/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/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 02:14:21,336 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 02:14:21,402 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 02:14:21,407 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 02:14:21,407 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 02:14:21,429 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 02:14:21,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 02:14:21,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 02:14:21,431 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 02:14:21,433 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 02:14:21,434 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 02:14:21,434 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 02:14:21,434 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 02:14:21,435 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 02:14:21,436 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 02:14:21,436 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 02:14:21,436 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 02:14:21,436 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 02:14:21,436 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 02:14:21,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 02:14:21,437 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 02:14:21,437 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 02:14:21,437 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 02:14:21,437 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 02:14:21,437 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 02:14:21,438 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 02:14:21,438 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 02:14:21,438 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 02:14:21,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 02:14:21,438 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 02:14:21,439 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 02:14:21,439 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 02:14:21,439 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 02:14:21,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 02:14:21,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 02:14:21,439 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 02:14:21,440 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 02:14:21,440 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 02:14:21,440 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 02:14:21,440 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 02:14:21,440 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 02:14:21,440 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 02:14:21,440 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 02:14:21,440 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 02:14:21,441 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 02:14:21,441 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 02:14:21,441 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 02:14:21,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 02:14:21,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 02:14:21,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 02:14:21,639 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 02:14:21,639 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 02:14:21,641 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label04.c [2023-12-22 02:14:22,753 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 02:14:23,115 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 02:14:23,115 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label04.c [2023-12-22 02:14:23,145 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7546c187b/21cc458f84e248009b222b3c8a147230/FLAGf6343195b [2023-12-22 02:14:23,160 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7546c187b/21cc458f84e248009b222b3c8a147230 [2023-12-22 02:14:23,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 02:14:23,164 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 02:14:23,166 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 02:14:23,166 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 02:14:23,170 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 02:14:23,171 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:14:23" (1/1) ... [2023-12-22 02:14:23,172 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6662e091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:23, skipping insertion in model container [2023-12-22 02:14:23,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:14:23" (1/1) ... [2023-12-22 02:14:23,282 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 02:14:23,721 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label04.c[26897,26910] [2023-12-22 02:14:23,805 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label04.c[33958,33971] [2023-12-22 02:14:24,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 02:14:24,335 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 02:14:24,379 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label04.c[26897,26910] [2023-12-22 02:14:24,389 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label04.c[33958,33971] [2023-12-22 02:14:24,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 02:14:24,768 INFO L206 MainTranslator]: Completed translation [2023-12-22 02:14:24,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:24 WrapperNode [2023-12-22 02:14:24,770 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 02:14:24,771 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 02:14:24,771 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 02:14:24,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 02:14:24,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:24" (1/1) ... [2023-12-22 02:14:24,823 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:24" (1/1) ... [2023-12-22 02:14:24,986 INFO L138 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5252 [2023-12-22 02:14:24,986 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 02:14:24,987 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 02:14:24,987 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 02:14:24,987 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 02:14:24,997 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:24" (1/1) ... [2023-12-22 02:14:24,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:24" (1/1) ... [2023-12-22 02:14:25,031 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:24" (1/1) ... [2023-12-22 02:14:25,095 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-22 02:14:25,095 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:24" (1/1) ... [2023-12-22 02:14:25,095 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:24" (1/1) ... [2023-12-22 02:14:25,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:24" (1/1) ... [2023-12-22 02:14:25,201 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:24" (1/1) ... [2023-12-22 02:14:25,224 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:24" (1/1) ... [2023-12-22 02:14:25,306 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:24" (1/1) ... [2023-12-22 02:14:25,348 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 02:14:25,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 02:14:25,350 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 02:14:25,350 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 02:14:25,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:24" (1/1) ... [2023-12-22 02:14:25,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 02:14:25,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 02:14:25,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-22 02:14:25,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-22 02:14:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 02:14:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 02:14:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 02:14:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 02:14:25,551 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 02:14:25,552 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 02:14:52,373 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 02:14:52,431 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 02:14:52,431 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-22 02:14:52,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:14:52 BoogieIcfgContainer [2023-12-22 02:14:52,432 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 02:14:52,434 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 02:14:52,434 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 02:14:52,436 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 02:14:52,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:14:23" (1/3) ... [2023-12-22 02:14:52,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1981ade7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:14:52, skipping insertion in model container [2023-12-22 02:14:52,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:24" (2/3) ... [2023-12-22 02:14:52,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1981ade7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:14:52, skipping insertion in model container [2023-12-22 02:14:52,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:14:52" (3/3) ... [2023-12-22 02:14:52,438 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label04.c [2023-12-22 02:14:52,450 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 02:14:52,451 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-22 02:14:52,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 02:14:52,508 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;@371eb3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 02:14:52,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-22 02:14:52,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 882 states, 879 states have (on average 1.9704209328782707) internal successors, (1732), 881 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:14:52,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-22 02:14:52,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:14:52,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:14:52,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:14:52,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:14:52,530 INFO L85 PathProgramCache]: Analyzing trace with hash -31988621, now seen corresponding path program 1 times [2023-12-22 02:14:52,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:14:52,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152678685] [2023-12-22 02:14:52,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:14:52,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:14:52,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:14:52,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:14:52,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-22 02:14:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:14:52,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 02:14:52,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:14:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:14:52,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:14:52,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:14:52,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152678685] [2023-12-22 02:14:52,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152678685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:14:52,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:14:52,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:14:52,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927928950] [2023-12-22 02:14:52,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:14:52,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 02:14:52,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:14:52,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 02:14:52,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 02:14:52,761 INFO L87 Difference]: Start difference. First operand has 882 states, 879 states have (on average 1.9704209328782707) internal successors, (1732), 881 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:14:52,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:14:52,868 INFO L93 Difference]: Finished difference Result 1699 states and 3336 transitions. [2023-12-22 02:14:52,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 02:14:52,873 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-22 02:14:52,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:14:52,897 INFO L225 Difference]: With dead ends: 1699 [2023-12-22 02:14:52,897 INFO L226 Difference]: Without dead ends: 878 [2023-12-22 02:14:52,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 02:14:52,904 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:14:52,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1661 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:14:52,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-12-22 02:14:52,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2023-12-22 02:14:52,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8961187214611872) internal successors, (1661), 877 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:14:52,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1661 transitions. [2023-12-22 02:14:52,989 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1661 transitions. Word has length 27 [2023-12-22 02:14:52,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:14:52,990 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1661 transitions. [2023-12-22 02:14:52,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:14:52,990 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1661 transitions. [2023-12-22 02:14:52,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-22 02:14:52,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:14:52,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:14:53,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-22 02:14:53,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:14:53,197 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:14:53,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:14:53,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1837426955, now seen corresponding path program 1 times [2023-12-22 02:14:53,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:14:53,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963530534] [2023-12-22 02:14:53,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:14:53,200 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:14:53,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:14:53,201 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:14:53,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-22 02:14:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:14:53,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:14:53,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:14:53,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:14:53,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:14:53,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:14:53,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963530534] [2023-12-22 02:14:53,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963530534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:14:53,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:14:53,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:14:53,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340517424] [2023-12-22 02:14:53,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:14:53,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:14:53,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:14:53,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:14:53,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:14:53,417 INFO L87 Difference]: Start difference. First operand 878 states and 1661 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:14:53,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:14:53,544 INFO L93 Difference]: Finished difference Result 940 states and 1760 transitions. [2023-12-22 02:14:53,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:14:53,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-22 02:14:53,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:14:53,550 INFO L225 Difference]: With dead ends: 940 [2023-12-22 02:14:53,550 INFO L226 Difference]: Without dead ends: 878 [2023-12-22 02:14:53,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:14:53,552 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 0 mSDsluCounter, 3251 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4909 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:14:53,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4909 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:14:53,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-12-22 02:14:53,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2023-12-22 02:14:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.82648401826484) internal successors, (1600), 877 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:14:53,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1600 transitions. [2023-12-22 02:14:53,582 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1600 transitions. Word has length 27 [2023-12-22 02:14:53,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:14:53,582 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1600 transitions. [2023-12-22 02:14:53,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:14:53,583 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1600 transitions. [2023-12-22 02:14:53,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-22 02:14:53,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:14:53,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:14:53,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-22 02:14:53,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:14:53,796 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:14:53,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:14:53,797 INFO L85 PathProgramCache]: Analyzing trace with hash 715738867, now seen corresponding path program 1 times [2023-12-22 02:14:53,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:14:53,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496763000] [2023-12-22 02:14:53,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:14:53,798 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:14:53,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:14:53,799 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:14:53,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-22 02:14:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:14:53,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:14:53,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:14:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:14:53,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:14:53,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:14:53,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496763000] [2023-12-22 02:14:53,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496763000] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:14:53,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:14:53,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:14:53,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756175877] [2023-12-22 02:14:53,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:14:53,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:14:53,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:14:54,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:14:54,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:14:54,000 INFO L87 Difference]: Start difference. First operand 878 states and 1600 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:28,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:15:28,898 INFO L93 Difference]: Finished difference Result 2382 states and 4473 transitions. [2023-12-22 02:15:28,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:15:28,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-22 02:15:28,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:15:28,905 INFO L225 Difference]: With dead ends: 2382 [2023-12-22 02:15:28,905 INFO L226 Difference]: Without dead ends: 1629 [2023-12-22 02:15:28,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:28,907 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 880 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.7s IncrementalHoareTripleChecker+Time [2023-12-22 02:15:28,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 382 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 34.7s Time] [2023-12-22 02:15:28,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2023-12-22 02:15:28,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2023-12-22 02:15:28,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1627 states have (on average 1.7400122925629995) internal successors, (2831), 1628 states have internal predecessors, (2831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:28,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2831 transitions. [2023-12-22 02:15:28,933 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2831 transitions. Word has length 60 [2023-12-22 02:15:28,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:15:28,933 INFO L495 AbstractCegarLoop]: Abstraction has 1629 states and 2831 transitions. [2023-12-22 02:15:28,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:28,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2831 transitions. [2023-12-22 02:15:28,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-22 02:15:28,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:15:28,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:15:28,939 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 [2023-12-22 02:15:29,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:29,139 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:15:29,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:15:29,139 INFO L85 PathProgramCache]: Analyzing trace with hash -470628699, now seen corresponding path program 1 times [2023-12-22 02:15:29,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:15:29,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037584640] [2023-12-22 02:15:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:15:29,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:29,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:15:29,141 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:15:29,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-22 02:15:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:15:29,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:15:29,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:15:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:31,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:15:31,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:15:31,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037584640] [2023-12-22 02:15:31,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037584640] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:15:31,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:15:31,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-22 02:15:31,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321228912] [2023-12-22 02:15:31,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:15:31,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-22 02:15:31,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:15:31,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-22 02:15:31,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2023-12-22 02:15:31,082 INFO L87 Difference]: Start difference. First operand 1629 states and 2831 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:31,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:15:31,574 INFO L93 Difference]: Finished difference Result 2160 states and 3695 transitions. [2023-12-22 02:15:31,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-22 02:15:31,576 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-22 02:15:31,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:15:31,584 INFO L225 Difference]: With dead ends: 2160 [2023-12-22 02:15:31,585 INFO L226 Difference]: Without dead ends: 2101 [2023-12-22 02:15:31,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2023-12-22 02:15:31,587 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6776 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6776 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:15:31,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6776 Valid, 2560 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:15:31,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2023-12-22 02:15:31,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 1743. [2023-12-22 02:15:31,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1743 states, 1741 states have (on average 1.733486502010339) internal successors, (3018), 1742 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:31,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 3018 transitions. [2023-12-22 02:15:31,622 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 3018 transitions. Word has length 87 [2023-12-22 02:15:31,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:15:31,623 INFO L495 AbstractCegarLoop]: Abstraction has 1743 states and 3018 transitions. [2023-12-22 02:15:31,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:31,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 3018 transitions. [2023-12-22 02:15:31,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-22 02:15:31,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:15:31,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:15:31,631 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 [2023-12-22 02:15:31,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:31,832 