/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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-21.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 16:07:32,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 16:07:32,372 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 16:07:32,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 16:07:32,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 16:07:32,407 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 16:07:32,408 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 16:07:32,408 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 16:07:32,409 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 16:07:32,413 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 16:07:32,414 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 16:07:32,414 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 16:07:32,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 16:07:32,415 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 16:07:32,416 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 16:07:32,416 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 16:07:32,416 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 16:07:32,417 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 16:07:32,417 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 16:07:32,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 16:07:32,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 16:07:32,418 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 16:07:32,418 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 16:07:32,418 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 16:07:32,418 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 16:07:32,418 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 16:07:32,419 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 16:07:32,419 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 16:07:32,419 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 16:07:32,419 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 16:07:32,420 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 16:07:32,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 16:07:32,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 16:07:32,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 16:07:32,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 16:07:32,421 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 16:07:32,421 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 16:07:32,421 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 16:07:32,421 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 16:07:32,422 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 16:07:32,422 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 16:07:32,422 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 16:07:32,423 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 16:07:32,423 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 16:07:32,423 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 16:07:32,423 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 16:07:32,424 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 16:07:32,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 16:07:32,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 16:07:32,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 16:07:32,685 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 16:07:32,686 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 16:07:32,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-21.i [2023-12-23 16:07:33,820 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 16:07:34,008 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 16:07:34,009 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-21.i [2023-12-23 16:07:34,016 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31e7adc40/034372c76b8d4886bc4902e9b881e63b/FLAG7bf21a0f3 [2023-12-23 16:07:34,029 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31e7adc40/034372c76b8d4886bc4902e9b881e63b [2023-12-23 16:07:34,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 16:07:34,032 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 16:07:34,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 16:07:34,033 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 16:07:34,037 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 16:07:34,038 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:07:34" (1/1) ... [2023-12-23 16:07:34,039 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cfa7ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:34, skipping insertion in model container [2023-12-23 16:07:34,039 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:07:34" (1/1) ... [2023-12-23 16:07:34,080 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 16:07:34,215 WARN L239 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_fillercode_fillercodestructure_filler-ps-co_file-21.i[919,932] [2023-12-23 16:07:34,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 16:07:34,341 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 16:07:34,355 WARN L239 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_fillercode_fillercodestructure_filler-ps-co_file-21.i[919,932] [2023-12-23 16:07:34,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 16:07:34,437 INFO L206 MainTranslator]: Completed translation [2023-12-23 16:07:34,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:34 WrapperNode [2023-12-23 16:07:34,439 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 16:07:34,440 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 16:07:34,441 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 16:07:34,441 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 16:07:34,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:34" (1/1) ... [2023-12-23 16:07:34,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:34" (1/1) ... [2023-12-23 16:07:34,496 INFO L138 Inliner]: procedures = 27, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 238 [2023-12-23 16:07:34,496 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 16:07:34,497 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 16:07:34,497 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 16:07:34,497 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 16:07:34,506 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:34" (1/1) ... [2023-12-23 16:07:34,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:34" (1/1) ... [2023-12-23 16:07:34,520 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:34" (1/1) ... [2023-12-23 16:07:34,538 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]. [2023-12-23 16:07:34,538 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:34" (1/1) ... [2023-12-23 16:07:34,539 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:34" (1/1) ... [2023-12-23 16:07:34,560 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:34" (1/1) ... [2023-12-23 16:07:34,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:34" (1/1) ... [2023-12-23 16:07:34,566 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:34" (1/1) ... [2023-12-23 16:07:34,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:34" (1/1) ... [2023-12-23 16:07:34,571 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 16:07:34,572 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 16:07:34,572 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 16:07:34,572 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 16:07:34,573 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:34" (1/1) ... [2023-12-23 16:07:34,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 16:07:34,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 16:07:34,600 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) [2023-12-23 16:07:34,604 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 [2023-12-23 16:07:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 16:07:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 16:07:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 16:07:34,623 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 16:07:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 16:07:34,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 16:07:34,697 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 16:07:34,698 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 16:07:37,535 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 16:07:37,611 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 16:07:37,611 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 16:07:37,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:07:37 BoogieIcfgContainer [2023-12-23 16:07:37,612 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 16:07:37,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 16:07:37,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 16:07:37,617 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 16:07:37,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:07:34" (1/3) ... [2023-12-23 16:07:37,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe77380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:07:37, skipping insertion in model container [2023-12-23 16:07:37,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:07:34" (2/3) ... [2023-12-23 16:07:37,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe77380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:07:37, skipping insertion in model container [2023-12-23 16:07:37,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:07:37" (3/3) ... [2023-12-23 16:07:37,620 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-21.i [2023-12-23 16:07:37,635 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 16:07:37,635 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 16:07:37,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 16:07:37,682 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;@260f76a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 16:07:37,683 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 16:07:37,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 57 states have (on average 1.4035087719298245) internal successors, (80), 58 states have internal predecessors, (80), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-23 16:07:37,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-23 16:07:37,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:07:37,716 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:07:37,716 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:07:37,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:07:37,723 INFO L85 PathProgramCache]: Analyzing trace with hash 323498168, now seen corresponding path program 1 times [2023-12-23 16:07:37,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:07:37,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200418322] [2023-12-23 16:07:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:07:37,738 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 [2023-12-23 16:07:37,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:07:37,740 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) [2023-12-23 16:07:37,772 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 [2023-12-23 16:07:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:07:38,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 16:07:38,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:07:38,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1374 proven. 0 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2023-12-23 16:07:38,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 16:07:38,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 16:07:38,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200418322] [2023-12-23 16:07:38,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200418322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 16:07:38,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 16:07:38,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 16:07:38,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728920443] [2023-12-23 16:07:38,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 16:07:38,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 16:07:38,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 16:07:38,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 16:07:38,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 16:07:38,327 INFO L87 Difference]: Start difference. First operand has 100 states, 57 states have (on average 1.4035087719298245) internal successors, (80), 58 states have internal predecessors, (80), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2023-12-23 16:07:38,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 16:07:38,980 INFO L93 Difference]: Finished difference Result 197 states and 358 transitions. [2023-12-23 16:07:39,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 16:07:39,003 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 245 [2023-12-23 16:07:39,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 16:07:39,011 INFO L225 Difference]: With dead ends: 197 [2023-12-23 16:07:39,011 INFO L226 Difference]: Without dead ends: 98 [2023-12-23 16:07:39,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 16:07:39,023 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-23 16:07:39,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-23 16:07:39,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-23 16:07:39,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-12-23 16:07:39,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 56 states have internal predecessors, (72), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-23 16:07:39,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 152 transitions. [2023-12-23 16:07:39,074 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 152 transitions. Word has length 245 [2023-12-23 16:07:39,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 16:07:39,074 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 152 transitions. [2023-12-23 16:07:39,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2023-12-23 16:07:39,075 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 152 transitions. [2023-12-23 16:07:39,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-23 16:07:39,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:07:39,080 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:07:39,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-23 16:07:39,294 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 [2023-12-23 16:07:39,294 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:07:39,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:07:39,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1313337166, now seen corresponding path program 1 times [2023-12-23 16:07:39,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:07:39,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094949510] [2023-12-23 16:07:39,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:07:39,297 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 [2023-12-23 16:07:39,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:07:39,298 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) [2023-12-23 16:07:39,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-23 16:07:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:07:39,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 16:07:39,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:07:40,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 543 proven. 9 refuted. 0 times theorem prover too weak. 2568 trivial. 0 not checked. [2023-12-23 16:07:40,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 16:07:40,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 16:07:40,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094949510] [2023-12-23 16:07:40,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094949510] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 16:07:40,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [687302869] [2023-12-23 16:07:40,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:07:40,442 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 16:07:40,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 16:07:40,482 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 16:07:40,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-23 16:07:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:07:41,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 16:07:41,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:07:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 543 proven. 9 refuted. 0 times theorem prover too weak. 2568 trivial. 0 not checked. [2023-12-23 16:07:42,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 16:07:42,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [687302869] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 16:07:42,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 16:07:42,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-23 16:07:42,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376049683] [2023-12-23 16:07:42,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 16:07:42,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-23 16:07:42,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 16:07:42,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-23 16:07:42,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-23 16:07:42,069 INFO L87 Difference]: Start difference. First operand 98 states and 152 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2023-12-23 16:07:43,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 16:07:43,823 INFO L93 Difference]: Finished difference Result 286 states and 442 transitions. [2023-12-23 16:07:43,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 16:07:43,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 245 [2023-12-23 16:07:43,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 16:07:43,827 INFO L225 Difference]: With dead ends: 286 [2023-12-23 16:07:43,828 INFO L226 Difference]: Without dead ends: 189 [2023-12-23 16:07:43,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-12-23 16:07:43,829 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 81 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-23 16:07:43,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 502 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-23 16:07:43,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-23 16:07:43,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 182. [2023-12-23 16:07:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 98 states have (on average 1.2244897959183674) internal successors, (120), 98 states have internal predecessors, (120), 80 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-23 16:07:43,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 280 transitions. [2023-12-23 16:07:43,914 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 280 transitions. Word has length 245 [2023-12-23 16:07:43,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 16:07:43,916 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 280 transitions. [2023-12-23 16:07:43,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2023-12-23 16:07:43,916 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 280 transitions. [2023-12-23 16:07:43,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-12-23 16:07:43,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:07:43,923 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:07:43,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-12-23 16:07:44,146 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 [2023-12-23 16:07:44,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-23 16:07:44,337 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:07:44,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:07:44,337 INFO L85 PathProgramCache]: Analyzing trace with hash -162002333, now seen corresponding path program 1 times [2023-12-23 16:07:44,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:07:44,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410098388] [2023-12-23 16:07:44,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:07:44,338 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 16:07:44,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:07:44,340 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) [2023-12-23 16:07:44,340 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 [2023-12-23 16:07:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:07:44,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 16:07:44,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:07:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-23 16:07:45,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 16:07:45,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 16:07:45,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410098388] [2023-12-23 16:07:45,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410098388] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 16:07:45,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 16:07:45,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 16:07:45,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499842243] [2023-12-23 16:07:45,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 16:07:45,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 16:07:45,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 16:07:45,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 16:07:45,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:07:45,120 INFO L87 Difference]: Start difference. First operand 182 states and 280 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-23 16:07:46,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 16:07:46,942 INFO L93 Difference]: Finished difference Result 383 states and 591 transitions. [2023-12-23 16:07:46,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 16:07:46,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 246 [2023-12-23 16:07:46,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 16:07:46,946 INFO L225 Difference]: With dead ends: 383 [2023-12-23 16:07:46,946 INFO L226 Difference]: Without dead ends: 276 [2023-12-23 16:07:46,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:07:46,948 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 28 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-23 16:07:46,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 288 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-23 16:07:46,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-12-23 16:07:46,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 274. [2023-12-23 16:07:46,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 149 states have (on average 1.2080536912751678) internal successors, (180), 149 states have internal predecessors, (180), 120 states have call successors, (120), 4 states have call predecessors, (120), 4 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-23 16:07:46,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 420 transitions. [2023-12-23 16:07:46,978 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 420 transitions. Word has length 246 [2023-12-23 16:07:46,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 16:07:46,979 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 420 transitions. [2023-12-23 16:07:46,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-23 16:07:46,980 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 420 transitions. [2023-12-23 16:07:46,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-12-23 16:07:46,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:07:46,982 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:07:47,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-23 16:07:47,195 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 [2023-12-23 16:07:47,196 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:07:47,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:07:47,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1173119583, now seen corresponding path program 1 times [2023-12-23 16:07:47,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:07:47,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811371290] [2023-12-23 16:07:47,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:07:47,198 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 [2023-12-23 16:07:47,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:07:47,200 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) [2023-12-23 16:07:47,201 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 [2023-12-23 16:07:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:07:47,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-23 16:07:47,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:10:01,084 WARN L293 SmtUtils]: Spent 40.29s on a formula simplification that was a NOOP. DAG size: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 16:11:41,861 WARN L293 SmtUtils]: Spent 43.91s on a formula simplification that was a NOOP. DAG size: 93 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 16:14:17,362 WARN L293 SmtUtils]: Spent 44.18s on a formula simplification that was a NOOP. DAG size: 100 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)