/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.4.ufo.UNBOUNDED.pals+Problem12_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 00:26:21,465 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 00:26:21,533 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 00:26:21,537 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 00:26:21,538 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 00:26:21,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 00:26:21,561 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 00:26:21,561 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 00:26:21,562 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 00:26:21,565 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 00:26:21,565 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 00:26:21,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 00:26:21,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 00:26:21,567 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 00:26:21,567 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 00:26:21,568 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 00:26:21,568 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 00:26:21,568 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 00:26:21,568 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 00:26:21,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 00:26:21,569 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 00:26:21,569 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 00:26:21,569 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 00:26:21,569 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 00:26:21,569 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 00:26:21,570 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 00:26:21,570 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 00:26:21,570 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 00:26:21,570 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 00:26:21,570 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 00:26:21,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 00:26:21,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 00:26:21,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 00:26:21,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 00:26:21,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 00:26:21,572 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 00:26:21,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 00:26:21,572 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 00:26:21,572 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 00:26:21,572 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 00:26:21,573 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 00:26:21,573 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 00:26:21,573 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 00:26:21,573 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 00:26:21,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 00:26:21,574 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 00:26:21,574 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 00:26:21,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 00:26:21,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 00:26:21,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 00:26:21,815 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 00:26:21,815 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 00:26:21,817 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-12-22 00:26:23,076 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 00:26:23,471 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 00:26:23,471 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-12-22 00:26:23,498 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bef985ece/625869609f0c457ba8badaa1ce1fe827/FLAGc928391f4 [2023-12-22 00:26:23,514 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bef985ece/625869609f0c457ba8badaa1ce1fe827 [2023-12-22 00:26:23,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 00:26:23,518 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 00:26:23,520 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 00:26:23,520 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 00:26:23,524 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 00:26:23,524 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:26:23" (1/1) ... [2023-12-22 00:26:23,525 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb5920a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:23, skipping insertion in model container [2023-12-22 00:26:23,525 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:26:23" (1/1) ... [2023-12-22 00:26:23,627 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 00:26:23,939 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.4.ufo.UNBOUNDED.pals+Problem12_label02.c[8712,8725] [2023-12-22 00:26:24,026 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.4.ufo.UNBOUNDED.pals+Problem12_label02.c[16002,16015] [2023-12-22 00:26:24,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 00:26:24,642 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 00:26:24,676 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.4.ufo.UNBOUNDED.pals+Problem12_label02.c[8712,8725] [2023-12-22 00:26:24,685 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.4.ufo.UNBOUNDED.pals+Problem12_label02.c[16002,16015] [2023-12-22 00:26:25,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 00:26:25,113 INFO L206 MainTranslator]: Completed translation [2023-12-22 00:26:25,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:25 WrapperNode [2023-12-22 00:26:25,113 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 00:26:25,115 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 00:26:25,115 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 00:26:25,115 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 00:26:25,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:25" (1/1) ... [2023-12-22 00:26:25,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:25" (1/1) ... [2023-12-22 00:26:25,371 INFO L138 Inliner]: procedures = 37, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5014 [2023-12-22 00:26:25,371 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 00:26:25,372 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 00:26:25,372 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 00:26:25,372 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 00:26:25,380 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:25" (1/1) ... [2023-12-22 00:26:25,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:25" (1/1) ... [2023-12-22 00:26:25,406 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:25" (1/1) ... [2023-12-22 00:26:25,486 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 00:26:25,487 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:25" (1/1) ... [2023-12-22 00:26:25,487 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:25" (1/1) ... [2023-12-22 00:26:25,567 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:25" (1/1) ... [2023-12-22 00:26:25,607 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:25" (1/1) ... [2023-12-22 00:26:25,637 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:25" (1/1) ... [2023-12-22 00:26:25,656 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:25" (1/1) ... [2023-12-22 00:26:25,697 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 00:26:25,699 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 00:26:25,699 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 00:26:25,699 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 00:26:25,700 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:25" (1/1) ... [2023-12-22 00:26:25,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 00:26:25,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 00:26:25,731 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 00:26:25,739 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 00:26:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 00:26:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 00:26:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 00:26:25,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 00:26:25,826 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 00:26:25,827 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 00:26:57,321 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 00:26:57,369 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 00:26:57,370 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-22 00:26:57,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:26:57 BoogieIcfgContainer [2023-12-22 00:26:57,370 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 00:26:57,372 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 00:26:57,372 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 00:26:57,374 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 00:26:57,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:26:23" (1/3) ... [2023-12-22 00:26:57,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd2b06a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:26:57, skipping insertion in model container [2023-12-22 00:26:57,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:26:25" (2/3) ... [2023-12-22 00:26:57,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd2b06a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:26:57, skipping insertion in model container [2023-12-22 00:26:57,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:26:57" (3/3) ... [2023-12-22 00:26:57,376 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-12-22 00:26:57,389 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 00:26:57,390 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-22 00:26:57,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 00:26:57,457 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;@262ed50d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 00:26:57,458 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-22 00:26:57,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states 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 00:26:57,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-22 00:26:57,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:26:57,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:26:57,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:26:57,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:26:57,483 INFO L85 PathProgramCache]: Analyzing trace with hash -814363752, now seen corresponding path program 1 times [2023-12-22 00:26:57,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:26:57,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867388533] [2023-12-22 00:26:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:26:57,495 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:26:57,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:26:57,497 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 00:26:57,505 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 00:26:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:26:57,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 00:26:57,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:26:57,609 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 00:26:57,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:26:57,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:26:57,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867388533] [2023-12-22 00:26:57,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867388533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:26:57,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:26:57,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 00:26:57,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280521616] [2023-12-22 00:26:57,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:26:57,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 00:26:57,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:26:57,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 00:26:57,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 00:26:57,642 INFO L87 Difference]: Start difference. First operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 0 states have call successors, (0), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states 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 00:26:57,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:26:57,726 INFO L93 Difference]: Finished difference Result 1616 states and 3185 transitions. [2023-12-22 00:26:57,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 00:26:57,728 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-22 00:26:57,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:26:57,741 INFO L225 Difference]: With dead ends: 1616 [2023-12-22 00:26:57,742 INFO L226 Difference]: Without dead ends: 818 [2023-12-22 00:26:57,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 00:26:57,749 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:26:57,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1547 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:26:57,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-22 00:26:57,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2023-12-22 00:26:57,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 816 states have (on average 1.8970588235294117) internal successors, (1548), 817 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states 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 00:26:57,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1548 transitions. [2023-12-22 00:26:57,847 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1548 transitions. Word has length 19 [2023-12-22 00:26:57,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:26:57,847 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1548 transitions. [2023-12-22 00:26:57,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states 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 00:26:57,848 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1548 transitions. [2023-12-22 00:26:57,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-22 00:26:57,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:26:57,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:26:57,852 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 00:26:58,050 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 00:26:58,050 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:26:58,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:26:58,051 INFO L85 PathProgramCache]: Analyzing trace with hash -2094227430, now seen corresponding path program 1 times [2023-12-22 00:26:58,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:26:58,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819273278] [2023-12-22 00:26:58,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:26:58,052 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 00:26:58,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:26:58,053 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 00:26:58,055 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 00:26:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:26:58,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 00:26:58,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:26:58,170 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 00:26:58,170 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:26:58,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:26:58,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819273278] [2023-12-22 00:26:58,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819273278] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:26:58,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:26:58,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 00:26:58,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982988536] [2023-12-22 00:26:58,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:26:58,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 00:26:58,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:26:58,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 00:26:58,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 00:26:58,179 INFO L87 Difference]: Start difference. First operand 818 states and 1548 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states 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 00:26:58,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:26:58,291 INFO L93 Difference]: Finished difference Result 858 states and 1610 transitions. [2023-12-22 00:26:58,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 00:26:58,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-22 00:26:58,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:26:58,295 INFO L225 Difference]: With dead ends: 858 [2023-12-22 00:26:58,295 INFO L226 Difference]: Without dead ends: 818 [2023-12-22 00:26:58,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 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 00:26:58,297 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 0 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:26:58,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4608 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 00:26:58,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-22 00:26:58,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2023-12-22 00:26:58,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 816 states have (on average 1.8688725490196079) internal successors, (1525), 817 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states 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 00:26:58,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1525 transitions. [2023-12-22 00:26:58,313 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1525 transitions. Word has length 19 [2023-12-22 00:26:58,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:26:58,313 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1525 transitions. [2023-12-22 00:26:58,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states 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 00:26:58,313 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1525 transitions. [2023-12-22 00:26:58,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-22 00:26:58,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:26:58,314 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] [2023-12-22 00:26:58,319 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 00:26:58,517 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 00:26:58,518 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:26:58,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:26:58,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1956523179, now seen corresponding path program 1 times [2023-12-22 00:26:58,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:26:58,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972644589] [2023-12-22 00:26:58,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:26:58,519 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 00:26:58,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:26:58,520 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 00:26:58,524 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 00:26:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:26:58,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 00:26:58,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:26:59,183 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 00:26:59,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:26:59,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:26:59,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972644589] [2023-12-22 00:26:59,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972644589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:26:59,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:26:59,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 00:26:59,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858865567] [2023-12-22 00:26:59,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:26:59,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 00:26:59,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:26:59,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 00:26:59,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:26:59,186 INFO L87 Difference]: Start difference. First operand 818 states and 1525 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 00:26:59,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:26:59,431 INFO L93 Difference]: Finished difference Result 1003 states and 1820 transitions. [2023-12-22 00:26:59,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 00:26:59,433 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-22 00:26:59,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:26:59,437 INFO L225 Difference]: With dead ends: 1003 [2023-12-22 00:26:59,437 INFO L226 Difference]: Without dead ends: 966 [2023-12-22 00:26:59,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:26:59,439 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 4621 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4621 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 00:26:59,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4621 Valid, 1776 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 00:26:59,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2023-12-22 00:26:59,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 888. [2023-12-22 00:26:59,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 886 states have (on average 1.8487584650112867) internal successors, (1638), 887 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states 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 00:26:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1638 transitions. [2023-12-22 00:26:59,462 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1638 transitions. Word has length 41 [2023-12-22 00:26:59,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:26:59,463 INFO L495 AbstractCegarLoop]: Abstraction has 888 states and 1638 transitions. [2023-12-22 00:26:59,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 00:26:59,463 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1638 transitions. [2023-12-22 00:26:59,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-22 00:26:59,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:26:59,464 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] [2023-12-22 00:26:59,483 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 00:26:59,684 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 00:26:59,685 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:26:59,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:26:59,685 INFO L85 PathProgramCache]: Analyzing trace with hash 853290117, now seen corresponding path program 1 times [2023-12-22 00:26:59,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:26:59,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103508705] [2023-12-22 00:26:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:26:59,686 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 00:26:59,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:26:59,687 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 00:26:59,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-22 00:26:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:26:59,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:26:59,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:26:59,842 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 00:26:59,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:26:59,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:26:59,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103508705] [2023-12-22 00:26:59,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103508705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:26:59,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:26:59,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:26:59,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308004280] [2023-12-22 00:26:59,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:26:59,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:26:59,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:26:59,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:26:59,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:26:59,844 INFO L87 Difference]: Start difference. First operand 888 states and 1638 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 00:26:59,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:26:59,889 INFO L93 Difference]: Finished difference Result 1086 states and 1954 transitions. [2023-12-22 00:26:59,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:26:59,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-22 00:26:59,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:26:59,893 INFO L225 Difference]: With dead ends: 1086 [2023-12-22 