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:15:31,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:15:31,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1442819851, now seen corresponding path program 1 times [2023-12-22 02:15:31,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:15:31,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349503976] [2023-12-22 02:15:31,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:15:31,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:31,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:15:31,836 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:15:31,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-22 02:15:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:15:31,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:15:31,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:15:32,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:32,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:15:32,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:15:32,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349503976] [2023-12-22 02:15:32,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349503976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:15:32,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:15:32,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:15:32,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232460965] [2023-12-22 02:15:32,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:15:32,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:15:32,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:15:32,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:15:32,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:32,088 INFO L87 Difference]: Start difference. First operand 1743 states and 3018 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:32,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:15:32,143 INFO L93 Difference]: Finished difference Result 2073 states and 3556 transitions. [2023-12-22 02:15:32,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:15:32,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-22 02:15:32,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:15:32,149 INFO L225 Difference]: With dead ends: 2073 [2023-12-22 02:15:32,149 INFO L226 Difference]: Without dead ends: 1900 [2023-12-22 02:15:32,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:32,150 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 1504 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:15:32,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1686 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:15:32,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2023-12-22 02:15:32,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1898. [2023-12-22 02:15:32,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1898 states, 1896 states have (on average 1.7231012658227849) internal successors, (3267), 1897 states have internal predecessors, (3267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:32,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 3267 transitions. [2023-12-22 02:15:32,181 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 3267 transitions. Word has length 89 [2023-12-22 02:15:32,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:15:32,183 INFO L495 AbstractCegarLoop]: Abstraction has 1898 states and 3267 transitions. [2023-12-22 02:15:32,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:32,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 3267 transitions. [2023-12-22 02:15:32,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-22 02:15:32,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:15:32,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:15:32,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-22 02:15:32,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:32,393 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:15:32,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:15:32,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1840151110, now seen corresponding path program 1 times [2023-12-22 02:15:32,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:15:32,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696619533] [2023-12-22 02:15:32,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:15:32,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:32,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:15:32,397 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:15:32,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-22 02:15:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:15:32,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:15:32,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:15:32,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:32,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:15:32,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:15:32,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696619533] [2023-12-22 02:15:32,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696619533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:15:32,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:15:32,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:15:32,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025597272] [2023-12-22 02:15:32,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:15:32,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:15:32,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:15:32,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:15:32,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:15:32,562 INFO L87 Difference]: Start difference. First operand 1898 states and 3267 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:32,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:15:32,642 INFO L93 Difference]: Finished difference Result 1912 states and 3284 transitions. [2023-12-22 02:15:32,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:15:32,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-22 02:15:32,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:15:32,650 INFO L225 Difference]: With dead ends: 1912 [2023-12-22 02:15:32,650 INFO L226 Difference]: Without dead ends: 1910 [2023-12-22 02:15:32,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:15:32,653 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 1 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4780 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:15:32,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4780 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:15:32,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2023-12-22 02:15:32,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1906. [2023-12-22 02:15:32,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1904 states have (on average 1.7195378151260505) internal successors, (3274), 1905 states have internal predecessors, (3274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:32,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 3274 transitions. [2023-12-22 02:15:32,684 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 3274 transitions. Word has length 90 [2023-12-22 02:15:32,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:15:32,685 INFO L495 AbstractCegarLoop]: Abstraction has 1906 states and 3274 transitions. [2023-12-22 02:15:32,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:32,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 3274 transitions. [2023-12-22 02:15:32,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:15:32,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:15:32,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:15:32,701 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 [2023-12-22 02:15:32,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:32,891 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:15:32,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:15:32,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1591939181, now seen corresponding path program 1 times [2023-12-22 02:15:32,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:15:32,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115959391] [2023-12-22 02:15:32,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:15:32,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:32,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:15:32,893 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:15:32,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-22 02:15:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:15:33,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:15:33,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:15:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:33,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:15:33,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:15:33,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115959391] [2023-12-22 02:15:33,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115959391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:15:33,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:15:33,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:15:33,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759102010] [2023-12-22 02:15:33,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:15:33,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:15:33,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:15:33,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:15:33,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:33,168 INFO L87 Difference]: Start difference. First operand 1906 states and 3274 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:33,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:15:33,209 INFO L93 Difference]: Finished difference Result 2254 states and 3834 transitions. [2023-12-22 02:15:33,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:15:33,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-22 02:15:33,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:15:33,214 INFO L225 Difference]: With dead ends: 2254 [2023-12-22 02:15:33,214 INFO L226 Difference]: Without dead ends: 2075 [2023-12-22 02:15:33,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:33,215 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1524 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:15:33,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1773 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:15:33,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2023-12-22 02:15:33,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2073. [2023-12-22 02:15:33,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 2071 states have (on average 1.7093191694833414) internal successors, (3540), 2072 states have internal predecessors, (3540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:33,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 3540 transitions. [2023-12-22 02:15:33,245 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 3540 transitions. Word has length 91 [2023-12-22 02:15:33,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:15:33,245 INFO L495 AbstractCegarLoop]: Abstraction has 2073 states and 3540 transitions. [2023-12-22 02:15:33,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:33,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 3540 transitions. [2023-12-22 02:15:33,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:15:33,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:15:33,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:15:33,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-22 02:15:33,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:33,450 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:15:33,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:15:33,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1666551661, now seen corresponding path program 1 times [2023-12-22 02:15:33,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:15:33,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788000784] [2023-12-22 02:15:33,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:15:33,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:33,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:15:33,453 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:15:33,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-22 02:15:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:15:33,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:15:33,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:15:33,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:33,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:15:33,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:15:33,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788000784] [2023-12-22 02:15:33,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788000784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:15:33,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:15:33,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:15:33,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440196640] [2023-12-22 02:15:33,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:15:33,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:15:33,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:15:33,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:15:33,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:33,700 INFO L87 Difference]: Start difference. First operand 2073 states and 3540 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:33,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:15:33,739 INFO L93 Difference]: Finished difference Result 3039 states and 5083 transitions. [2023-12-22 02:15:33,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:15:33,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-22 02:15:33,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:15:33,747 INFO L225 Difference]: With dead ends: 3039 [2023-12-22 02:15:33,747 INFO L226 Difference]: Without dead ends: 2538 [2023-12-22 02:15:33,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:33,750 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 1522 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:15:33,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1779 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:15:33,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2023-12-22 02:15:33,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2536. [2023-12-22 02:15:33,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2536 states, 2534 states have (on average 1.6850828729281768) internal successors, (4270), 2535 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:33,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 4270 transitions. [2023-12-22 02:15:33,787 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 4270 transitions. Word has length 91 [2023-12-22 02:15:33,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:15:33,787 INFO L495 AbstractCegarLoop]: Abstraction has 2536 states and 4270 transitions. [2023-12-22 02:15:33,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:33,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 4270 transitions. [2023-12-22 02:15:33,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:15:33,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:15:33,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:15:33,795 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 [2023-12-22 02:15:34,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:34,009 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:15:34,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:15:34,009 INFO L85 PathProgramCache]: Analyzing trace with hash 2011549037, now seen corresponding path program 1 times [2023-12-22 02:15:34,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:15:34,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468824709] [2023-12-22 02:15:34,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:15:34,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:34,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:15:34,012 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:15:34,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-22 02:15:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:15:34,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:15:34,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:15:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:34,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:15:34,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:15:34,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468824709] [2023-12-22 02:15:34,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468824709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:15:34,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:15:34,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:15:34,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813522493] [2023-12-22 02:15:34,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:15:34,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:15:34,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:15:34,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:15:34,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:34,212 INFO L87 Difference]: Start difference. First operand 2536 states and 4270 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:34,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:15:34,255 INFO L93 Difference]: Finished difference Result 4392 states and 7210 transitions. [2023-12-22 02:15:34,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:15:34,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-22 02:15:34,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:15:34,270 INFO L225 Difference]: With dead ends: 4392 [2023-12-22 02:15:34,270 INFO L226 Difference]: Without dead ends: 3428 [2023-12-22 02:15:34,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:34,274 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1518 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:15:34,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 1775 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:15:34,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3428 states. [2023-12-22 02:15:34,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3428 to 3426. [2023-12-22 02:15:34,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3426 states, 3424 states have (on average 1.6524532710280373) internal successors, (5658), 3425 states have internal predecessors, (5658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 5658 transitions. [2023-12-22 02:15:34,328 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 5658 transitions. Word has length 91 [2023-12-22 02:15:34,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:15:34,328 INFO L495 AbstractCegarLoop]: Abstraction has 3426 states and 5658 transitions. [2023-12-22 02:15:34,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:34,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 5658 transitions. [2023-12-22 02:15:34,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:15:34,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:15:34,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:15:34,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-22 02:15:34,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:34,534 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:15:34,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:15:34,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1742965869, now seen corresponding path program 1 times [2023-12-22 02:15:34,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:15:34,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326584525] [2023-12-22 02:15:34,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:15:34,535 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:34,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:15:34,536 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:15:34,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-22 02:15:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:15:34,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:15:34,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:15:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:34,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:15:34,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:15:34,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326584525] [2023-12-22 02:15:34,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326584525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:15:34,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:15:34,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:15:34,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783896541] [2023-12-22 02:15:34,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:15:34,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:15:34,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:15:34,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:15:34,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:34,826 INFO L87 Difference]: Start difference. First operand 3426 states and 5658 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:34,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:15:34,881 INFO L93 Difference]: Finished difference Result 6990 states and 11248 transitions. [2023-12-22 02:15:34,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:15:34,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-22 02:15:34,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:15:34,895 INFO L225 Difference]: With dead ends: 6990 [2023-12-22 02:15:34,895 INFO L226 Difference]: Without dead ends: 5136 [2023-12-22 02:15:34,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:34,899 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 1516 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:15:34,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1777 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:15:34,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5136 states. [2023-12-22 02:15:34,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5136 to 5134. [2023-12-22 02:15:34,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5134 states, 5132 states have (on average 1.6153546375681995) internal successors, (8290), 5133 states have internal predecessors, (8290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:34,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5134 states to 5134 states and 8290 transitions. [2023-12-22 02:15:34,977 INFO L78 Accepts]: Start accepts. Automaton has 5134 states and 8290 transitions. Word has length 91 [2023-12-22 02:15:34,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:15:34,978 INFO L495 AbstractCegarLoop]: Abstraction has 5134 states and 8290 transitions. [2023-12-22 02:15:34,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:34,978 INFO L276 IsEmpty]: Start isEmpty. Operand 5134 states and 8290 transitions. [2023-12-22 02:15:34,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:15:34,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:15:34,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:15:34,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-22 02:15:35,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:35,182 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:15:35,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:15:35,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1782909805, now seen corresponding path program 1 times [2023-12-22 02:15:35,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:15:35,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020467307] [2023-12-22 02:15:35,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:15:35,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:35,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:15:35,185 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:15:35,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-22 02:15:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:15:35,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:15:35,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:15:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:35,363 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:15:35,363 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:15:35,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020467307] [2023-12-22 02:15:35,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020467307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:15:35,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:15:35,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:15:35,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31100218] [2023-12-22 02:15:35,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:15:35,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:15:35,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:15:35,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:15:35,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:35,366 INFO L87 Difference]: Start difference. First operand 5134 states and 8290 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:35,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:15:35,443 INFO L93 Difference]: Finished difference Result 11970 states and 18892 transitions. [2023-12-22 02:15:35,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:15:35,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-22 02:15:35,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:15:35,478 INFO L225 Difference]: With dead ends: 11970 [2023-12-22 02:15:35,478 INFO L226 Difference]: Without dead ends: 8408 [2023-12-22 02:15:35,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:35,486 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 1514 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:15:35,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1779 