/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_loopvsstraightlinecode_50-while_file-65.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 04:17:16,484 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 04:17:16,550 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 04:17:16,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 04:17:16,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 04:17:16,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 04:17:16,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 04:17:16,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 04:17:16,578 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 04:17:16,581 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 04:17:16,581 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 04:17:16,582 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 04:17:16,582 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 04:17:16,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 04:17:16,583 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 04:17:16,583 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 04:17:16,583 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 04:17:16,584 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 04:17:16,584 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 04:17:16,585 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 04:17:16,585 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 04:17:16,585 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 04:17:16,585 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 04:17:16,585 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 04:17:16,586 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 04:17:16,586 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 04:17:16,586 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 04:17:16,586 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 04:17:16,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 04:17:16,586 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 04:17:16,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 04:17:16,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 04:17:16,587 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 04:17:16,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 04:17:16,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 04:17:16,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 04:17:16,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 04:17:16,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 04:17:16,588 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 04:17:16,588 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 04:17:16,588 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 04:17:16,588 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 04:17:16,588 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 04:17:16,588 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 04:17:16,589 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 04:17:16,589 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 04:17:16,589 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 04:17:16,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 04:17:16,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 04:17:16,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 04:17:16,806 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 04:17:16,807 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 04:17:16,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-65.i [2023-12-24 04:17:17,913 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 04:17:18,102 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 04:17:18,102 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-65.i [2023-12-24 04:17:18,109 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2e58e0c0/b200c433a6da4fb38271fe7e66f2c553/FLAGd447d91c8 [2023-12-24 04:17:18,118 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2e58e0c0/b200c433a6da4fb38271fe7e66f2c553 [2023-12-24 04:17:18,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 04:17:18,121 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 04:17:18,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 04:17:18,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 04:17:18,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 04:17:18,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:17:18" (1/1) ... [2023-12-24 04:17:18,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f30f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:17:18, skipping insertion in model container [2023-12-24 04:17:18,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:17:18" (1/1) ... [2023-12-24 04:17:18,149 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 04:17:18,248 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_loopvsstraightlinecode_50-while_file-65.i[915,928] [2023-12-24 04:17:18,286 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 04:17:18,308 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 04:17:18,317 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_loopvsstraightlinecode_50-while_file-65.i[915,928] [2023-12-24 04:17:18,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 04:17:18,350 INFO L206 MainTranslator]: Completed translation [2023-12-24 04:17:18,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:17:18 WrapperNode [2023-12-24 04:17:18,351 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 04:17:18,352 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 04:17:18,352 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 04:17:18,352 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 04:17:18,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:17:18" (1/1) ... [2023-12-24 04:17:18,368 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:17:18" (1/1) ... [2023-12-24 04:17:18,386 INFO L138 Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 137 [2023-12-24 04:17:18,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 04:17:18,387 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 04:17:18,387 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 04:17:18,387 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 04:17:18,401 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:17:18" (1/1) ... [2023-12-24 04:17:18,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:17:18" (1/1) ... [2023-12-24 04:17:18,405 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:17:18" (1/1) ... [2023-12-24 04:17:18,415 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]. [2023-12-24 04:17:18,415 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:17:18" (1/1) ... [2023-12-24 04:17:18,415 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:17:18" (1/1) ... [2023-12-24 04:17:18,421 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:17:18" (1/1) ... [2023-12-24 04:17:18,424 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:17:18" (1/1) ... [2023-12-24 04:17:18,426 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:17:18" (1/1) ... [2023-12-24 04:17:18,427 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:17:18" (1/1) ... [2023-12-24 04:17:18,430 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 04:17:18,439 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 04:17:18,439 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 04:17:18,439 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 04:17:18,440 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:17:18" (1/1) ... [2023-12-24 04:17:18,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 04:17:18,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 04:17:18,464 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) [2023-12-24 04:17:18,471 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 [2023-12-24 04:17:18,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 04:17:18,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 04:17:18,487 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 04:17:18,488 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 04:17:18,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 04:17:18,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 04:17:18,576 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 04:17:18,579 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 04:17:19,615 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 04:17:19,691 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 04:17:19,691 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 04:17:19,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:17:19 BoogieIcfgContainer [2023-12-24 04:17:19,692 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 04:17:19,693 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 04:17:19,693 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 04:17:19,695 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 04:17:19,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 04:17:18" (1/3) ... [2023-12-24 04:17:19,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588d30d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:17:19, skipping insertion in model container [2023-12-24 04:17:19,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:17:18" (2/3) ... [2023-12-24 04:17:19,697 