDsluCounter, 3116 mSDsCounter, 0 mSdLazyCounter, 6236 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 3162 SdHoareTripleChecker+Invalid, 6239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:12:18,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 3162 Invalid, 6239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6236 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-25 06:12:18,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-12-25 06:12:18,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 128. [2023-12-25 06:12:18,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 87 states have internal predecessors, (88), 3 states have call successors, (3), 2 states have call predecessors, (3), 38 states have return successors, (39), 38 states have call predecessors, (39), 3 states have call successors, (39) [2023-12-25 06:12:18,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2023-12-25 06:12:18,377 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 256 [2023-12-25 06:12:18,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:12:18,377 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2023-12-25 06:12:18,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 117 states have (on average 1.6752136752136753) internal successors, (196), 80 states have internal predecessors, (196), 39 states have call successors, (39), 1 states have call predecessors, (39), 37 states have return successors, (72), 38 states have call predecessors, (72), 39 states have call successors, (72) [2023-12-25 06:12:18,378 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2023-12-25 06:12:18,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-25 06:12:18,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:12:18,379 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:12:18,401 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 (40)] Forceful destruction successful, exit code 0 [2023-12-25 06:12:18,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:12:18,585 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:12:18,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:12:18,586 INFO L85 PathProgramCache]: Analyzing trace with hash 947292113, now seen corresponding path program 18 times [2023-12-25 06:12:18,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:12:18,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324408948] [2023-12-25 06:12:18,586 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:12:18,586 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:12:18,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:12:18,601 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:12:18,636 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 (41)] Waiting until timeout for monitored process [2023-12-25 06:12:19,560 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-12-25 06:12:19,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:12:19,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 154 conjunts are in the unsatisfiable core [2023-12-25 06:12:19,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:12:22,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2023-12-25 06:12:22,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:12:50,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 0 proven. 1908 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-25 06:12:50,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:12:50,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324408948] [2023-12-25 06:12:50,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324408948] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:12:50,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:12:50,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 115] total 193 [2023-12-25 06:12:50,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588062651] [2023-12-25 06:12:50,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:12:50,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2023-12-25 06:12:50,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:12:50,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2023-12-25 06:12:50,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=36379, Unknown=0, NotChecked=0, Total=37056 [2023-12-25 06:12:50,640 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand has 193 states, 191 states have (on average 1.4240837696335078) internal successors, (272), 119 states have internal predecessors, (272), 40 states have call successors, (40), 1 states have call predecessors, (40), 74 states have return successors, (74), 74 states have call predecessors, (74), 40 states have call successors, (74) [2023-12-25 06:12:58,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:12:58,087 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2023-12-25 06:12:58,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-25 06:12:58,088 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 191 states have (on average 1.4240837696335078) internal successors, (272), 119 states have internal predecessors, (272), 40 states have call successors, (40), 1 states have call predecessors, (40), 74 states have return successors, (74), 74 states have call predecessors, (74), 40 states have call successors, (74) Word has length 263 [2023-12-25 06:12:58,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:12:58,089 INFO L225 Difference]: With dead ends: 242 [2023-12-25 06:12:58,089 INFO L226 Difference]: Without dead ends: 238 [2023-12-25 06:12:58,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12828 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=2434, Invalid=68588, Unknown=0, NotChecked=0, Total=71022 [2023-12-25 06:12:58,094 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 405 mSDsluCounter, 4550 mSDsCounter, 0 mSdLazyCounter, 8387 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 4597 SdHoareTripleChecker+Invalid, 8734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 8387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:12:58,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 4597 Invalid, 8734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 8387 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-25 06:12:58,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-25 06:12:58,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 131. [2023-12-25 06:12:58,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 89 states have internal predecessors, (90), 3 states have call successors, (3), 2 states have call predecessors, (3), 39 states have return successors, (40), 39 states have call predecessors, (40), 3 states have call successors, (40) [2023-12-25 06:12:58,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2023-12-25 06:12:58,098 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 263 [2023-12-25 06:12:58,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:12:58,098 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2023-12-25 06:12:58,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 191 states have (on average 1.4240837696335078) internal successors, (272), 119 states have internal predecessors, (272), 40 states have call successors, (40), 1 states have call predecessors, (40), 74 states have return successors, (74), 74 states have call predecessors, (74), 40 states have call successors, (74) [2023-12-25 06:12:58,099 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2023-12-25 06:12:58,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-25 06:12:58,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:12:58,100 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:12:58,108 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 (41)] Forceful destruction successful, exit code 0 [2023-12-25 06:12:58,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:12:58,306 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:12:58,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:12:58,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1365502155, now seen corresponding path program 18 times [2023-12-25 06:12:58,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:12:58,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557407924] [2023-12-25 06:12:58,307 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:12:58,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:12:58,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:12:58,315 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:12:58,317 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 (42)] Waiting until timeout for monitored process [2023-12-25 06:12:59,367 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-12-25 06:12:59,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:12:59,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 158 conjunts are in the unsatisfiable core [2023-12-25 06:12:59,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:02,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2358 backedges. 