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:15:35,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8408 states. [2023-12-22 02:15:35,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8408 to 8406. [2023-12-22 02:15:35,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8406 states, 8404 states have (on average 1.5785340314136125) internal successors, (13266), 8405 states have internal predecessors, (13266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:35,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8406 states to 8406 states and 13266 transitions. [2023-12-22 02:15:35,628 INFO L78 Accepts]: Start accepts. Automaton has 8406 states and 13266 transitions. Word has length 91 [2023-12-22 02:15:35,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:15:35,628 INFO L495 AbstractCegarLoop]: Abstraction has 8406 states and 13266 transitions. [2023-12-22 02:15:35,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:35,629 INFO L276 IsEmpty]: Start isEmpty. Operand 8406 states and 13266 transitions. [2023-12-22 02:15:35,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:15:35,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:15:35,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:15:35,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-22 02:15:35,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:35,834 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:15:35,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:15:35,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1157253741, now seen corresponding path program 1 times [2023-12-22 02:15:35,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:15:35,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908337899] [2023-12-22 02:15:35,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:15:35,835 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:35,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:15:35,836 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:15:35,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-22 02:15:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:15:35,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:15:35,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:15:36,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:36,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:15:36,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:15:36,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908337899] [2023-12-22 02:15:36,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908337899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:15:36,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:15:36,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:15:36,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882405287] [2023-12-22 02:15:36,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:15:36,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:15:36,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:15:36,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:15:36,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:36,045 INFO L87 Difference]: Start difference. First operand 8406 states and 13266 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:36,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:15:36,258 INFO L93 Difference]: Finished difference Result 21498 states and 33316 transitions. [2023-12-22 02:15:36,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:15:36,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-22 02:15:36,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:15:36,284 INFO L225 Difference]: With dead ends: 21498 [2023-12-22 02:15:36,284 INFO L226 Difference]: Without dead ends: 14664 [2023-12-22 02:15:36,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:36,297 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 1512 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:15:36,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1781 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:15:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14664 states. [2023-12-22 02:15:36,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14664 to 14662. [2023-12-22 02:15:36,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14662 states, 14660 states have (on average 1.544474761255116) internal successors, (22642), 14661 states have internal predecessors, (22642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:36,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14662 states to 14662 states and 22642 transitions. [2023-12-22 02:15:36,524 INFO L78 Accepts]: Start accepts. Automaton has 14662 states and 22642 transitions. Word has length 91 [2023-12-22 02:15:36,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:15:36,524 INFO L495 AbstractCegarLoop]: Abstraction has 14662 states and 22642 transitions. [2023-12-22 02:15:36,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:36,524 INFO L276 IsEmpty]: Start isEmpty. Operand 14662 states and 22642 transitions. [2023-12-22 02:15:36,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:15:36,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:15:36,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:15:36,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-22 02:15:36,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:36,729 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:15:36,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:15:36,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2045987181, now seen corresponding path program 1 times [2023-12-22 02:15:36,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:15:36,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105463693] [2023-12-22 02:15:36,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:15:36,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:36,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:15:36,731 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:15:36,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-22 02:15:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:15:36,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:15:36,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:15:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:36,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:15:36,929 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:15:36,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105463693] [2023-12-22 02:15:36,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105463693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:15:36,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:15:36,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:15:36,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251445849] [2023-12-22 02:15:36,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:15:36,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:15:36,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:15:36,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:15:36,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:36,931 INFO L87 Difference]: Start difference. First operand 14662 states and 22642 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:37,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:15:37,178 INFO L93 Difference]: Finished difference Result 39690 states and 60436 transitions. [2023-12-22 02:15:37,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:15:37,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-22 02:15:37,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:15:37,230 INFO L225 Difference]: With dead ends: 39690 [2023-12-22 02:15:37,230 INFO L226 Difference]: Without dead ends: 26600 [2023-12-22 02:15:37,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:37,247 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 1510 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:15:37,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1783 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:15:37,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26600 states. [2023-12-22 02:15:37,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26600 to 26598. [2023-12-22 02:15:37,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26598 states, 26596 states have (on average 1.5130846743871258) internal successors, (40242), 26597 states have internal predecessors, (40242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:37,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26598 states to 26598 states and 40242 transitions. [2023-12-22 02:15:37,733 INFO L78 Accepts]: Start accepts. Automaton has 26598 states and 40242 transitions. Word has length 91 [2023-12-22 02:15:37,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:15:37,733 INFO L495 AbstractCegarLoop]: Abstraction has 26598 states and 40242 transitions. [2023-12-22 02:15:37,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:37,734 INFO L276 IsEmpty]: Start isEmpty. Operand 26598 states and 40242 transitions. [2023-12-22 02:15:37,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:15:37,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:15:37,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:15:37,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-22 02:15:37,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:37,939 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:15:37,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:15:37,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1873031571, now seen corresponding path program 1 times [2023-12-22 02:15:37,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:15:37,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166338496] [2023-12-22 02:15:37,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:15:37,940 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:37,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:15:37,941 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:15:37,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-22 02:15:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:15:38,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:15:38,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:15:38,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:38,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:15:38,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:15:38,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166338496] [2023-12-22 02:15:38,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166338496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:15:38,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:15:38,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:15:38,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645765157] [2023-12-22 02:15:38,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:15:38,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:15:38,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:15:38,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:15:38,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:38,138 INFO L87 Difference]: Start difference. First operand 26598 states and 40242 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:15:38,670 INFO L93 Difference]: Finished difference Result 74346 states and 111220 transitions. [2023-12-22 02:15:38,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:15:38,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-22 02:15:38,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:15:38,740 INFO L225 Difference]: With dead ends: 74346 [2023-12-22 02:15:38,740 INFO L226 Difference]: Without dead ends: 49320 [2023-12-22 02:15:38,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:38,757 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1520 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:15:38,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1781 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:15:38,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49320 states. [2023-12-22 02:15:39,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49320 to 49318. [2023-12-22 02:15:39,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49318 states, 49316 states have (on average 1.4830480979803715) internal successors, (73138), 49317 states have internal predecessors, (73138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49318 states to 49318 states and 73138 transitions. [2023-12-22 02:15:39,706 INFO L78 Accepts]: Start accepts. Automaton has 49318 states and 73138 transitions. Word has length 91 [2023-12-22 02:15:39,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:15:39,707 INFO L495 AbstractCegarLoop]: Abstraction has 49318 states and 73138 transitions. [2023-12-22 02:15:39,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:39,707 INFO L276 IsEmpty]: Start isEmpty. Operand 49318 states and 73138 transitions. [2023-12-22 02:15:39,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-22 02:15:39,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:15:39,713 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:15:39,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-22 02:15:39,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:39,917 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:15:39,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:15:39,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1900714775, now seen corresponding path program 1 times [2023-12-22 02:15:39,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:15:39,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846017278] [2023-12-22 02:15:39,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:15:39,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:39,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:15:39,919 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) [2023-12-22 02:15:39,920 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 [2023-12-22 02:15:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:15:40,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:15:40,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:15:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:41,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:15:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:41,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:15:41,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846017278] [2023-12-22 02:15:41,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846017278] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:15:41,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:15:41,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:15:41,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46253790] [2023-12-22 02:15:41,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:15:41,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:15:41,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:15:41,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:15:41,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:15:41,547 INFO L87 Difference]: Start difference. First operand 49318 states and 73138 transitions. Second operand has 16 states, 16 states have (on average 13.125) internal successors, (210), 16 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:45,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:15:45,761 INFO L93 Difference]: Finished difference Result 153904 states and 226103 transitions. [2023-12-22 02:15:45,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 02:15:45,761 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.125) internal successors, (210), 16 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-22 02:15:45,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:15:45,973 INFO L225 Difference]: With dead ends: 153904 [2023-12-22 02:15:45,973 INFO L226 Difference]: Without dead ends: 120878 [2023-12-22 02:15:46,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-22 02:15:46,013 INFO L413 NwaCegarLoop]: 1615 mSDtfsCounter, 2364 mSDsluCounter, 12932 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2364 SdHoareTripleChecker+Valid, 14547 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-22 02:15:46,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2364 Valid, 14547 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-22 02:15:46,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120878 states. [2023-12-22 02:15:48,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120878 to 97062. [2023-12-22 02:15:48,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97062 states, 97060 states have (on average 1.4749021223985164) internal successors, (143154), 97061 states have internal predecessors, (143154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:48,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97062 states to 97062 states and 143154 transitions. [2023-12-22 02:15:48,538 INFO L78 Accepts]: Start accepts. Automaton has 97062 states and 143154 transitions. Word has length 115 [2023-12-22 02:15:48,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:15:48,538 INFO L495 AbstractCegarLoop]: Abstraction has 97062 states and 143154 transitions. [2023-12-22 02:15:48,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.125) internal successors, (210), 16 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:48,539 INFO L276 IsEmpty]: Start isEmpty. Operand 97062 states and 143154 transitions. [2023-12-22 02:15:48,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-22 02:15:48,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:15:48,544 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:15:48,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-22 02:15:48,748 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 [2023-12-22 02:15:48,748 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:15:48,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:15:48,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1975327255, now seen corresponding path program 1 times [2023-12-22 02:15:48,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:15:48,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566209572] [2023-12-22 02:15:48,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:15:48,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:48,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:15:48,750 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) [2023-12-22 02:15:48,752 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 [2023-12-22 02:15:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:15:48,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:15:48,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:15:48,974 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:48,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:15:48,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:15:48,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566209572] [2023-12-22 02:15:48,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566209572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:15:48,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:15:48,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:15:48,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105575607] [2023-12-22 02:15:48,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:15:48,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:15:48,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:15:48,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:15:48,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:48,976 INFO L87 Difference]: Start difference. First operand 97062 states and 143154 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:50,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:15:50,337 INFO L93 Difference]: Finished difference Result 163138 states and 241101 transitions. [2023-12-22 02:15:50,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:15:50,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-22 02:15:50,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:15:50,430 INFO L225 Difference]: With dead ends: 163138 [2023-12-22 02:15:50,431 INFO L226 Difference]: Without dead ends: 67648 [2023-12-22 02:15:50,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:50,474 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 71 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 3247 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:15:50,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 3247 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:15:50,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67648 states. [2023-12-22 02:15:51,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67648 to 67641. [2023-12-22 02:15:51,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67641 states, 67639 states have (on average 1.4770916187406673) internal successors, (99909), 67640 states have internal predecessors, (99909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:52,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67641 states to 67641 states and 99909 transitions. [2023-12-22 02:15:52,045 INFO L78 Accepts]: Start accepts. Automaton has 67641 states and 99909 transitions. Word has length 115 [2023-12-22 02:15:52,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:15:52,045 INFO L495 AbstractCegarLoop]: Abstraction has 67641 states and 99909 transitions. [2023-12-22 02:15:52,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:52,046 INFO L276 IsEmpty]: Start isEmpty. Operand 67641 states and 99909 transitions. [2023-12-22 02:15:52,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-22 02:15:52,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:15:52,049 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:15:52,054 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 [2023-12-22 02:15:52,252 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 [2023-12-22 02:15:52,253 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:15:52,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:15:52,253 INFO L85 PathProgramCache]: Analyzing trace with hash 504746683, now seen corresponding path program 1 times [2023-12-22 02:15:52,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:15:52,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985955048] [2023-12-22 02:15:52,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:15:52,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:52,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:15:52,255 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) [2023-12-22 02:15:52,257 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 [2023-12-22 02:15:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:15:52,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:15:52,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:15:52,441 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:52,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:15:52,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:15:52,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985955048] [2023-12-22 02:15:52,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985955048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:15:52,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:15:52,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:15:52,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855273916] [2023-12-22 02:15:52,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:15:52,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:15:52,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:15:52,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:15:52,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:52,455 INFO L87 Difference]: Start difference. First operand 67641 states and 99909 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:53,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:15:53,241 INFO L93 Difference]: Finished difference Result 100669 states and 148487 transitions. [2023-12-22 02:15:53,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:15:53,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2023-12-22 02:15:53,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:15:53,288 INFO L225 Difference]: With dead ends: 100669 [2023-12-22 02:15:53,289 INFO L226 Difference]: Without dead ends: 34619 [2023-12-22 02:15:53,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:53,322 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 67 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:15:53,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 3232 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:15:53,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34619 states. [2023-12-22 02:15:54,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34619 to 34617. [2023-12-22 02:15:54,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34617 states, 34615 states have (on average 1.471876354181713) internal successors, (50949), 34616 states have internal predecessors, (50949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:54,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34617 states to 34617 states and 50949 transitions. [2023-12-22 02:15:54,116 INFO L78 Accepts]: Start accepts. Automaton has 34617 states and 50949 transitions. Word has length 117 [2023-12-22 02:15:54,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:15:54,116 INFO L495 AbstractCegarLoop]: Abstraction has 34617 states and 50949 transitions. [2023-12-22 02:15:54,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:54,116 INFO L276 IsEmpty]: Start isEmpty. Operand 34617 states and 50949 transitions. [2023-12-22 02:15:54,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-22 02:15:54,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:15:54,119 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:15:54,125 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 [2023-12-22 02:15:54,324 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 [2023-12-22 02:15:54,325 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:15:54,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:15:54,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1354260275, now seen corresponding path program 1 times [2023-12-22 02:15:54,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:15:54,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289502733] [2023-12-22 02:15:54,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:15:54,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:54,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:15:54,327 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) [2023-12-22 02:15:54,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-22 02:15:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:15:54,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:15:54,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:15:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:55,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:15:56,234 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:56,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:15:56,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289502733] [2023-12-22 02:15:56,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289502733] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:15:56,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:15:56,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:15:56,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724423396] [2023-12-22 02:15:56,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:15:56,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:15:56,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:15:56,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:15:56,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:15:56,236 INFO L87 Difference]: Start difference. First operand 34617 states and 50949 transitions. Second operand has 16 states, 16 states have (on average 13.625) internal successors, (218), 16 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:57,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:15:57,777 INFO L93 Difference]: Finished difference Result 68427 states and 99930 transitions. [2023-12-22 02:15:57,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-22 02:15:57,777 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.625) internal successors, (218), 16 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-12-22 02:15:57,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:15:57,817 INFO L225 Difference]: With dead ends: 68427 [2023-12-22 02:15:57,817 INFO L226 Difference]: Without dead ends: 35401 [2023-12-22 02:15:57,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2023-12-22 02:15:57,830 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 3225 mSDsluCounter, 12324 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3225 SdHoareTripleChecker+Valid, 13858 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 02:15:57,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3225 Valid, 13858 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 02:15:57,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35401 states. [2023-12-22 02:15:58,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35401 to 34631. [2023-12-22 02:15:58,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34631 states, 34629 states have (on average 1.4717433365098618) internal successors, (50965), 34630 states have internal predecessors, (50965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:58,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34631 states to 34631 states and 50965 transitions. [2023-12-22 02:15:58,496 INFO L78 Accepts]: Start accepts. Automaton has 34631 states and 50965 transitions. Word has length 118 [2023-12-22 02:15:58,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:15:58,496 INFO L495 AbstractCegarLoop]: Abstraction has 34631 states and 50965 transitions. [2023-12-22 02:15:58,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.625) internal successors, (218), 16 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:58,496 INFO L276 IsEmpty]: Start isEmpty. Operand 34631 states and 50965 transitions. [2023-12-22 02:15:58,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-22 02:15:58,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:15:58,499 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:15:58,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-12-22 02:15:58,703 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 [2023-12-22 02:15:58,703 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:15:58,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:15:58,703 INFO L85 PathProgramCache]: Analyzing trace with hash 429681213, now seen corresponding path program 1 times [2023-12-22 02:15:58,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:15:58,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980572858] [2023-12-22 02:15:58,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:15:58,704 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:58,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:15:58,705 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) [2023-12-22 02:15:58,738 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 [2023-12-22 02:15:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:15:58,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:15:58,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:15:58,888 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:58,889 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:15:58,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:15:58,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980572858] [2023-12-22 02:15:58,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980572858] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:15:58,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:15:58,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:15:58,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584193879] [2023-12-22 02:15:58,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:15:58,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:15:58,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:15:58,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:15:58,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:58,890 INFO L87 Difference]: Start difference. First operand 34631 states and 50965 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:59,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:15:59,266 INFO L93 Difference]: Finished difference Result 51147 states and 75063 transitions. [2023-12-22 02:15:59,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:15:59,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-12-22 02:15:59,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:15:59,289 INFO L225 Difference]: With dead ends: 51147 [2023-12-22 02:15:59,289 INFO L226 Difference]: Without dead ends: 18121 [2023-12-22 02:15:59,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:15:59,311 INFO L413 NwaCegarLoop]: 1647 mSDtfsCounter, 63 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 3217 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:15:59,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 3217 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:15:59,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18121 states. [2023-12-22 02:15:59,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18121 to 18119. [2023-12-22 02:15:59,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18119 states, 18117 states have (on average 1.4724844069106364) internal successors, (26677), 18118 states have internal predecessors, (26677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:59,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18119 states to 18119 states and 26677 transitions. [2023-12-22 02:15:59,694 INFO L78 Accepts]: Start accepts. Automaton has 18119 states and 26677 transitions. Word has length 120 [2023-12-22 02:15:59,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:15:59,694 INFO L495 AbstractCegarLoop]: Abstraction has 18119 states and 26677 transitions. [2023-12-22 02:15:59,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:59,695 INFO L276 IsEmpty]: Start isEmpty. Operand 18119 states and 26677 transitions. [2023-12-22 02:15:59,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-22 02:15:59,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:15:59,696 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:15:59,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-22 02:15:59,899 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 [2023-12-22 02:15:59,900 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:15:59,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:15:59,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1369061515, now seen corresponding path program 1 times [2023-12-22 02:15:59,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:15:59,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534091848] [2023-12-22 02:15:59,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:15:59,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:15:59,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:15:59,902 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) [2023-12-22 02:15:59,903 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 [2023-12-22 02:16:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:16:00,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:16:00,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:16:01,061 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:16:01,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:16:01,413 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:16:01,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:16:01,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534091848] [2023-12-22 02:16:01,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534091848] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:16:01,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:16:01,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:16:01,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510538499] [2023-12-22 02:16:01,413 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:16:01,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:16:01,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:16:01,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:16:01,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:16:01,415 INFO L87 Difference]: Start difference. First operand 18119 states and 26677 transitions. Second operand has 16 states, 16 states have (on average 14.125) internal successors, (226), 16 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:16:03,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:16:03,552 INFO L93 Difference]: Finished difference Result 64399 states and 93113 transitions. [2023-12-22 02:16:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 02:16:03,553 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.125) internal successors, (226), 16 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2023-12-22 02:16:03,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:16:03,609 INFO L225 Difference]: With dead ends: 64399 [2023-12-22 02:16:03,609 INFO L226 Difference]: Without dead ends: 47885 [2023-12-22 02:16:03,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 02:16:03,628 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 5323 mSDsluCounter, 11187 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5323 SdHoareTripleChecker+Valid, 12856 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:16:03,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5323 Valid, 12856 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 02:16:03,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47885 states. [2023-12-22 02:16:04,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47885 to 35783. [2023-12-22 02:16:04,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35783 states, 35781 states have (on average 1.440457225902015) internal successors, (51541), 35782 states have internal predecessors, (51541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:16:04,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35783 states to 35783 states and 51541 transitions. [2023-12-22 02:16:04,576 INFO L78 Accepts]: Start accepts. Automaton has 35783 states and 51541 transitions. Word has length 121 [2023-12-22 02:16:04,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:16:04,577 INFO L495 AbstractCegarLoop]: Abstraction has 35783 states and 51541 transitions. [2023-12-22 02:16:04,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.125) internal successors, (226), 16 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:16:04,577 INFO L276 IsEmpty]: Start isEmpty. Operand 35783 states and 51541 transitions. [2023-12-22 02:16:04,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-22 02:16:04,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:16:04,579 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:16:04,583 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 (21)] Ended with exit code 0 [2023-12-22 02:16:04,782 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 [2023-12-22 02:16:04,783 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:16:04,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:16:04,783 INFO L85 PathProgramCache]: Analyzing trace with hash 2140509383, now seen corresponding path program 1 times [2023-12-22 02:16:04,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:16:04,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088674302] [2023-12-22 02:16:04,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:16:04,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:16:04,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:16:04,785 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) [2023-12-22 02:16:04,787 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 [2023-12-22 02:16:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:16:04,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:16:04,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:16:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:16:04,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:16:04,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:16:04,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088674302] [2023-12-22 02:16:04,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088674302] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:16:04,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:16:04,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:16:04,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275569518] [2023-12-22 02:16:04,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:16:04,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:16:04,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:16:04,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:16:04,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:16:04,980 INFO L87 Difference]: Start difference. First operand 35783 states and 51541 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:16:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:16:05,286 INFO L93 Difference]: Finished difference Result 52875 states and 75927 transitions. [2023-12-22 02:16:05,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:16:05,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2023-12-22 02:16:05,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:16:05,309 INFO L225 Difference]: With dead ends: 52875 [2023-12-22 02:16:05,309 INFO L226 Difference]: Without dead ends: 18697 [2023-12-22 02:16:05,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:16:05,330 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 59 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:16:05,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 3202 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:16:05,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18697 states. [2023-12-22 02:16:05,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18697 to 18695. [2023-12-22 02:16:05,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18695 states, 18693 states have (on average 1.4425185898464665) internal successors, (26965), 18694 states have internal predecessors, (26965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:16:05,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18695 states to 18695 states and 26965 transitions. [2023-12-22 02:16:05,834 INFO L78 Accepts]: Start accepts. Automaton has 18695 states and 26965 transitions. Word has length 123 [2023-12-22 02:16:05,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:16:05,834 INFO L495 AbstractCegarLoop]: Abstraction has 18695 states and 26965 transitions. [2023-12-22 02:16:05,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:16:05,834 INFO L276 IsEmpty]: Start isEmpty. Operand 18695 states and 26965 transitions. [2023-12-22 02:16:05,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-22 02:16:05,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:16:05,836 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:16:05,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-22 02:16:06,043 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 [2023-12-22 02:16:06,043 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:16:06,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:16:06,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1840226751, now seen corresponding path program 1 times [2023-12-22 02:16:06,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:16:06,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110955564] [2023-12-22 02:16:06,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:16:06,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:16:06,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:16:06,046 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) [2023-12-22 02:16:06,047 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 [2023-12-22 02:16:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:16:06,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:16:06,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:16:07,296 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:16:07,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:16:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:16:07,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:16:07,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110955564] [2023-12-22 02:16:07,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110955564] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:16:07,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:16:07,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:16:07,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771131858] [2023-12-22 02:16:07,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:16:07,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:16:07,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:16:07,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:16:07,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:16:07,806 INFO L87 Difference]: Start difference. First operand 18695 states and 26965 transitions. Second operand has 16 states, 16 states have (on average 14.625) internal successors, (234), 16 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:16:10,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:16:10,496 INFO L93 Difference]: Finished difference Result 64975 states and 92057 transitions. [2023-12-22 02:16:10,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 02:16:10,497 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.625) internal successors, (234), 16 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2023-12-22 02:16:10,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:16:10,551 INFO L225 Difference]: With dead ends: 64975 [2023-12-22 02:16:10,551 INFO L226 Difference]: Without dead ends: 47885 [2023-12-22 02:16:10,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 02:16:10,560 INFO L413 NwaCegarLoop]: 1651 mSDtfsCounter, 3897 mSDsluCounter, 9702 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3897 SdHoareTripleChecker+Valid, 11353 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:16:10,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3897 Valid, 11353 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-22 02:16:10,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47885 states. [2023-12-22 02:16:11,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47885 to 36935. [2023-12-22 02:16:11,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36935 states, 36933 states have (on average 1.4111228440689898) internal successors, (52117), 36934 states have internal predecessors, (52117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:16:11,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36935 states to 36935 states and 52117 transitions. [2023-12-22 02:16:11,510 INFO L78 Accepts]: Start accepts. Automaton has 36935 states and 52117 transitions. Word has length 124 [2023-12-22 02:16:11,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:16:11,510 INFO L495 AbstractCegarLoop]: Abstraction has 36935 states and 52117 transitions. [2023-12-22 02:16:11,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.625) internal successors, (234), 16 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:16:11,510 INFO L276 IsEmpty]: Start isEmpty. Operand 36935 states and 52117 transitions. [2023-12-22 02:16:11,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-22 02:16:11,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:16:11,512 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:16:11,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-22 02:16:11,716 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 [2023-12-22 02:16:11,717 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:16:11,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:16:11,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1882810581, now seen corresponding path program 1 times [2023-12-22 02:16:11,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:16:11,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435162590] [2023-12-22 02:16:11,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:16:11,718 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:16:11,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:16:11,719 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) [2023-12-22 02:16:11,720 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 [2023-12-22 02:16:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:16:11,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:16:11,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:16:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:16:11,971 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:16:11,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:16:11,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435162590] [2023-12-22 02:16:11,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435162590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:16:11,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:16:11,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:16:11,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551813892] [2023-12-22 02:16:11,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:16:11,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:16:11,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:16:11,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:16:11,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:16:11,972 INFO L87 Difference]: Start difference. First operand 36935 states and 52117 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:16:52,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:16:52,497 INFO L93 Difference]: Finished difference Result 39941 states and 57452 transitions. [2023-12-22 02:16:52,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:16:52,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2023-12-22 02:16:52,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:16:52,564 INFO L225 Difference]: With dead ends: 39941 [2023-12-22 02:16:52,564 INFO L226 Difference]: Without dead ends: 38437 [2023-12-22 02:16:52,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:16:52,575 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 894 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 2934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.7s IncrementalHoareTripleChecker+Time [2023-12-22 02:16:52,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 670 Invalid, 2934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2343 Invalid, 0 Unknown, 0 Unchecked, 39.7s Time] [2023-12-22 02:16:52,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38437 states. [2023-12-22 02:16:53,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38437 to 38437. [2023-12-22 02:16:53,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38437 states, 38435 states have (on average 1.407232990763627) internal successors, (54087), 38436 states have internal predecessors, (54087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:16:53,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38437 states to 38437 states and 54087 transitions. [2023-12-22 02:16:53,379 INFO L78 Accepts]: Start accepts. Automaton has 38437 states and 54087 transitions. Word has length 125 [2023-12-22 02:16:53,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:16:53,383 INFO L495 AbstractCegarLoop]: Abstraction has 38437 states and 54087 transitions. [2023-12-22 02:16:53,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:16:53,384 INFO L276 IsEmpty]: Start isEmpty. Operand 38437 states and 54087 transitions. [2023-12-22 02:16:53,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-22 02:16:53,386 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:16:53,386 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:16:53,393 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 [2023-12-22 02:16:53,590 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 [2023-12-22 02:16:53,591 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:16:53,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:16:53,591 INFO L85 PathProgramCache]: Analyzing trace with hash -209923511, now seen corresponding path program 1 times [2023-12-22 02:16:53,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:16:53,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919936101] [2023-12-22 02:16:53,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:16:53,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:16:53,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:16:53,593 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) [2023-12-22 02:16:53,608 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 [2023-12-22 02:16:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:16:53,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:16:53,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:16:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:16:53,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:16:53,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:16:53,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919936101] [2023-12-22 02:16:53,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919936101] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:16:53,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:16:53,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:16:53,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468864384] [2023-12-22 02:16:53,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:16:53,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:16:53,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:16:53,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:16:53,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:16:53,827 INFO L87 Difference]: Start difference. First operand 38437 states and 54087 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:16:54,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:16:54,291 INFO L93 Difference]: Finished difference Result 56105 states and 78761 transitions. [2023-12-22 02:16:54,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:16:54,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-12-22 02:16:54,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:16:54,314 INFO L225 Difference]: With dead ends: 56105 [2023-12-22 02:16:54,314 INFO L226 Difference]: Without dead ends: 20775 [2023-12-22 02:16:54,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:16:54,336 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 55 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:16:54,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3187 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:16:54,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20775 states. [2023-12-22 02:16:54,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20775 to 20773. [2023-12-22 02:16:54,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20773 states, 20771 states have (on average 1.4069134851475615) internal successors, (29223), 20772 states have internal predecessors, (29223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:16:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20773 states to 20773 states and 29223 transitions. [2023-12-22 02:16:54,734 INFO L78 Accepts]: Start accepts. Automaton has 20773 states and 29223 transitions. Word has length 126 [2023-12-22 02:16:54,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:16:54,734 INFO L495 AbstractCegarLoop]: Abstraction has 20773 states and 29223 transitions. [2023-12-22 02:16:54,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:16:54,734 INFO L276 IsEmpty]: Start isEmpty. Operand 20773 states and 29223 transitions. [2023-12-22 02:16:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-22 02:16:54,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:16:54,736 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:16:54,740 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 [2023-12-22 02:16:54,938 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 [2023-12-22 02:16:54,939 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:16:54,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:16:54,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1957785601, now seen corresponding path program 1 times [2023-12-22 02:16:54,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:16:54,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478480410] [2023-12-22 02:16:54,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:16:54,940 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:16:54,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:16:54,941 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) [2023-12-22 02:16:54,943 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 [2023-12-22 02:16:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:16:55,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:16:55,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:16:55,979 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:16:55,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:16:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:16:56,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:16:56,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478480410] [2023-12-22 02:16:56,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478480410] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:16:56,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:16:56,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:16:56,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349062324] [2023-12-22 02:16:56,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:16:56,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:16:56,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:16:56,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:16:56,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:16:56,426 INFO L87 Difference]: Start difference. First operand 20773 states and 29223 transitions. Second operand has 16 states, 16 states have (on average 15.125) internal successors, (242), 16 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:16:59,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:16:59,195 INFO L93 Difference]: Finished difference Result 67053 states and 92971 transitions. [2023-12-22 02:16:59,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 02:16:59,195 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.125) internal successors, (242), 16 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2023-12-22 02:16:59,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:16:59,263 INFO L225 Difference]: With dead ends: 67053 [2023-12-22 02:16:59,264 INFO L226 Difference]: Without dead ends: 49387 [2023-12-22 02:16:59,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 02:16:59,289 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 6828 mSDsluCounter, 12786 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6828 SdHoareTripleChecker+Valid, 14419 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:16:59,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6828 Valid, 14419 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-22 02:16:59,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49387 states. [2023-12-22 02:17:00,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49387 to 39589. [2023-12-22 02:17:00,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39589 states, 39587 states have (on average 1.3808320913431178) internal successors, (54663), 39588 states have internal predecessors, (54663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39589 states to 39589 states and 54663 transitions. [2023-12-22 02:17:00,687 INFO L78 Accepts]: Start accepts. Automaton has 39589 states and 54663 transitions. Word has length 127 [2023-12-22 02:17:00,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:17:00,687 INFO L495 AbstractCegarLoop]: Abstraction has 39589 states and 54663 transitions. [2023-12-22 02:17:00,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.125) internal successors, (242), 16 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:00,687 INFO L276 IsEmpty]: Start isEmpty. Operand 39589 states and 54663 transitions. [2023-12-22 02:17:00,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-22 02:17:00,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:17:00,689 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:17:00,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-12-22 02:17:00,893 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 [2023-12-22 02:17:00,893 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:17:00,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:17:00,894 INFO L85 PathProgramCache]: Analyzing trace with hash -180609837, now seen corresponding path program 1 times [2023-12-22 02:17:00,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:17:00,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962460141] [2023-12-22 02:17:00,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:17:00,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:17:00,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:17:00,895 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) [2023-12-22 02:17:00,909 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 [2023-12-22 02:17:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:17:01,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:17:01,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:17:01,091 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:17:01,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:17:01,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:17:01,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962460141] [2023-12-22 02:17:01,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962460141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:17:01,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:17:01,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:17:01,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527352424] [2023-12-22 02:17:01,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:17:01,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:17:01,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:17:01,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:17:01,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:17:01,092 INFO L87 Difference]: Start difference. First operand 39589 states and 54663 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:01,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:17:01,785 INFO L93 Difference]: Finished difference Result 57833 states and 79625 transitions. [2023-12-22 02:17:01,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:17:01,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2023-12-22 02:17:01,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:17:01,814 INFO L225 Difference]: With dead ends: 57833 [2023-12-22 02:17:01,815 INFO L226 Difference]: Without dead ends: 21351 [2023-12-22 02:17:01,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:17:01,836 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 51 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:17:01,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 3172 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:17:01,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21351 states. [2023-12-22 02:17:02,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21351 to 21349. [2023-12-22 02:17:02,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21349 states, 21347 states have (on average 1.382442497774863) internal successors, (29511), 21348 states have internal predecessors, (29511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21349 states to 21349 states and 29511 transitions. [2023-12-22 02:17:02,305 INFO L78 Accepts]: Start accepts. Automaton has 21349 states and 29511 transitions. Word has length 129 [2023-12-22 02:17:02,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:17:02,307 INFO L495 AbstractCegarLoop]: Abstraction has 21349 states and 29511 transitions. [2023-12-22 02:17:02,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:02,307 INFO L276 IsEmpty]: Start isEmpty. Operand 21349 states and 29511 transitions. [2023-12-22 02:17:02,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-22 02:17:02,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:17:02,309 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:17:02,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-22 02:17:02,513 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 [2023-12-22 02:17:02,513 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:17:02,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:17:02,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1009117771, now seen corresponding path program 1 times [2023-12-22 02:17:02,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:17:02,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829487039] [2023-12-22 02:17:02,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:17:02,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:17:02,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:17:02,515 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) [2023-12-22 02:17:02,516 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 [2023-12-22 02:17:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:17:02,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:17:02,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:17:03,775 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:17:03,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:17:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:17:04,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:17:04,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829487039] [2023-12-22 02:17:04,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829487039] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:17:04,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:17:04,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:17:04,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213152453] [2023-12-22 02:17:04,177 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:17:04,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:17:04,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:17:04,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:17:04,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:17:04,178 INFO L87 Difference]: Start difference. First operand 21349 states and 29511 transitions. Second operand has 16 states, 16 states have (on average 15.625) internal successors, (250), 16 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:07,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:17:07,142 INFO L93 Difference]: Finished difference Result 67629 states and 91915 transitions. [2023-12-22 02:17:07,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 02:17:07,143 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.625) internal successors, (250), 16 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-22 02:17:07,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:17:07,204 INFO L225 Difference]: With dead ends: 67629 [2023-12-22 02:17:07,204 INFO L226 Difference]: Without dead ends: 49387 [2023-12-22 02:17:07,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 02:17:07,214 INFO L413 NwaCegarLoop]: 1615 mSDtfsCounter, 3725 mSDsluCounter, 12713 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3725 SdHoareTripleChecker+Valid, 14328 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:17:07,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3725 Valid, 14328 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-22 02:17:07,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49387 states. [2023-12-22 02:17:08,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49387 to 40741. [2023-12-22 02:17:08,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40741 states, 40739 states have (on average 1.3559242985836668) internal successors, (55239), 40740 states have internal predecessors, (55239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:08,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40741 states to 40741 states and 55239 transitions. [2023-12-22 02:17:08,289 INFO L78 Accepts]: Start accepts. Automaton has 40741 states and 55239 transitions. Word has length 130 [2023-12-22 02:17:08,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:17:08,289 INFO L495 AbstractCegarLoop]: Abstraction has 40741 states and 55239 transitions. [2023-12-22 02:17:08,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.625) internal successors, (250), 16 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:08,289 INFO L276 IsEmpty]: Start isEmpty. Operand 40741 states and 55239 transitions. [2023-12-22 02:17:08,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-22 02:17:08,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:17:08,292 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:17:08,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-22 02:17:08,496 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 [2023-12-22 02:17:08,496 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:17:08,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:17:08,497 INFO L85 PathProgramCache]: Analyzing trace with hash -57850042, now seen corresponding path program 1 times [2023-12-22 02:17:08,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:17:08,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256936571] [2023-12-22 02:17:08,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:17:08,497 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:17:08,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:17:08,498 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) [2023-12-22 02:17:08,502 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 [2023-12-22 02:17:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:17:08,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:17:08,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:17:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:17:09,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:17:09,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:17:09,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256936571] [2023-12-22 02:17:09,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256936571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:17:09,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:17:09,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:17:09,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645862599] [2023-12-22 02:17:09,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:17:09,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:17:09,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:17:09,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:17:09,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:17:09,228 INFO L87 Difference]: Start difference. First operand 40741 states and 55239 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:43,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:17:43,020 INFO L93 Difference]: Finished difference Result 44534 states and 60856 transitions. [2023-12-22 02:17:43,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:17:43,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2023-12-22 02:17:43,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:17:43,074 INFO L225 Difference]: With dead ends: 44534 [2023-12-22 02:17:43,074 INFO L226 Difference]: Without dead ends: 41492 [2023-12-22 02:17:43,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:17:43,081 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 846 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 3683 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 3837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 3683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.8s IncrementalHoareTripleChecker+Time [2023-12-22 02:17:43,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 990 Invalid, 3837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 3683 Invalid, 0 Unknown, 0 Unchecked, 32.8s Time] [2023-12-22 02:17:43,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41492 states. [2023-12-22 02:17:44,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41492 to 41492. [2023-12-22 02:17:44,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41492 states, 41490 states have (on average 1.3503735839961437) internal successors, (56027), 41491 states have internal predecessors, (56027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:44,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41492 states to 41492 states and 56027 transitions. [2023-12-22 02:17:44,083 INFO L78 Accepts]: Start accepts. Automaton has 41492 states and 56027 transitions. Word has length 131 [2023-12-22 02:17:44,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:17:44,084 INFO L495 AbstractCegarLoop]: Abstraction has 41492 states and 56027 transitions. [2023-12-22 02:17:44,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:44,084 INFO L276 IsEmpty]: Start isEmpty. Operand 41492 states and 56027 transitions. [2023-12-22 02:17:44,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-22 02:17:44,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:17:44,086 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:17:44,089 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 (29)] Ended with exit code 0 [2023-12-22 02:17:44,289 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 [2023-12-22 02:17:44,289 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:17:44,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:17:44,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2126299051, now seen corresponding path program 1 times [2023-12-22 02:17:44,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:17:44,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170058599] [2023-12-22 02:17:44,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:17:44,290 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:17:44,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:17:44,291 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) [2023-12-22 02:17:44,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-22 02:17:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:17:44,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:17:44,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:17:44,505 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:17:44,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:17:44,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:17:44,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170058599] [2023-12-22 02:17:44,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170058599] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:17:44,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:17:44,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:17:44,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112512904] [2023-12-22 02:17:44,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:17:44,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:17:44,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:17:44,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:17:44,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:17:44,507 INFO L87 Difference]: Start difference. First operand 41492 states and 56027 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:45,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:17:45,052 INFO L93 Difference]: Finished difference Result 60312 states and 81277 transitions. [2023-12-22 02:17:45,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:17:45,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2023-12-22 02:17:45,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:17:45,076 INFO L225 Difference]: With dead ends: 60312 [2023-12-22 02:17:45,077 INFO L226 Difference]: Without dead ends: 22678 [2023-12-22 02:17:45,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:17:45,097 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 47 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:17:45,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3157 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:17:45,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22678 states. [2023-12-22 02:17:45,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22678 to 22676. [2023-12-22 02:17:45,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22676 states, 22674 states have (on average 1.3489900326364999) internal successors, (30587), 22675 states have internal predecessors, (30587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:45,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22676 states to 22676 states and 30587 transitions. [2023-12-22 02:17:45,603 INFO L78 Accepts]: Start accepts. Automaton has 22676 states and 30587 transitions. Word has length 132 [2023-12-22 02:17:45,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:17:45,604 INFO L495 AbstractCegarLoop]: Abstraction has 22676 states and 30587 transitions. [2023-12-22 02:17:45,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:45,604 INFO L276 IsEmpty]: Start isEmpty. Operand 22676 states and 30587 transitions. [2023-12-22 02:17:45,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-22 02:17:45,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:17:45,605 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:17:45,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-22 02:17:45,808 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 [2023-12-22 02:17:45,808 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:17:45,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:17:45,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1821597325, now seen corresponding path program 1 times [2023-12-22 