/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 07:34:28,645 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 07:34:28,699 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 07:34:28,704 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 07:34:28,704 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 07:34:28,724 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 07:34:28,725 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 07:34:28,725 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 07:34:28,726 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 07:34:28,726 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 07:34:28,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 07:34:28,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 07:34:28,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 07:34:28,728 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 07:34:28,728 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 07:34:28,729 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 07:34:28,729 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 07:34:28,729 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 07:34:28,730 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 07:34:28,730 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 07:34:28,731 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 07:34:28,731 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 07:34:28,732 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 07:34:28,732 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 07:34:28,732 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 07:34:28,733 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 07:34:28,733 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 07:34:28,733 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 07:34:28,734 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 07:34:28,734 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 07:34:28,734 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 07:34:28,735 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 07:34:28,735 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 07:34:28,735 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 07:34:28,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 07:34:28,736 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 07:34:28,737 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 07:34:28,737 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 07:34:28,737 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 07:34:28,738 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 07:34:28,738 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 07:34:28,739 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 07:34:28,739 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 07:34:28,739 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 07:34:28,740 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 07:34:28,740 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 07:34:28,740 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 07:34:28,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 07:34:28,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 07:34:28,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 07:34:29,001 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 07:34:29,002 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 07:34:29,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c [2023-12-25 07:34:30,207 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 07:34:30,514 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 07:34:30,515 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c [2023-12-25 07:34:30,548 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dab5a097/f1f80dd6e34f4ff19991ea385e51588a/FLAGf98b1cb02 [2023-12-25 07:34:30,559 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dab5a097/f1f80dd6e34f4ff19991ea385e51588a [2023-12-25 07:34:30,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 07:34:30,565 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 07:34:30,568 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 07:34:30,568 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 07:34:30,572 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 07:34:30,573 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:34:30" (1/1) ... [2023-12-25 07:34:30,574 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41f86a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:34:30, skipping insertion in model container [2023-12-25 07:34:30,574 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:34:30" (1/1) ... [2023-12-25 07:34:30,642 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 07:34:31,056 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c[60917,60930] [2023-12-25 07:34:31,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 07:34:31,099 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 07:34:31,204 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c[60917,60930] [2023-12-25 07:34:31,205 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 07:34:31,221 INFO L206 MainTranslator]: Completed translation [2023-12-25 07:34:31,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:34:31 WrapperNode [2023-12-25 07:34:31,222 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 07:34:31,223 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 07:34:31,223 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 07:34:31,223 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 07:34:31,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:34:31" (1/1) ... [2023-12-25 07:34:31,255 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:34:31" (1/1) ... [2023-12-25 07:34:31,355 INFO L138 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1993 [2023-12-25 07:34:31,355 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 07:34:31,356 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 07:34:31,356 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 07:34:31,356 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 07:34:31,365 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:34:31" (1/1) ... [2023-12-25 07:34:31,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:34:31" (1/1) ... [2023-12-25 07:34:31,376 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:34:31" (1/1) ... [2023-12-25 07:34:31,411 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-25 07:34:31,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:34:31" (1/1) ... [2023-12-25 07:34:31,412 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:34:31" (1/1) ... [2023-12-25 07:34:31,458 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:34:31" (1/1) ... [2023-12-25 07:34:31,482 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:34:31" (1/1) ... [2023-12-25 07:34:31,488 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:34:31" (1/1) ... [2023-12-25 07:34:31,508 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:34:31" (1/1) ... [2023-12-25 07:34:31,519 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 07:34:31,527 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 07:34:31,527 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 07:34:31,527 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 07:34:31,528 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:34:31" (1/1) ... [2023-12-25 07:34:31,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 07:34:31,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 07:34:31,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-25 07:34:31,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-25 07:34:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 07:34:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 07:34:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 07:34:31,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 07:34:31,777 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 07:34:31,780 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 07:34:33,313 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 07:34:33,383 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 07:34:33,384 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 07:34:33,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:34:33 BoogieIcfgContainer [2023-12-25 07:34:33,384 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 07:34:33,386 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 07:34:33,386 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 07:34:33,390 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 07:34:33,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 07:34:30" (1/3) ... [2023-12-25 07:34:33,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5751a8c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:34:33, skipping insertion in model container [2023-12-25 07:34:33,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:34:31" (2/3) ... [2023-12-25 07:34:33,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5751a8c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:34:33, skipping insertion in model container [2023-12-25 07:34:33,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:34:33" (3/3) ... [2023-12-25 07:34:33,393 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.BOUNDED-10.pals.c [2023-12-25 07:34:33,409 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 07:34:33,409 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 07:34:33,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 07:34:33,491 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;@6017071b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 07:34:33,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 07:34:33,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 661 states, 659 states have (on average 1.8786039453717753) internal successors, (1238), 660 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:33,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-25 07:34:33,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:34:33,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:34:33,531 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:34:33,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:34:33,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1749920930, now seen corresponding path program 1 times [2023-12-25 07:34:33,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:34:33,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304955001] [2023-12-25 07:34:33,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:34:33,550 