0 proven. 1008 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2023-12-25 06:13:02,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2358 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-12-25 06:13:32,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:32,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557407924] [2023-12-25 06:13:32,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557407924] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:13:32,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:32,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 118] total 198 [2023-12-25 06:13:32,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736986569] [2023-12-25 06:13:32,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:32,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 198 states [2023-12-25 06:13:32,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:32,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2023-12-25 06:13:32,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=695, Invalid=38311, Unknown=0, NotChecked=0, Total=39006 [2023-12-25 06:13:32,042 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand has 198 states, 196 states have (on average 1.4234693877551021) internal successors, (279), 122 states have internal predecessors, (279), 41 states have call successors, (41), 1 states have call predecessors, (41), 76 states have return successors, (76), 76 states have call predecessors, (76), 41 states have call successors, (76) [2023-12-25 06:13:42,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:42,451 INFO L93 Difference]: Finished difference Result 248 states and 250 transitions. [2023-12-25 06:13:42,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-25 06:13:42,451 INFO L78 Accepts]: Start accepts. Automaton has has 198 states, 196 states have (on average 1.4234693877551021) internal successors, (279), 122 states have internal predecessors, (279), 41 states have call successors, (41), 1 states have call predecessors, (41), 76 states have return successors, (76), 76 states have call predecessors, (76), 41 states have call successors, (76) Word has length 270 [2023-12-25 06:13:42,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:42,452 INFO L225 Difference]: With dead ends: 248 [2023-12-25 06:13:42,452 INFO L226 Difference]: Without dead ends: 244 [2023-12-25 06:13:42,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 13605 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=2579, Invalid=72771, Unknown=0, NotChecked=0, Total=75350 [2023-12-25 06:13:42,456 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 58 mSDsluCounter, 5373 mSDsCounter, 0 mSdLazyCounter, 10191 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 5421 SdHoareTripleChecker+Invalid, 10214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 10191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:42,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 5421 Invalid, 10214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 10191 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-25 06:13:42,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-12-25 06:13:42,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 134. [2023-12-25 06:13:42,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 91 states have internal predecessors, (92), 3 states have call successors, (3), 2 states have call predecessors, (3), 40 states have return successors, (41), 40 states have call predecessors, (41), 3 states have call successors, (41) [2023-12-25 06:13:42,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 136 transitions. [2023-12-25 06:13:42,459 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 136 transitions. Word has length 270 [2023-12-25 06:13:42,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:42,459 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 136 transitions. [2023-12-25 06:13:42,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 198 states, 196 states have (on average 1.4234693877551021) internal successors, (279), 122 states have internal predecessors, (279), 41 states have call successors, (41), 1 states have call predecessors, (41), 76 states have return successors, (76), 76 states have call predecessors, (76), 41 states have call successors, (76) [2023-12-25 06:13:42,460 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 136 transitions. [2023-12-25 06:13:42,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-25 06:13:42,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:42,461 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:42,467 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 (42)] Forceful destruction successful, exit code 0 [2023-12-25 06:13:42,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:42,667 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:42,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:42,668 INFO L85 PathProgramCache]: Analyzing trace with hash -489620677, now seen corresponding path program 19 times [2023-12-25 06:13:42,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:42,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602030761] [2023-12-25 06:13:42,668 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:13:42,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:42,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:42,670 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:13:42,673 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 (43)] Waiting until timeout for monitored process [2023-12-25 06:13:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:13:43,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 161 conjunts are in the unsatisfiable core [2023-12-25 06:13:43,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2489 backedges. 0 proven. 1064 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2023-12-25 06:13:46,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:14:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2489 backedges. 0 proven. 2128 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2023-12-25 06:14:05,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:14:05,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602030761] [2023-12-25 06:14:05,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602030761] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:14:05,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:14:05,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 120] total 127 [2023-12-25 06:14:05,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783408428] [2023-12-25 06:14:05,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:14:05,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2023-12-25 06:14:05,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:14:05,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2023-12-25 06:14:05,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=15556, Unknown=0, NotChecked=0, Total=16002 [2023-12-25 06:14:05,699 INFO L87 Difference]: Start difference. First operand 134 states and 136 transitions. Second operand has 127 states, 126 states have (on average 1.6746031746031746) internal successors, (211), 86 states have internal predecessors, (211), 42 states have call successors, (42), 1 states have call predecessors, (42), 40 states have return successors, (78), 41 states have call predecessors, (78), 42 states have call successors, (78) [2023-12-25 06:14:12,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:14:12,176 INFO L93 Difference]: Finished difference Result 254 states and 256 transitions. [2023-12-25 06:14:12,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-25 06:14:12,177 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 126 states have (on average 1.6746031746031746) internal successors, (211), 86 states have internal predecessors, (211), 42 states have call successors, (42), 1 states have call predecessors, (42), 40 states have return successors, (78), 41 states have call predecessors, (78), 42 states have call successors, (78) Word has length 277 [2023-12-25 06:14:12,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:14:12,192 INFO L225 Difference]: With dead ends: 254 [2023-12-25 06:14:12,192 INFO L226 Difference]: Without dead ends: 250 [2023-12-25 06:14:12,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4025 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=2300, Invalid=39520, Unknown=0, NotChecked=0, Total=41820 [2023-12-25 06:14:12,196 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 409 mSDsluCounter, 2882 mSDsCounter, 0 mSdLazyCounter, 5923 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 6269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 