02:17:45,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:17:45,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106427061] [2023-12-22 02:17:45,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:17:45,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:17:45,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:17:45,811 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) [2023-12-22 02:17:45,812 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 [2023-12-22 02:17:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:17:45,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:17:45,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:17:46,926 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:17:46,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:17:47,316 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:17:47,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:17:47,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106427061] [2023-12-22 02:17:47,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106427061] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:17:47,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:17:47,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:17:47,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966956538] [2023-12-22 02:17:47,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:17:47,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:17:47,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:17:47,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:17:47,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:17:47,318 INFO L87 Difference]: Start difference. First operand 22676 states and 30587 transitions. Second operand has 16 states, 16 states have (on average 16.125) internal successors, (258), 16 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:49,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:17:49,513 INFO L93 Difference]: Finished difference Result 68956 states and 91647 transitions. [2023-12-22 02:17:49,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 02:17:49,513 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.125) internal successors, (258), 16 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-12-22 02:17:49,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:17:49,572 INFO L225 Difference]: With dead ends: 68956 [2023-12-22 02:17:49,572 INFO L226 Difference]: Without dead ends: 50138 [2023-12-22 02:17:49,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 02:17:49,592 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 2027 mSDsluCounter, 11032 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2027 SdHoareTripleChecker+Valid, 12629 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 02:17:49,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2027 Valid, 12629 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 02:17:49,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50138 states. [2023-12-22 02:17:50,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50138 to 42644. [2023-12-22 02:17:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42644 states, 42642 states have (on average 1.3274002157497302) internal successors, (56603), 42643 states have internal predecessors, (56603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42644 states to 42644 states and 56603 transitions. [2023-12-22 02:17:50,900 INFO L78 Accepts]: Start accepts. Automaton has 42644 states and 56603 transitions. Word has length 133 [2023-12-22 02:17:50,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:17:50,900 INFO L495 AbstractCegarLoop]: Abstraction has 42644 states and 56603 transitions. [2023-12-22 02:17:50,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.125) internal successors, (258), 16 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:50,900 INFO L276 IsEmpty]: Start isEmpty. Operand 42644 states and 56603 transitions. [2023-12-22 02:17:50,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-22 02:17:50,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:17:50,903 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:17:50,907 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 [2023-12-22 02:17:51,105 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 [2023-12-22 02:17:51,105 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:17:51,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:17:51,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1492413151, now seen corresponding path program 1 times [2023-12-22 02:17:51,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:17:51,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6013276] [2023-12-22 02:17:51,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:17:51,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:17:51,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:17:51,107 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) [2023-12-22 02:17:51,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-22 02:17:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:17:51,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:17:51,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:17:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:17:51,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:17:51,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:17:51,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6013276] [2023-12-22 02:17:51,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6013276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:17:51,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:17:51,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:17:51,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853569564] [2023-12-22 02:17:51,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:17:51,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:17:51,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:17:51,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:17:51,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:17:51,320 INFO L87 Difference]: Start difference. First operand 42644 states and 56603 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:51,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:17:51,871 INFO L93 Difference]: Finished difference Result 62040 states and 82045 transitions. [2023-12-22 02:17:51,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:17:51,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-22 02:17:51,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:17:51,900 INFO L225 Difference]: With dead ends: 62040 [2023-12-22 02:17:51,900 INFO L226 Difference]: Without dead ends: 23254 [2023-12-22 02:17:51,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:17:51,924 INFO L413 NwaCegarLoop]: 1612 mSDtfsCounter, 43 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:17:51,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3142 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:17:51,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23254 states. [2023-12-22 02:17:52,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23254 to 23252. [2023-12-22 02:17:52,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23252 states, 23250 states have (on average 1.3238279569892473) internal successors, (30779), 23251 states have internal predecessors, (30779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:52,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23252 states to 23252 states and 30779 transitions. [2023-12-22 02:17:52,639 INFO L78 Accepts]: Start accepts. Automaton has 23252 states and 30779 transitions. Word has length 135 [2023-12-22 02:17:52,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:17:52,660 INFO L495 AbstractCegarLoop]: Abstraction has 23252 states and 30779 transitions. [2023-12-22 02:17:52,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 23252 states and 30779 transitions. [2023-12-22 02:17:52,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-22 02:17:52,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:17:52,662 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:17:52,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-22 02:17:52,866 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 [2023-12-22 02:17:52,866 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:17:52,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:17:52,867 INFO L85 PathProgramCache]: Analyzing trace with hash -421935319, now seen corresponding path program 1 times [2023-12-22 02:17:52,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:17:52,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037700323] [2023-12-22 02:17:52,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:17:52,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:17:52,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:17:52,868 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) [2023-12-22 02:17:52,869 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 [2023-12-22 02:17:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:17:53,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:17:53,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:17:54,101 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:17:54,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:17:54,593 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:17:54,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:17:54,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037700323] [2023-12-22 02:17:54,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037700323] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:17:54,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:17:54,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:17:54,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24287340] [2023-12-22 02:17:54,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:17:54,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:17:54,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:17:54,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:17:54,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:17:54,595 INFO L87 Difference]: Start difference. First operand 23252 states and 30779 transitions. Second operand has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:57,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:17:57,092 INFO L93 Difference]: Finished difference Result 58844 states and 76671 transitions. [2023-12-22 02:17:57,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-22 02:17:57,093 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-22 02:17:57,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:17:57,144 INFO L225 Difference]: With dead ends: 58844 [2023-12-22 02:17:57,144 INFO L226 Difference]: Without dead ends: 39450 [2023-12-22 02:17:57,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-22 02:17:57,234 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 3565 mSDsluCounter, 9400 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3565 SdHoareTripleChecker+Valid, 10979 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 02:17:57,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3565 Valid, 10979 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 02:17:57,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39450 states. [2023-12-22 02:17:58,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39450 to 36948. [2023-12-22 02:17:58,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36948 states, 36946 states have (on average 1.3025226005521573) internal successors, (48123), 36947 states have internal predecessors, (48123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:58,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36948 states to 36948 states and 48123 transitions. [2023-12-22 02:17:58,357 INFO L78 Accepts]: Start accepts. Automaton has 36948 states and 48123 transitions. Word has length 136 [2023-12-22 02:17:58,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:17:58,357 INFO L495 AbstractCegarLoop]: Abstraction has 36948 states and 48123 transitions. [2023-12-22 02:17:58,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:17:58,357 INFO L276 IsEmpty]: Start isEmpty. Operand 36948 states and 48123 transitions. [2023-12-22 02:17:58,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-22 02:17:58,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:17:58,359 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:17:58,366 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 [2023-12-22 02:17:58,564 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 [2023-12-22 02:17:58,564 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:17:58,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:17:58,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1615508577, now seen corresponding path program 1 times [2023-12-22 02:17:58,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:17:58,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857982190] [2023-12-22 02:17:58,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:17:58,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:17:58,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:17:58,567 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) [2023-12-22 02:17:58,568 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 [2023-12-22 02:17:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:17:58,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 02:17:58,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:17:58,895 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 02:17:58,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:17:59,078 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 02:17:59,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:17:59,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857982190] [2023-12-22 02:17:59,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857982190] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:17:59,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:17:59,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 02:17:59,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505035067] [2023-12-22 02:17:59,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:17:59,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 02:17:59,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:17:59,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 02:17:59,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:17:59,080 INFO L87 Difference]: Start difference. First operand 36948 states and 48123 transitions. Second operand has 6 states, 6 states have (on average 44.666666666666664) internal successors, (268), 6 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:18:01,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:18:01,889 INFO L93 Difference]: Finished difference Result 132686 states and 169296 transitions. [2023-12-22 02:18:01,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:18:01,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 44.666666666666664) internal successors, (268), 6 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-22 02:18:01,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:18:02,034 INFO L225 Difference]: With dead ends: 132686 [2023-12-22 02:18:02,034 INFO L226 Difference]: Without dead ends: 99596 [2023-12-22 02:18:02,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:18:02,063 INFO L413 NwaCegarLoop]: 1615 mSDtfsCounter, 4530 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4530 SdHoareTripleChecker+Valid, 3469 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:18:02,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4530 Valid, 3469 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:18:02,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99596 states. [2023-12-22 02:18:05,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99596 to 97864. [2023-12-22 02:18:05,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97864 states, 97862 states have (on average 1.2462958042958452) internal successors, (121965), 97863 states have internal predecessors, (121965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:18:05,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97864 states to 97864 states and 121965 transitions. [2023-12-22 02:18:05,193 INFO L78 Accepts]: Start accepts. Automaton has 97864 states and 121965 transitions. Word has length 138 [2023-12-22 02:18:05,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:18:05,194 INFO L495 AbstractCegarLoop]: Abstraction has 97864 states and 121965 transitions. [2023-12-22 02:18:05,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.666666666666664) internal successors, (268), 6 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:18:05,194 INFO L276 IsEmpty]: Start isEmpty. Operand 97864 states and 121965 transitions. [2023-12-22 02:18:05,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-22 02:18:05,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:18:05,218 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:18:05,223 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 [2023-12-22 02:18:05,423 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 [2023-12-22 02:18:05,424 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:18:05,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:18:05,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1347808473, now seen corresponding path program 1 times [2023-12-22 02:18:05,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:18:05,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402216612] [2023-12-22 02:18:05,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:18:05,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:18:05,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:18:05,426 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) [2023-12-22 02:18:05,430 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 [2023-12-22 02:18:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:18:05,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 02:18:05,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:18:07,233 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 70 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:18:07,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:18:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 70 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:18:07,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:18:07,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402216612] [2023-12-22 02:18:07,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402216612] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:18:07,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:18:07,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 02:18:07,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704839223] [2023-12-22 02:18:07,886 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:18:07,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:18:07,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:18:07,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:18:07,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:18:07,888 INFO L87 Difference]: Start difference. First operand 97864 states and 121965 transitions. Second operand has 26 states, 26 states have (on average 14.076923076923077) internal successors, (366), 25 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:18:12,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:18:12,230 INFO L93 Difference]: Finished difference Result 161264 states and 201057 transitions. [2023-12-22 02:18:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-22 02:18:12,230 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 14.076923076923077) internal successors, (366), 25 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2023-12-22 02:18:12,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:18:12,363 INFO L225 Difference]: With dead ends: 161264 [2023-12-22 02:18:12,364 INFO L226 Difference]: Without dead ends: 98766 [2023-12-22 02:18:12,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=383, Invalid=1423, Unknown=0, NotChecked=0, Total=1806 [2023-12-22 02:18:12,401 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 17136 mSDsluCounter, 6687 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17136 SdHoareTripleChecker+Valid, 8265 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 02:18:12,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17136 Valid, 8265 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 02:18:12,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98766 states. [2023-12-22 02:18:15,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98766 to 97864. [2023-12-22 02:18:15,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97864 states, 97862 states have (on average 1.2371400543622653) internal successors, (121069), 97863 states have internal predecessors, (121069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:18:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97864 states to 97864 states and 121069 transitions. [2023-12-22 02:18:15,766 INFO L78 Accepts]: Start accepts. Automaton has 97864 states and 121069 transitions. Word has length 201 [2023-12-22 02:18:15,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:18:15,766 INFO L495 AbstractCegarLoop]: Abstraction has 97864 states and 121069 transitions. [2023-12-22 02:18:15,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.076923076923077) internal successors, (366), 25 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:18:15,766 INFO L276 IsEmpty]: Start isEmpty. Operand 97864 states and 121069 transitions. [2023-12-22 02:18:15,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-22 02:18:15,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:18:15,789 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:18:15,794 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 (35)] Ended with exit code 0 [2023-12-22 02:18:15,994 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 [2023-12-22 02:18:15,994 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:18:15,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:18:15,995 INFO L85 PathProgramCache]: Analyzing trace with hash 723876441, now seen corresponding path program 1 times [2023-12-22 02:18:15,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:18:15,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915943200] [2023-12-22 02:18:15,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:18:15,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:18:15,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:18:15,996 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) [2023-12-22 02:18:15,998 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 [2023-12-22 02:18:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:18:16,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 02:18:16,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:18:17,923 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 70 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:18:17,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:18:18,892 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 70 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:18:18,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:18:18,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915943200] [2023-12-22 02:18:18,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915943200] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:18:18,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:18:18,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 02:18:18,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702721318] [2023-12-22 02:18:18,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:18:18,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:18:18,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:18:18,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:18:18,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:18:18,897 INFO L87 Difference]: Start difference. First operand 97864 states and 121069 transitions. Second operand has 26 states, 26 states have (on average 14.192307692307692) internal successors, (369), 26 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:18:30,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:18:30,541 INFO L93 Difference]: Finished difference Result 187678 states and 230088 transitions. [2023-12-22 02:18:30,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-22 02:18:30,542 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 14.192307692307692) internal successors, (369), 26 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2023-12-22 02:18:30,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:18:30,763 INFO L225 Difference]: With dead ends: 187678 [2023-12-22 02:18:30,763 INFO L226 Difference]: Without dead ends: 168732 [2023-12-22 02:18:30,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1366 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1011, Invalid=4995, Unknown=0, NotChecked=0, Total=6006 [2023-12-22 02:18:30,807 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 7100 mSDsluCounter, 21643 mSDsCounter, 0 mSdLazyCounter, 3159 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7100 SdHoareTripleChecker+Valid, 23380 SdHoareTripleChecker+Invalid, 3179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:18:30,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7100 Valid, 23380 Invalid, 3179 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 3159 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-22 02:18:30,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168732 states. [2023-12-22 02:18:34,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168732 to 69544. [2023-12-22 02:18:34,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69544 states, 69542 states have (on average 1.2396105950360934) internal successors, (86205), 69543 states have internal predecessors, (86205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:18:34,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69544 states to 69544 