/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-61.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 08:41:45,503 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 08:41:45,538 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 08:41:45,540 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 08:41:45,540 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 08:41:45,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 08:41:45,559 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 08:41:45,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 08:41:45,560 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 08:41:45,560 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 08:41:45,560 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 08:41:45,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 08:41:45,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 08:41:45,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 08:41:45,561 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 08:41:45,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 08:41:45,562 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 08:41:45,562 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 08:41:45,562 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 08:41:45,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 08:41:45,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 08:41:45,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 08:41:45,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 08:41:45,566 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 08:41:45,566 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 08:41:45,566 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 08:41:45,566 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 08:41:45,566 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 08:41:45,567 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 08:41:45,567 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 08:41:45,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 08:41:45,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 08:41:45,567 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 08:41:45,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 08:41:45,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 08:41:45,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 08:41:45,568 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 08:41:45,568 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 08:41:45,568 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 08:41:45,569 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 08:41:45,569 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 08:41:45,571 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 08:41:45,572 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 08:41:45,572 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 08:41:45,572 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-03 08:41:45,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 08:41:45,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 08:41:45,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 08:41:45,775 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 08:41:45,775 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 08:41:45,776 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-61.i [2024-11-03 08:41:47,125 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 08:41:47,333 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 08:41:47,334 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-61.i [2024-11-03 08:41:47,346 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2688c51fb/9d70778a1d95443689131c6bbff02715/FLAG4f8f71281 [2024-11-03 08:41:47,689 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2688c51fb/9d70778a1d95443689131c6bbff02715 [2024-11-03 08:41:47,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 08:41:47,692 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 08:41:47,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 08:41:47,693 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 08:41:47,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 08:41:47,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 08:41:47" (1/1) ... [2024-11-03 08:41:47,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f88c5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:41:47, skipping insertion in model container [2024-11-03 08:41:47,700 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 08:41:47" (1/1) ... [2024-11-03 08:41:47,769 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 08:41:47,916 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-61.i[916,929] [2024-11-03 08:41:48,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 08:41:48,168 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 08:41:48,193 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-61.i[916,929] [2024-11-03 08:41:48,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 08:41:48,415 INFO L204 MainTranslator]: Completed translation [2024-11-03 08:41:48,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:41:48 WrapperNode [2024-11-03 08:41:48,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 08:41:48,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 08:41:48,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 08:41:48,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 08:41:48,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:41:48" (1/1) ... [2024-11-03 08:41:48,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:41:48" (1/1) ... [2024-11-03 08:41:48,530 INFO L138 Inliner]: procedures = 27, calls = 79, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 576 [2024-11-03 08:41:48,531 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 08:41:48,532 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 08:41:48,532 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 08:41:48,532 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 08:41:48,543 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:41:48" (1/1) ... [2024-11-03 08:41:48,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:41:48" (1/1) ... [2024-11-03 08:41:48,552 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:41:48" (1/1) ... [2024-11-03 08:41:48,577 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]. [2024-11-03 08:41:48,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:41:48" (1/1) ... [2024-11-03 08:41:48,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:41:48" (1/1) ... [2024-11-03 08:41:48,605 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:41:48" (1/1) ... [2024-11-03 08:41:48,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:41:48" (1/1) ... [2024-11-03 08:41:48,624 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:41:48" (1/1) ... [2024-11-03 08:41:48,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:41:48" (1/1) ... [2024-11-03 08:41:48,645 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 08:41:48,646 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 08:41:48,646 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 08:41:48,646 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 08:41:48,647 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:41:48" (1/1) ... [2024-11-03 08:41:48,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 08:41:48,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 08:41:48,673 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) [2024-11-03 08:41:48,680 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 [2024-11-03 08:41:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 08:41:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 08:41:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 08:41:48,718 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 08:41:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 08:41:48,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 08:41:48,831 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 08:41:48,834 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 08:42:23,681 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2024-11-03 08:42:23,681 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 08:42:23,707 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 08:42:23,707 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 08:42:23,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 08:42:23 BoogieIcfgContainer [2024-11-03 08:42:23,707 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 08:42:23,710 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 08:42:23,710 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 08:42:23,713 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 08:42:23,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 08:41:47" (1/3) ... [2024-11-03 08:42:23,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a314bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 08:42:23, skipping insertion in model container [2024-11-03 08:42:23,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:41:48" (2/3) ... [2024-11-03 08:42:23,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a314bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 08:42:23, skipping insertion in model container [2024-11-03 08:42:23,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 08:42:23" (3/3) ... [2024-11-03 08:42:23,715 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-61.i [2024-11-03 08:42:23,727 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 08:42:23,728 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 08:42:23,842 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 08:42:23,847 INFO L333 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, 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;@376c629e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 08:42:23,848 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 08:42:23,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 236 states, 167 states have (on average 1.5808383233532934) internal successors, (264), 168 states have internal predecessors, (264), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-03 08:42:23,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2024-11-03 08:42:23,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 08:42:23,877 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 08:42:23,878 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 08:42:23,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 08:42:23,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1462827840, now seen corresponding path program 1 times [2024-11-03 08:42:23,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 08:42:23,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756613868] [2024-11-03 08:42:23,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 08:42:23,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-03 08:42:23,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-03 08:42:23,894 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) [2024-11-03 08:42:23,896 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 [2024-11-03 08:42:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 08:42:25,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-03 08:42:25,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 08:43:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 3233 proven. 147 refuted. 0 times theorem prover too weak. 5200 trivial. 0 not checked. [2024-11-03 08:43:00,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 08:43:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 48 proven. 147 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2024-11-03 08:43:19,654 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 08:43:19,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756613868] [2024-11-03 08:43:19,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1756613868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 08:43:19,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 08:43:19,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2024-11-03 08:43:19,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217953482] [2024-11-03 08:43:19,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 08:43:19,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-03 08:43:19,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 08:43:19,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-03 08:43:19,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-03 08:43:19,685 INFO L87 Difference]: Start difference. First operand has 236 states, 167 states have (on average 1.5808383233532934) internal successors, (264), 168 states have internal predecessors, (264), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 14 states, 14 states have (on average 13.214285714285714) internal successors, (185), 14 states have internal predecessors, (185), 4 states have call successors, (132), 3 states have call predecessors, (132), 5 states have return successors, (132), 4 states have call predecessors, (132), 4 states have call successors, (132)