5923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:14:12,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 2931 Invalid, 6269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 5923 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-25 06:14:12,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-12-25 06:14:12,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 137. [2023-12-25 06:14:12,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 93 states have internal predecessors, (94), 3 states have call successors, (3), 2 states have call predecessors, (3), 41 states have return successors, (42), 41 states have call predecessors, (42), 3 states have call successors, (42) [2023-12-25 06:14:12,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2023-12-25 06:14:12,207 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 277 [2023-12-25 06:14:12,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:14:12,207 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2023-12-25 06:14:12,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 126 states have (on average 1.6746031746031746) internal successors, (211), 86 states have internal predecessors, (211), 42 states have call successors, (42), 1 states have call predecessors, (42), 40 states have return successors, (78), 41 states have call predecessors, (78), 42 states have call successors, (78) [2023-12-25 06:14:12,207 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2023-12-25 06:14:12,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-12-25 06:14:12,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:14:12,208 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:14:12,214 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 (43)] Forceful destruction successful, exit code 0 [2023-12-25 06:14:12,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:14:12,415 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:14:12,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:14:12,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1273058267, now seen corresponding path program 19 times [2023-12-25 06:14:12,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:14:12,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067483630] [2023-12-25 06:14:12,415 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:14:12,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:14:12,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:14:12,416 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:14:12,438 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 (44)] Waiting until timeout for monitored process [2023-12-25 06:14:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:14:13,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 165 conjunts are in the unsatisfiable core [2023-12-25 06:14:13,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:14:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 0 proven. 1121 refuted. 0 times theorem prover too weak. 1501 trivial. 0 not checked. [2023-12-25 06:14:16,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:14:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 0 proven. 2242 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-12-25 06:14:32,418 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:14:32,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067483630] [2023-12-25 06:14:32,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067483630] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:14:32,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:14:32,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 123] total 130 [2023-12-25 06:14:32,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042868643] [2023-12-25 06:14:32,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:14:32,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2023-12-25 06:14:32,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:14:32,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2023-12-25 06:14:32,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=16313, Unknown=0, NotChecked=0, Total=16770 [2023-12-25 06:14:32,431 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand has 130 states, 129 states have (on average 1.6744186046511629) internal successors, (216), 88 states have internal predecessors, (216), 43 states have call successors, (43), 1 states have call predecessors, (43), 41 states have return successors, (80), 42 states have call predecessors, (80), 43 states have call successors, (80) [2023-12-25 06:14:37,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:14:37,833 INFO L93 Difference]: Finished difference Result 260 states and 262 transitions. [2023-12-25 06:14:37,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-25 06:14:37,833 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 129 states have (on average 1.6744186046511629) internal successors, (216), 88 states have internal predecessors, (216), 43 states have call successors, (43), 1 states have call predecessors, (43), 41 states have return successors, (80), 42 states have call predecessors, (80), 43 states have call successors, (80) Word has length 284 [2023-12-25 06:14:37,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:14:37,834 INFO L225 Difference]: With dead ends: 260 [2023-12-25 06:14:37,834 INFO L226 Difference]: Without dead ends: 256 [2023-12-25 06:14:37,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 437 SyntacticMatches, 1 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4293 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=2442, Invalid=41868, Unknown=0, NotChecked=0, Total=44310 [2023-12-25 06:14:37,837 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 146 mSDsluCounter, 3506 mSDsCounter, 0 mSdLazyCounter, 6971 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 3556 SdHoareTripleChecker+Invalid, 7028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 6971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:14:37,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 3556 Invalid, 7028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 6971 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-25 06:14:37,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-12-25 06:14:37,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 140. [2023-12-25 06:14:37,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 95 states have internal predecessors, (96), 3 states have call successors, (3), 2 states have call predecessors, (3), 42 states have return successors, (43), 42 states have call predecessors, (43), 3 states have call successors, (43) [2023-12-25 06:14:37,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 142 transitions. [2023-12-25 06:14:37,841 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 142 transitions. Word has length 284 [2023-12-25 06:14:37,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:14:37,841 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 142 transitions. [2023-12-25 06:14:37,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 129 states have (on average 1.6744186046511629) internal successors, (216), 88 states have internal predecessors, (216), 43 states have call successors, (43), 1 states have call predecessors, (43), 41 states have return successors, (80), 42 states have call predecessors, (80), 43 states have call successors, (80) [2023-12-25 06:14:37,842 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 142 transitions. [2023-12-25 06:14:37,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-25 06:14:37,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:14:37,843 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:14:37,851 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 (44)] Ended with exit code 0 [2023-12-25 06:14:38,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:14:38,049 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:14:38,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:14:38,050 INFO L85 PathProgramCache]: Analyzing trace with hash 386529573, now seen corresponding path program 20 times [2023-12-25 06:14:38,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:14:38,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918180349] [2023-12-25 06:14:38,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:14:38,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:14:38,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:14:38,051 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:14:38,053 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 (45)] Waiting until timeout for monitored process [2023-12-25 06:14:39,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:14:39,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:14:39,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 170 conjunts are in the unsatisfiable core [2023-12-25 06:14:39,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:14:43,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2760 backedges. 