states and 86205 transitions. [2023-12-22 02:18:34,449 INFO L78 Accepts]: Start accepts. Automaton has 69544 states and 86205 transitions. Word has length 202 [2023-12-22 02:18:34,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:18:34,449 INFO L495 AbstractCegarLoop]: Abstraction has 69544 states and 86205 transitions. [2023-12-22 02:18:34,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.192307692307692) internal successors, (369), 26 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:18:34,449 INFO L276 IsEmpty]: Start isEmpty. Operand 69544 states and 86205 transitions. [2023-12-22 02:18:34,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-22 02:18:34,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:18:34,459 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:18:34,480 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 [2023-12-22 02:18:34,665 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 [2023-12-22 02:18:34,665 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:18:34,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:18:34,665 INFO L85 PathProgramCache]: Analyzing trace with hash -922300843, now seen corresponding path program 1 times [2023-12-22 02:18:34,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:18:34,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882689623] [2023-12-22 02:18:34,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:18:34,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:18:34,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:18:34,668 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) [2023-12-22 02:18:34,674 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 [2023-12-22 02:18:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:18:34,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 02:18:34,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:18:36,471 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 62 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:18:36,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:18:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 62 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:18:37,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:18:37,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882689623] [2023-12-22 02:18:37,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882689623] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:18:37,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:18:37,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 02:18:37,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059280423] [2023-12-22 02:18:37,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:18:37,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:18:37,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:18:37,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:18:37,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:18:37,272 INFO L87 Difference]: Start difference. First operand 69544 states and 86205 transitions. Second operand has 26 states, 26 states have (on average 14.307692307692308) internal successors, (372), 25 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:18:42,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:18:42,747 INFO L93 Difference]: Finished difference Result 130190 states and 161082 transitions. [2023-12-22 02:18:42,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-22 02:18:42,748 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 14.307692307692308) internal successors, (372), 25 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2023-12-22 02:18:42,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:18:42,849 INFO L225 Difference]: With dead ends: 130190 [2023-12-22 02:18:42,849 INFO L226 Difference]: Without dead ends: 69546 [2023-12-22 02:18:42,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=403, Invalid=1489, Unknown=0, NotChecked=0, Total=1892 [2023-12-22 02:18:42,873 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 13831 mSDsluCounter, 10058 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13831 SdHoareTripleChecker+Valid, 11636 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:18:42,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13831 Valid, 11636 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-22 02:18:42,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69546 states. [2023-12-22 02:18:45,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69546 to 69544. [2023-12-22 02:18:45,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69544 states, 69542 states have (on average 1.2317879842397401) internal successors, (85661), 69543 states have internal predecessors, (85661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:18:45,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69544 states to 69544 states and 85661 transitions. [2023-12-22 02:18:45,977 INFO L78 Accepts]: Start accepts. Automaton has 69544 states and 85661 transitions. Word has length 202 [2023-12-22 02:18:45,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:18:45,977 INFO L495 AbstractCegarLoop]: Abstraction has 69544 states and 85661 transitions. [2023-12-22 02:18:45,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.307692307692308) internal successors, (372), 25 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:18:45,978 INFO L276 IsEmpty]: Start isEmpty. Operand 69544 states and 85661 transitions. [2023-12-22 02:18:45,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-22 02:18:45,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:18:45,988 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:18:45,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-22 02:18:46,192 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 [2023-12-22 02:18:46,193 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:18:46,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:18:46,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1816925975, now seen corresponding path program 1 times [2023-12-22 02:18:46,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:18:46,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203563125] [2023-12-22 02:18:46,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:18:46,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:18:46,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:18:46,195 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) [2023-12-22 02:18:46,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-22 02:18:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:18:46,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 02:18:46,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:18:47,966 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 54 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:18:47,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:18:48,483 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 54 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:18:48,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:18:48,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203563125] [2023-12-22 02:18:48,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203563125] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:18:48,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:18:48,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 02:18:48,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981460719] [2023-12-22 02:18:48,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:18:48,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:18:48,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:18:48,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:18:48,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:18:48,491 INFO L87 Difference]: Start difference. First operand 69544 states and 85661 transitions. Second operand has 26 states, 26 states have (on average 14.538461538461538) internal successors, (378), 25 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:19:01,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:19:01,272 INFO L93 Difference]: Finished difference Result 317660 states and 395091 transitions. [2023-12-22 02:19:01,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-22 02:19:01,273 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 14.538461538461538) internal successors, (378), 25 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2023-12-22 02:19:01,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:19:01,841 INFO L225 Difference]: With dead ends: 317660 [2023-12-22 02:19:01,841 INFO L226 Difference]: Without dead ends: 287994 [2023-12-22 02:19:01,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2687 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1484, Invalid=7636, Unknown=0, NotChecked=0, Total=9120 [2023-12-22 02:19:01,909 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 19859 mSDsluCounter, 10225 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19859 SdHoareTripleChecker+Valid, 11803 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:19:01,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19859 Valid, 11803 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-22 02:19:02,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287994 states. [2023-12-22 02:19:06,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287994 to 69544. [2023-12-22 02:19:06,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69544 states, 69542 states have (on average 1.2274165252653073) internal successors, (85357), 69543 states have internal predecessors, (85357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:19:06,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69544 states to 69544 states and 85357 transitions. [2023-12-22 02:19:06,763 INFO L78 Accepts]: Start accepts. Automaton has 69544 states and 85357 transitions. Word has length 203 [2023-12-22 02:19:06,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:19:06,763 INFO L495 AbstractCegarLoop]: Abstraction has 69544 states and 85357 transitions. [2023-12-22 02:19:06,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.538461538461538) internal successors, (378), 25 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:19:06,763 INFO L276 IsEmpty]: Start isEmpty. Operand 69544 states and 85357 transitions. [2023-12-22 02:19:06,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-22 02:19:06,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:19:06,773 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:19:06,782 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 [2023-12-22 02:19:06,977 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 [2023-12-22 02:19:06,977 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:19:06,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:19:06,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1811321957, now seen corresponding path program 1 times [2023-12-22 02:19:06,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:19:06,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14428914] [2023-12-22 02:19:06,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:19:06,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:19:06,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:19:06,980 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) [2023-12-22 02:19:06,981 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 [2023-12-22 02:19:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:19:07,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 02:19:07,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:19:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 46 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:19:08,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:19:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 46 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:19:09,266 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:19:09,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14428914] [2023-12-22 02:19:09,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14428914] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:19:09,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:19:09,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 02:19:09,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776411246] [2023-12-22 02:19:09,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:19:09,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:19:09,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:19:09,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:19:09,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:19:09,268 INFO L87 Difference]: Start difference. First operand 69544 states and 85357 transitions. Second operand has 26 states, 26 states have (on average 14.76923076923077) internal successors, (384), 25 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:19:14,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:19:14,492 INFO L93 Difference]: Finished difference Result 109984 states and 135409 transitions. [2023-12-22 02:19:14,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 02:19:14,493 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 14.76923076923077) internal successors, (384), 25 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2023-12-22 02:19:14,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:19:14,658 INFO L225 Difference]: With dead ends: 109984 [2023-12-22 02:19:14,658 INFO L226 Difference]: Without dead ends: 80894 [2023-12-22 02:19:14,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 02:19:14,683 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 17069 mSDsluCounter, 8467 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17069 SdHoareTripleChecker+Valid, 10045 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:19:14,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17069 Valid, 10045 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-22 02:19:14,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80894 states. [2023-12-22 02:19:18,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80894 to 69544. [2023-12-22 02:19:18,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69544 states, 69542 states have (on average 1.2230450662908745) internal successors, (85053), 69543 states have internal predecessors, (85053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:19:18,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69544 states to 69544 states and 85053 transitions. [2023-12-22 02:19:18,355 INFO L78 Accepts]: Start accepts. Automaton has 69544 states and 85053 transitions. Word has length 204 [2023-12-22 02:19:18,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:19:18,355 INFO L495 AbstractCegarLoop]: Abstraction has 69544 states and 85053 transitions. [2023-12-22 02:19:18,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.76923076923077) internal successors, (384), 25 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:19:18,355 INFO L276 IsEmpty]: Start isEmpty. Operand 69544 states and 85053 transitions. [2023-12-22 02:19:18,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-22 02:19:18,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:19:18,381 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:19:18,388 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 [2023-12-22 02:19:18,588 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 [2023-12-22 02:19:18,588 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:19:18,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:19:18,589 INFO L85 PathProgramCache]: Analyzing trace with hash -801238023, now seen corresponding path program 1 times [2023-12-22 02:19:18,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:19:18,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795420797] [2023-12-22 02:19:18,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:19:18,589 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:19:18,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:19:18,590 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) [2023-12-22 02:19:18,621 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 [2023-12-22 02:19:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:19:18,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 02:19:18,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:19:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 38 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:19:20,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:19:21,028 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 38 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:19:21,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:19:21,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795420797] [2023-12-22 02:19:21,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795420797] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:19:21,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:19:21,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 02:19:21,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554050566] [2023-12-22 02:19:21,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:19:21,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:19:21,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:19:21,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:19:21,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:19:21,030 INFO L87 Difference]: Start difference. First operand 69544 states and 85053 transitions. Second operand has 26 states, 26 states have (on average 15.0) internal successors, (390), 25 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:19:26,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:19:26,763 INFO L93 Difference]: Finished difference Result 106672 states and 130753 transitions. [2023-12-22 02:19:26,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 02:19:26,764 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 15.0) internal successors, (390), 25 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2023-12-22 02:19:26,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:19:26,930 INFO L225 Difference]: With dead ends: 106672 [2023-12-22 02:19:26,930 INFO L226 Difference]: Without dead ends: 78158 [2023-12-22 02:19:26,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 02:19:26,958 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 18786 mSDsluCounter, 9868 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18786 SdHoareTripleChecker+Valid, 11446 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:19:26,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18786 Valid, 11446 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-22 02:19:27,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78158 states. [2023-12-22 02:19:30,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78158 to 69544. [2023-12-22 02:19:30,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69544 states, 69542 states have (on average 1.218673607316442) internal successors, (84749), 69543 states have internal predecessors, (84749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:19:30,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69544 states to 69544 states and 84749 transitions. [2023-12-22 02:19:30,737 INFO L78 Accepts]: Start accepts. Automaton has 69544 states and 84749 transitions. Word has length 205 [2023-12-22 02:19:30,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:19:30,737 INFO L495 AbstractCegarLoop]: Abstraction has 69544 states and 84749 transitions. [2023-12-22 02:19:30,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 15.0) internal successors, (390), 25 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:19:30,737 INFO L276 IsEmpty]: Start isEmpty. Operand 69544 states and 84749 transitions. [2023-12-22 02:19:30,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-22 02:19:30,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:19:30,747 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:19:30,752 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 (40)] Ended with exit code 0 [2023-12-22 02:19:30,952 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 [2023-12-22 02:19:30,952 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:19:30,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:19:30,952 INFO L85 PathProgramCache]: Analyzing trace with hash 526879349, now seen corresponding path program 1 times [2023-12-22 02:19:30,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:19:30,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432828518] [2023-12-22 02:19:30,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:19:30,953 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:19:30,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:19:30,954 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) [2023-12-22 02:19:30,958 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 [2023-12-22 02:19:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:19:31,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 02:19:31,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:19:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 30 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:19:32,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:19:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 30 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:19:33,363 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:19:33,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432828518] [2023-12-22 02:19:33,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432828518] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:19:33,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:19:33,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 02:19:33,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458425972] [2023-12-22 02:19:33,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:19:33,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:19:33,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:19:33,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:19:33,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:19:33,365 INFO L87 Difference]: Start difference. First operand 69544 states and 84749 transitions. Second operand has 26 states, 26 states have (on average 15.23076923076923) internal successors, (396), 25 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:19:39,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:19:39,067 INFO L93 Difference]: Finished difference Result 103360 states and 126097 transitions. [2023-12-22 02:19:39,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 02:19:39,068 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 15.23076923076923) internal successors, (396), 25 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2023-12-22 02:19:39,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:19:39,155 INFO L225 Difference]: With dead ends: 103360 [2023-12-22 02:19:39,156 INFO L226 Difference]: Without dead ends: 75422 [2023-12-22 02:19:39,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 02:19:39,176 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 17111 mSDsluCounter, 9870 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17111 SdHoareTripleChecker+Valid, 11448 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-22 02:19:39,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17111 Valid, 11448 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-22 02:19:39,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75422 states. [2023-12-22 02:19:42,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75422 to 69544. [2023-12-22 02:19:42,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69544 states, 69542 states have (on average 1.2143021483420091) internal successors, (84445), 69543 states have internal predecessors, (84445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:19:43,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69544 states to 69544 states and 84445 transitions. [2023-12-22 02:19:43,015 INFO L78 Accepts]: Start accepts. Automaton has 69544 states and 84445 transitions. Word has length 206 [2023-12-22 02:19:43,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:19:43,015 INFO L495 AbstractCegarLoop]: Abstraction has 69544 states and 84445 transitions. [2023-12-22 02:19:43,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 15.23076923076923) internal successors, (396), 25 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:19:43,018 INFO L276 IsEmpty]: Start isEmpty. Operand 69544 states and 84445 transitions. [2023-12-22 02:19:43,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-22 02:19:43,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:19:43,028 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:19:43,033 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 (41)] Ended with exit code 0 [2023-12-22 02:19:43,233 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 [2023-12-22 02:19:43,234 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:19:43,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:19:43,234 INFO L85 PathProgramCache]: Analyzing trace with hash 933113609, now seen corresponding path program 1 times [2023-12-22 02:19:43,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:19:43,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380614149] [2023-12-22 02:19:43,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:19:43,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:19:43,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:19:43,236 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) [2023-12-22 02:19:43,237 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 [2023-12-22 02:19:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:19:43,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 02:19:43,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:19:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 22 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:19:45,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:19:45,985 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 22 