00:26:59,893 INFO L226 Difference]: Without dead ends: 979 [2023-12-22 00:26:59,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 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 00:26:59,894 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1474 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:26:59,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1569 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:26:59,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2023-12-22 00:26:59,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 974. [2023-12-22 00:26:59,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 972 states have (on average 1.8209876543209877) internal successors, (1770), 973 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states 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 00:26:59,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1770 transitions. [2023-12-22 00:26:59,913 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1770 transitions. Word has length 43 [2023-12-22 00:26:59,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:26:59,913 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 1770 transitions. [2023-12-22 00:26:59,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 00:26:59,913 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1770 transitions. [2023-12-22 00:26:59,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-22 00:26:59,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:26:59,914 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] [2023-12-22 00:26:59,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-22 00:27:00,117 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 00:27:00,118 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:27:00,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:27:00,119 INFO L85 PathProgramCache]: Analyzing trace with hash 620299777, now seen corresponding path program 1 times [2023-12-22 00:27:00,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:27:00,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630754835] [2023-12-22 00:27:00,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:27:00,120 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 00:27:00,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:27:00,123 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 00:27:00,125 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 00:27:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:27:00,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 00:27:00,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:27:00,279 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 00:27:00,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:27:00,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:27:00,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630754835] [2023-12-22 00:27:00,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630754835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:27:00,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:27:00,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 00:27:00,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622714432] [2023-12-22 00:27:00,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:27:00,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 00:27:00,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:27:00,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 00:27:00,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 00:27:00,281 INFO L87 Difference]: Start difference. First operand 974 states and 1770 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 00:27:00,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:27:00,349 INFO L93 Difference]: Finished difference Result 988 states and 1787 transitions. [2023-12-22 00:27:00,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 00:27:00,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-22 00:27:00,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:27:00,354 INFO L225 Difference]: With dead ends: 988 [2023-12-22 00:27:00,355 INFO L226 Difference]: Without dead ends: 986 [2023-12-22 00:27:00,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 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 00:27:00,356 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 1 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4555 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 00:27:00,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4555 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:27:00,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2023-12-22 00:27:00,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 982. [2023-12-22 00:27:00,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 980 states have (on average 1.813265306122449) internal successors, (1777), 981 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states 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 00:27:00,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1777 transitions. [2023-12-22 00:27:00,379 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1777 transitions. Word has length 44 [2023-12-22 00:27:00,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:27:00,380 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1777 transitions. [2023-12-22 00:27:00,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 00:27:00,380 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1777 transitions. [2023-12-22 00:27:00,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-22 00:27:00,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:27:00,381 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] [2023-12-22 00:27:00,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-22 00:27:00,585 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 00:27:00,585 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:27:00,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:27:00,586 INFO L85 PathProgramCache]: Analyzing trace with hash 747994589, now seen corresponding path program 1 times [2023-12-22 00:27:00,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:27:00,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427677355] [2023-12-22 00:27:00,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:27:00,586 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:27:00,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:27:00,588 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 00:27:00,612 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 00:27:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:27:00,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:27:00,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:27:00,754 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 00:27:00,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:27:00,755 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:27:00,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427677355] [2023-12-22 00:27:00,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427677355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:27:00,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:27:00,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:27:00,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131815593] [2023-12-22 00:27:00,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:27:00,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:27:00,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:27:00,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:27:00,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:27:00,757 INFO L87 Difference]: Start difference. First operand 982 states and 1777 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 00:27:00,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:27:00,810 INFO L93 Difference]: Finished difference Result 1360 states and 2357 transitions. [2023-12-22 00:27:00,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:27:00,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-22 00:27:00,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:27:00,815 INFO L225 Difference]: With dead ends: 1360 [2023-12-22 00:27:00,815 INFO L226 Difference]: Without dead ends: 1159 [2023-12-22 00:27:00,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 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 00:27:00,818 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 1485 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1620 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 00:27:00,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1620 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:27:00,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2023-12-22 00:27:00,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1157. [2023-12-22 00:27:00,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1155 states have (on average 1.7653679653679655) internal successors, (2039), 1156 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states 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 00:27:00,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 2039 transitions. [2023-12-22 00:27:00,849 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 2039 transitions. Word has length 45 [2023-12-22 00:27:00,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:27:00,849 INFO L495 AbstractCegarLoop]: Abstraction has 1157 states and 2039 transitions. [2023-12-22 00:27:00,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 00:27:00,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 2039 transitions. [2023-12-22 00:27:00,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-22 00:27:00,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:27:00,852 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] [2023-12-22 00:27:00,877 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 00:27:01,055 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 00:27:01,056 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:27:01,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:27:01,057 INFO L85 PathProgramCache]: Analyzing trace with hash 122338525, now seen corresponding path program 1 times [2023-12-22 00:27:01,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:27:01,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324832292] [2023-12-22 00:27:01,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:27:01,058 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 00:27:01,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:27:01,073 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 00:27:01,108 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 00:27:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:27:01,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:27:01,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:27:01,279 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 00:27:01,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:27:01,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:27:01,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1324832292] [2023-12-22 00:27:01,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1324832292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:27:01,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:27:01,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:27:01,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464007801] [2023-12-22 00:27:01,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:27:01,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:27:01,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:27:01,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:27:01,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:27:01,281 INFO L87 Difference]: Start difference. First operand 1157 states and 2039 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 00:27:01,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:27:01,343 INFO L93 Difference]: Finished difference Result 1861 states and 3101 transitions. [2023-12-22 00:27:01,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:27:01,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-22 00:27:01,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:27:01,350 INFO L225 Difference]: With dead ends: 1861 [2023-12-22 00:27:01,350 INFO L226 Difference]: Without dead ends: 1485 [2023-12-22 00:27:01,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 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 00:27:01,352 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1483 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1622 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 00:27:01,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 1622 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:27:01,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2023-12-22 00:27:01,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1483. [2023-12-22 00:27:01,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1481 states have (on average 1.6981769074949358) internal successors, (2515), 1482 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states 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 00:27:01,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 2515 transitions. [2023-12-22 00:27:01,385 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 2515 transitions. Word has length 45 [2023-12-22 00:27:01,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:27:01,385 INFO L495 AbstractCegarLoop]: Abstraction has 1483 states and 2515 transitions. [2023-12-22 00:27:01,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 00:27:01,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 2515 transitions. [2023-12-22 00:27:01,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-22 00:27:01,386 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:27:01,386 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] [2023-12-22 00:27:01,409 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 00:27:01,590 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 00:27:01,590 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:27:01,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:27:01,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1011071965, now seen corresponding path program 1 times [2023-12-22 00:27:01,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:27:01,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917188156] [2023-12-22 00:27:01,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:27:01,592 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 00:27:01,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:27:01,609 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 00:27:01,675 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 00:27:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:27:01,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:27:01,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:27:01,793 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 00:27:01,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:27:01,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:27:01,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917188156] [2023-12-22 00:27:01,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917188156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:27:01,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:27:01,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:27:01,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344092615] [2023-12-22 00:27:01,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:27:01,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:27:01,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:27:01,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:27:01,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:27:01,795 INFO L87 Difference]: Start difference. First operand 1483 states and 2515 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 00:27:01,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:27:01,845 INFO L93 Difference]: Finished difference Result 2791 states and 4445 transitions. [2023-12-22 00:27:01,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:27:01,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-22 00:27:01,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:27:01,853 INFO L225 Difference]: With dead ends: 2791 [2023-12-22 00:27:01,854 INFO L226 Difference]: Without dead ends: 2089 [2023-12-22 00:27:01,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 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 00:27:01,856 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 1481 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1624 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 00:27:01,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1624 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:27:01,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2023-12-22 00:27:01,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 2087. [2023-12-22 00:27:01,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2087 states, 2085 states have (on average 1.6167865707434053) internal successors, (3371), 2086 states have internal predecessors, (3371), 0 states have call successors, (0), 0 states 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 00:27:01,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 3371 transitions. [2023-12-22 00:27:01,902 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 3371 transitions. Word has length 45 [2023-12-22 00:27:01,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:27:01,902 INFO L495 AbstractCegarLoop]: Abstraction has 2087 states and 3371 transitions. [2023-12-22 00:27:01,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 00:27:01,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 3371 transitions. [2023-12-22 00:27:01,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-22 00:27:01,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:27:01,903 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] [2023-12-22 00:27:01,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-22 00:27:02,107 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 00:27:02,107 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:27:02,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:27:02,108 INFO L85 PathProgramCache]: Analyzing trace with hash -898804350, now seen corresponding path program 1 times [2023-12-22 00:27:02,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:27:02,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617261164] [2023-12-22 00:27:02,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:27:02,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:27:02,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:27:02,109 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 00:27:02,113 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 00:27:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:27:02,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:27:02,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:27:02,230 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 00:27:02,230 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:27:02,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:27:02,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617261164] [2023-12-22 00:27:02,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617261164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:27:02,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:27:02,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:27:02,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181539932] [2023-12-22 00:27:02,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:27:02,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:27:02,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:27:02,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:27:02,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:27:02,232 INFO L87 Difference]: Start difference. First operand 2087 states and 3371 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 00:27:02,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:27:02,295 INFO L93 Difference]: Finished difference Result 3438 states and 5393 transitions. [2023-12-22 00:27:02,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:27:02,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-22 00:27:02,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:27:02,307 INFO L225 Difference]: With dead ends: 3438 [2023-12-22 00:27:02,307 INFO L226 Difference]: Without dead ends: 2691 [2023-12-22 00:27:02,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 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 00:27:02,309 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 1484 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1621 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 00:27:02,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:27:02,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2023-12-22 00:27:02,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2689. [2023-12-22 00:27:02,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2689 states, 2687 states have (on average 1.576851507257164) internal successors, (4237), 2688 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 00:27:02,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2689 states to 2689 states and 4237 transitions. [2023-12-22 00:27:02,373 INFO L78 Accepts]: Start accepts. Automaton has 2689 states and 4237 transitions. Word has length 47 [2023-12-22 00:27:02,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:27:02,373 INFO L495 AbstractCegarLoop]: Abstraction has 2689 states and 4237 transitions. [2023-12-22 00:27:02,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 00:27:02,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2689 states and 4237 transitions. [2023-12-22 00:27:02,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-22 00:27:02,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:27:02,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:27:02,378 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 00:27:02,578 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 00:27:02,578 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:27:02,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:27:02,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1096451666, now seen corresponding path program 1 times [2023-12-22 00:27:02,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:27:02,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039890102] [2023-12-22 00:27:02,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:27:02,579 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 00:27:02,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:27:02,581 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 00:27:02,606 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 00:27:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:27:02,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:27:02,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:27:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:27:02,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:27:02,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:27:02,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039890102] [2023-12-22 00:27:02,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039890102] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:27:02,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:27:02,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:27:02,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433591913] [2023-12-22 00:27:02,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:27:02,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:27:02,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:27:02,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:27:02,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:27:02,705 INFO L87 Difference]: Start difference. First operand 2689 states and 4237 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 00:27:02,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:27:02,754 INFO L93 Difference]: Finished difference Result 4054 states and 6249 transitions. [2023-12-22 00:27:02,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:27:02,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2023-12-22 00:27:02,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:27:02,762 INFO L225 Difference]: With dead ends: 4054 [2023-12-22 00:27:02,762 INFO L226 Difference]: Without dead ends: 2148 [2023-12-22 00:27:02,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 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 00:27:02,768 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 42 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3062 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 00:27:02,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3062 