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588d30d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:17:19, skipping insertion in model container [2023-12-24 04:17:19,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:17:19" (3/3) ... [2023-12-24 04:17:19,698 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-65.i [2023-12-24 04:17:19,724 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 04:17:19,725 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 04:17:19,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 04:17:19,771 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;@13a68445, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 04:17:19,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 04:17:19,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 31 states have internal predecessors, (43), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 04:17:19,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 04:17:19,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 04:17:19,786 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 04:17:19,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 04:17:19,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 04:17:19,793 INFO L85 PathProgramCache]: Analyzing trace with hash -332515944, now seen corresponding path program 1 times [2023-12-24 04:17:19,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 04:17:19,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221063390] [2023-12-24 04:17:19,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 04:17:19,806 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 [2023-12-24 04:17:19,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 04:17:19,820 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) [2023-12-24 04:17:19,821 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 [2023-12-24 04:17:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 04:17:20,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 04:17:20,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 04:17:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-12-24 04:17:20,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 04:17:20,078 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 04:17:20,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221063390] [2023-12-24 04:17:20,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221063390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 04:17:20,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 04:17:20,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 04:17:20,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544374301] [2023-12-24 04:17:20,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 04:17:20,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 04:17:20,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 04:17:20,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 04:17:20,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 04:17:20,107 INFO L87 Difference]: Start difference. First operand has 51 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 31 states have internal predecessors, (43), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 04:17:20,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 04:17:20,671 INFO L93 Difference]: Finished difference Result 99 states and 174 transitions. [2023-12-24 04:17:20,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 04:17:20,690 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 112 [2023-12-24 04:17:20,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 04:17:20,696 INFO L225 Difference]: With dead ends: 99 [2023-12-24 04:17:20,696 INFO L226 Difference]: Without dead ends: 49 [2023-12-24 04:17:20,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 04:17:20,703 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 04:17:20,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 04:17:20,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-24 04:17:20,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-24 04:17:20,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 04:17:20,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 73 transitions. [2023-12-24 04:17:20,741 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 73 transitions. Word has length 112 [2023-12-24 04:17:20,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 04:17:20,742 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 73 transitions. [2023-12-24 04:17:20,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 04:17:20,742 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 73 transitions. [2023-12-24 04:17:20,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 04:17:20,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 04:17:20,744 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 04:17:20,753 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 [2023-12-24 04:17:20,945 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 [2023-12-24 04:17:20,946 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 04:17:20,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 04:17:20,948 INFO L85 PathProgramCache]: Analyzing trace with hash 244131100, now seen corresponding path program 1 times [2023-12-24 04:17:20,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 04:17:20,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914370782] [2023-12-24 04:17:20,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 04:17:20,952 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 [2023-12-24 04:17:20,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 04:17:20,954 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) [2023-12-24 04:17:20,956 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 [2023-12-24 04:17:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 04:17:21,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 04:17:21,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 04:17:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 04:17:21,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 04:17:21,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 04:17:21,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914370782] [2023-12-24 04:17:21,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914370782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 04:17:21,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 04:17:21,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 04:17:21,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918194363] [2023-12-24 04:17:21,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 04:17:21,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 04:17:21,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 04:17:21,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 04:17:21,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 04:17:21,492 INFO L87 Difference]: Start difference. First operand 49 states and 73 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 04:17:22,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 04:17:22,378 INFO L93 Difference]: Finished difference Result 145 states and 217 transitions. [2023-12-24 04:17:22,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 04:17:22,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 112 [2023-12-24 04:17:22,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 04:17:22,382 INFO L225 Difference]: With dead ends: 145 [2023-12-24 04:17:22,382 INFO L226 Difference]: Without dead ends: 97 [2023-12-24 04:17:22,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 04:17:22,383 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 14 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 04:17:22,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 140 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 04:17:22,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-24 04:17:22,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2023-12-24 04:17:22,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 states have internal predecessors, (71), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 04:17:22,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 143 transitions. [2023-12-24 04:17:22,433 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 143 transitions. Word has length 112 [2023-12-24 04:17:22,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 04:17:22,433 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 143 transitions. [2023-12-24 04:17:22,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 04:17:22,434 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 143 transitions. [2023-12-24 04:17:22,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 04:17:22,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 04:17:22,435 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 04:17:22,457 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 [2023-12-24 04:17:22,636 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 [2023-12-24 04:17:22,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 04:17:22,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 04:17:22,637 INFO L85 PathProgramCache]: Analyzing trace with hash 242284058, now seen corresponding path program 1 times [2023-12-24 04:17:22,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 04:17:22,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553809395] [2023-12-24 04:17:22,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 04:17:22,638 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 [2023-12-24 04:17:22,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 04:17:22,639 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) [2023-12-24 04:17:22,669 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 [2023-12-24 04:17:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 04:17:22,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 04:17:22,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 04:17:23,068 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 293 proven. 33 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-12-24 04:17:23,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 04:17:23,257 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 18 proven. 33 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-24 04:17:23,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 04:17:23,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553809395] [2023-12-24 04:17:23,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553809395] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 04:17:23,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 04:17:23,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-24 04:17:23,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227090450] [2023-12-24 04:17:23,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 04:17:23,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 04:17:23,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 04:17:23,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 04:17:23,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-24 04:17:23,269 INFO L87 Difference]: Start difference. First operand 95 states and 143 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-24 04:17:24,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 04:17:24,669 INFO L93 Difference]: Finished difference Result 167 states and 243 transitions. [2023-12-24 04:17:24,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 04:17:24,670 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 112 [2023-12-24 04:17:24,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 04:17:24,671 INFO L225 Difference]: With dead ends: 167 [2023-12-24 04:17:24,672 INFO L226 Difference]: Without dead ends: 119 [2023-12-24 04:17:24,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2023-12-24 04:17:24,673 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 105 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 04:17:24,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 122 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 04:17:24,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-24 04:17:24,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 112. [2023-12-24 04:17:24,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 66 states have internal predecessors, (79), 42 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 04:17:24,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 163 transitions. [2023-12-24 04:17:24,699 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 163 transitions. Word has length 112 [2023-12-24 04:17:24,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 04:17:24,700 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 163 transitions. [2023-12-24 04:17:24,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-24 04:17:24,700 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 163 transitions. [2023-12-24 04:17:24,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 04:17:24,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 04:17:24,701 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 04:17:24,708 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 [2023-12-24 04:17:24,908 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 [2023-12-24 04:17:24,909 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 04:17:24,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 04:17:24,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1031490062, now seen corresponding path program 1 times [2023-12-24 04:17:24,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 04:17:24,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326734345] [2023-12-24 04:17:24,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 04:17:24,910 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 [2023-12-24 04:17:24,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 04:17:24,914 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) [2023-12-24 04:17:24,951 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 [2023-12-24 04:17:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 04:17:25,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 04:17:25,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 04:17:25,222 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-24 04:17:25,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 04:17:25,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 04:17:25,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326734345] [2023-12-24 04:17:25,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326734345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 04:17:25,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 04:17:25,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 04:17:25,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422409886] [2023-12-24 04:17:25,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 04:17:25,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 04:17:25,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 04:17:25,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 04:17:25,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 04:17:25,225 INFO L87 Difference]: Start difference. First operand 112 states and 163 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 04:17:26,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 04:17:26,456 INFO L93 Difference]: Finished difference Result 275 states and 382 transitions. [2023-12-24 04:17:26,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 04:17:26,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 113 [2023-12-24 04:17:26,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 04:17:26,459 INFO L225 Difference]: With dead ends: 275 [2023-12-24 04:17:26,459 INFO L226 Difference]: Without dead ends: 173 [2023-12-24 04:17:26,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2023-12-24 04:17:26,461 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 94 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 04:17:26,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 217 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 04:17:26,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-24 04:17:26,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 90. [2023-12-24 04:17:26,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 50 states have (on average 1.12) internal successors, (56), 51 states have internal predecessors, (56), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 04:17:26,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 124 transitions. [2023-12-24 04:17:26,474 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 124 transitions. Word has length 113 [2023-12-24 04:17:26,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 04:17:26,475 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 124 transitions. [2023-12-24 04:17:26,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 04:17:26,475 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 124 transitions. [2023-12-24 04:17:26,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 04:17:26,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 04:17:26,476 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 04:17:26,489 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 [2023-12-24 04:17:26,683 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 [2023-12-24 04:17:26,683 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 04:17:26,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 04:17:26,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1031430480, now seen corresponding path program 1 times [2023-12-24 04:17:26,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 04:17:26,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563482898] [2023-12-24 04:17:26,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 04:17:26,685 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 [2023-12-24 04:17:26,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 04:17:26,686 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) [2023-12-24 04:17:26,686 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 [2023-12-24 04:17:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 04:17:26,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 04:17:26,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 04:17:57,008 WARN L293 SmtUtils]: Spent 10.46s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 04:18:26,638 WARN L293 SmtUtils]: Spent 12.05s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 04:19:04,988 WARN L293 SmtUtils]: Spent 17.33s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)