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:19:45,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:19:45,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380614149] [2023-12-22 02:19:45,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380614149] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:19:46,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:19:46,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 02:19:46,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123489731] [2023-12-22 02:19:46,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:19:46,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:19:46,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:19:46,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:19:46,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:19:46,006 INFO L87 Difference]: Start difference. First operand 69544 states and 84445 transitions. Second operand has 26 states, 26 states have (on average 15.461538461538462) internal successors, (402), 25 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:19:52,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:19:52,243 INFO L93 Difference]: Finished difference Result 100048 states and 121441 transitions. [2023-12-22 02:19:52,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 02:19:52,243 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 15.461538461538462) internal successors, (402), 25 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2023-12-22 02:19:52,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:19:52,323 INFO L225 Difference]: With dead ends: 100048 [2023-12-22 02:19:52,323 INFO L226 Difference]: Without dead ends: 72686 [2023-12-22 02:19:52,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 02:19:52,336 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 15596 mSDsluCounter, 9849 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15596 SdHoareTripleChecker+Valid, 11427 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-22 02:19:52,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15596 Valid, 11427 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-22 02:19:52,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72686 states. [2023-12-22 02:19:55,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72686 to 69544. [2023-12-22 02:19:56,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69544 states, 69542 states have (on average 1.2099306893675765) internal successors, (84141), 69543 states have internal predecessors, (84141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:19:56,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69544 states to 69544 states and 84141 transitions. [2023-12-22 02:19:56,097 INFO L78 Accepts]: Start accepts. Automaton has 69544 states and 84141 transitions. Word has length 207 [2023-12-22 02:19:56,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:19:56,098 INFO L495 AbstractCegarLoop]: Abstraction has 69544 states and 84141 transitions. [2023-12-22 02:19:56,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 15.461538461538462) internal successors, (402), 25 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:19:56,098 INFO L276 IsEmpty]: Start isEmpty. Operand 69544 states and 84141 transitions. [2023-12-22 02:19:56,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-22 02:19:56,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:19:56,108 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:19:56,112 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 [2023-12-22 02:19:56,310 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 [2023-12-22 02:19:56,310 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:19:56,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:19:56,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1283346299, now seen corresponding path program 1 times [2023-12-22 02:19:56,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:19:56,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965844545] [2023-12-22 02:19:56,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:19:56,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:19:56,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:19:56,320 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) [2023-12-22 02:19:56,355 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 [2023-12-22 02:19:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:19:56,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 02:19:56,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:19:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 13 proven. 143 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:19:58,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:19:58,999 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 13 proven. 143 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:19:58,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:19:58,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965844545] [2023-12-22 02:19:58,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965844545] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:19:58,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:19:58,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 02:19:58,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302327206] [2023-12-22 02:19:58,999 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:19:59,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:19:59,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:19:59,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:19:59,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:19:59,001 INFO L87 Difference]: Start difference. First operand 69544 states and 84141 transitions. Second operand has 26 states, 26 states have (on average 15.76923076923077) internal successors, (410), 26 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:20:09,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:20:09,787 INFO L93 Difference]: Finished difference Result 121434 states and 145542 transitions. [2023-12-22 02:20:09,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-22 02:20:09,787 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 15.76923076923077) internal successors, (410), 26 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2023-12-22 02:20:09,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:20:09,889 INFO L225 Difference]: With dead ends: 121434 [2023-12-22 02:20:09,889 INFO L226 Difference]: Without dead ends: 87640 [2023-12-22 02:20:09,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=760, Invalid=3796, Unknown=0, NotChecked=0, Total=4556 [2023-12-22 02:20:09,916 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 6927 mSDsluCounter, 22688 mSDsCounter, 0 mSdLazyCounter, 2768 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6927 SdHoareTripleChecker+Valid, 24367 SdHoareTripleChecker+Invalid, 2785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:20:09,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6927 Valid, 24367 Invalid, 2785 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 2768 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-22 02:20:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87640 states. [2023-12-22 02:20:14,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87640 to 77672. [2023-12-22 02:20:14,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77672 states, 77670 states have (on average 1.2025878717651604) internal successors, (93405), 77671 states have internal predecessors, (93405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:20:14,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77672 states to 77672 states and 93405 transitions. [2023-12-22 02:20:14,412 INFO L78 Accepts]: Start accepts. Automaton has 77672 states and 93405 transitions. Word has length 208 [2023-12-22 02:20:14,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:20:14,413 INFO L495 AbstractCegarLoop]: Abstraction has 77672 states and 93405 transitions. [2023-12-22 02:20:14,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 15.76923076923077) internal successors, (410), 26 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:20:14,413 INFO L276 IsEmpty]: Start isEmpty. Operand 77672 states and 93405 transitions. [2023-12-22 02:20:14,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-22 02:20:14,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:20:14,423 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:20:14,430 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 (43)] Ended with exit code 0 [2023-12-22 02:20:14,628 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 [2023-12-22 02:20:14,628 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:20:14,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:20:14,629 INFO L85 PathProgramCache]: Analyzing trace with hash -928640727, now seen corresponding path program 1 times [2023-12-22 02:20:14,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:20:14,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618451028] [2023-12-22 02:20:14,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:20:14,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:20:14,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:20:14,630 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) [2023-12-22 02:20:14,632 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 [2023-12-22 02:20:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:20:14,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 02:20:14,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:20:16,880 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 22 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:20:16,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:20:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 22 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:20:17,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:20:17,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618451028] [2023-12-22 02:20:17,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618451028] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:20:17,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:20:17,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 02:20:17,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75948706] [2023-12-22 02:20:17,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:20:17,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:20:17,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:20:17,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:20:17,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:20:17,566 INFO L87 Difference]: Start difference. First operand 77672 states and 93405 transitions. Second operand has 26 states, 26 states have (on average 15.576923076923077) internal successors, (405), 26 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:20:29,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:20:29,014 INFO L93 Difference]: Finished difference Result 132650 states and 158470 transitions. [2023-12-22 02:20:29,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 02:20:29,015 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 15.576923076923077) internal successors, (405), 26 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2023-12-22 02:20:29,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:20:29,169 INFO L225 Difference]: With dead ends: 132650 [2023-12-22 02:20:29,169 INFO L226 Difference]: Without dead ends: 116872 [2023-12-22 02:20:29,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 02:20:29,203 INFO L413 NwaCegarLoop]: 1693 mSDtfsCounter, 5390 mSDsluCounter, 22753 mSDsCounter, 0 mSdLazyCounter, 2731 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5390 SdHoareTripleChecker+Valid, 24446 SdHoareTripleChecker+Invalid, 2749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-22 02:20:29,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5390 Valid, 24446 Invalid, 2749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2731 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-22 02:20:29,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116872 states. [2023-12-22 02:20:34,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116872 to 99544. [2023-12-22 02:20:35,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99544 states, 99542 states have (on average 1.1989009664262322) internal successors, (119341), 99543 states have internal predecessors, (119341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:20:35,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99544 states to 99544 states and 119341 transitions. [2023-12-22 02:20:35,175 INFO L78 Accepts]: Start accepts. Automaton has 99544 states and 119341 transitions. Word has length 208 [2023-12-22 02:20:35,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:20:35,176 INFO L495 AbstractCegarLoop]: Abstraction has 99544 states and 119341 transitions. [2023-12-22 02:20:35,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 15.576923076923077) internal successors, (405), 26 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:20:35,176 INFO L276 IsEmpty]: Start isEmpty. Operand 99544 states and 119341 transitions. [2023-12-22 02:20:35,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-22 02:20:35,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:20:35,188 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:20:35,195 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 (44)] Forceful destruction successful, exit code 0 [2023-12-22 02:20:35,390 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 [2023-12-22 02:20:35,390 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:20:35,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:20:35,391 INFO L85 PathProgramCache]: Analyzing trace with hash 857241349, now seen corresponding path program 1 times [2023-12-22 02:20:35,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:20:35,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477130430] [2023-12-22 02:20:35,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:20:35,391 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:20:35,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:20:35,393 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) [2023-12-22 02:20:35,394 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 [2023-12-22 02:20:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:20:35,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 02:20:35,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:20:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 31 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:20:37,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:20:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 31 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:20:38,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:20:38,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477130430] [2023-12-22 02:20:38,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477130430] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:20:38,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:20:38,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 02:20:38,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673946256] [2023-12-22 02:20:38,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:20:38,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:20:38,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:20:38,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:20:38,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:20:38,135 INFO L87 Difference]: Start difference. First operand 99544 states and 119341 transitions. Second operand has 26 states, 26 states have (on average 15.384615384615385) internal successors, (400), 26 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:20:53,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:20:53,430 INFO L93 Difference]: Finished difference Result 175786 states and 209562 transitions. [2023-12-22 02:20:53,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 02:20:53,431 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 15.384615384615385) internal successors, (400), 26 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2023-12-22 02:20:53,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:20:53,628 INFO L225 Difference]: With dead ends: 175786 [2023-12-22 02:20:53,628 INFO L226 Difference]: Without dead ends: 154416 [2023-12-22 02:20:53,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 02:20:53,668 INFO L413 NwaCegarLoop]: 1707 mSDtfsCounter, 2309 mSDsluCounter, 26420 mSDsCounter, 0 mSdLazyCounter, 3454 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 28127 SdHoareTripleChecker+Invalid, 3470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:20:53,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2309 Valid, 28127 Invalid, 3470 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 3454 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-22 02:20:53,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154416 states. [2023-12-22 02:21:01,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154416 to 127960. [2023-12-22 02:21:01,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127960 states, 127958 states have (on average 1.1956501352006128) internal successors, (152993), 127959 states have internal predecessors, (152993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:21:01,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127960 states to 127960 states and 152993 transitions. [2023-12-22 02:21:01,444 INFO L78 Accepts]: Start accepts. Automaton has 127960 states and 152993 transitions. Word has length 208 [2023-12-22 02:21:01,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:21:01,444 INFO L495 AbstractCegarLoop]: Abstraction has 127960 states and 152993 transitions. [2023-12-22 02:21:01,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 15.384615384615385) internal successors, (400), 26 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:21:01,444 INFO L276 IsEmpty]: Start isEmpty. Operand 127960 states and 152993 transitions. [2023-12-22 02:21:01,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-22 02:21:01,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:21:01,459 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:21:01,463 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 [2023-12-22 02:21:01,663 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 [2023-12-22 02:21:01,663 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:21:01,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:21:01,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1355242153, now seen corresponding path program 1 times [2023-12-22 02:21:01,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:21:01,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192443373] [2023-12-22 02:21:01,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:21:01,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:21:01,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:21:01,666 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) [2023-12-22 02:21:01,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-12-22 02:21:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:21:01,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 02:21:01,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:21:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 40 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:21:03,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:21:04,766 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 40 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:21:04,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:21:04,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192443373] [2023-12-22 02:21:04,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192443373] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:21:04,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:21:04,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 02:21:04,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482596553] [2023-12-22 02:21:04,767 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:21:04,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:21:04,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:21:04,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:21:04,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:21:04,768 INFO L87 Difference]: Start difference. First operand 127960 states and 152993 transitions. Second operand has 26 states, 26 states have (on average 15.192307692307692) internal successors, (395), 26 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:21:21,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:21:21,580 INFO L93 Difference]: Finished difference Result 235030 states and 279716 transitions. [2023-12-22 02:21:21,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 02:21:21,580 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 15.192307692307692) internal successors, (395), 26 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2023-12-22 02:21:21,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:21:21,870 INFO L225 Difference]: With dead ends: 235030 [2023-12-22 02:21:21,870 INFO L226 Difference]: Without dead ends: 206112 [2023-12-22 02:21:21,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 02:21:21,924 INFO L413 NwaCegarLoop]: 1721 mSDtfsCounter, 5589 mSDsluCounter, 21579 mSDsCounter, 0 mSdLazyCounter, 2935 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5589 SdHoareTripleChecker+Valid, 23300 SdHoareTripleChecker+Invalid, 2951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:21:21,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5589 Valid, 23300 Invalid, 2951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2935 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-22 02:21:22,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206112 states. [2023-12-22 02:21:32,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206112 to 165628. [2023-12-22 02:21:32,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165628 states, 165626 states have (on average 1.1928260055788342) internal successors, (197563), 165627 states have internal predecessors, (197563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:21:32,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165628 states to 165628 states and 197563 transitions. [2023-12-22 02:21:32,518 INFO L78 Accepts]: Start accepts. Automaton has 165628 states and 197563 transitions. Word has length 208 [2023-12-22 02:21:32,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:21:32,518 INFO L495 AbstractCegarLoop]: Abstraction has 165628 states and 197563 transitions. [2023-12-22 02:21:32,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 15.192307692307692) internal successors, (395), 26 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:21:32,519 INFO L276 IsEmpty]: Start isEmpty. Operand 165628 states and 197563 transitions. [2023-12-22 02:21:32,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-22 02:21:32,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:21:32,538 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:21:32,548 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 (46)] Forceful destruction successful, exit code 0 [2023-12-22 02:21:32,743 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 [2023-12-22 02:21:32,743 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:21:32,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:21:32,743 INFO L85 PathProgramCache]: Analyzing trace with hash 63511941, now seen corresponding path program 1 times [2023-12-22 02:21:32,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:21:32,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454982106] [2023-12-22 02:21:32,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:21:32,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:21:32,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:21:32,745 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) [2023-12-22 02:21:32,776 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 [2023-12-22 02:21:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:21:32,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 02:21:32,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:21:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 49 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:21:34,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:21:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 49 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:21:35,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:21:35,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454982106] [2023-12-22 02:21:35,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454982106] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:21:35,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:21:35,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 02:21:35,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24952164] [2023-12-22 02:21:35,528 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:21:35,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:21:35,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:21:35,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:21:35,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:21:35,529 INFO L87 Difference]: Start difference. First operand 165628 states and 197563 transitions. Second operand has 26 states, 26 states have (on average 15.0) internal successors, (390), 26 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:21:54,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:21:54,950 INFO L93 Difference]: Finished difference Result 312983 states and 372141 transitions. [2023-12-22 02:21:54,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 02:21:54,951 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 15.0) internal successors, (390), 26 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2023-12-22 02:21:54,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted.