/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_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-98.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 21:04:46,666 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 21:04:46,702 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 21:04:46,705 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 21:04:46,706 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 21:04:46,718 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 21:04:46,719 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 21:04:46,719 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 21:04:46,719 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 21:04:46,720 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 21:04:46,720 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 21:04:46,720 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 21:04:46,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 21:04:46,721 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 21:04:46,721 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 21:04:46,721 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 21:04:46,721 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 21:04:46,721 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 21:04:46,722 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 21:04:46,722 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 21:04:46,722 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 21:04:46,722 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 21:04:46,723 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 21:04:46,723 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 21:04:46,723 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 21:04:46,723 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 21:04:46,724 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 21:04:46,724 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 21:04:46,724 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 21:04:46,724 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 21:04:46,725 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 21:04:46,725 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 21:04:46,725 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 21:04:46,725 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 21:04:46,725 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 21:04:46,726 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 21:04:46,726 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 21:04:46,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 21:04:46,726 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 21:04:46,726 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 21:04:46,727 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 21:04:46,727 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 21:04:46,727 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 21:04:46,727 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 21:04:46,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 21:04:46,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 21:04:46,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 21:04:46,882 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 21:04:46,883 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 21:04:46,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-98.i [2023-12-20 21:04:47,812 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 21:04:48,013 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 21:04:48,013 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-98.i [2023-12-20 21:04:48,020 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e57624dc1/e63adb99657648bd9807f530389be331/FLAG9bfb93c78 [2023-12-20 21:04:48,030 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e57624dc1/e63adb99657648bd9807f530389be331 [2023-12-20 21:04:48,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 21:04:48,034 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 21:04:48,035 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 21:04:48,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 21:04:48,039 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 21:04:48,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 09:04:48" (1/1) ... [2023-12-20 21:04:48,040 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40d765c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:04:48, skipping insertion in model container [2023-12-20 21:04:48,040 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 09:04:48" (1/1) ... [2023-12-20 21:04:48,070 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 21:04:48,165 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-pr-ci_file-98.i[919,932] [2023-12-20 21:04:48,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 21:04:48,226 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 21:04:48,235 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-pr-ci_file-98.i[919,932] [2023-12-20 21:04:48,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 21:04:48,277 INFO L206 MainTranslator]: Completed translation [2023-12-20 21:04:48,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:04:48 WrapperNode [2023-12-20 21:04:48,277 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 21:04:48,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 21:04:48,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 21:04:48,278 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 21:04:48,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:04:48" (1/1) ... [2023-12-20 21:04:48,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:04:48" (1/1) ... [2023-12-20 21:04:48,340 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 215 [2023-12-20 21:04:48,340 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 21:04:48,341 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 21:04:48,341 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 21:04:48,341 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 21:04:48,349 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:04:48" (1/1) ... [2023-12-20 21:04:48,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:04:48" (1/1) ... [2023-12-20 21:04:48,358 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:04:48" (1/1) ... [2023-12-20 21:04:48,371 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]. [2023-12-20 21:04:48,372 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:04:48" (1/1) ... [2023-12-20 21:04:48,372 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:04:48" (1/1) ... [2023-12-20 21:04:48,387 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:04:48" (1/1) ... [2023-12-20 21:04:48,390 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:04:48" (1/1) ... [2023-12-20 21:04:48,396 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:04:48" (1/1) ... [2023-12-20 21:04:48,398 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:04:48" (1/1) ... [2023-12-20 21:04:48,401 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 21:04:48,402 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 21:04:48,402 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 21:04:48,402 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 21:04:48,403 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:04:48" (1/1) ... [2023-12-20 21:04:48,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 21:04:48,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 21:04:48,425 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) [2023-12-20 21:04:48,440 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 [2023-12-20 21:04:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 21:04:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 21:04:48,459 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 21:04:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 21:04:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 21:04:48,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 21:04:48,548 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 21:04:48,550 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 21:04:48,889 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 21:04:48,917 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 21:04:48,917 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 21:04:48,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 09:04:48 BoogieIcfgContainer [2023-12-20 21:04:48,917 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 21:04:48,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 21:04:48,918 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 21:04:48,921 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 21:04:48,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 09:04:48" (1/3) ... [2023-12-20 21:04:48,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b73070a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 09:04:48, skipping insertion in model container [2023-12-20 21:04:48,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:04:48" (2/3) ... [2023-12-20 21:04:48,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b73070a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 09:04:48, skipping insertion in model container [2023-12-20 21:04:48,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 09:04:48" (3/3) ... [2023-12-20 21:04:48,922 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-98.i [2023-12-20 21:04:48,936 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 21:04:48,936 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 21:04:48,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 21:04:48,983 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;@4e99ce3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 21:04:48,984 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 21:04:48,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 50 states have internal predecessors, (71), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-20 21:04:49,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-20 21:04:49,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 21:04:49,013 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 21:04:49,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 21:04:49,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 21:04:49,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1361514502, now seen corresponding path program 1 times [2023-12-20 21:04:49,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 21:04:49,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068212738] [2023-12-20 21:04:49,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:04:49,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 21:04:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 21:04:49,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 21:04:49,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068212738] [2023-12-20 21:04:49,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 21:04:49,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948311469] [2023-12-20 21:04:49,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:04:49,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 21:04:49,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 21:04:49,194 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 21:04:49,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 21:04:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 21:04:49,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 21:04:49,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 21:04:49,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2023-12-20 21:04:49,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 21:04:49,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948311469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 21:04:49,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 21:04:49,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 21:04:49,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570680109] [2023-12-20 21:04:49,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 21:04:49,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 21:04:49,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 21:04:49,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 21:04:49,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 21:04:49,455 INFO L87 Difference]: Start difference. First operand has 85 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 50 states have internal predecessors, (71), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-20 21:04:49,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 21:04:49,506 INFO L93 Difference]: Finished difference Result 167 states and 305 transitions. [2023-12-20 21:04:49,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 21:04:49,508 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 202 [2023-12-20 21:04:49,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 21:04:49,515 INFO L225 Difference]: With dead ends: 167 [2023-12-20 21:04:49,515 INFO L226 Difference]: Without dead ends: 83 [2023-12-20 21:04:49,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 21:04:49,524 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 21:04:49,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 21:04:49,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-20 21:04:49,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-20 21:04:49,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-20 21:04:49,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 131 transitions. [2023-12-20 21:04:49,565 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 131 transitions. Word has length 202 [2023-12-20 21:04:49,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 21:04:49,565 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 131 transitions. [2023-12-20 21:04:49,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-20 21:04:49,566 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 131 transitions. [2023-12-20 21:04:49,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-20 21:04:49,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 21:04:49,576 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 21:04:49,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 21:04:49,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-20 21:04:49,782 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 21:04:49,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 21:04:49,783 INFO L85 PathProgramCache]: Analyzing trace with hash 465773240, now seen corresponding path program 1 times [2023-12-20 21:04:49,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 21:04:49,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434210734] [2023-12-20 21:04:49,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:04:49,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 21:04:49,846 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 21:04:49,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340890365] [2023-12-20 21:04:49,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:04:49,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 21:04:49,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 21:04:49,856 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 21:04:49,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 21:04:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 21:04:49,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-20 21:04:50,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 21:04:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1234 proven. 192 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2023-12-20 21:04:51,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 21:04:51,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-20 21:04:51,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 21:04:51,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434210734] [2023-12-20 21:04:51,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 21:04:51,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340890365] [2023-12-20 21:04:51,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340890365] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 21:04:51,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 21:04:51,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18] total 20 [2023-12-20 21:04:51,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085074905] [2023-12-20 21:04:51,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 21:04:51,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 21:04:51,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 21:04:51,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 21:04:51,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-12-20 21:04:51,494 INFO L87 Difference]: Start difference. First operand 83 states and 131 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-20 21:04:51,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 21:04:51,645 INFO L93 Difference]: Finished difference Result 217 states and 346 transitions. [2023-12-20 21:04:51,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 21:04:51,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 202 [2023-12-20 21:04:51,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 21:04:51,651 INFO L225 Difference]: With dead ends: 217 [2023-12-20 21:04:51,651 INFO L226 Difference]: Without dead ends: 135 [2023-12-20 21:04:51,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-12-20 21:04:51,655 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 90 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 21:04:51,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 180 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 21:04:51,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-12-20 21:04:51,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 83. [2023-12-20 21:04:51,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 48 states have internal predecessors, (64), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-20 21:04:51,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 130 transitions. [2023-12-20 21:04:51,673 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 130 transitions. Word has length 202 [2023-12-20 21:04:51,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 21:04:51,674 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 130 transitions. [2023-12-20 21:04:51,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-20 21:04:51,674 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 130 transitions. [2023-12-20 21:04:51,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-20 21:04:51,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 21:04:51,676 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 21:04:51,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 21:04:51,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-20 21:04:51,883 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 21:04:51,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 21:04:51,884 INFO L85 PathProgramCache]: Analyzing trace with hash 723938678, now seen corresponding path program 1 times [2023-12-20 21:04:51,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 21:04:51,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812168738] [2023-12-20 21:04:51,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:04:51,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 21:04:51,910 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 21:04:51,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [887730980] [2023-12-20 21:04:51,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:04:51,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 21:04:51,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 21:04:51,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 21:04:51,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 21:04:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 21:04:52,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 21:04:52,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 21:04:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-20 21:04:52,382 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 21:04:52,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 21:04:52,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812168738] [2023-12-20 21:04:52,382 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 21:04:52,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887730980] [2023-12-20 21:04:52,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887730980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 21:04:52,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 21:04:52,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 21:04:52,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050592039] [2023-12-20 21:04:52,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 21:04:52,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 21:04:52,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 21:04:52,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 21:04:52,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 21:04:52,385 INFO L87 Difference]: Start difference. First operand 83 states and 130 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-20 21:04:53,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 21:04:53,331 INFO L93 Difference]: Finished difference Result 401 states and 631 transitions. [2023-12-20 21:04:53,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 21:04:53,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 202 [2023-12-20 21:04:53,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 21:04:53,334 INFO L225 Difference]: With dead ends: 401 [2023-12-20 21:04:53,334 INFO L226 Difference]: Without dead ends: 319 [2023-12-20 21:04:53,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 21:04:53,335 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 330 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 21:04:53,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 693 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 21:04:53,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-12-20 21:04:53,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 161. [2023-12-20 21:04:53,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 92 states have (on average 1.3043478260869565) internal successors, (120), 92 states have internal predecessors, (120), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-20 21:04:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 252 transitions. [2023-12-20 21:04:53,372 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 252 transitions. Word has length 202 [2023-12-20 21:04:53,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 21:04:53,373 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 252 transitions. [2023-12-20 21:04:53,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-20 21:04:53,373 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 252 transitions. [2023-12-20 21:04:53,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-20 21:04:53,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 21:04:53,375 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 21:04:53,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 21:04:53,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 21:04:53,583 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 21:04:53,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 21:04:53,583 INFO L85 PathProgramCache]: Analyzing trace with hash 725785720, now seen corresponding path program 1 times [2023-12-20 21:04:53,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 21:04:53,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614610847] [2023-12-20 21:04:53,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:04:53,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 21:04:53,608 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 21:04:53,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899078175] [2023-12-20 21:04:53,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 21:04:53,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 21:04:53,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 21:04:53,613 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 21:04:53,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 21:04:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 21:04:53,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-20 21:04:53,761 INFO L285 TraceCheckSpWp]: Computing forward predicates...