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:33,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:34:33,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:34:33,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-25 07:34:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:34:33,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-25 07:34:33,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:34:33,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:34:33,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:34:33,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:34:33,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304955001] [2023-12-25 07:34:33,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304955001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:34:33,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:34:33,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 07:34:33,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893590977] [2023-12-25 07:34:33,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:34:33,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-25 07:34:33,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:34:33,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-25 07:34:33,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 07:34:33,939 INFO L87 Difference]: Start difference. First operand has 661 states, 659 states have (on average 1.8786039453717753) internal successors, (1238), 660 states have internal predecessors, (1238), 0 states have call successors, (0), 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 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:34,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:34:34,028 INFO L93 Difference]: Finished difference Result 779 states and 1452 transitions. [2023-12-25 07:34:34,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-25 07:34:34,035 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2023-12-25 07:34:34,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:34:34,050 INFO L225 Difference]: With dead ends: 779 [2023-12-25 07:34:34,050 INFO L226 Difference]: Without dead ends: 659 [2023-12-25 07:34:34,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 07:34:34,056 INFO L413 NwaCegarLoop]: 1231 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, 1231 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:34:34,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1231 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:34:34,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-12-25 07:34:34,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2023-12-25 07:34:34,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 1.8738601823708207) internal successors, (1233), 658 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:34,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1233 transitions. [2023-12-25 07:34:34,122 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1233 transitions. Word has length 150 [2023-12-25 07:34:34,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:34:34,122 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 1233 transitions. [2023-12-25 07:34:34,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:34,123 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1233 transitions. [2023-12-25 07:34:34,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-25 07:34:34,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:34:34,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:34:34,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-25 07:34:34,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:34,331 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:34:34,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:34:34,332 INFO L85 PathProgramCache]: Analyzing trace with hash -621818332, now seen corresponding path program 1 times [2023-12-25 07:34:34,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:34:34,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638435628] [2023-12-25 07:34:34,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:34:34,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:34,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:34:34,335 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:34:34,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-25 07:34:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:34:34,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 07:34:34,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:34:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:34:34,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:34:34,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:34:34,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638435628] [2023-12-25 07:34:34,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638435628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:34:34,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:34:34,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:34:34,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064792439] [2023-12-25 07:34:34,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:34:34,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:34:34,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:34:34,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:34:34,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:34:34,629 INFO L87 Difference]: Start difference. First operand 659 states and 1233 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:34,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:34:34,744 INFO L93 Difference]: Finished difference Result 777 states and 1445 transitions. [2023-12-25 07:34:34,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:34:34,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2023-12-25 07:34:34,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:34:34,753 INFO L225 Difference]: With dead ends: 777 [2023-12-25 07:34:34,753 INFO L226 Difference]: Without dead ends: 659 [2023-12-25 07:34:34,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:34:34,756 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 0 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3627 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:34:34,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3627 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:34:34,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-12-25 07:34:34,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2023-12-25 07:34:34,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 1.7826747720364742) internal successors, (1173), 658 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1173 transitions. [2023-12-25 07:34:34,794 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1173 transitions. Word has length 150 [2023-12-25 07:34:34,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:34:34,794 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 1173 transitions. [2023-12-25 07:34:34,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:34,795 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1173 transitions. [2023-12-25 07:34:34,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-25 07:34:34,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:34:34,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:34:34,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-25 07:34:35,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:35,004 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:34:35,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:34:35,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1957353913, now seen corresponding path program 1 times [2023-12-25 07:34:35,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:34:35,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56656852] [2023-12-25 07:34:35,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:34:35,007 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:35,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:34:35,010 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:34:35,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-25 07:34:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:34:35,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:34:35,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:34:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:34:35,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:34:35,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:34:35,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56656852] [2023-12-25 07:34:35,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56656852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:34:35,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:34:35,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:34:35,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722186214] [2023-12-25 07:34:35,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:34:35,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:34:35,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:34:35,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:34:35,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:34:35,369 INFO L87 Difference]: Start difference. First operand 659 states and 1173 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:35,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:34:35,424 INFO L93 Difference]: Finished difference Result 876 states and 1566 transitions. [2023-12-25 07:34:35,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:34:35,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 209 [2023-12-25 07:34:35,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:34:35,431 INFO L225 Difference]: With dead ends: 876 [2023-12-25 07:34:35,431 INFO L226 Difference]: Without dead ends: 761 [2023-12-25 07:34:35,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:34:35,437 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 176 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2279 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:34:35,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2279 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:34:35,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2023-12-25 07:34:35,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 759. [2023-12-25 07:34:35,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 1.7823218997361479) internal successors, (1351), 758 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:35,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1351 transitions. [2023-12-25 07:34:35,460 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1351 transitions. Word has length 209 [2023-12-25 07:34:35,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:34:35,461 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 1351 transitions. [2023-12-25 07:34:35,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:35,461 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1351 transitions. [2023-12-25 07:34:35,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-12-25 07:34:35,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:34:35,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:34:35,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-25 07:34:35,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:35,669 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:34:35,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:34:35,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1276000645, now seen corresponding path program 1 times [2023-12-25 07:34:35,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:34:35,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366005306] [2023-12-25 07:34:35,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:34:35,671 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:35,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:34:35,673 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:34:35,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-25 07:34:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:34:35,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:34:35,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:34:36,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:34:36,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:34:36,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:34:36,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366005306] [2023-12-25 07:34:36,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366005306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:34:36,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:34:36,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:34:36,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067055782] [2023-12-25 07:34:36,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:34:36,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:34:36,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:34:36,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:34:36,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:34:36,150 INFO L87 Difference]: Start difference. First operand 759 states and 1351 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:36,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:34:36,276 INFO L93 Difference]: Finished difference Result 2243 states and 3988 transitions. [2023-12-25 07:34:36,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:34:36,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 213 [2023-12-25 07:34:36,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:34:36,283 INFO L225 Difference]: With dead ends: 2243 [2023-12-25 07:34:36,283 INFO L226 Difference]: Without dead ends: 1500 [2023-12-25 07:34:36,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:34:36,286 INFO L413 NwaCegarLoop]: 1165 mSDtfsCounter, 2795 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2795 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:34:36,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2795 Valid, 2503 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:34:36,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2023-12-25 07:34:36,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1498. [2023-12-25 07:34:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 1.7702070808283232) internal successors, (2650), 1497 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:36,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 2650 transitions. [2023-12-25 07:34:36,321 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 2650 transitions. Word has length 213 [2023-12-25 07:34:36,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:34:36,321 INFO L495 AbstractCegarLoop]: Abstraction has 1498 states and 2650 transitions. [2023-12-25 07:34:36,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:36,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 2650 transitions. [2023-12-25 07:34:36,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-12-25 07:34:36,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:34:36,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:34:36,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-25 07:34:36,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:36,531 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:34:36,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:34:36,532 INFO L85 PathProgramCache]: Analyzing trace with hash 529437689, now seen corresponding path program 1 times [2023-12-25 07:34:36,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:34:36,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79890787] [2023-12-25 07:34:36,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:34:36,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:36,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:34:36,534 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:34:36,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-25 07:34:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:34:36,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:34:36,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:34:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:34:36,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:34:36,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:34:36,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79890787] [2023-12-25 07:34:36,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79890787] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:34:36,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:34:36,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:34:36,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563863100] [2023-12-25 07:34:36,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:34:36,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:34:36,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:34:36,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:34:36,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:34:36,867 INFO L87 Difference]: Start difference. First operand 1498 states and 2650 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:36,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:34:36,909 INFO L93 Difference]: Finished difference Result 2306 states and 4096 transitions. [2023-12-25 07:34:36,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:34:36,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 213 [2023-12-25 07:34:36,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:34:36,918 INFO L225 Difference]: With dead ends: 2306 [2023-12-25 07:34:36,918 INFO L226 Difference]: Without dead ends: 1880 [2023-12-25 07:34:36,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:34:36,920 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 176 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:34:36,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2287 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:34:36,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2023-12-25 07:34:36,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1878. [2023-12-25 07:34:36,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1877 states have (on average 1.7719765583377731) internal successors, (3326), 1877 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:36,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 3326 transitions. [2023-12-25 07:34:36,970 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 3326 transitions. Word has length 213 [2023-12-25 07:34:36,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:34:36,970 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 3326 transitions. [2023-12-25 07:34:36,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:36,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 3326 transitions. [2023-12-25 07:34:36,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-25 07:34:36,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:34:36,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:34:36,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-25 07:34:37,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:37,187 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:34:37,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:34:37,187 INFO L85 PathProgramCache]: Analyzing trace with hash 2018835115, now seen corresponding path program 1 times [2023-12-25 07:34:37,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:34:37,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769196365] [2023-12-25 07:34:37,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:34:37,188 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:37,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:34:37,190 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:34:37,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-25 07:34:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:34:37,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:34:37,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:34:37,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:34:37,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:34:37,532 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:34:37,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769196365] [2023-12-25 07:34:37,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769196365] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:34:37,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:34:37,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:34:37,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359627501] [2023-12-25 07:34:37,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:34:37,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:34:37,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:34:37,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:34:37,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:34:37,534 INFO L87 Difference]: Start difference. First operand 1878 states and 3326 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:37,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:34:37,583 INFO L93 Difference]: Finished difference Result 3402 states and 6040 transitions. [2023-12-25 07:34:37,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:34:37,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 217 [2023-12-25 07:34:37,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:34:37,595 INFO L225 Difference]: With dead ends: 3402 [2023-12-25 07:34:37,595 INFO L226 Difference]: Without dead ends: 2596 [2023-12-25 07:34:37,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:34:37,598 INFO L413 NwaCegarLoop]: 1273 mSDtfsCounter, 168 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:34:37,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2393 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:34:37,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2596 states. [2023-12-25 07:34:37,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2596 to 2594. [2023-12-25 07:34:37,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2594 states, 2593 states have (on average 1.7701504049363672) internal successors, (4590), 2593 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:37,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 4590 transitions. [2023-12-25 07:34:37,665 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 4590 transitions. Word has length 217 [2023-12-25 07:34:37,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:34:37,666 INFO L495 AbstractCegarLoop]: Abstraction has 2594 states and 4590 transitions. [2023-12-25 07:34:37,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:37,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 4590 transitions. [2023-12-25 07:34:37,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-25 07:34:37,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:34:37,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:34:37,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-25 07:34:37,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:37,877 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:34:37,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:34:37,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1363063442, now seen corresponding path program 1 times [2023-12-25 07:34:37,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:34:37,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79488890] [2023-12-25 07:34:37,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:34:37,879 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:37,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:34:37,880 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:34:37,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-25 07:34:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:34:38,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:34:38,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:34:38,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:34:38,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:34:38,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:34:38,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79488890] [2023-12-25 07:34:38,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79488890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:34:38,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:34:38,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:34:38,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16979793] [2023-12-25 07:34:38,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:34:38,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:34:38,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:34:38,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:34:38,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:34:38,184 INFO L87 Difference]: Start difference. First operand 2594 states and 4590 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:38,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:34:38,240 INFO L93 Difference]: Finished difference Result 4200 states and 7443 transitions. [2023-12-25 07:34:38,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:34:38,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 221 [2023-12-25 07:34:38,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:34:38,254 INFO L225 Difference]: With dead ends: 4200 [2023-12-25 07:34:38,254 INFO L226 Difference]: Without dead ends: 3394 [2023-12-25 07:34:38,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:34:38,259 INFO L413 NwaCegarLoop]: 1274 mSDtfsCounter, 169 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:34:38,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 2425 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:34:38,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3394 states. [2023-12-25 07:34:38,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3394 to 3392. [2023-12-25 07:34:38,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3392 states, 3391 states have (on average 1.7649660867000885) internal successors, (5985), 3391 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:38,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3392 states to 3392 states and 5985 transitions. [2023-12-25 07:34:38,345 INFO L78 Accepts]: Start accepts. Automaton has 3392 states and 5985 transitions. Word has length 221 [2023-12-25 07:34:38,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:34:38,346 INFO L495 AbstractCegarLoop]: Abstraction has 3392 states and 5985 transitions. [2023-12-25 07:34:38,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:38,346 INFO L276 IsEmpty]: Start isEmpty. Operand 3392 states and 5985 transitions. [2023-12-25 07:34:38,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-25 07:34:38,351 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:34:38,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:34:38,360 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 (8)] Ended with exit code 0 [2023-12-25 07:34:38,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:38,557 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:34:38,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:34:38,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1432672861, now seen corresponding path program 1 times [2023-12-25 07:34:38,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:34:38,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732440774] [2023-12-25 07:34:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:34:38,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:38,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:34:38,560 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:34:38,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-25 07:34:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:34:38,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:34:38,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:34:38,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:34:38,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:34:38,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:34:38,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732440774] [2023-12-25 07:34:38,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732440774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:34:38,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:34:38,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:34:38,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229139810] [2023-12-25 07:34:38,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:34:38,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:34:38,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:34:38,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:34:38,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:34:38,896 INFO L87 Difference]: Start difference. First operand 3392 states and 5985 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:38,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:34:38,967 INFO L93 Difference]: Finished difference Result 7508 states and 13243 transitions. [2023-12-25 07:34:38,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:34:38,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 221 [2023-12-25 07:34:38,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:34:38,987 INFO L225 Difference]: With dead ends: 7508 [2023-12-25 07:34:38,987 INFO L226 Difference]: Without dead ends: 5318 [2023-12-25 07:34:38,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:34:38,993 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 160 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:34:38,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 2290 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:34:38,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5318 states. [2023-12-25 07:34:39,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5318 to 5316. [2023-12-25 07:34:39,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 5315 states have (on average 1.7567262464722484) internal successors, (9337), 5315 states have internal predecessors, (9337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:39,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 9337 transitions. [2023-12-25 07:34:39,126 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 9337 transitions. Word has length 221 [2023-12-25 07:34:39,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:34:39,126 INFO L495 AbstractCegarLoop]: Abstraction has 5316 states and 9337 transitions. [2023-12-25 07:34:39,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:39,127 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 9337 transitions. [2023-12-25 07:34:39,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-12-25 07:34:39,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:34:39,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:34:39,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-25 07:34:39,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:39,338 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:34:39,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:34:39,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1178550255, now seen corresponding path program 1 times [2023-12-25 07:34:39,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:34:39,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689586947] [2023-12-25 07:34:39,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:34:39,340 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 [2023-12-25 07:34:39,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:34:39,343 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:34:39,380 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 (10)] Waiting until timeout for monitored process [2023-12-25 07:34:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:34:39,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:34:39,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:34:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:34:39,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:34:39,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:34:39,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689586947] [2023-12-25 07:34:39,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689586947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:34:39,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:34:39,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:34:39,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792361444] [2023-12-25 07:34:39,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:34:39,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:34:39,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:34:39,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:34:39,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:34:39,888 INFO L87 Difference]: Start difference. First operand 5316 states and 9337 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 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) [2023-12-25 07:34:40,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:34:40,098 INFO L93 Difference]: Finished difference Result 15747 states and 27635 transitions. [2023-12-25 07:34:40,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:34:40,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 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 225 [2023-12-25 07:34:40,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:34:40,152 INFO L225 Difference]: With dead ends: 15747 [2023-12-25 07:34:40,152 INFO L226 Difference]: Without dead ends: 10571 [2023-12-25 07:34:40,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:34:40,167 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 2617 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2617 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:34:40,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2617 Valid, 2655 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:34:40,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10571 states. [2023-12-25 07:34:40,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10571 to 10569. [2023-12-25 07:34:40,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10569 states, 10568 states have (on average 1.7462149886449658) internal successors, (18454), 10568 states have internal predecessors, (18454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:40,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 18454 transitions. [2023-12-25 07:34:40,472 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 18454 transitions. Word has length 225 [2023-12-25 07:34:40,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:34:40,472 INFO L495 AbstractCegarLoop]: Abstraction has 10569 states and 18454 transitions. [2023-12-25 07:34:40,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 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) [2023-12-25 07:34:40,473 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 18454 transitions. [2023-12-25 07:34:40,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-12-25 07:34:40,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:34:40,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:34:40,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-25 07:34:40,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:40,688 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:34:40,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:34:40,693 INFO L85 PathProgramCache]: Analyzing trace with hash -591744241, now seen corresponding path program 1 times [2023-12-25 07:34:40,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:34:40,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162421187] [2023-12-25 07:34:40,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:34:40,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:40,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:34:40,696 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:34:40,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-25 07:34:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:34:40,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:34:40,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:34:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:34:41,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:34:41,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:34:41,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162421187] [2023-12-25 07:34:41,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162421187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:34:41,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:34:41,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:34:41,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666597559] [2023-12-25 07:34:41,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:34:41,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:34:41,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:34:41,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:34:41,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:34:41,115 INFO L87 Difference]: Start difference. First operand 10569 states and 18454 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 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) [2023-12-25 07:34:41,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:34:41,294 INFO L93 Difference]: Finished difference Result 25965 states and 45272 transitions. [2023-12-25 07:34:41,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:34:41,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 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 225 [2023-12-25 07:34:41,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:34:41,337 INFO L225 Difference]: With dead ends: 25965 [2023-12-25 07:34:41,337 INFO L226 Difference]: Without dead ends: 17763 [2023-12-25 07:34:41,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:34:41,355 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 152 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2291 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:34:41,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 2291 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:34:41,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17763 states. [2023-12-25 07:34:41,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17763 to 17761. [2023-12-25 07:34:41,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17761 states, 17760 states have (on average 1.7359234234234233) internal successors, (30830), 17760 states have internal predecessors, (30830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:41,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17761 states to 17761 states and 30830 transitions. [2023-12-25 07:34:41,884 INFO L78 Accepts]: Start accepts. Automaton has 17761 states and 30830 transitions. Word has length 225 [2023-12-25 07:34:41,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:34:41,884 INFO L495 AbstractCegarLoop]: Abstraction has 17761 states and 30830 transitions. [2023-12-25 07:34:41,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 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) [2023-12-25 07:34:41,885 INFO L276 IsEmpty]: Start isEmpty. Operand 17761 states and 30830 transitions. [2023-12-25 07:34:41,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-25 07:34:41,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:34:41,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:34:41,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-25 07:34:42,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:42,100 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:34:42,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:34:42,101 INFO L85 PathProgramCache]: Analyzing trace with hash 610237251, now seen corresponding path program 1 times [2023-12-25 07:34:42,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:34:42,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364997801] [2023-12-25 07:34:42,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:34:42,102 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:42,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:34:42,103 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:34:42,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-25 07:34:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:34:42,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:34:42,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:34:42,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:34:42,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:34:42,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:34:42,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364997801] [2023-12-25 07:34:42,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364997801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:34:42,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:34:42,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:34:42,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554392881] [2023-12-25 07:34:42,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:34:42,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:34:42,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:34:42,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:34:42,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:34:42,611 INFO L87 Difference]: Start difference. First operand 17761 states and 30830 transitions. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:43,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:34:43,211 INFO L93 Difference]: Finished difference Result 52785 states and 91553 transitions. [2023-12-25 07:34:43,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:34:43,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 229 [2023-12-25 07:34:43,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:34:43,308 INFO L225 Difference]: With dead ends: 52785 [2023-12-25 07:34:43,309 INFO L226 Difference]: Without dead ends: 35265 [2023-12-25 07:34:43,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:34:43,345 INFO L413 NwaCegarLoop]: 1354 mSDtfsCounter, 2478 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2478 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:34:43,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2478 Valid, 2692 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:34:43,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35265 states. [2023-12-25 07:34:44,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35265 to 35263. [2023-12-25 07:34:44,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35263 states, 35262 states have (on average 1.7251432136577618) internal successors, (60832), 35262 states have internal predecessors, (60832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35263 states to 35263 states and 60832 transitions. [2023-12-25 07:34:44,334 INFO L78 Accepts]: Start accepts. Automaton has 35263 states and 60832 transitions. Word has length 229 [2023-12-25 07:34:44,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:34:44,335 INFO L495 AbstractCegarLoop]: Abstraction has 35263 states and 60832 transitions. [2023-12-25 07:34:44,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:44,335 INFO L276 IsEmpty]: Start isEmpty. Operand 35263 states and 60832 transitions. [2023-12-25 07:34:44,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-25 07:34:44,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:34:44,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:34:44,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-25 07:34:44,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:44,573 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:34:44,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:34:44,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1164770111, now seen corresponding path program 1 times [2023-12-25 07:34:44,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:34:44,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355336408] [2023-12-25 07:34:44,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:34:44,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:44,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:34:44,576 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:34:44,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-25 07:34:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:34:44,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 07:34:44,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:34:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:34:45,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:34:45,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:34:45,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355336408] [2023-12-25 07:34:45,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355336408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:34:45,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:34:45,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 07:34:45,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150025165] [2023-12-25 07:34:45,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:34:45,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 07:34:45,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:34:45,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 07:34:45,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-25 07:34:45,761 INFO L87 Difference]: Start difference. First operand 35263 states and 60832 transitions. Second operand has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:47,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:34:47,085 INFO L93 Difference]: Finished difference Result 152135 states and 264146 transitions. [2023-12-25 07:34:47,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 07:34:47,087 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 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 229 [2023-12-25 07:34:47,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:34:47,600 INFO L225 Difference]: With dead ends: 152135 [2023-12-25 07:34:47,601 INFO L226 Difference]: Without dead ends: 121445 [2023-12-25 07:34:47,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-25 07:34:47,697 INFO L413 NwaCegarLoop]: 1161 mSDtfsCounter, 1462 mSDsluCounter, 3123 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 4284 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 07:34:47,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 4284 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 07:34:47,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121445 states. [2023-12-25 07:34:49,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121445 to 81151. [2023-12-25 07:34:49,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81151 states, 81150 states have (on average 1.719581022797289) internal successors, (139544), 81150 states have internal predecessors, (139544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:49,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81151 states to 81151 states and 139544 transitions. [2023-12-25 07:34:49,985 INFO L78 Accepts]: Start accepts. Automaton has 81151 states and 139544 transitions. Word has length 229 [2023-12-25 07:34:49,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:34:49,985 INFO L495 AbstractCegarLoop]: Abstraction has 81151 states and 139544 transitions. [2023-12-25 07:34:49,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:49,986 INFO L276 IsEmpty]: Start isEmpty. Operand 81151 states and 139544 transitions. [2023-12-25 07:34:50,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-25 07:34:50,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:34:50,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:34:50,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-25 07:34:50,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:50,214 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:34:50,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:34:50,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1821877822, now seen corresponding path program 1 times [2023-12-25 07:34:50,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:34:50,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312100149] [2023-12-25 07:34:50,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:34:50,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:50,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:34:50,218 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:34:50,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-25 07:34:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:34:50,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:34:50,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:34:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:34:50,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:34:50,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:34:50,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312100149] [2023-12-25 07:34:50,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312100149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:34:50,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:34:50,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:34:50,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588053675] [2023-12-25 07:34:50,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:34:50,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:34:50,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:34:50,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:34:50,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:34:50,823 INFO L87 Difference]: Start difference. First operand 81151 states and 139544 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 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) [2023-12-25 07:34:52,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:34:52,100 INFO L93 Difference]: Finished difference Result 213957 states and 370291 transitions. [2023-12-25 07:34:52,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:34:52,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 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 230 [2023-12-25 07:34:52,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:34:52,403 INFO L225 Difference]: With dead ends: 213957 [2023-12-25 07:34:52,404 INFO L226 Difference]: Without dead ends: 137591 [2023-12-25 07:34:52,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:34:52,514 INFO L413 NwaCegarLoop]: 1166 mSDtfsCounter, 537 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 2508 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:34:52,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 2508 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:34:52,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137591 states. [2023-12-25 07:34:54,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137591 to 121695. [2023-12-25 07:34:54,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121695 states, 121694 states have (on average 1.7236675596167437) internal successors, (209760), 121694 states have internal predecessors, (209760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:34:55,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121695 states to 121695 states and 209760 transitions. [2023-12-25 07:34:55,296 INFO L78 Accepts]: Start accepts. Automaton has 121695 states and 209760 transitions. Word has length 230 [2023-12-25 07:34:55,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:34:55,296 INFO L495 AbstractCegarLoop]: Abstraction has 121695 states and 209760 transitions. [2023-12-25 07:34:55,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 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) [2023-12-25 07:34:55,297 INFO L276 IsEmpty]: Start isEmpty. Operand 121695 states and 209760 transitions. [2023-12-25 07:34:55,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-25 07:34:55,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:34:55,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:34:55,326 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 (14)] Ended with exit code 0 [2023-12-25 07:34:55,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:55,524 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:34:55,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:34:55,525 INFO L85 PathProgramCache]: Analyzing trace with hash -4764500, now seen corresponding path program 1 times [2023-12-25 07:34:55,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:34:55,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780700556] [2023-12-25 07:34:55,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:34:55,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:34:55,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:34:55,528 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:34:55,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-25 07:34:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:34:55,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:34:55,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:34:55,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:34:55,801 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:34:55,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:34:55,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780700556] [2023-12-25 07:34:55,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780700556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:34:55,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:34:55,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:34:55,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556429537] [2023-12-25 07:34:55,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:34:55,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:34:55,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:34:55,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:34:55,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:34:55,803 INFO L87 Difference]: Start difference. First operand 121695 states and 209760 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 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) [2023-12-25 07:34:57,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:34:57,674 INFO L93 Difference]: Finished difference Result 270747 states and 469282 transitions. [2023-12-25 07:34:57,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:34:57,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 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 230 [2023-12-25 07:34:57,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:34:58,105 INFO L225 Difference]: With dead ends: 270747 [2023-12-25 07:34:58,106 INFO L226 Difference]: Without dead ends: 187761 [2023-12-25 07:34:58,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:34:58,192 INFO L413 NwaCegarLoop]: 1333 mSDtfsCounter, 185 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:34:58,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 2482 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:34:58,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187761 states. [2023-12-25 07:35:00,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187761 to 187759. [2023-12-25 07:35:01,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187759 states, 187758 states have (on average 1.7207256148872485) internal successors, (323080), 187758 states have internal predecessors, (323080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:35:01,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187759 states to 187759 states and 323080 transitions. [2023-12-25 07:35:01,942 INFO L78 Accepts]: Start accepts. Automaton has 187759 states and 323080 transitions. Word has length 230 [2023-12-25 07:35:01,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:35:01,943 INFO L495 AbstractCegarLoop]: Abstraction has 187759 states and 323080 transitions. [2023-12-25 07:35:01,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 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) [2023-12-25 07:35:01,943 INFO L276 IsEmpty]: Start isEmpty. Operand 187759 states and 323080 transitions. [2023-12-25 07:35:01,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-25 07:35:01,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:35:01,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:35:01,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-25 07:35:02,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:35:02,153 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:35:02,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:35:02,154 INFO L85 PathProgramCache]: Analyzing trace with hash -711928630, now seen corresponding path program 1 times [2023-12-25 07:35:02,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:35:02,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920194465] [2023-12-25 07:35:02,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:35:02,155 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:35:02,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:35:02,156 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:35:02,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-25 07:35:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:35:02,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:35:02,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:35:02,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:35:02,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:35:02,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:35:02,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920194465] [2023-12-25 07:35:02,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920194465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:35:02,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:35:02,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:35:02,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146463410] [2023-12-25 07:35:02,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:35:02,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:35:02,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:35:02,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:35:02,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:35:02,634 INFO L87 Difference]: Start difference. First operand 187759 states and 323080 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:35:05,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:35:05,747 INFO L93 Difference]: Finished difference Result 503013 states and 867987 transitions. [2023-12-25 07:35:05,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:35:05,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 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 231 [2023-12-25 07:35:05,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:35:06,527 INFO L225 Difference]: With dead ends: 503013 [2023-12-25 07:35:06,528 INFO L226 Difference]: Without dead ends: 319583 [2023-12-25 07:35:06,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:35:06,660 INFO L413 NwaCegarLoop]: 1182 mSDtfsCounter, 372 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:35:06,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 3665 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:35:06,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319583 states. [2023-12-25 07:35:11,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319583 to 282607. [2023-12-25 07:35:11,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282607 states, 282606 states have (on average 1.716481603362986) internal successors, (485088), 282606 states have internal predecessors, (485088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:35:12,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282607 states to 282607 states and 485088 transitions. [2023-12-25 07:35:12,385 INFO L78 Accepts]: Start accepts. Automaton has 282607 states and 485088 transitions. Word has length 231 [2023-12-25 07:35:12,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:35:12,386 INFO L495 AbstractCegarLoop]: Abstraction has 282607 states and 485088 transitions. [2023-12-25 07:35:12,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:35:12,386 INFO L276 IsEmpty]: Start isEmpty. Operand 282607 states and 485088 transitions. [2023-12-25 07:35:12,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-25 07:35:12,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:35:12,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:35:12,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-25 07:35:12,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:35:12,599 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:35:12,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:35:12,599 INFO L85 PathProgramCache]: Analyzing trace with hash -776738316, now seen corresponding path program 1 times [2023-12-25 07:35:12,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:35:12,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035197657] [2023-12-25 07:35:12,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:35:12,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:35:12,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:35:12,602 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:35:12,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-25 07:35:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:35:12,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:35:12,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:35:12,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:35:12,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:35:12,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:35:12,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035197657] [2023-12-25 07:35:12,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035197657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:35:12,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:35:12,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:35:12,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282800754] [2023-12-25 07:35:12,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:35:12,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:35:12,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:35:12,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:35:12,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:35:12,853 INFO L87 Difference]: Start difference. First operand 282607 states and 485088 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:35:17,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:35:17,081 INFO L93 Difference]: Finished difference Result 601123 states and 1033362 transitions. [2023-12-25 07:35:17,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:35:17,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 231 [2023-12-25 07:35:17,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:35:18,142 INFO L225 Difference]: With dead ends: 601123 [2023-12-25 07:35:18,142 INFO L226 Difference]: Without dead ends: 424921 [2023-12-25 07:35:18,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:35:18,309 INFO L413 NwaCegarLoop]: 1250 mSDtfsCounter, 153 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:35:18,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 2403 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:35:18,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424921 states. [2023-12-25 07:35:24,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424921 to 424919. [2023-12-25 07:35:25,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424919 states, 424918 states have (on average 1.708922662725514) internal successors, (726152), 424918 states have internal predecessors, (726152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:35:28,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424919 states to 424919 states and 726152 transitions. [2023-12-25 07:35:28,060 INFO L78 Accepts]: Start accepts. Automaton has 424919 states and 726152 transitions. Word has length 231 [2023-12-25 07:35:28,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:35:28,063 INFO L495 AbstractCegarLoop]: Abstraction has 424919 states and 726152 transitions. [2023-12-25 07:35:28,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:35:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 424919 states and 726152 transitions. [2023-12-25 07:35:28,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-25 07:35:28,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:35:28,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:35:28,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-25 07:35:28,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:35:28,860 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:35:28,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:35:28,861 INFO L85 PathProgramCache]: Analyzing trace with hash 29269522, now seen corresponding path program 1 times [2023-12-25 07:35:28,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:35:28,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093363979] [2023-12-25 07:35:28,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:35:28,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:35:28,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:35:28,865 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:35:28,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-25 07:35:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:35:29,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:35:29,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:35:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:35:29,164 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:35:29,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:35:29,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093363979] [2023-12-25 07:35:29,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093363979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:35:29,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:35:29,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:35:29,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834377188] [2023-12-25 07:35:29,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:35:29,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:35:29,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:35:29,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:35:29,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:35:29,168 INFO L87 Difference]: Start difference. First operand 424919 states and 726152 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:35:35,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:35:35,758 INFO L93 Difference]: Finished difference Result 836595 states and 1431466 transitions. [2023-12-25 07:35:35,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:35:35,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 231 [2023-12-25 07:35:35,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:35:37,582 INFO L225 Difference]: With dead ends: 836595 [2023-12-25 07:35:37,582 INFO L226 Difference]: Without dead ends: 606549 [2023-12-25 07:35:37,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:35:37,838 INFO L413 NwaCegarLoop]: 1284 mSDtfsCounter, 161 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:35:37,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 2436 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:35:38,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606549 states. [2023-12-25 07:35:47,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606549 to 606547. [2023-12-25 07:35:48,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606547 states, 606546 states have (on average 1.7013713716684307) internal successors, (1031960), 606546 states have internal predecessors, (1031960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:35:52,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606547 states to 606547 states and 1031960 transitions. [2023-12-25 07:35:52,737 INFO L78 Accepts]: Start accepts. Automaton has 606547 states and 1031960 transitions. Word has length 231 [2023-12-25 07:35:52,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:35:52,737 INFO L495 AbstractCegarLoop]: Abstraction has 606547 states and 1031960 transitions. [2023-12-25 07:35:52,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:35:52,738 INFO L276 IsEmpty]: Start isEmpty. Operand 606547 states and 1031960 transitions. [2023-12-25 07:35:52,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-25 07:35:52,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:35:52,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:35:52,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-12-25 07:35:52,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:35:52,949 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:35:52,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:35:52,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1784750858, now seen corresponding path program 1 times [2023-12-25 07:35:52,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:35:52,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749152048] [2023-12-25 07:35:52,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:35:52,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:35:52,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:35:52,954 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:35:52,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-25 07:35:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:35:53,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:35:53,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:35:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:35:53,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:35:53,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:35:53,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749152048] [2023-12-25 07:35:53,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749152048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:35:53,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:35:53,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:35:53,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124414426] [2023-12-25 07:35:53,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:35:53,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:35:53,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:35:53,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:35:53,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:35:53,330 INFO L87 Difference]: Start difference. First operand 606547 states and 1031960 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:36:03,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:36:03,949 INFO L93 Difference]: Finished difference Result 1358579 states and 2309734 transitions. [2023-12-25 07:36:03,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:36:03,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 231 [2023-12-25 07:36:03,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:36:08,600 INFO L225 Difference]: With dead ends: 1358579 [2023-12-25 07:36:08,601 INFO L226 Difference]: Without dead ends: 936509 [2023-12-25 07:36:09,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:36:09,332 INFO L413 NwaCegarLoop]: 1329 mSDtfsCounter, 177 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:36:09,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2479 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:36:10,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936509 states. [2023-12-25 07:36:25,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936509 to 936507. [2023-12-25 07:36:26,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936507 states, 936506 states have (on average 1.6875834217826688) internal successors, (1580432), 936506 states have internal predecessors, (1580432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:36:32,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936507 states to 936507 states and 1580432 transitions. [2023-12-25 07:36:32,155 INFO L78 Accepts]: Start accepts. Automaton has 936507 states and 1580432 transitions. Word has length 231 [2023-12-25 07:36:32,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:36:32,155 INFO L495 AbstractCegarLoop]: Abstraction has 936507 states and 1580432 transitions. [2023-12-25 07:36:32,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:36:32,155 INFO L276 IsEmpty]: Start isEmpty. Operand 936507 states and 1580432 transitions. [2023-12-25 07:36:32,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-12-25 07:36:32,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:36:32,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:36:32,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-25 07:36:32,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:36:32,368 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:36:32,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:36:32,369 INFO L85 PathProgramCache]: Analyzing trace with hash -657790293, now seen corresponding path program 1 times [2023-12-25 07:36:32,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:36:32,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247470958] [2023-12-25 07:36:32,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:36:32,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:36:32,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:36:32,371 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:36:32,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-25 07:36:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:36:32,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:36:32,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:36:32,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:36:32,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:36:32,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:36:32,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247470958] [2023-12-25 07:36:32,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247470958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:36:32,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:36:32,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:36:32,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556857633] [2023-12-25 07:36:32,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:36:32,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:36:32,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:36:32,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:36:32,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:36:32,959 INFO L87 Difference]: Start difference. First operand 936507 states and 1580432 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)