0 proven. 1180 refuted. 0 times theorem prover too weak. 1580 trivial. 0 not checked. [2023-12-25 06:14:43,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:15:09,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2760 backedges. 0 proven. 2360 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-12-25 06:15:09,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:15:09,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918180349] [2023-12-25 06:15:09,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918180349] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:15:09,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:15:09,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 126] total 212 [2023-12-25 06:15:09,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034897499] [2023-12-25 06:15:09,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:15:09,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 212 states [2023-12-25 06:15:09,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:15:09,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2023-12-25 06:15:09,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=744, Invalid=43988, Unknown=0, NotChecked=0, Total=44732 [2023-12-25 06:15:09,144 INFO L87 Difference]: Start difference. First operand 140 states and 142 transitions. Second operand has 212 states, 211 states have (on average 1.4218009478672986) internal successors, (300), 130 states have internal predecessors, (300), 44 states have call successors, (44), 1 states have call predecessors, (44), 82 states have return successors, (82), 82 states have call predecessors, (82), 44 states have call successors, (82) [2023-12-25 06:15:17,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:15:17,933 INFO L93 Difference]: Finished difference Result 266 states and 268 transitions. [2023-12-25 06:15:17,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-25 06:15:17,934 INFO L78 Accepts]: Start accepts. Automaton has has 212 states, 211 states have (on average 1.4218009478672986) internal successors, (300), 130 states have internal predecessors, (300), 44 states have call successors, (44), 1 states have call predecessors, (44), 82 states have return successors, (82), 82 states have call predecessors, (82), 44 states have call successors, (82) Word has length 291 [2023-12-25 06:15:17,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:15:17,935 INFO L225 Difference]: With dead ends: 266 [2023-12-25 06:15:17,935 INFO L226 Difference]: Without dead ends: 262 [2023-12-25 06:15:17,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15409 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=2854, Invalid=83288, Unknown=0, NotChecked=0, Total=86142 [2023-12-25 06:15:17,942 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 229 mSDsluCounter, 5302 mSDsCounter, 0 mSdLazyCounter, 10111 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 5353 SdHoareTripleChecker+Invalid, 10300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 10111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:15:17,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 5353 Invalid, 10300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 10111 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-25 06:15:17,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-25 06:15:17,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 143. [2023-12-25 06:15:17,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 97 states have internal predecessors, (98), 3 states have call successors, (3), 2 states have call predecessors, (3), 43 states have return successors, (44), 43 states have call predecessors, (44), 3 states have call successors, (44) [2023-12-25 06:15:17,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2023-12-25 06:15:17,967 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 291 [2023-12-25 06:15:17,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:15:17,967 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2023-12-25 06:15:17,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 212 states, 211 states have (on average 1.4218009478672986) internal successors, (300), 130 states have internal predecessors, (300), 44 states have call successors, (44), 1 states have call predecessors, (44), 82 states have return successors, (82), 82 states have call predecessors, (82), 44 states have call successors, (82) [2023-12-25 06:15:17,967 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2023-12-25 06:15:17,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-25 06:15:17,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:15:17,968 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:15:17,974 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 (45)] Forceful destruction successful, exit code 0 [2023-12-25 06:15:18,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:15:18,174 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:15:18,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:15:18,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1777237505, now seen corresponding path program 20 times [2023-12-25 06:15:18,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:15:18,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17022078] [2023-12-25 06:15:18,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:15:18,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:15:18,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:15:18,177 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:15:18,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-12-25 06:15:19,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:15:19,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:15:19,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 174 conjunts are in the unsatisfiable core [2023-12-25 06:15:19,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:15:22,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 0 proven. 1240 refuted. 0 times theorem prover too weak. 1660 trivial. 0 not checked. [2023-12-25 06:15:22,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:15:51,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 0 proven. 2480 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-25 06:15:51,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:15:51,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17022078] [2023-12-25 06:15:51,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17022078] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:15:51,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:15:51,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 130] total 218 [2023-12-25 06:15:51,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220382584] [2023-12-25 06:15:51,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:15:51,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 218 states [2023-12-25 06:15:51,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:15:51,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2023-12-25 06:15:51,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=767, Invalid=46539, Unknown=0, NotChecked=0, Total=47306 [2023-12-25 06:15:51,204 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand has 218 states, 216 states have (on average 1.4212962962962963) internal successors, (307), 134 states have internal predecessors, (307), 45 states have call successors, (45), 1 states have call predecessors, (45), 84 states have return successors, (84), 84 states have call predecessors, (84), 45 states have call successors, (84) [2023-12-25 06:16:01,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:16:01,636 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2023-12-25 06:16:01,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-12-25 06:16:01,636 INFO L78 Accepts]: Start accepts. Automaton has has 218 states, 216 states have (on average 1.4212962962962963) internal successors, (307), 134 states have internal predecessors, (307), 45 states have call successors, (45), 1 states have call predecessors, (45), 84 states have return successors, (84), 84 states have call predecessors, (84), 45 states have call successors, (84) Word has length 298 [2023-12-25 06:16:01,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:16:01,637 INFO L225 Difference]: With dead ends: 272 [2023-12-25 06:16:01,637 INFO L226 Difference]: Without dead ends: 268 [2023-12-25 06:16:01,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 16591 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=3017, Invalid=88489, Unknown=0, NotChecked=0, Total=91506 [2023-12-25 06:16:01,644 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 122 mSDsluCounter, 