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:27:02,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2023-12-22 00:27:02,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2146. [2023-12-22 00:27:02,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2146 states, 2144 states have (on average 1.6110074626865671) internal successors, (3454), 2145 states have internal predecessors, (3454), 0 states have call successors, (0), 0 states 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 00:27:02,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2146 states to 2146 states and 3454 transitions. [2023-12-22 00:27:02,848 INFO L78 Accepts]: Start accepts. Automaton has 2146 states and 3454 transitions. Word has length 61 [2023-12-22 00:27:02,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:27:02,848 INFO L495 AbstractCegarLoop]: Abstraction has 2146 states and 3454 transitions. [2023-12-22 00:27:02,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 00:27:02,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2146 states and 3454 transitions. [2023-12-22 00:27:02,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-22 00:27:02,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:27:02,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:27:02,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-22 00:27:03,053 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 00:27:03,054 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:27:03,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:27:03,054 INFO L85 PathProgramCache]: Analyzing trace with hash -687792901, now seen corresponding path program 1 times [2023-12-22 00:27:03,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:27:03,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526138148] [2023-12-22 00:27:03,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:27:03,055 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 00:27:03,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:27:03,070 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 00:27:03,096 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 00:27:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:27:03,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:27:03,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:27:03,323 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 00:27:03,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:27:03,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:27:03,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526138148] [2023-12-22 00:27:03,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526138148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:27:03,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:27:03,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 00:27:03,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835771778] [2023-12-22 00:27:03,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:27:03,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:27:03,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:27:03,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:27:03,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:27:03,325 INFO L87 Difference]: Start difference. First operand 2146 states and 3454 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:27:46,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:27:46,747 INFO L93 Difference]: Finished difference Result 3650 states and 6327 transitions. [2023-12-22 00:27:46,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:27:46,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-22 00:27:46,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:27:46,756 INFO L225 Difference]: With dead ends: 3650 [2023-12-22 00:27:46,757 INFO L226 Difference]: Without dead ends: 2897 [2023-12-22 00:27:46,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:27:46,759 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 825 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.2s IncrementalHoareTripleChecker+Time [2023-12-22 00:27:46,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 558 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 43.2s Time] [2023-12-22 00:27:46,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2023-12-22 00:27:46,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2897. [2023-12-22 00:27:46,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 2895 states have (on average 1.5312607944732297) internal successors, (4433), 2896 states have internal predecessors, (4433), 0 states have call successors, (0), 0 states 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 00:27:46,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 4433 transitions. [2023-12-22 00:27:46,813 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 4433 transitions. Word has length 62 [2023-12-22 00:27:46,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:27:46,813 INFO L495 AbstractCegarLoop]: Abstraction has 2897 states and 4433 transitions. [2023-12-22 00:27:46,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:27:46,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 4433 transitions. [2023-12-22 00:27:46,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-22 00:27:46,814 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:27:46,814 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:27:46,837 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 (12)] Ended with exit code 0 [2023-12-22 00:27:47,014 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 00:27:47,014 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:27:47,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:27:47,015 INFO L85 PathProgramCache]: Analyzing trace with hash 409837843, now seen corresponding path program 1 times [2023-12-22 00:27:47,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:27:47,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594224453] [2023-12-22 00:27:47,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:27:47,015 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:27:47,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:27:47,033 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 00:27:47,041 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 00:27:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:27:47,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 00:27:47,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:27:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:27:47,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:27:48,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:27:48,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:27:48,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594224453] [2023-12-22 00:27:48,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594224453] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:27:48,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:27:48,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 00:27:48,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593022424] [2023-12-22 00:27:48,332 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:27:48,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 00:27:48,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:27:48,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 00:27:48,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 00:27:48,333 INFO L87 Difference]: Start difference. First operand 2897 states and 4433 transitions. Second operand has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 00:27:50,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:27:50,996 INFO L93 Difference]: Finished difference Result 6471 states and 9562 transitions. [2023-12-22 00:27:50,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 00:27:50,997 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 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 63 [2023-12-22 00:27:50,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:27:51,010 INFO L225 Difference]: With dead ends: 6471 [2023-12-22 00:27:51,010 INFO L226 Difference]: Without dead ends: 5125 [2023-12-22 00:27:51,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-22 00:27:51,013 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 5101 mSDsluCounter, 12202 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5101 SdHoareTripleChecker+Valid, 13737 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-22 00:27:51,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5101 Valid, 13737 Invalid, 793 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-22 00:27:51,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5125 states. [2023-12-22 00:27:51,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5125 to 4241. [2023-12-22 00:27:51,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4241 states, 4239 states have (on average 1.5043642368483132) internal successors, (6377), 4240 states have internal predecessors, (6377), 0 states have call successors, (0), 0 states 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 00:27:51,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4241 states to 4241 states and 6377 transitions. [2023-12-22 00:27:51,109 INFO L78 Accepts]: Start accepts. Automaton has 4241 states and 6377 transitions. Word has length 63 [2023-12-22 00:27:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:27:51,110 INFO L495 AbstractCegarLoop]: Abstraction has 4241 states and 6377 transitions. [2023-12-22 00:27:51,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 00:27:51,120 INFO L276 IsEmpty]: Start isEmpty. Operand 4241 states and 6377 transitions. [2023-12-22 00:27:51,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-22 00:27:51,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:27:51,121 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] [2023-12-22 00:27:51,124 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 00:27:51,324 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 00:27:51,324 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:27:51,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:27:51,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1210551353, now seen corresponding path program 1 times [2023-12-22 00:27:51,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:27:51,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20366842] [2023-12-22 00:27:51,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:27:51,325 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 00:27:51,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:27:51,327 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 00:27:51,330 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 00:27:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:27:51,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:27:51,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:27:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:27:51,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:27:51,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:27:51,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20366842] [2023-12-22 00:27:51,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20366842] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:27:51,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:27:51,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:27:51,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750054276] [2023-12-22 00:27:51,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:27:51,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:27:51,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:27:51,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:27:51,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:27:51,437 INFO L87 Difference]: Start difference. First operand 4241 states and 6377 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 00:27:51,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:27:51,485 INFO L93 Difference]: Finished difference Result 5589 states and 8335 transitions. [2023-12-22 00:27:51,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:27:51,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-12-22 00:27:51,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:27:51,496 INFO L225 Difference]: With dead ends: 5589 [2023-12-22 00:27:51,496 INFO L226 Difference]: Without dead ends: 2899 [2023-12-22 00:27:51,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 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 00:27:51,500 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 36 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3047 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 00:27:51,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3047 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:27:51,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2023-12-22 00:27:51,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 2897. [2023-12-22 00:27:51,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 2895 states have (on average 1.518825561312608) internal successors, (4397), 2896 states have internal predecessors, (4397), 0 states have call successors, (0), 0 states 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 00:27:51,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 4397 transitions. [2023-12-22 00:27:51,554 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 4397 transitions. Word has length 65 [2023-12-22 00:27:51,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:27:51,554 INFO L495 AbstractCegarLoop]: Abstraction has 2897 states and 4397 transitions. [2023-12-22 00:27:51,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 00:27:51,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 4397 transitions. [2023-12-22 00:27:51,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-22 00:27:51,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:27:51,558 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:27:51,564 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 00:27:51,761 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 00:27:51,762 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:27:51,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:27:51,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1422952216, now seen corresponding path program 1 times [2023-12-22 00:27:51,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:27:51,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477329595] [2023-12-22 00:27:51,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:27:51,763 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 00:27:51,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:27:51,764 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 00:27:51,765 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 (15)] Waiting until timeout for monitored process [2023-12-22 00:27:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:27:51,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 00:27:51,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:27:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:27:52,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:27:53,044 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:27:53,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:27:53,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477329595] [2023-12-22 00:27:53,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477329595] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:27:53,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:27:53,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 00:27:53,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471222357] [2023-12-22 00:27:53,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:27:53,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 00:27:53,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:27:53,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 00:27:53,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 00:27:53,046 INFO L87 Difference]: Start difference. First operand 2897 states and 4397 transitions. Second operand has 16 states, 16 states have (on average 7.625) internal successors, (122), 16 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 00:27:54,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:27:54,485 INFO L93 Difference]: Finished difference Result 6625 states and 9681 transitions. [2023-12-22 00:27:54,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 00:27:54,485 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.625) internal successors, (122), 16 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-22 00:27:54,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:27:54,495 INFO L225 Difference]: With dead ends: 6625 [2023-12-22 00:27:54,495 INFO L226 Difference]: Without dead ends: 5279 [2023-12-22 00:27:54,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 00:27:54,499 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 5039 mSDsluCounter, 7663 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5039 SdHoareTripleChecker+Valid, 9224 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 00:27:54,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5039 Valid, 9224 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 00:27:54,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5279 states. [2023-12-22 00:27:54,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5279 to 4385. [2023-12-22 00:27:54,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4385 states, 4383 states have (on average 1.4713666438512434) internal successors, (6449), 4384 states have internal predecessors, (6449), 0 states have call successors, (0), 0 states 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 00:27:54,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 6449 transitions. [2023-12-22 00:27:54,596 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 6449 transitions. Word has length 66 [2023-12-22 00:27:54,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:27:54,596 INFO L495 AbstractCegarLoop]: Abstraction has 4385 states and 6449 transitions. [2023-12-22 00:27:54,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.625) internal successors, (122), 16 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 00:27:54,596 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 6449 transitions. [2023-12-22 00:27:54,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-22 00:27:54,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:27:54,597 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:27:54,616 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 00:27:54,801 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 00:27:54,801 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:27:54,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:27:54,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1352654888, now seen corresponding path program 1 times [2023-12-22 00:27:54,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:27:54,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514587190] [2023-12-22 00:27:54,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:27:54,802 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 00:27:54,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:27:54,803 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 00:27:54,804 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 00:27:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:27:54,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:27:54,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:27:54,951 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:27:54,951 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:27:54,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:27:54,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514587190] [2023-12-22 00:27:54,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514587190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:27:54,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:27:54,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:27:54,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32344058] [2023-12-22 00:27:54,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:27:54,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:27:54,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:27:54,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:27:54,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:27:54,953 INFO L87 Difference]: Start difference. First operand 4385 states and 6449 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:27:55,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:27:55,090 INFO L93 Difference]: Finished difference Result 5805 states and 8443 transitions. [2023-12-22 00:27:55,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:27:55,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-22 00:27:55,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:27:55,102 INFO L225 Difference]: With dead ends: 5805 [2023-12-22 00:27:55,102 INFO L226 Difference]: Without dead ends: 2971 [2023-12-22 00:27:55,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 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 00:27:55,111 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 32 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 3032 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 00:27:55,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 3032 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:27:55,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2023-12-22 00:27:55,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2969. [2023-12-22 00:27:55,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 2967 states have (on average 1.4941017863161443) internal successors, (4433), 2968 states have internal predecessors, (4433), 0 states have call successors, (0), 0 states 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 00:27:55,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 4433 transitions. [2023-12-22 00:27:55,175 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 4433 transitions. Word has length 68 [2023-12-22 00:27:55,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:27:55,176 INFO L495 AbstractCegarLoop]: Abstraction has 2969 states and 4433 transitions. [2023-12-22 00:27:55,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:27:55,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 4433 transitions. [2023-12-22 00:27:55,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-22 00:27:55,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:27:55,177 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:27:55,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-22 00:27:55,380 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 00:27:55,381 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:27:55,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:27:55,381 INFO L85 PathProgramCache]: Analyzing trace with hash 687053863, now seen corresponding path program 1 times [2023-12-22 00:27:55,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:27:55,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042489279] [2023-12-22 00:27:55,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:27:55,381 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 00:27:55,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:27:55,383 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 00:27:55,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-22 00:27:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:27:55,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 00:27:55,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:27:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:27:56,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:27:56,506 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:27:56,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:27:56,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042489279] [2023-12-22 00:27:56,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042489279] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:27:56,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:27:56,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 00:27:56,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435910384] [2023-12-22 00:27:56,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:27:56,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 00:27:56,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:27:56,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 00:27:56,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 00:27:56,507 INFO L87 Difference]: Start difference. First operand 2969 states and 4433 transitions. Second operand has 16 states, 16 states have (on average 8.125) internal successors, (130), 16 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:27:58,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:27:58,266 INFO L93 Difference]: Finished difference Result 6697 states and 9549 transitions. [2023-12-22 00:27:58,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 00:27:58,266 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.125) internal successors, (130), 16 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-22 00:27:58,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:27:58,274 INFO L225 Difference]: With dead ends: 6697 [2023-12-22 00:27:58,275 INFO L226 Difference]: Without dead ends: 5279 [2023-12-22 00:27:58,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 00:27:58,278 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 1817 mSDsluCounter, 15173 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 16716 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:27:58,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1817 Valid, 16716 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 00:27:58,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5279 states. [2023-12-22 00:27:58,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5279 to 4529. [2023-12-22 00:27:58,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4529 states, 4527 states have (on average 1.4404683013032913) internal successors, (6521), 4528 states have internal predecessors, (6521), 0 states have call successors, (0), 0 states 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 00:27:58,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4529 states to 4529 states and 6521 transitions. [2023-12-22 00:27:58,374 INFO L78 Accepts]: Start accepts. Automaton has 4529 states and 6521 transitions. Word has length 69 [2023-12-22 00:27:58,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:27:58,374 INFO L495 AbstractCegarLoop]: Abstraction has 4529 states and 6521 transitions. [2023-12-22 00:27:58,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.125) internal successors, (130), 16 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:27:58,375 INFO L276 IsEmpty]: Start isEmpty. Operand 4529 states and 6521 transitions. [2023-12-22 00:27:58,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-22 00:27:58,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:27:58,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:27:58,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-22 00:27:58,578 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 00:27:58,578 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:27:58,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:27:58,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1448819853, now seen corresponding path program 1 times [2023-12-22 00:27:58,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:27:58,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147281708] [2023-12-22 00:27:58,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:27:58,579 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 00:27:58,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:27:58,580 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 00:27:58,581 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 00:27:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:27:58,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:27:58,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:27:58,683 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:27:58,684 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:27:58,684 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:27:58,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147281708] [2023-12-22 00:27:58,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147281708] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:27:58,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:27:58,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:27:58,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377504194] [2023-12-22 00:27:58,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:27:58,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:27:58,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:27:58,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:27:58,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:27:58,685 INFO L87 Difference]: Start difference. First operand 4529 states and 6521 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:27:58,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:27:58,746 INFO L93 Difference]: Finished difference Result 5953 states and 8449 transitions. [2023-12-22 00:27:58,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:27:58,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-22 00:27:58,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:27:58,751 INFO L225 Difference]: With dead ends: 5953 [2023-12-22 00:27:58,751 INFO L226 Difference]: Without dead ends: 2975 [2023-12-22 00:27:58,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:27:58,755 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 28 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3017 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 00:27:58,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3017 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:27:58,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2023-12-22 00:27:58,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 2973. [2023-12-22 00:27:58,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2973 states, 2971 states have (on average 1.4702120498148772) internal successors, (4368), 2972 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states 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 00:27:58,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2973 states to 2973 states and 4368 transitions. [2023-12-22 00:27:58,853 INFO L78 Accepts]: Start accepts. Automaton has 2973 states and 4368 transitions. Word has length 71 [2023-12-22 00:27:58,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:27:58,854 INFO L495 AbstractCegarLoop]: Abstraction has 2973 states and 4368 transitions. [2023-12-22 00:27:58,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:27:58,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2973 states and 4368 transitions. [2023-12-22 00:27:58,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-22 00:27:58,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:27:58,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:27:58,860 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 00:27:59,058 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 00:27:59,058 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:27:59,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:27:59,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1405326612, now seen corresponding path program 1 times [2023-12-22 00:27:59,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:27:59,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277833708] [2023-12-22 00:27:59,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:27:59,059 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 00:27:59,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:27:59,060 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 00:27:59,061 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 00:27:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:27:59,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 00:27:59,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:27:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:27:59,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:28:00,247 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:00,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:28:00,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277833708] [2023-12-22 00:28:00,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277833708] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:28:00,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:28:00,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 00:28:00,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554389552] [2023-12-22 00:28:00,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:28:00,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 00:28:00,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:28:00,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 00:28:00,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 00:28:00,251 INFO L87 Difference]: Start difference. First operand 2973 states and 4368 transitions. Second operand has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 00:28:01,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:28:01,772 INFO L93 Difference]: Finished difference Result 5659 states and 7913 transitions. [2023-12-22 00:28:01,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-22 00:28:01,773 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 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 72 [2023-12-22 00:28:01,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:28:01,779 INFO L225 Difference]: With dead ends: 5659 [2023-12-22 00:28:01,779 INFO L226 Difference]: Without dead ends: 4237 [2023-12-22 00:28:01,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-22 00:28:01,781 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 1828 mSDsluCounter, 12107 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1828 SdHoareTripleChecker+Valid, 13632 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 00:28:01,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1828 Valid, 13632 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 00:28:01,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4237 states. [2023-12-22 00:28:01,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4237 to 3987. [2023-12-22 00:28:01,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3987 states, 3985 states have (on average 1.421831869510665) internal successors, (5666), 3986 states have internal predecessors, (5666), 0 states have call successors, (0), 0 states 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 00:28:01,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3987 states to 3987 states and 5666 transitions. [2023-12-22 00:28:01,866 INFO L78 Accepts]: Start accepts. Automaton has 3987 states and 5666 transitions. Word has length 72 [2023-12-22 00:28:01,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:28:01,866 INFO L495 AbstractCegarLoop]: Abstraction has 3987 states and 5666 transitions. [2023-12-22 00:28:01,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 00:28:01,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3987 states and 5666 transitions. [2023-12-22 00:28:01,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-22 00:28:01,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:28:01,867 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:28:01,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-22 00:28:02,090 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 00:28:02,091 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:28:02,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:28:02,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1485876804, now seen corresponding path program 1 times [2023-12-22 00:28:02,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:28:02,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77391576] [2023-12-22 00:28:02,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:28:02,092 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 00:28:02,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:28:02,093 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 00:28:02,095 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 00:28:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:28:02,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 00:28:02,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:28:02,279 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 00:28:02,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:28:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 00:28:02,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:28:02,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77391576] [2023-12-22 00:28:02,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77391576] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:28:02,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:28:02,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 00:28:02,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485227496] [2023-12-22 00:28:02,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:28:02,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 00:28:02,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:28:02,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 00:28:02,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:28:02,379 INFO L87 Difference]: Start difference. First operand 3987 states and 5666 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 00:28:02,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:28:02,665 INFO L93 Difference]: Finished difference Result 11003 states and 14708 transitions. [2023-12-22 00:28:02,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 00:28:02,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-22 00:28:02,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:28:02,679 INFO L225 Difference]: With dead ends: 11003 [2023-12-22 00:28:02,680 INFO L226 Difference]: Without dead ends: 8567 [2023-12-22 00:28:02,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 142 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 00:28:02,684 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 3027 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3027 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:28:02,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3027 Valid, 3192 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 00:28:02,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8567 states. [2023-12-22 00:28:02,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8567 to 8525. [2023-12-22 00:28:02,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8525 states, 8523 states have (on average 1.2950838906488327) internal successors, (11038), 8524 states have internal predecessors, (11038), 0 states have call successors, (0), 0 states 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 00:28:02,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8525 states to 8525 states and 11038 transitions. [2023-12-22 00:28:02,953 INFO L78 Accepts]: Start accepts. Automaton has 8525 states and 11038 transitions. Word has length 74 [2023-12-22 00:28:02,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:28:02,953 INFO L495 AbstractCegarLoop]: Abstraction has 8525 states and 11038 transitions. [2023-12-22 00:28:02,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 00:28:02,953 INFO L276 IsEmpty]: Start isEmpty. Operand 8525 states and 11038 transitions. [2023-12-22 00:28:02,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-22 00:28:02,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:28:02,956 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:02,959 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 00:28:03,159 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 00:28:03,159 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:28:03,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:28:03,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1397564488, now seen corresponding path program 1 times [2023-12-22 00:28:03,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:28:03,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782786035] [2023-12-22 00:28:03,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:28:03,160 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 00:28:03,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:28:03,162 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 00:28:03,163 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 00:28:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:28:03,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 00:28:03,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:28:04,720 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 38 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:04,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:28:05,470 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 38 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:05,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:28:05,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782786035] [2023-12-22 00:28:05,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782786035] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:28:05,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:28:05,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 00:28:05,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472260059] [2023-12-22 00:28:05,471 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:28:05,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 00:28:05,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:28:05,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 00:28:05,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 00:28:05,472 INFO L87 Difference]: Start difference. First operand 8525 states and 11038 transitions. Second operand has 26 states, 26 states have (on average 8.076923076923077) internal successors, (210), 25 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 00:28:07,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:28:07,923 INFO L93 Difference]: Finished difference Result 13227 states and 16889 transitions. [2023-12-22 00:28:07,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-22 00:28:07,924 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.076923076923077) internal successors, (210), 25 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 00:28:07,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:28:07,936 INFO L225 Difference]: With dead ends: 13227 [2023-12-22 00:28:07,936 INFO L226 Difference]: Without dead ends: 8631 [2023-12-22 00:28:07,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=383, Invalid=1423, Unknown=0, NotChecked=0, Total=1806 [2023-12-22 00:28:07,943 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 16574 mSDsluCounter, 7839 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16574 SdHoareTripleChecker+Valid, 9352 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:28:07,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16574 Valid, 9352 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 00:28:07,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8631 states. [2023-12-22 00:28:08,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8631 to 8525. [2023-12-22 00:28:08,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8525 states, 8523 states have (on average 1.2822949665610701) internal successors, (10929), 8524 states have internal predecessors, (10929), 0 states have call successors, (0), 0 states 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 00:28:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8525 states to 8525 states and 10929 transitions. [2023-12-22 00:28:08,232 INFO L78 Accepts]: Start accepts. Automaton has 8525 states and 10929 transitions. Word has length 115 [2023-12-22 00:28:08,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:28:08,232 INFO L495 AbstractCegarLoop]: Abstraction has 8525 states and 10929 transitions. [2023-12-22 00:28:08,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.076923076923077) internal successors, (210), 25 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 00:28:08,232 INFO L276 IsEmpty]: Start isEmpty. Operand 8525 states and 10929 transitions. [2023-12-22 00:28:08,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-22 00:28:08,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:28:08,235 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:08,239 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 00:28:08,439 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 00:28:08,439 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:28:08,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:28:08,440 INFO L85 PathProgramCache]: Analyzing trace with hash -778853267, now seen corresponding path program 1 times [2023-12-22 00:28:08,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:28:08,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033786740] [2023-12-22 00:28:08,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:28:08,440 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 00:28:08,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:28:08,441 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 00:28:08,442 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 00:28:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:28:08,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 00:28:08,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:28:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 30 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:09,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:28:10,380 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 30 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:10,380 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:28:10,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033786740] [2023-12-22 00:28:10,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033786740] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:28:10,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:28:10,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 00:28:10,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963271488] [2023-12-22 00:28:10,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:28:10,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 00:28:10,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:28:10,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 00:28:10,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 00:28:10,382 INFO L87 Difference]: Start difference. First operand 8525 states and 10929 transitions. Second operand has 26 states, 26 states have (on average 8.307692307692308) internal successors, (216), 25 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 00:28:12,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:28:12,814 INFO L93 Difference]: Finished difference Result 12401 states and 15728 transitions. [2023-12-22 00:28:12,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 00:28:12,815 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.307692307692308) internal successors, (216), 25 states have internal predecessors, (216), 0 states have call successors, (0), 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 116 [2023-12-22 00:28:12,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:28:12,826 INFO L225 Difference]: With dead ends: 12401 [2023-12-22 00:28:12,826 INFO L226 Difference]: Without dead ends: 9415 [2023-12-22 00:28:12,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=417, Invalid=1563, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 00:28:12,831 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 13481 mSDsluCounter, 7863 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13481 SdHoareTripleChecker+Valid, 9376 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:28:12,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13481 Valid, 9376 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 00:28:12,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9415 states. [2023-12-22 00:28:13,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9415 to 8525. [2023-12-22 00:28:13,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8525 states, 8523 states have (on average 1.2761938284641559) internal successors, (10877), 8524 states have internal predecessors, (10877), 0 states have call successors, (0), 0 states 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 00:28:13,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8525 states to 8525 states and 10877 transitions. [2023-12-22 00:28:13,135 INFO L78 Accepts]: Start accepts. Automaton has 8525 states and 10877 transitions. Word has length 116 [2023-12-22 00:28:13,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:28:13,135 INFO L495 AbstractCegarLoop]: Abstraction has 8525 states and 10877 transitions. [2023-12-22 00:28:13,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.307692307692308) internal successors, (216), 25 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 00:28:13,135 INFO L276 IsEmpty]: Start isEmpty. Operand 8525 states and 10877 transitions. [2023-12-22 00:28:13,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-22 00:28:13,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:28:13,138 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:13,142 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 (22)] Ended with exit code 0 [2023-12-22 00:28:13,342 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 00:28:13,342 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:28:13,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:28:13,343 INFO L85 PathProgramCache]: Analyzing trace with hash -889373208, now seen