5867 mSDsCounter, 0 mSdLazyCounter, 11691 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5919 SdHoareTripleChecker+Invalid, 11738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 11691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:16:01,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5919 Invalid, 11738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 11691 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-25 06:16:01,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-12-25 06:16:01,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 146. [2023-12-25 06:16:01,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 99 states have internal predecessors, (100), 3 states have call successors, (3), 2 states have call predecessors, (3), 44 states have return successors, (45), 44 states have call predecessors, (45), 3 states have call successors, (45) [2023-12-25 06:16:01,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2023-12-25 06:16:01,649 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 298 [2023-12-25 06:16:01,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:16:01,649 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 148 transitions. [2023-12-25 06:16:01,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 218 states, 216 states have (on average 1.4212962962962963) internal successors, (307), 134 states have internal predecessors, (307), 45 states have call successors, (45), 1 states have call predecessors, (45), 84 states have return successors, (84), 84 states have call predecessors, (84), 45 states have call successors, (84) [2023-12-25 06:16:01,650 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 148 transitions. [2023-12-25 06:16:01,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-25 06:16:01,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:16:01,651 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:16:01,659 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 (46)] Ended with exit code 0 [2023-12-25 06:16:01,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:16:01,857 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:16:01,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:16:01,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1441521265, now seen corresponding path program 21 times [2023-12-25 06:16:01,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:16:01,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810806639] [2023-12-25 06:16:01,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:16:01,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:16:01,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:16:01,859 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:16:01,861 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 (47)] Waiting until timeout for monitored process [2023-12-25 06:16:03,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2023-12-25 06:16:03,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:16:03,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 178 conjunts are in the unsatisfiable core [2023-12-25 06:16:03,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:16:06,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 1302 refuted. 0 times theorem prover too weak. 1743 trivial. 0 not checked. [2023-12-25 06:16:06,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:16:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 2604 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2023-12-25 06:16:35,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:16:35,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810806639] [2023-12-25 06:16:35,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810806639] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:16:35,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:16:35,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 132] total 222 [2023-12-25 06:16:35,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131253082] [2023-12-25 06:16:35,863 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:16:35,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 222 states [2023-12-25 06:16:35,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:16:35,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2023-12-25 06:16:35,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=48282, Unknown=0, NotChecked=0, Total=49062 [2023-12-25 06:16:35,867 INFO L87 Difference]: Start difference. First operand 146 states and 148 transitions. Second operand has 222 states, 221 states have (on average 1.420814479638009) internal successors, (314), 136 states have internal predecessors, (314), 46 states have call successors, (46), 1 states have call predecessors, (46), 86 states have return successors, (86), 86 states have call predecessors, (86), 46 states have call successors, (86) [2023-12-25 06:16:45,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:16:45,946 INFO L93 Difference]: Finished difference Result 278 states and 280 transitions. [2023-12-25 06:16:45,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-12-25 06:16:45,946 INFO L78 Accepts]: Start accepts. Automaton has has 222 states, 221 states have (on average 1.420814479638009) internal successors, (314), 136 states have internal predecessors, (314), 46 states have call successors, (46), 1 states have call predecessors, (46), 86 states have return successors, (86), 86 states have call predecessors, (86), 46 states have call successors, (86) Word has length 305 [2023-12-25 06:16:45,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:16:45,947 INFO L225 Difference]: With dead ends: 278 [2023-12-25 06:16:45,947 INFO L226 Difference]: Without dead ends: 274 [2023-12-25 06:16:45,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16956 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=3079, Invalid=91477, Unknown=0, NotChecked=0, Total=94556 [2023-12-25 06:16:45,955 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 374 mSDsluCounter, 6369 mSDsCounter, 0 mSdLazyCounter, 11744 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 6422 SdHoareTripleChecker+Invalid, 12057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 11744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:16:45,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 6422 Invalid, 12057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 11744 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-25 06:16:45,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-12-25 06:16:45,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 149. [2023-12-25 06:16:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 100 states have (on average 1.02) internal successors, (102), 101 states have internal predecessors, (102), 3 states have call successors, (3), 2 states have call predecessors, (3), 45 states have return successors, (46), 45 states have call predecessors, (46), 3 states have call successors, (46) [2023-12-25 06:16:45,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2023-12-25 06:16:45,987 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 305 [2023-12-25 06:16:45,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:16:45,987 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2023-12-25 06:16:45,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 222 states, 221 states have (on average 1.420814479638009) internal successors, (314), 136 states have internal predecessors, (314), 46 states have call successors, (46), 1 states have call predecessors, (46), 86 states have return successors, (86), 86 states have call predecessors, (86), 46 states have call successors, (86) [2023-12-25 06:16:45,987 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2023-12-25 06:16:45,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2023-12-25 06:16:45,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:16:45,988 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:16:45,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2023-12-25 06:16:46,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:16:46,189 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:16:46,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:16:46,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1242565209, now seen corresponding path program 21 times [2023-12-25 06:16:46,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:16:46,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644400787] [2023-12-25 06:16:46,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:16:46,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:16:46,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:16:46,192 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:16:46,198 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 (48)] Waiting until timeout for monitored process [2023-12-25 06:16:47,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2023-12-25 06:16:47,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:16:47,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 182 conjunts are in the unsatisfiable core [2023-12-25 06:16:47,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:16:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 1827 trivial. 0 not checked. [2023-12-25 06:16:51,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:17:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-12-25 06:17:23,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:17:23,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644400787] [2023-12-25 06:17:23,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644400787] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:17:23,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:17:23,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 136] total 228 [2023-12-25 06:17:23,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651811552] [2023-12-25 06:17:23,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:17:23,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 228 states [2023-12-25 06:17:23,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:17:23,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2023-12-25 06:17:23,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=50953, Unknown=0, NotChecked=0, Total=51756 [2023-12-25 06:17:23,910 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand has 228 states, 226 states have (on average 1.420353982300885) internal successors, (321), 140 states have internal predecessors, (321), 47 states have call successors, (47), 1 states have call predecessors, (47), 88 states have return successors, (88), 88 states have call predecessors, (88), 47 states have call successors, (88) [2023-12-25 06:17:36,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:17:36,912 INFO L93 Difference]: Finished difference Result 284 states and 286 transitions. [2023-12-25 06:17:36,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-12-25 06:17:36,912 INFO L78 Accepts]: Start accepts. Automaton has has 228 states, 226 states have (on average 1.420353982300885) internal successors, (321), 140 states have internal predecessors, (321), 47 states have call successors, (47), 1 states have call predecessors, (47), 88 states have return successors, (88), 88 states have call predecessors, (88), 47 states have call successors, (88) Word has length 312 [2023-12-25 06:17:36,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:17:36,913 INFO L225 Difference]: With dead ends: 284 [2023-12-25 06:17:36,913 INFO L226 Difference]: Without dead ends: 280 [2023-12-25 06:17:36,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 18195 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=3248, Invalid=96924, Unknown=0, NotChecked=0, Total=100172 [2023-12-25 06:17:36,916 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 146 mSDsluCounter, 6168 mSDsCounter, 0 mSdLazyCounter, 12494 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 6222 SdHoareTripleChecker+Invalid, 12556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 12494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:17:36,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 6222 Invalid, 12556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 12494 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-25 06:17:36,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-12-25 06:17:36,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 152. [2023-12-25 06:17:36,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 103 states have internal predecessors, (104), 3 states have call successors, (3), 2 states have call predecessors, (3), 46 states have return successors, (47), 46 states have call predecessors, (47), 3 states have call successors, (47) [2023-12-25 06:17:36,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 154 transitions. [2023-12-25 06:17:36,920 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 154 transitions. Word has length 312 [2023-12-25 06:17:36,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:17:36,920 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 154 transitions. [2023-12-25 06:17:36,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 228 states, 226 states have (on average 1.420353982300885) internal successors, (321), 140 states have internal predecessors, (321), 47 states have call successors, (47), 1 states have call predecessors, (47), 88 states have return successors, (88), 88 states have call predecessors, (88), 47 states have call successors, (88) [2023-12-25 06:17:36,921 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 154 transitions. [2023-12-25 06:17:36,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-12-25 06:17:36,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:17:36,922 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:17:36,929 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 (48)] Forceful destruction successful, exit code 0 [2023-12-25 06:17:37,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:17:37,123 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:17:37,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:17:37,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1903553415, now seen corresponding path program 22 times [2023-12-25 06:17:37,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:17:37,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883423656] [2023-12-25 06:17:37,123 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:17:37,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:17:37,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:17:37,124 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:17:37,158 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 (49)] Waiting until timeout for monitored process [2023-12-25 06:17:38,621 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:17:38,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:17:38,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 185 conjunts are in the unsatisfiable core [2023-12-25 06:17:38,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:17:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3344 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 1914 trivial. 0 not checked. [2023-12-25 06:17:43,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:18:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3344 backedges. 0 proven. 2860 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-12-25 06:18:09,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:18:09,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883423656] [2023-12-25 06:18:09,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883423656] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:18:09,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:18:09,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 138] total 145 [2023-12-25 06:18:09,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24615315] [2023-12-25 06:18:09,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:18:09,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 145 states [2023-12-25 06:18:09,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:18:09,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2023-12-25 06:18:09,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=512, Invalid=20368, Unknown=0, NotChecked=0, Total=20880 [2023-12-25 06:18:09,602 INFO L87 Difference]: Start difference. First operand 152 states and 154 transitions. Second operand has 145 states, 144 states have (on average 1.6736111111111112) internal successors, (241), 98 states have internal predecessors, (241), 48 states have call successors, (48), 1 states have call predecessors, (48), 46 states have return successors, (90), 47 states have call predecessors, (90), 48 states have call successors, (90) [2023-12-25 06:18:18,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:18:18,447 INFO L93 Difference]: Finished difference Result 290 states and 292 transitions. [2023-12-25 06:18:18,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-25 06:18:18,447 INFO L78 Accepts]: Start accepts. Automaton has has 145 states, 144 states have (on average 1.6736111111111112) internal successors, (241), 98 states have internal predecessors, (241), 48 states have call successors, (48), 1 states have call predecessors, (48), 46 states have return successors, (90), 47 states have call predecessors, (90), 48 states have call successors, (90) Word has length 319 [2023-12-25 06:18:18,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:18:18,448 INFO L225 Difference]: With dead ends: 290 [2023-12-25 06:18:18,448 INFO L226 Difference]: Without dead ends: 286 [2023-12-25 06:18:18,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 492 SyntacticMatches, 1 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5322 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=2921, Invalid=52069, Unknown=0, NotChecked=0, Total=54990 [2023-12-25 06:18:18,453 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 105 mSDsluCounter, 4002 mSDsCounter, 0 mSdLazyCounter, 7753 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 4057 SdHoareTripleChecker+Invalid, 7788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 7753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:18:18,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 4057 Invalid, 7788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 7753 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-25 06:18:18,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-12-25 06:18:18,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 155. [2023-12-25 06:18:18,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 105 states have internal predecessors, (106), 3 states have call successors, (3), 2 states have call predecessors, (3), 47 states have return successors, (48), 47 states have call predecessors, (48), 3 states have call successors, (48) [2023-12-25 06:18:18,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2023-12-25 06:18:18,477 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 319 [2023-12-25 06:18:18,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:18:18,477 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2023-12-25 06:18:18,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 144 states have (on average 1.6736111111111112) internal successors, (241), 98 states have internal predecessors, (241), 48 states have call successors, (48), 1 states have call predecessors, (48), 46 states have return successors, (90), 47 states have call predecessors, (90), 48 states have call successors, (90) [2023-12-25 06:18:18,477 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2023-12-25 06:18:18,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-12-25 06:18:18,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:18:18,479 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:18:18,486 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 (49)] Forceful destruction successful, exit code 0 [2023-12-25 06:18:18,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:18:18,686 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:18:18,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:18:18,686 INFO L85 PathProgramCache]: Analyzing trace with hash 60155187, now seen corresponding path program 22 times [2023-12-25 06:18:18,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:18:18,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970805738] [2023-12-25 06:18:18,686 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:18:18,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:18:18,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:18:18,688 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:18:18,689 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 (50)] Waiting until timeout for monitored process [2023-12-25 06:18:20,109 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:18:20,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:18:20,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 189 conjunts are in the unsatisfiable core [2023-12-25 06:18:20,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:18:24,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3498 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2023-12-25 06:18:24,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:18:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3498 backedges. 0 proven. 2992 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2023-12-25 06:18:47,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:18:47,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970805738] [2023-12-25 06:18:47,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970805738] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:18:47,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:18:47,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 141] total 148 [2023-12-25 06:18:47,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785865111] [2023-12-25 06:18:47,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:18:47,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 148 states [2023-12-25 06:18:47,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:18:47,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2023-12-25 06:18:47,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=21233, Unknown=0, NotChecked=0, Total=21756 [2023-12-25 06:18:47,519 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand has 148 states, 147 states have (on average 1.6734693877551021) internal successors, (246), 100 states have internal predecessors, (246), 49 states have call successors, (49), 1 states have call predecessors, (49), 47 states have return successors, (92), 48 states have call predecessors, (92), 49 states have call successors, (92) [2023-12-25 06:18:57,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:18:57,238 INFO L93 Difference]: Finished difference Result 296 states and 298 transitions. [2023-12-25 06:18:57,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-12-25 06:18:57,238 INFO L78 Accepts]: Start accepts. Automaton has has 148 states, 147 states have (on average 1.6734693877551021) internal successors, (246), 100 states have internal predecessors, (246), 49 states have call successors, (49), 1 states have call predecessors, (49), 47 states have return successors, (92), 48 states have call predecessors, (92), 49 states have call successors, (92) Word has length 326 [2023-12-25 06:18:57,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:18:57,239 INFO L225 Difference]: With dead ends: 296 [2023-12-25 06:18:57,239 INFO L226 Difference]: Without dead ends: 292 [2023-12-25 06:18:57,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 743 GetRequests, 503 SyntacticMatches, 1 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5625 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=3081, Invalid=54759, Unknown=0, NotChecked=0, Total=57840 [2023-12-25 06:18:57,242 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 203 mSDsluCounter, 4505 mSDsCounter, 0 mSdLazyCounter, 9117 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 4561 SdHoareTripleChecker+Invalid, 9202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 9117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:18:57,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 4561 Invalid, 9202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 9117 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-25 06:18:57,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-25 06:18:57,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 158. [2023-12-25 06:18:57,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 107 states have internal predecessors, (108), 3 states have call successors, (3), 2 states have call predecessors, (3), 48 states have return successors, (49), 48 states have call predecessors, (49), 3 states have call successors, (49) [2023-12-25 06:18:57,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 160 transitions. [2023-12-25 06:18:57,246 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 160 transitions. Word has length 326 [2023-12-25 06:18:57,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:18:57,246 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 160 transitions. [2023-12-25 06:18:57,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 148 states, 147 states have (on average 1.6734693877551021) internal successors, (246), 100 states have internal predecessors, (246), 49 states have call successors, (49), 1 states have call predecessors, (49), 47 states have return successors, (92), 48 states have call predecessors, (92), 49 states have call successors, (92) [2023-12-25 06:18:57,247 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 160 transitions. [2023-12-25 06:18:57,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2023-12-25 06:18:57,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:18:57,248 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:18:57,262 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 (50)] Forceful destruction successful, exit code 0 [2023-12-25 06:18:57,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:18:57,459 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:18:57,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:18:57,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1095863837, now seen corresponding path program 23 times [2023-12-25 06:18:57,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:18:57,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532512333] [2023-12-25 06:18:57,460 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:18:57,460 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:18:57,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:18:57,461 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:18:57,468 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 (51)] Waiting until timeout for monitored process [2023-12-25 06:18:59,240 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-12-25 06:18:59,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:18:59,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 194 conjunts are in the unsatisfiable core [2023-12-25 06:18:59,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:19:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3657 backedges. 0 proven. 1564 refuted. 0 times theorem prover too weak. 2093 trivial. 0 not checked. [2023-12-25 06:19:03,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:19:42,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3657 backedges. 0 proven. 3128 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2023-12-25 06:19:42,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:19:42,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532512333] [2023-12-25 06:19:42,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532512333] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:19:42,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:19:42,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 144] total 242 [2023-12-25 06:19:42,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142308394] [2023-12-25 06:19:42,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:19:42,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 242 states [2023-12-25 06:19:42,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:19:42,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 242 interpolants. [2023-12-25 06:19:42,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=852, Invalid=57470, Unknown=0, NotChecked=0, Total=58322 [2023-12-25 06:19:42,159 INFO L87 Difference]: Start difference. First operand 158 states and 160 transitions. Second operand has 242 states, 241 states have (on average 1.4190871369294606) internal successors, (342), 148 states have internal predecessors, (342), 50 states have call successors, (50), 1 states have call predecessors, (50), 94 states have return successors, (94), 94 states have call predecessors, (94), 50 states have call successors, (94) Received shutdown request... [2023-12-25 06:19:54,172 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 (51)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 06:19:54,172 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 [2023-12-25 06:19:54,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-12-25 06:19:54,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19148 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=3318, Invalid=103284, Unknown=0, NotChecked=0, Total=106602 [2023-12-25 06:19:54,191 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 98 mSDsluCounter, 6975 mSDsCounter, 0 mSdLazyCounter, 13423 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 7026 SdHoareTripleChecker+Invalid, 13457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 13423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:19:54,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 7026 Invalid, 13457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 13423 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-25 06:19:54,192 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 06:19:54,200 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 (51)] Forceful destruction successful, exit code 0 [2023-12-25 06:19:54,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:19:54,400 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (158states) and FLOYD_HOARE automaton (currently 90 states, 242 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 327 known predicates. [2023-12-25 06:19:54,403 INFO L445 BasicCegarLoop]: Path program histogram: [23, 22, 1, 1, 1, 1, 1] [2023-12-25 06:19:54,405 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 06:19:54,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 06:19:54 BoogieIcfgContainer [2023-12-25 06:19:54,406 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 06:19:54,406 INFO L158 Benchmark]: Toolchain (without parser) took 871534.56ms. Allocated memory was 310.4MB in the beginning and 946.9MB in the end (delta: 636.5MB). Free memory was 262.7MB in the beginning and 360.2MB in the end (delta: -97.4MB). Peak memory consumption was 539.0MB. Max. memory is 8.0GB. [2023-12-25 06:19:54,406 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory is still 137.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 06:19:54,406 INFO L158 Benchmark]: CACSL2BoogieTranslator took 162.37ms. Allocated memory is still 310.4MB. Free memory was 262.2MB in the beginning and 251.2MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 06:19:54,406 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.41ms. Allocated memory is still 310.4MB. Free memory was 251.2MB in the beginning and 249.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 06:19:54,407 INFO L158 Benchmark]: Boogie Preprocessor took 26.57ms. Allocated memory is still 310.4MB. Free memory was 249.6MB in the beginning and 248.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 06:19:54,407 INFO L158 Benchmark]: RCFGBuilder took 251.18ms. Allocated memory is still 310.4MB. Free memory was 248.1MB in the beginning and 236.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 06:19:54,407 INFO L158 Benchmark]: TraceAbstraction took 871056.93ms. Allocated memory was 310.4MB in the beginning and 946.9MB in the end (delta: 636.5MB). Free memory was 236.0MB in the beginning and 360.2MB in the end (delta: -124.2MB). Peak memory consumption was 512.8MB. Max. memory is 8.0GB. [2023-12-25 06:19:54,407 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory is still 137.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 162.37ms. Allocated memory is still 310.4MB. Free memory was 262.2MB in the beginning and 251.2MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.41ms. Allocated memory is still 310.4MB. Free memory was 251.2MB in the beginning and 249.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.57ms. Allocated memory is still 310.4MB. Free memory was 249.6MB in the beginning and 248.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 251.18ms. Allocated memory is still 310.4MB. Free memory was 248.1MB in the beginning and 236.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 871056.93ms. Allocated memory was 310.4MB in the beginning and 946.9MB in the end (delta: 636.5MB). Free memory was 236.0MB in the beginning and 360.2MB in the end (delta: -124.2MB). Peak memory consumption was 512.8MB. 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: 49]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 49). Cancelled while NwaCegarLoop was constructing difference of abstraction (158states) and FLOYD_HOARE automaton (currently 90 states, 242 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 327 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 871.0s, OverallIterations: 50, TraceHistogramMax: 24, PathProgramHistogramMax: 23, EmptinessCheckTime: 0.0s, AutomataDifference: 195.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5475 SdHoareTripleChecker+Valid, 78.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4987 mSDsluCounter, 110421 SdHoareTripleChecker+Invalid, 67.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 108773 mSDsCounter, 2945 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 211886 IncrementalHoareTripleChecker+Invalid, 214831 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2945 mSolverCounterUnsat, 1648 mSDtfsCounter, 211886 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18369 GetRequests, 11081 SyntacticMatches, 13 SemanticMatches, 7274 ConstructedPredicates, 0 IntricatePredicates, 15 DeprecatedPredicates, 234183 ImplicationChecksByTransitivity, 368.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=49, InterpolantAutomatonStates: 2478, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 49 MinimizatonAttempts, 3064 StatesRemovedByMinimization, 47 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 641.0s InterpolantComputationTime, 8135 NumberOfCodeBlocks, 8135 NumberOfCodeBlocksAsserted, 315 NumberOfCheckSat, 16095 ConstructedInterpolants, 15 QuantifiedInterpolants, 95119 SizeOfPredicates, 1179 NumberOfNonLiveVariables, 11103 ConjunctsInSsa, 4792 ConjunctsInUnsatCore, 95 InterpolantComputations, 5 PerfectInterpolantSequences, 41335/115096 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