corresponding path program 1 times [2023-12-22 00:28:13,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:28:13,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493996547] [2023-12-22 00:28:13,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:28:13,343 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 00:28:13,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:28:13,344 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 00:28:13,345 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 00:28:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:28:13,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 00:28:13,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:28:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:14,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:28:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:15,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:28:15,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493996547] [2023-12-22 00:28:15,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493996547] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:28:15,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:28:15,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 00:28:15,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313390245] [2023-12-22 00:28:15,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:28:15,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 00:28:15,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:28:15,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 00:28:15,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 00:28:15,490 INFO L87 Difference]: Start difference. First operand 8525 states and 10877 transitions. Second operand has 26 states, 26 states have (on average 8.538461538461538) internal successors, (222), 25 states have internal predecessors, (222), 0 states have call successors, (0), 0 states 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 00:28:17,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:28:17,790 INFO L93 Difference]: Finished difference Result 11903 states and 15015 transitions. [2023-12-22 00:28:17,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 00:28:17,792 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.538461538461538) internal successors, (222), 25 states have internal predecessors, (222), 0 states have call successors, (0), 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 00:28:17,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:28:17,802 INFO L225 Difference]: With dead ends: 11903 [2023-12-22 00:28:17,802 INFO L226 Difference]: Without dead ends: 9043 [2023-12-22 00:28:17,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 00:28:17,805 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 13737 mSDsluCounter, 6341 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13737 SdHoareTripleChecker+Valid, 7854 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 00:28:17,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13737 Valid, 7854 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 00:28:17,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9043 states. [2023-12-22 00:28:18,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9043 to 8525. [2023-12-22 00:28:18,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8525 states, 8523 states have (on average 1.269858031209668) internal successors, (10823), 8524 states have internal predecessors, (10823), 0 states have call successors, (0), 0 states 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 00:28:18,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8525 states to 8525 states and 10823 transitions. [2023-12-22 00:28:18,129 INFO L78 Accepts]: Start accepts. Automaton has 8525 states and 10823 transitions. Word has length 117 [2023-12-22 00:28:18,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:28:18,129 INFO L495 AbstractCegarLoop]: Abstraction has 8525 states and 10823 transitions. [2023-12-22 00:28:18,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.538461538461538) internal successors, (222), 25 states have internal predecessors, (222), 0 states have call successors, (0), 0 states 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 00:28:18,130 INFO L276 IsEmpty]: Start isEmpty. Operand 8525 states and 10823 transitions. [2023-12-22 00:28:18,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-22 00:28:18,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:28:18,132 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:18,139 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 00:28:18,339 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 00:28:18,339 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:28:18,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:28:18,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1945344163, now seen corresponding path program 1 times [2023-12-22 00:28:18,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:28:18,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112503950] [2023-12-22 00:28:18,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:28:18,340 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 00:28:18,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:28:18,341 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 00:28:18,346 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 00:28:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:28:18,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 00:28:18,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:28:20,095 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 13 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:20,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:28:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 13 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:20,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:28:20,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112503950] [2023-12-22 00:28:20,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112503950] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:28:20,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:28:20,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 00:28:20,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814586997] [2023-12-22 00:28:20,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:28:20,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 00:28:20,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:28:20,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 00:28:20,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 00:28:20,890 INFO L87 Difference]: Start difference. First operand 8525 states and 10823 transitions. Second operand has 26 states, 26 states have (on average 8.846153846153847) internal successors, (230), 26 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 00:28:27,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:28:27,436 INFO L93 Difference]: Finished difference Result 13317 states and 16529 transitions. [2023-12-22 00:28:27,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-22 00:28:27,436 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.846153846153847) internal successors, (230), 26 states have internal predecessors, (230), 0 states have call successors, (0), 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 00:28:27,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:28:27,450 INFO L225 Difference]: With dead ends: 13317 [2023-12-22 00:28:27,450 INFO L226 Difference]: Without dead ends: 10031 [2023-12-22 00:28:27,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=760, Invalid=3796, Unknown=0, NotChecked=0, Total=4556 [2023-12-22 00:28:27,456 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 3549 mSDsluCounter, 21772 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3549 SdHoareTripleChecker+Valid, 23370 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-22 00:28:27,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3549 Valid, 23370 Invalid, 1814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-22 00:28:27,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10031 states. [2023-12-22 00:28:27,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10031 to 5903. [2023-12-22 00:28:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5903 states, 5901 states have (on average 1.298932384341637) internal successors, (7665), 5902 states have internal predecessors, (7665), 0 states have call successors, (0), 0 states 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 00:28:27,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5903 states to 5903 states and 7665 transitions. [2023-12-22 00:28:27,747 INFO L78 Accepts]: Start accepts. Automaton has 5903 states and 7665 transitions. Word has length 118 [2023-12-22 00:28:27,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:28:27,748 INFO L495 AbstractCegarLoop]: Abstraction has 5903 states and 7665 transitions. [2023-12-22 00:28:27,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.846153846153847) internal successors, (230), 26 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 00:28:27,748 INFO L276 IsEmpty]: Start isEmpty. Operand 5903 states and 7665 transitions. [2023-12-22 00:28:27,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-22 00:28:27,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:28:27,750 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:27,760 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 00:28:27,960 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 00:28:27,961 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:28:27,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:28:27,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1590638591, now seen corresponding path program 1 times [2023-12-22 00:28:27,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:28:27,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476210570] [2023-12-22 00:28:27,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:28:27,962 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 00:28:27,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:28:27,963 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 00:28:27,964 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 00:28:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:28:28,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 00:28:28,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:28:29,684 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:29,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:28:30,376 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:30,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:28:30,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476210570] [2023-12-22 00:28:30,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476210570] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:28:30,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:28:30,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 00:28:30,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113389105] [2023-12-22 00:28:30,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:28:30,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 00:28:30,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:28:30,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 00:28:30,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 00:28:30,378 INFO L87 Difference]: Start difference. First operand 5903 states and 7665 transitions. Second operand has 26 states, 26 states have (on average 8.653846153846153) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 00:28:36,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:28:36,509 INFO L93 Difference]: Finished difference Result 9171 states and 11601 transitions. [2023-12-22 00:28:36,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 00:28:36,510 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.653846153846153) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 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 00:28:36,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:28:36,518 INFO L225 Difference]: With dead ends: 9171 [2023-12-22 00:28:36,519 INFO L226 Difference]: Without dead ends: 8133 [2023-12-22 00:28:36,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 00:28:36,523 INFO L413 NwaCegarLoop]: 1612 mSDtfsCounter, 2153 mSDsluCounter, 18950 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2153 SdHoareTripleChecker+Valid, 20562 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:28:36,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2153 Valid, 20562 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-22 00:28:36,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8133 states. [2023-12-22 00:28:36,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8133 to 7021. [2023-12-22 00:28:36,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7021 states, 7019 states have (on average 1.2802393503348055) internal successors, (8986), 7020 states have internal predecessors, (8986), 0 states have call successors, (0), 0 states 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 00:28:36,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7021 states to 7021 states and 8986 transitions. [2023-12-22 00:28:36,843 INFO L78 Accepts]: Start accepts. Automaton has 7021 states and 8986 transitions. Word has length 118 [2023-12-22 00:28:36,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:28:36,843 INFO L495 AbstractCegarLoop]: Abstraction has 7021 states and 8986 transitions. [2023-12-22 00:28:36,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.653846153846153) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 00:28:36,843 INFO L276 IsEmpty]: Start isEmpty. Operand 7021 states and 8986 transitions. [2023-12-22 00:28:36,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-22 00:28:36,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:28:36,845 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:36,851 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 00:28:37,049 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 00:28:37,050 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:28:37,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:28:37,050 INFO L85 PathProgramCache]: Analyzing trace with hash 195243485, now seen corresponding path program 1 times [2023-12-22 00:28:37,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:28:37,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677295557] [2023-12-22 00:28:37,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:28:37,051 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 00:28:37,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:28:37,052 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 00:28:37,060 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 00:28:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:28:37,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 00:28:37,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:28:38,900 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 31 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:38,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:28:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 31 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:39,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:28:39,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677295557] [2023-12-22 00:28:39,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677295557] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:28:39,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:28:39,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 00:28:39,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815715641] [2023-12-22 00:28:39,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:28:39,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 00:28:39,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:28:39,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 00:28:39,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 00:28:39,499 INFO L87 Difference]: Start difference. First operand 7021 states and 8986 transitions. Second operand has 26 states, 26 states have (on average 8.461538461538462) internal successors, (220), 26 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 00:28:46,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:28:46,172 INFO L93 Difference]: Finished difference Result 11212 states and 13998 transitions. [2023-12-22 00:28:46,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-22 00:28:46,173 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.461538461538462) internal successors, (220), 26 states have internal predecessors, (220), 0 states have call successors, (0), 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 00:28:46,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:28:46,184 INFO L225 Difference]: With dead ends: 11212 [2023-12-22 00:28:46,185 INFO L226 Difference]: Without dead ends: 9802 [2023-12-22 00:28:46,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=881, Invalid=4089, Unknown=0, NotChecked=0, Total=4970 [2023-12-22 00:28:46,189 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 3545 mSDsluCounter, 20570 mSDsCounter, 0 mSdLazyCounter, 1938 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3545 SdHoareTripleChecker+Valid, 22189 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-22 00:28:46,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3545 Valid, 22189 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1938 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-22 00:28:46,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9802 states. [2023-12-22 00:28:46,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9802 to 8130. [2023-12-22 00:28:46,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8130 states, 8128 states have (on average 1.265132874015748) internal successors, (10283), 8129 states have internal predecessors, (10283), 0 states have call successors, (0), 0 states 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 00:28:46,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8130 states to 8130 states and 10283 transitions. [2023-12-22 00:28:46,580 INFO L78 Accepts]: Start accepts. Automaton has 8130 states and 10283 transitions. Word has length 118 [2023-12-22 00:28:46,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:28:46,580 INFO L495 AbstractCegarLoop]: Abstraction has 8130 states and 10283 transitions. [2023-12-22 00:28:46,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.461538461538462) internal successors, (220), 26 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 00:28:46,581 INFO L276 IsEmpty]: Start isEmpty. Operand 8130 states and 10283 transitions. [2023-12-22 00:28:46,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-22 00:28:46,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:28:46,582 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:46,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-22 00:28:46,786 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 00:28:46,786 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:28:46,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:28:46,787 INFO L85 PathProgramCache]: Analyzing trace with hash 693244289, now seen corresponding path program 1 times [2023-12-22 00:28:46,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:28:46,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707871064] [2023-12-22 00:28:46,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:28:46,787 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 00:28:46,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:28:46,788 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 00:28:46,789 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 00:28:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:28:46,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 00:28:46,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:28:48,252 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 40 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:48,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:28:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 40 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:48,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:28:48,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707871064] [2023-12-22 00:28:48,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707871064] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:28:48,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:28:48,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 00:28:48,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482632613] [2023-12-22 00:28:48,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:28:48,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 00:28:48,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:28:48,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 00:28:48,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 00:28:48,905 INFO L87 Difference]: Start difference. First operand 8130 states and 10283 transitions. Second operand has 26 states, 26 states have (on average 8.26923076923077) internal successors, (215), 26 states have internal predecessors, (215), 0 states have call successors, (0), 0 states 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 00:28:56,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:28:56,181 INFO L93 Difference]: Finished difference Result 20239 states and 24432 transitions. [2023-12-22 00:28:56,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-22 00:28:56,182 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.26923076923077) internal successors, (215), 26 states have internal predecessors, (215), 0 states have call successors, (0), 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 00:28:56,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:28:56,195 INFO L225 Difference]: With dead ends: 20239 [2023-12-22 00:28:56,195 INFO L226 Difference]: Without dead ends: 18247 [2023-12-22 00:28:56,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1011, Invalid=4995, Unknown=0, NotChecked=0, Total=6006 [2023-12-22 00:28:56,199 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 3414 mSDsluCounter, 23834 mSDsCounter, 0 mSdLazyCounter, 2376 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3414 SdHoareTripleChecker+Valid, 25470 SdHoareTripleChecker+Invalid, 2394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-22 00:28:56,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3414 Valid, 25470 Invalid, 2394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2376 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-22 00:28:56,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18247 states. [2023-12-22 00:28:56,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18247 to 14001. [2023-12-22 00:28:56,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14001 states, 13999 states have (on average 1.2229444960354312) internal successors, (17120), 14000 states have internal predecessors, (17120), 0 states have call successors, (0), 0 states 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 00:28:56,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14001 states to 14001 states and 17120 transitions. [2023-12-22 00:28:56,934 INFO L78 Accepts]: Start accepts. Automaton has 14001 states and 17120 transitions. Word has length 118 [2023-12-22 00:28:56,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:28:56,934 INFO L495 AbstractCegarLoop]: Abstraction has 14001 states and 17120 transitions. [2023-12-22 00:28:56,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.26923076923077) internal successors, (215), 26 states have internal predecessors, (215), 0 states have call successors, (0), 0 states 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 00:28:56,934 INFO L276 IsEmpty]: Start isEmpty. Operand 14001 states and 17120 transitions. [2023-12-22 00:28:56,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-22 00:28:56,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:28:56,938 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:28:56,942 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 00:28:57,142 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 00:28:57,143 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:28:57,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:28:57,143 INFO L85 PathProgramCache]: Analyzing trace with hash -88787539, now seen corresponding path program 1 times [2023-12-22 00:28:57,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:28:57,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64048979] [2023-12-22 00:28:57,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:28:57,144 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 00:28:57,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:28:57,145 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 00:28:57,146 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 (28)] Waiting until timeout for monitored process [2023-12-22 00:28:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:28:57,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:28:57,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:28:57,334 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:57,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:28:57,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:28:57,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64048979] [2023-12-22 00:28:57,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64048979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:28:57,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:28:57,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 00:28:57,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599935681] [2023-12-22 00:28:57,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:28:57,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:28:57,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:28:57,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:28:57,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:28:57,336 INFO L87 Difference]: Start difference. First operand 14001 states and 17120 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:29:37,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:29:37,738 INFO L93 Difference]: Finished difference Result 17007 states and 21951 transitions. [2023-12-22 00:29:37,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:29:37,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-22 00:29:37,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:29:37,751 INFO L225 Difference]: With dead ends: 17007 [2023-12-22 00:29:37,752 INFO L226 Difference]: Without dead ends: 15503 [2023-12-22 00:29:37,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 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 00:29:37,755 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 783 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 3007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.5s IncrementalHoareTripleChecker+Time [2023-12-22 00:29:37,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 694 Invalid, 3007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 39.5s Time] [2023-12-22 00:29:37,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15503 states. [2023-12-22 00:29:38,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15503 to 15503. [2023-12-22 00:29:38,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15503 states, 15501 states have (on average 1.2249532288239469) internal successors, (18988), 15502 states have internal predecessors, (18988), 0 states have call successors, (0), 0 states 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 00:29:38,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15503 states to 15503 states and 18988 transitions. [2023-12-22 00:29:38,464 INFO L78 Accepts]: Start accepts. Automaton has 15503 states and 18988 transitions. Word has length 130 [2023-12-22 00:29:38,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:29:38,464 INFO L495 AbstractCegarLoop]: Abstraction has 15503 states and 18988 transitions. [2023-12-22 00:29:38,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:29:38,464 INFO L276 IsEmpty]: Start isEmpty. Operand 15503 states and 18988 transitions. [2023-12-22 00:29:38,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-22 00:29:38,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:29:38,469 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:29:38,476 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 00:29:38,672 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 00:29:38,672 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:29:38,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:29:38,673 INFO L85 PathProgramCache]: Analyzing trace with hash 263393983, now seen corresponding path program 1 times [2023-12-22 00:29:38,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:29:38,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297461204] [2023-12-22 00:29:38,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:29:38,673 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 00:29:38,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:29:38,674 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 00:29:38,675 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 00:29:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:29:38,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:29:38,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:29:38,845 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:29:38,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:29:38,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:29:38,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297461204] [2023-12-22 00:29:38,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297461204] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:29:38,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:29:38,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 00:29:38,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76160016] [2023-12-22 00:29:38,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:29:38,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:29:38,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:29:38,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:29:38,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:29:38,846 INFO L87 Difference]: Start difference. First operand 15503 states and 18988 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 00:30:19,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:30:19,062 INFO L93 Difference]: Finished difference Result 21515 states and 27556 transitions. [2023-12-22 00:30:19,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:30:19,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2023-12-22 00:30:19,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:30:19,078 INFO L225 Difference]: With dead ends: 21515 [2023-12-22 00:30:19,078 INFO L226 Difference]: Without dead ends: 18509 [2023-12-22 00:30:19,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 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 00:30:19,083 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 998 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.4s IncrementalHoareTripleChecker+Time [2023-12-22 00:30:19,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 662 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2598 Invalid, 0 Unknown, 0 Unchecked, 39.4s Time] [2023-12-22 00:30:19,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18509 states. [2023-12-22 00:30:19,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18509 to 18507. [2023-12-22 00:30:19,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18507 states, 18505 states have (on average 1.2261010537692516) internal successors, (22689), 18506 states have internal predecessors, (22689), 0 states have call successors, (0), 0 states 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 00:30:19,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18507 states to 18507 states and 22689 transitions. [2023-12-22 00:30:19,816 INFO L78 Accepts]: Start accepts. Automaton has 18507 states and 22689 transitions. Word has length 137 [2023-12-22 00:30:19,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:30:19,817 INFO L495 AbstractCegarLoop]: Abstraction has 18507 states and 22689 transitions. [2023-12-22 00:30:19,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 00:30:19,817 INFO L276 IsEmpty]: Start isEmpty. Operand 18507 states and 22689 transitions. [2023-12-22 00:30:19,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-22 00:30:19,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:30:19,823 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:30:19,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-22 00:30:20,023 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 00:30:20,023 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:30:20,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:30:20,024 INFO L85 PathProgramCache]: Analyzing trace with hash 841893390, now seen corresponding path program 2 times [2023-12-22 00:30:20,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:30:20,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679211562] [2023-12-22 00:30:20,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 00:30:20,024 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 00:30:20,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:30:20,025 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 00:30:20,026 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 00:30:20,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 00:30:20,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 00:30:20,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 00:30:20,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:30:21,052 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-22 00:30:21,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:30:21,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:30:21,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679211562] [2023-12-22 00:30:21,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679211562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:30:21,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:30:21,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 00:30:21,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335298517] [2023-12-22 00:30:21,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:30:21,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 00:30:21,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:30:21,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 00:30:21,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:30:21,054 INFO L87 Difference]: Start difference. First operand 18507 states and 22689 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 00:30:21,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:30:21,871 INFO L93 Difference]: Finished difference Result 22594 states and 27758 transitions. [2023-12-22 00:30:21,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 00:30:21,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 164 [2023-12-22 00:30:21,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:30:21,892 INFO L225 Difference]: With dead ends: 22594 [2023-12-22 00:30:21,892 INFO L226 Difference]: Without dead ends: 19673 [2023-12-22 00:30:21,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:30:21,896 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 1660 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1660 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:30:21,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1660 Valid, 3220 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 00:30:21,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19673 states. [2023-12-22 00:30:22,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19673 to 18455. [2023-12-22 00:30:22,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18455 states, 18453 states have (on average 1.2196932748062645) internal successors, (22507), 18454 states have internal predecessors, (22507), 0 states have call successors, (0), 0 states 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 00:30:22,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18455 states to 18455 states and 22507 transitions. [2023-12-22 00:30:22,677 INFO L78 Accepts]: Start accepts. Automaton has 18455 states and 22507 transitions. Word has length 164 [2023-12-22 00:30:22,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:30:22,677 INFO L495 AbstractCegarLoop]: Abstraction has 18455 states and 22507 transitions. [2023-12-22 00:30:22,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 00:30:22,678 INFO L276 IsEmpty]: Start isEmpty. Operand 18455 states and 22507 transitions. [2023-12-22 00:30:22,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-22 00:30:22,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:30:22,683 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:30:22,687 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 00:30:22,884 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 00:30:22,884 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:30:22,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:30:22,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1196598962, now seen corresponding path program 2 times [2023-12-22 00:30:22,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:30:22,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189730588] [2023-12-22 00:30:22,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 00:30:22,885 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 00:30:22,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:30:22,886 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 00:30:22,887 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 00:30:22,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 00:30:22,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 00:30:22,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 00:30:22,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:30:24,203 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-22 00:30:24,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:30:24,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:30:24,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189730588] [2023-12-22 00:30:24,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189730588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:30:24,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:30:24,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 00:30:24,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197345669] [2023-12-22 00:30:24,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:30:24,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 00:30:24,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:30:24,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 00:30:24,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:30:24,205 INFO L87 Difference]: Start difference. First operand 18455 states and 22507 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:30:25,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:30:25,231 INFO L93 Difference]: Finished difference Result 21180 states and 25944 transitions. [2023-12-22 00:30:25,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 00:30:25,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2023-12-22 00:30:25,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:30:25,254 INFO L225 Difference]: With dead ends: 21180 [2023-12-22 00:30:25,254 INFO L226 Difference]: Without dead ends: 20037 [2023-12-22 00:30:25,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:30:25,259 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 3046 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3046 SdHoareTripleChecker+Valid, 3227 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:30:25,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3046 Valid, 3227 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 00:30:25,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20037 states. [2023-12-22 00:30:26,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20037 to 19234. [2023-12-22 00:30:26,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19234 states, 19232 states have (on average 1.2159421797004992) internal successors, (23385), 19233 states have internal predecessors, (23385), 0 states have call successors, (0), 0 states 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 00:30:26,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19234 states to 19234 states and 23385 transitions. [2023-12-22 00:30:26,166 INFO L78 Accepts]: Start accepts. Automaton has 19234 states and 23385 transitions. Word has length 164 [2023-12-22 00:30:26,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:30:26,167 INFO L495 AbstractCegarLoop]: Abstraction has 19234 states and 23385 transitions. [2023-12-22 00:30:26,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:30:26,167 INFO L276 IsEmpty]: Start isEmpty. Operand 19234 states and 23385 transitions. [2023-12-22 00:30:26,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-22 00:30:26,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:30:26,174 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:30:26,183 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 (31)] Ended with exit code 0 [2023-12-22 00:30:26,377 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 00:30:26,377 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:30:26,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:30:26,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1312486258, now seen corresponding path program 2 times [2023-12-22 00:30:26,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:30:26,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697161719] [2023-12-22 00:30:26,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 00:30:26,378 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 00:30:26,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:30:26,379 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 00:30:26,380 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 00:30:26,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 00:30:26,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 00:30:26,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 00:30:26,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:30:27,700 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-12-22 00:30:27,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:30:27,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:30:27,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697161719] [2023-12-22 00:30:27,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697161719] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:30:27,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:30:27,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 00:30:27,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852126486] [2023-12-22 00:30:27,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:30:27,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 00:30:27,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:30:27,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 00:30:27,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:30:27,702 INFO L87 Difference]: Start difference. First operand 19234 states and 23385 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 00:30:28,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:30:28,725 INFO L93 Difference]: Finished difference Result 21777 states and 26592 transitions. [2023-12-22 00:30:28,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 00:30:28,726 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 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 164 [2023-12-22 00:30:28,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:30:28,749 INFO L225 Difference]: With dead ends: 21777 [2023-12-22 00:30:28,749 INFO L226 Difference]: Without dead ends: 20620 [2023-12-22 00:30:28,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:30:28,756 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 4492 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4492 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:30:28,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4492 Valid, 3223 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 00:30:28,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20620 states. [2023-12-22 00:30:29,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20620 to 20066. [2023-12-22 00:30:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20066 states, 20064 states have (on average 1.21247009569378) internal successors, (24327), 20065 states have internal predecessors, (24327), 0 states have call successors, (0), 0 states 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 00:30:29,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20066 states to 20066 states and 24327 transitions. [2023-12-22 00:30:29,884 INFO L78 Accepts]: Start accepts. Automaton has 20066 states and 24327 transitions. Word has length 164 [2023-12-22 00:30:29,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:30:29,884 INFO L495 AbstractCegarLoop]: Abstraction has 20066 states and 24327 transitions. [2023-12-22 00:30:29,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 00:30:29,884 INFO L276 IsEmpty]: Start isEmpty. Operand 20066 states and 24327 transitions. [2023-12-22 00:30:29,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-22 00:30:29,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:30:29,892 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:30:29,895 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 00:30:30,092 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 00:30:30,092 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:30:30,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:30:30,093 INFO L85 PathProgramCache]: Analyzing trace with hash -814485454, now seen corresponding path program 2 times [2023-12-22 00:30:30,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:30:30,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43257913] [2023-12-22 00:30:30,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 00:30:30,093 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 00:30:30,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:30:30,094 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 00:30:30,096 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 00:30:30,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 00:30:30,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 00:30:30,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 00:30:30,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:30:31,163 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-12-22 00:30:31,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:30:31,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:30:31,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43257913] [2023-12-22 00:30:31,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43257913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:30:31,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:30:31,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 00:30:31,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024266383] [2023-12-22 00:30:31,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:30:31,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 00:30:31,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:30:31,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 00:30:31,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:30:31,164 INFO L87 Difference]: Start difference. First operand 20066 states and 24327 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 00:30:32,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:30:32,028 INFO L93 Difference]: Finished difference Result 22651 states and 27583 transitions. [2023-12-22 00:30:32,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 00:30:32,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 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 164 [2023-12-22 00:30:32,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:30:32,051 INFO L225 Difference]: With dead ends: 22651 [2023-12-22 00:30:32,051 INFO L226 Difference]: Without dead ends: 21464 [2023-12-22 00:30:32,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:30:32,058 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 3043 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:30:32,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3220 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 00:30:32,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21464 states. [2023-12-22 00:30:33,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21464 to 20910. [2023-12-22 00:30:33,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20910 states, 20908 states have (on average 1.2092500478285824) internal successors, (25283), 20909 states have internal predecessors, (25283), 0 states have call successors, (0), 0 states 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 00:30:33,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20910 states to 20910 states and 25283 transitions. [2023-12-22 00:30:33,121 INFO L78 Accepts]: Start accepts. Automaton has 20910 states and 25283 transitions. Word has length 164 [2023-12-22 00:30:33,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:30:33,121 INFO L495 AbstractCegarLoop]: Abstraction has 20910 states and 25283 transitions. [2023-12-22 00:30:33,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 00:30:33,121 INFO L276 IsEmpty]: Start isEmpty. Operand 20910 states and 25283 transitions. [2023-12-22 00:30:33,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-22 00:30:33,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:30:33,128 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 00:30:33,133 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 00:30:33,329 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 00:30:33,329 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:30:33,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:30:33,329 INFO L85 PathProgramCache]: Analyzing trace with hash -276146995, now seen corresponding path program 1 times [2023-12-22 00:30:33,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:30:33,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444584599] [2023-12-22 00:30:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:30:33,330 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 00:30:33,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:30:33,331 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 00:30:33,332 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 00:30:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:30:33,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-22 00:30:33,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:30:35,528 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 38 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:30:35,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:30:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 38 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:30:36,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:30:36,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444584599] [2023-12-22 00:30:36,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444584599] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:30:36,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:30:36,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-22 00:30:36,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808790472] [2023-12-22 00:30:36,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:30:36,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-22 00:30:36,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:30:36,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-22 00:30:36,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-22 00:30:36,608 INFO L87 Difference]: Start difference. First operand 20910 states and 25283 transitions. Second operand has 36 states, 36 states have (on average 8.833333333333334) internal successors, (318), 36 states have internal predecessors, (318), 0 states have call successors, (0), 0 states 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 00:30:56,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:30:56,898 INFO L93 Difference]: Finished difference Result 25829 states and 31048 transitions. [2023-12-22 00:30:56,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-22 00:30:56,899 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 8.833333333333334) internal successors, (318), 36 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2023-12-22 00:30:56,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:30:56,922 INFO L225 Difference]: With dead ends: 25829 [2023-12-22 00:30:56,922 INFO L226 Difference]: Without dead ends: 23777 [2023-12-22 00:30:56,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4488 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=2331, Invalid=14961, Unknown=0, NotChecked=0, Total=17292 [2023-12-22 00:30:56,932 INFO L413 NwaCegarLoop]: 1702 mSDtfsCounter, 3827 mSDsluCounter, 36109 mSDsCounter, 0 mSdLazyCounter, 5692 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3827 SdHoareTripleChecker+Valid, 37811 SdHoareTripleChecker+Invalid, 5718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 5692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:30:56,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3827 Valid, 37811 Invalid, 5718 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 5692 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-12-22 00:30:56,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23777 states. [2023-12-22 00:30:57,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23777 to 14247. [2023-12-22 00:30:57,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14247 states, 14245 states have (on average 1.2341172341172342) internal successors, (17580), 14246 states have internal predecessors, (17580), 0 states have call successors, (0), 0 states 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 00:30:57,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14247 states to 14247 states and 17580 transitions. [2023-12-22 00:30:57,600 INFO L78 Accepts]: Start accepts. Automaton has 14247 states and 17580 transitions. Word has length 165 [2023-12-22 00:30:57,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:30:57,601 INFO L495 AbstractCegarLoop]: Abstraction has 14247 states and 17580 transitions. [2023-12-22 00:30:57,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 8.833333333333334) internal successors, (318), 36 states have internal predecessors, (318), 0 states have call successors, (0), 0 states 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 00:30:57,601 INFO L276 IsEmpty]: Start isEmpty. Operand 14247 states and 17580 transitions. [2023-12-22 00:30:57,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-22 00:30:57,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:30:57,604 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 00:30:57,612 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 (34)] Forceful destruction successful, exit code 0 [2023-12-22 00:30:57,804 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 00:30:57,804 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:30:57,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:30:57,805 INFO L85 PathProgramCache]: Analyzing trace with hash -748377487, now seen corresponding path program 1 times [2023-12-22 00:30:57,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:30:57,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265157392] [2023-12-22 00:30:57,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:30:57,805 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 00:30:57,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:30:57,806 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 00:30:57,809 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 00:30:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:30:57,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-22 00:30:57,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:30:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 54 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:30:59,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:31:00,856 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 54 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:31:00,856 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:31:00,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265157392] [2023-12-22 00:31:00,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265157392] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:31:00,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:31:00,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-22 00:31:00,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724250312] [2023-12-22 00:31:00,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:31:00,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-22 00:31:00,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:31:00,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-22 00:31:00,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-22 00:31:00,858 INFO L87 Difference]: Start difference. First operand 14247 states and 17580 transitions. Second operand has 36 states, 36 states have (on average 8.694444444444445) internal successors, (313), 36 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 00:31:24,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:31:24,688 INFO L93 Difference]: Finished difference Result 18846 states and 22951 transitions. [2023-12-22 00:31:24,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2023-12-22 00:31:24,689 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 8.694444444444445) internal successors, (313), 36 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2023-12-22 00:31:24,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:31:24,708 INFO L225 Difference]: With dead ends: 18846 [2023-12-22 00:31:24,708 INFO L226 Difference]: Without dead ends: 16775 [2023-12-22 00:31:24,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6241 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=2857, Invalid=19195, Unknown=0, NotChecked=0, Total=22052 [2023-12-22 00:31:24,716 INFO L413 NwaCegarLoop]: 1727 mSDtfsCounter, 5470 mSDsluCounter, 34776 mSDsCounter, 0 mSdLazyCounter, 5741 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5470 SdHoareTripleChecker+Valid, 36503 SdHoareTripleChecker+Invalid, 5775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 5741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:31:24,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5470 Valid, 36503 Invalid, 5775 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 5741 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-12-22 00:31:24,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16775 states. [2023-12-22 00:31:25,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16775 to 14697. [2023-12-22 00:31:25,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14697 states, 14695 states have (on average 1.230962912555291) internal successors, (18089), 14696 states have internal predecessors, (18089), 0 states have call successors, (0), 0 states 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 00:31:25,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14697 states to 14697 states and 18089 transitions. [2023-12-22 00:31:25,540 INFO L78 Accepts]: Start accepts. Automaton has 14697 states and 18089 transitions. Word has length 165 [2023-12-22 00:31:25,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:31:25,540 INFO L495 AbstractCegarLoop]: Abstraction has 14697 states and 18089 transitions. [2023-12-22 00:31:25,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 8.694444444444445) internal successors, (313), 36 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 00:31:25,541 INFO L276 IsEmpty]: Start isEmpty. Operand 14697 states and 18089 transitions. [2023-12-22 00:31:25,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-22 00:31:25,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:31:25,544 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 00:31:25,551 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 00:31:25,744 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 00:31:25,745 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:31:25,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:31:25,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1804745549, now seen corresponding path program 1 times [2023-12-22 00:31:25,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:31:25,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899931344] [2023-12-22 00:31:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:31:25,746 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 00:31:25,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:31:25,747 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 00:31:25,748 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 00:31:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:31:25,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-22 00:31:25,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:31:28,397 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 70 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:31:28,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:31:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 70 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:31:29,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:31:29,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899931344] [2023-12-22 00:31:29,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899931344] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:31:29,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:31:29,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-22 00:31:29,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287167765] [2023-12-22 00:31:29,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:31:29,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-22 00:31:29,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:31:29,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-22 00:31:29,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-22 00:31:29,571 INFO L87 Difference]: Start difference. First operand 14697 states and 18089 transitions. Second operand has 36 states, 36 states have (on average 8.555555555555555) internal successors, (308), 36 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 00:31:56,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:31:56,586 INFO L93 Difference]: Finished difference Result 19689 states and 23867 transitions. [2023-12-22 00:31:56,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-12-22 00:31:56,587 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 8.555555555555555) internal successors, (308), 36 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2023-12-22 00:31:56,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:31:56,609 INFO L225 Difference]: With dead ends: 19689 [2023-12-22 00:31:56,610 INFO L226 Difference]: Without dead ends: 17574 [2023-12-22 00:31:56,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6978 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=3125, Invalid=21367, Unknown=0, NotChecked=0, Total=24492 [2023-12-22 00:31:56,619 INFO L413 NwaCegarLoop]: 1743 mSDtfsCounter, 4054 mSDsluCounter, 38855 mSDsCounter, 0 mSdLazyCounter, 7488 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4054 SdHoareTripleChecker+Valid, 40598 SdHoareTripleChecker+Invalid, 7519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 7488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:31:56,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4054 Valid, 40598 Invalid, 7519 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 7488 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2023-12-22 00:31:56,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17574 states. [2023-12-22 00:31:57,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17574 to 14922. [2023-12-22 00:31:57,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14922 states, 14920 states have (on average 1.2289544235924934) internal successors, (18336), 14921 states have internal predecessors, (18336), 0 states have call successors, (0), 0 states 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 00:31:57,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14922 states to 14922 states and 18336 transitions. [2023-12-22 00:31:57,418 INFO L78 Accepts]: Start accepts. Automaton has 14922 states and 18336 transitions. Word has length 165 [2023-12-22 00:31:57,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:31:57,418 INFO L495 AbstractCegarLoop]: Abstraction has 14922 states and 18336 transitions. [2023-12-22 00:31:57,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 8.555555555555555) internal successors, (308), 36 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 00:31:57,418 INFO L276 IsEmpty]: Start isEmpty. Operand 14922 states and 18336 transitions. [2023-12-22 00:31:57,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-22 00:31:57,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:31:57,422 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:31:57,430 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 00:31:57,622 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 00:31:57,622 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:31:57,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:31:57,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1484230582, now seen corresponding path program 1 times [2023-12-22 00:31:57,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:31:57,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740113553] [2023-12-22 00:31:57,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:31:57,623 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 00:31:57,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:31:57,624 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 00:31:57,626 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 00:31:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:31:57,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-22 00:31:57,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:32:00,584 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 32 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:32:00,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:32:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 32 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:32:01,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:32:01,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740113553] [2023-12-22 00:32:01,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740113553] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:32:01,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:32:01,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-22 00:32:01,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419318869] [2023-12-22 00:32:01,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:32:01,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-22 00:32:01,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:32:01,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-22 00:32:01,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-22 00:32:01,794 INFO L87 Difference]: Start difference. First operand 14922 states and 18336 transitions. Second operand has 36 states, 36 states have (on average 9.0) internal successors, (324), 36 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 00:32:23,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:32:23,062 INFO L93 Difference]: Finished difference Result 28101 states and 33533 transitions. [2023-12-22 00:32:23,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-22 00:32:23,062 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 9.0) internal successors, (324), 36 states have internal predecessors, (324), 0 states have call successors, (0), 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 166 [2023-12-22 00:32:23,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:32:23,094 INFO L225 Difference]: With dead ends: 28101 [2023-12-22 00:32:23,094 INFO L226 Difference]: Without dead ends: 26151 [2023-12-22 00:32:23,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4172 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=2091, Invalid=14165, Unknown=0, NotChecked=0, Total=16256 [2023-12-22 00:32:23,102 INFO L413 NwaCegarLoop]: 1700 mSDtfsCounter, 5371 mSDsluCounter, 32810 mSDsCounter, 0 mSdLazyCounter, 5128 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5371 SdHoareTripleChecker+Valid, 34510 SdHoareTripleChecker+Invalid, 5149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 5128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-22 00:32:23,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5371 Valid, 34510 Invalid, 5149 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 5128 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-22 00:32:23,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26151 states. [2023-12-22 00:32:24,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26151 to 23765. [2023-12-22 00:32:24,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23765 states, 23763 states have (on average 1.1998905862054454) internal successors, (28513), 23764 states have internal predecessors, (28513), 0 states have call successors, (0), 0 states 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 00:32:24,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23765 states to 23765 states and 28513 transitions. [2023-12-22 00:32:24,623 INFO L78 Accepts]: Start accepts. Automaton has 23765 states and 28513 transitions. Word has length 166 [2023-12-22 00:32:24,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:32:24,623 INFO L495 AbstractCegarLoop]: Abstraction has 23765 states and 28513 transitions. [2023-12-22 00:32:24,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 9.0) internal successors, (324), 36 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 00:32:24,623 INFO L276 IsEmpty]: Start isEmpty. Operand 23765 states and 28513 transitions. [2023-12-22 00:32:24,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-22 00:32:24,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:32:24,630 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:32:24,636 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 00:32:24,830 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 00:32:24,831 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:32:24,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:32:24,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2102866378, now seen corresponding path program 1 times [2023-12-22 00:32:24,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:32:24,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598898709] [2023-12-22 00:32:24,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:32:24,832 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 00:32:24,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:32:24,833 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 00:32:24,833 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 00:32:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:32:24,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:32:24,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:32:25,068 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:32:25,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:32:25,068 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:32:25,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598898709] [2023-12-22 00:32:25,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598898709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:32:25,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:32:25,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 00:32:25,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824182797] [2023-12-22 00:32:25,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:32:25,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:32:25,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:32:25,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:32:25,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:32:25,070 INFO L87 Difference]: Start difference. First operand 23765 states and 28513 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 00:33:11,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:33:11,622 INFO L93 Difference]: Finished difference Result 35032 states and 43611 transitions. [2023-12-22 00:33:11,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:33:11,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2023-12-22 00:33:11,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:33:11,657 INFO L225 Difference]: With dead ends: 35032 [2023-12-22 00:33:11,657 INFO L226 Difference]: Without dead ends: 29022 [2023-12-22 00:33:11,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:33:11,667 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 732 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:33:11,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 741 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [662 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 45.0s Time] [2023-12-22 00:33:11,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29022 states. [2023-12-22 00:33:13,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29022 to 28271. [2023-12-22 00:33:13,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28271 states, 28269 states have (on average 1.1809756270119212) internal successors, (33385), 28270 states have internal predecessors, (33385), 0 states have call successors, (0), 0 states 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 00:33:13,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28271 states to 28271 states and 33385 transitions. [2023-12-22 00:33:13,323 INFO L78 Accepts]: Start accepts. Automaton has 28271 states and 33385 transitions. Word has length 171 [2023-12-22 00:33:13,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:33:13,323 INFO L495 AbstractCegarLoop]: Abstraction has 28271 states and 33385 transitions. [2023-12-22 00:33:13,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 00:33:13,323 INFO L276 IsEmpty]: Start isEmpty. Operand 28271 states and 33385 transitions. [2023-12-22 00:33:13,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-22 00:33:13,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:33:13,333 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, 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 00:33:13,339 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 (38)] Forceful destruction successful, exit code 0 [2023-12-22 00:33:13,534 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 00:33:13,534 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:33:13,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:33:13,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2096828817, now seen corresponding path program 1 times [2023-12-22 00:33:13,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:33:13,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422377377] [2023-12-22 00:33:13,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:33:13,536 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 00:33:13,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:33:13,537 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 00:33:13,541 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 00:33:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:33:13,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 00:33:13,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:33:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:33:14,232 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:33:14,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:33:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422377377] [2023-12-22 00:33:14,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422377377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:33:14,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:33:14,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 00:33:14,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283068547] [2023-12-22 00:33:14,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:33:14,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:33:14,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:33:14,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:33:14,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:33:14,235 INFO L87 Difference]: Start difference. First operand 28271 states and 33385 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 00:33:46,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:33:46,188 INFO L93 Difference]: Finished difference Result 33530 states and 40403 transitions. [2023-12-22 00:33:46,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:33:46,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 00:33:46,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:33:46,222 INFO L225 Difference]: With dead ends: 33530 [2023-12-22 00:33:46,222 INFO L226 Difference]: Without dead ends: 28271 [2023-12-22 00:33:46,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 204 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 00:33:46,229 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 691 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.4s IncrementalHoareTripleChecker+Time [2023-12-22 00:33:46,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 777 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2184 Invalid, 0 Unknown, 0 Unchecked, 30.4s Time] [2023-12-22 00:33:46,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28271 states. [2023-12-22 00:33:47,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28271 to 28271. [2023-12-22 00:33:47,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28271 states, 28269 states have (on average 1.1807633803813364) internal successors, (33379), 28270 states have internal predecessors, (33379), 0 states have call successors, (0), 0 states 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 00:33:47,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28271 states to 28271 states and 33379 transitions. [2023-12-22 00:33:47,682 INFO L78 Accepts]: Start accepts. Automaton has 28271 states and 33379 transitions. Word has length 206 [2023-12-22 00:33:47,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:33:47,682 INFO L495 AbstractCegarLoop]: Abstraction has 28271 states and 33379 transitions. [2023-12-22 00:33:47,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 00:33:47,683 INFO L276 IsEmpty]: Start isEmpty. Operand 28271 states and 33379 transitions. [2023-12-22 00:33:47,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-22 00:33:47,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:33:47,692 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:33:47,698 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 00:33:47,892 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 00:33:47,893 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:33:47,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:33:47,893 INFO L85 PathProgramCache]: Analyzing trace with hash 348299772, now seen corresponding path program 2 times [2023-12-22 00:33:47,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:33:47,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465340930] [2023-12-22 00:33:47,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 00:33:47,894 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 00:33:47,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:33:47,894 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 00:33:47,898 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 00:33:48,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-22 00:33:48,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 00:33:48,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-22 00:33:48,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:33:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 77 proven. 427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:33:49,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:33:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 77 proven. 427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:33:51,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:33:51,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465340930] [2023-12-22 00:33:51,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465340930] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:33:51,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:33:51,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 44 [2023-12-22 00:33:51,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916206886] [2023-12-22 00:33:51,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:33:51,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-22 00:33:51,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:33:51,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-22 00:33:51,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1737, Unknown=0, NotChecked=0, Total=1892 [2023-12-22 00:33:51,875 INFO L87 Difference]: Start difference. First operand 28271 states and 33379 transitions. Second operand has 44 states, 44 states have (on average 9.181818181818182) internal successors, (404), 44 states have internal predecessors, (404), 0 states have call successors, (0), 0 states 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 00:34:48,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:34:48,919 INFO L93 Difference]: Finished difference Result 34872 states and 41101 transitions. [2023-12-22 00:34:48,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 267 states. [2023-12-22 00:34:48,920 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 9.181818181818182) internal successors, (404), 44 states have internal predecessors, (404), 0 states have call successors, (0), 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 211 [2023-12-22 00:34:48,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:34:48,952 INFO L225 Difference]: With dead ends: 34872 [2023-12-22 00:34:48,952 INFO L226 Difference]: Without dead ends: 30676 [2023-12-22 00:34:48,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33454 ImplicationChecksByTransitivity, 44.8s TimeCoverageRelationStatistics Valid=9253, Invalid=84077, Unknown=0, NotChecked=0, Total=93330 [2023-12-22 00:34:48,964 INFO L413 NwaCegarLoop]: 1780 mSDtfsCounter, 35091 mSDsluCounter, 20749 mSDsCounter, 0 mSdLazyCounter, 7159 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35091 SdHoareTripleChecker+Valid, 22529 SdHoareTripleChecker+Invalid, 7259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 7159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-12-22 00:34:48,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35091 Valid, 22529 Invalid, 7259 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 7159 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2023-12-22 00:34:48,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30676 states. [2023-12-22 00:34:50,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30676 to 29091. [2023-12-22 00:34:50,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29091 states, 29089 states have (on average 1.179518030870776) internal successors, (34311), 29090 states have internal predecessors, (34311), 0 states have call successors, (0), 0 states 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 00:34:50,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29091 states to 29091 states and 34311 transitions. [2023-12-22 00:34:50,689 INFO L78 Accepts]: Start accepts. Automaton has 29091 states and 34311 transitions. Word has length 211 [2023-12-22 00:34:50,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:34:50,689 INFO L495 AbstractCegarLoop]: Abstraction has 29091 states and 34311 transitions. [2023-12-22 00:34:50,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 9.181818181818182) internal successors, (404), 44 states have internal predecessors, (404), 0 states have call successors, (0), 0 states 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 00:34:50,689 INFO L276 IsEmpty]: Start isEmpty. Operand 29091 states and 34311 transitions. [2023-12-22 00:34:50,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-22 00:34:50,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:34:50,698 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:34:50,702 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 00:34:50,899 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 00:34:50,899 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:34:50,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:34:50,900 INFO L85 PathProgramCache]: Analyzing trace with hash -123930720, now seen corresponding path program 2 times [2023-12-22 00:34:50,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:34:50,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417287718] [2023-12-22 00:34:50,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 00:34:50,900 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 00:34:50,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:34:50,901 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 00:34:50,902 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 00:34:51,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-22 00:34:51,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 00:34:51,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-22 00:34:51,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:34:53,280 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 100 proven. 404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:34:53,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:34:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 100 proven. 404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:34:54,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:34:54,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417287718] [2023-12-22 00:34:54,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417287718] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:34:54,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:34:54,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 44 [2023-12-22 00:34:54,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950376037] [2023-12-22 00:34:54,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:34:54,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-22 00:34:54,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:34:54,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-22 00:34:54,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1737, Unknown=0, NotChecked=0, Total=1892 [2023-12-22 00:34:54,978 INFO L87 Difference]: Start difference. First operand 29091 states and 34311 transitions. Second operand has 44 states, 44 states have (on average 9.068181818181818) internal successors, (399), 44 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 00:35:48,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:35:48,725 INFO L93 Difference]: Finished difference Result 34860 states and 41033 transitions. [2023-12-22 00:35:48,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2023-12-22 00:35:48,727 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 9.068181818181818) internal successors, (399), 44 states have internal predecessors, (399), 0 states have call successors, (0), 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 211 [2023-12-22 00:35:48,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:35:48,757 INFO L225 Difference]: With dead ends: 34860 [2023-12-22 00:35:48,757 INFO L226 Difference]: Without dead ends: 29688 [2023-12-22 00:35:48,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30216 ImplicationChecksByTransitivity, 42.0s TimeCoverageRelationStatistics Valid=8481, Invalid=77075, Unknown=0, NotChecked=0, Total=85556 [2023-12-22 00:35:48,767 INFO L413 NwaCegarLoop]: 1785 mSDtfsCounter, 26417 mSDsluCounter, 17880 mSDsCounter, 0 mSdLazyCounter, 7111 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26417 SdHoareTripleChecker+Valid, 19665 SdHoareTripleChecker+Invalid, 7204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 7111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:35:48,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26417 Valid, 19665 Invalid, 7204 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 7111 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2023-12-22 00:35:48,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29688 states. [2023-12-22 00:35:50,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29688 to 28406. [2023-12-22 00:35:50,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28406 states, 28404 states have (on average 1.178355161244895) internal successors, (33470), 28405 states have internal predecessors, (33470), 0 states have call successors, (0), 0 states 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 00:35:50,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28406 states to 28406 states and 33470 transitions. [2023-12-22 00:35:50,498 INFO L78 Accepts]: Start accepts. Automaton has 28406 states and 33470 transitions. Word has length 211 [2023-12-22 00:35:50,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:35:50,498 INFO L495 AbstractCegarLoop]: Abstraction has 28406 states and 33470 transitions. [2023-12-22 00:35:50,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 9.068181818181818) internal successors, (399), 44 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 00:35:50,498 INFO L276 IsEmpty]: Start isEmpty. Operand 28406 states and 33470 transitions. [2023-12-22 00:35:50,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-22 00:35:50,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:35:50,507 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:35:50,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2023-12-22 00:35:50,711 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 00:35:50,711 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:35:50,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:35:50,712 INFO L85 PathProgramCache]: Analyzing trace with hash 274812668, now seen corresponding path program 1 times [2023-12-22 00:35:50,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:35:50,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042955942] [2023-12-22 00:35:50,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:35:50,712 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 00:35:50,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:35:50,713 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 00:35:50,714 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 00:35:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:35:50,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-22 00:35:50,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:35:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 266 proven. 192 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-22 00:35:55,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:35:57,560 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 266 proven. 192 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-22 00:35:57,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:35:57,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042955942] [2023-12-22 00:35:57,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042955942] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:35:57,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:35:57,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 44 [2023-12-22 00:35:57,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649907124] [2023-12-22 00:35:57,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:35:57,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-22 00:35:57,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:35:57,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-22 00:35:57,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1722, Unknown=0, NotChecked=0, Total=1892 [2023-12-22 00:35:57,562 INFO L87 Difference]: Start difference. First operand 28406 states and 33470 transitions. Second operand has 44 states, 44 states have (on average 7.363636363636363) internal successors, (324), 44 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-22 00:40:38,378 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 00:40:38,378 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 00:40:38,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 521 states. [2023-12-22 00:40:38,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 936 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 556 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135010 ImplicationChecksByTransitivity, 250.1s TimeCoverageRelationStatistics Valid=23525, Invalid=287281, Unknown=0, NotChecked=0, Total=310806 [2023-12-22 00:40:38,413 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 5343 mSDsluCounter, 8461 mSDsCounter, 0 mSdLazyCounter, 10009 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5343 SdHoareTripleChecker+Valid, 8946 SdHoareTripleChecker+Invalid, 10164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 10009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.6s IncrementalHoareTripleChecker+Time [2023-12-22 00:40:38,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5343 Valid, 8946 Invalid, 10164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [155 Valid, 10009 Invalid, 0 Unknown, 0 Unchecked, 30.6s Time] [2023-12-22 00:40:38,415 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-22 00:40:38,418 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 00:40:38,615 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 00:40:38,615 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (28406states) and FLOYD_HOARE automaton (currently 521 states, 44 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 558 known predicates. [2023-12-22 00:40:38,617 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-22 00:40:38,619 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:40:38,620 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 00:40:38,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 12:40:38 BoogieIcfgContainer [2023-12-22 00:40:38,622 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 00:40:38,622 INFO L158 Benchmark]: Toolchain (without parser) took 855104.28ms. Allocated memory was 273.7MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 215.4MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 509.8MB. Max. memory is 8.0GB. [2023-12-22 00:40:38,622 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 208.7MB. Free memory is still 160.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 00:40:38,622 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1593.57ms. Allocated memory is still 273.7MB. Free memory was 215.1MB in the beginning and 191.0MB in the end (delta: 24.1MB). Peak memory consumption was 146.2MB. Max. memory is 8.0GB. [2023-12-22 00:40:38,622 INFO L158 Benchmark]: Boogie Procedure Inliner took 256.55ms. Allocated memory is still 273.7MB. Free memory was 191.0MB in the beginning and 189.0MB in the end (delta: 2.0MB). Peak memory consumption was 18.8MB. Max. memory is 8.0GB. [2023-12-22 00:40:38,622 INFO L158 Benchmark]: Boogie Preprocessor took 325.67ms. Allocated memory is still 273.7MB. Free memory was 189.0MB in the beginning and 150.2MB in the end (delta: 38.8MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-22 00:40:38,622 INFO L158 Benchmark]: RCFGBuilder took 31671.37ms. Allocated memory was 273.7MB in the beginning and 649.1MB in the end (delta: 375.4MB). Free memory was 150.2MB in the beginning and 540.9MB in the end (delta: -390.7MB). Peak memory consumption was 170.8MB. Max. memory is 8.0GB. [2023-12-22 00:40:38,622 INFO L158 Benchmark]: TraceAbstraction took 821249.91ms. Allocated memory was 649.1MB in the beginning and 2.1GB in the end (delta: 1.4GB). Free memory was 539.8MB in the beginning and 1.5GB in the end (delta: -950.6MB). Peak memory consumption was 458.1MB. Max. memory is 8.0GB. [2023-12-22 00:40:38,623 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 208.7MB. Free memory is still 160.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1593.57ms. Allocated memory is still 273.7MB. Free memory was 215.1MB in the beginning and 191.0MB in the end (delta: 24.1MB). Peak memory consumption was 146.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 256.55ms. Allocated memory is still 273.7MB. Free memory was 191.0MB in the beginning and 189.0MB in the end (delta: 2.0MB). Peak memory consumption was 18.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 325.67ms. Allocated memory is still 273.7MB. Free memory was 189.0MB in the beginning and 150.2MB in the end (delta: 38.8MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * RCFGBuilder took 31671.37ms. Allocated memory was 273.7MB in the beginning and 649.1MB in the end (delta: 375.4MB). Free memory was 150.2MB in the beginning and 540.9MB in the end (delta: -390.7MB). Peak memory consumption was 170.8MB. Max. memory is 8.0GB. * TraceAbstraction took 821249.91ms. Allocated memory was 649.1MB in the beginning and 2.1GB in the end (delta: 1.4GB). Free memory was 539.8MB in the beginning and 1.5GB in the end (delta: -950.6MB). Peak memory consumption was 458.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 364]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 364). Cancelled while NwaCegarLoop was constructing difference of abstraction (28406states) and FLOYD_HOARE automaton (currently 521 states, 44 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 558 known predicates. - TimeoutResultAtElement [Line: 568]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 568). Cancelled while NwaCegarLoop was constructing difference of abstraction (28406states) and FLOYD_HOARE automaton (currently 521 states, 44 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 558 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 822 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 821.2s, OverallIterations: 41, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 733.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 187275 SdHoareTripleChecker+Valid, 302.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 187275 mSDsluCounter, 424258 SdHoareTripleChecker+Invalid, 262.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 364928 mSDsCounter, 2759 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73359 IncrementalHoareTripleChecker+Invalid, 76118 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2759 mSolverCounterUnsat, 59330 mSDtfsCounter, 73359 mSolverCounterSat, 1.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8572 GetRequests, 6306 SyntacticMatches, 0 SemanticMatches, 2265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226481 ImplicationChecksByTransitivity, 420.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29091occurred in iteration=39, InterpolantAutomatonStates: 1386, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 19.7s AutomataMinimizationTime, 40 MinimizatonAttempts, 38990 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 55.4s InterpolantComputationTime, 4433 NumberOfCodeBlocks, 4001 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 6831 ConstructedInterpolants, 1842 QuantifiedInterpolants, 88572 SizeOfPredicates, 194 NumberOfNonLiveVariables, 8948 ConjunctsInSsa, 348 ConjunctsInUnsatCore, 60 InterpolantComputations, 22 PerfectInterpolantSequences, 3162/7962 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown