/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:04:26,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:04:26,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:04:26,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 01:04:26,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 01:04:26,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 01:04:26,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 01:04:26,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 01:04:26,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 01:04:27,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 01:04:27,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 01:04:27,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 01:04:27,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 01:04:27,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 01:04:27,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 01:04:27,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 01:04:27,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 01:04:27,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:04:27,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:04:27,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:04:27,058 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 01:04:27,080 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:04:27,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:04:27,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:04:27,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:04:27,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:04:27,081 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:04:27,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:04:27,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:04:27,081 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:04:27,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:04:27,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:04:27,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:04:27,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:04:27,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:04:27,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:04:27,082 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:04:27,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:04:27,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:04:27,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:04:27,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:04:27,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:04:27,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:04:27,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:04:27,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:04:27,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:04:27,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:04:27,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:04:27,083 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:04:27,085 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:04:27,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:04:27,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:04:27,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:04:27,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:04:27,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:04:27,251 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:04:27,252 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:04:27,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2022-01-10 01:04:27,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f639fa16/94a6972645044e05b8119e11d034bde0/FLAGbf21177fb [2022-01-10 01:04:27,630 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:04:27,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2022-01-10 01:04:27,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f639fa16/94a6972645044e05b8119e11d034bde0/FLAGbf21177fb [2022-01-10 01:04:27,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f639fa16/94a6972645044e05b8119e11d034bde0 [2022-01-10 01:04:27,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:04:27,652 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:04:27,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:04:27,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:04:27,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:04:27,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:04:27" (1/1) ... [2022-01-10 01:04:27,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d3cbe49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:27, skipping insertion in model container [2022-01-10 01:04:27,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:04:27" (1/1) ... [2022-01-10 01:04:27,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:04:27,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:04:27,907 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c[502,515] [2022-01-10 01:04:27,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:04:27,953 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:04:27,976 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c[502,515] [2022-01-10 01:04:27,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:04:28,001 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:04:28,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:28 WrapperNode [2022-01-10 01:04:28,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:04:28,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:04:28,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:04:28,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:04:28,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:28" (1/1) ... [2022-01-10 01:04:28,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:28" (1/1) ... [2022-01-10 01:04:28,025 INFO L137 Inliner]: procedures = 19, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2022-01-10 01:04:28,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:04:28,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:04:28,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:04:28,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:04:28,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:28" (1/1) ... [2022-01-10 01:04:28,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:28" (1/1) ... [2022-01-10 01:04:28,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:28" (1/1) ... [2022-01-10 01:04:28,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:28" (1/1) ... [2022-01-10 01:04:28,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:28" (1/1) ... [2022-01-10 01:04:28,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:28" (1/1) ... [2022-01-10 01:04:28,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:28" (1/1) ... [2022-01-10 01:04:28,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:04:28,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:04:28,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:04:28,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:04:28,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:28" (1/1) ... [2022-01-10 01:04:28,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:04:28,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:28,091 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 01:04:28,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 01:04:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:04:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-10 01:04:28,120 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-10 01:04:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:04:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure check [2022-01-10 01:04:28,121 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2022-01-10 01:04:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 01:04:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:04:28,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:04:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-10 01:04:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-10 01:04:28,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-10 01:04:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 01:04:28,166 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:04:28,168 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:04:28,273 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:04:28,277 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:04:28,277 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 01:04:28,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:04:28 BoogieIcfgContainer [2022-01-10 01:04:28,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:04:28,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:04:28,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:04:28,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:04:28,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:04:27" (1/3) ... [2022-01-10 01:04:28,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5e0372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:04:28, skipping insertion in model container [2022-01-10 01:04:28,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:28" (2/3) ... [2022-01-10 01:04:28,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5e0372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:04:28, skipping insertion in model container [2022-01-10 01:04:28,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:04:28" (3/3) ... [2022-01-10 01:04:28,283 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2022-01-10 01:04:28,286 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:04:28,286 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:04:28,326 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:04:28,330 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 01:04:28,330 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:04:28,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-10 01:04:28,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 01:04:28,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:28,343 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:28,344 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:28,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:28,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1093965153, now seen corresponding path program 1 times [2022-01-10 01:04:28,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:28,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109563967] [2022-01-10 01:04:28,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:28,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:28,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:28,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-10 01:04:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:04:28,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:28,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109563967] [2022-01-10 01:04:28,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109563967] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:28,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:28,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 01:04:28,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416100675] [2022-01-10 01:04:28,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:28,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 01:04:28,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:28,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 01:04:28,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 01:04:28,506 INFO L87 Difference]: Start difference. First operand has 37 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 01:04:28,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:28,525 INFO L93 Difference]: Finished difference Result 71 states and 96 transitions. [2022-01-10 01:04:28,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 01:04:28,527 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-01-10 01:04:28,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:28,532 INFO L225 Difference]: With dead ends: 71 [2022-01-10 01:04:28,533 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 01:04:28,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 01:04:28,538 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:28,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:04:28,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 01:04:28,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-01-10 01:04:28,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-10 01:04:28,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-01-10 01:04:28,576 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 23 [2022-01-10 01:04:28,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:28,576 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-01-10 01:04:28,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 01:04:28,576 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-01-10 01:04:28,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 01:04:28,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:28,580 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:28,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:04:28,581 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:28,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:28,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1181784603, now seen corresponding path program 1 times [2022-01-10 01:04:28,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:28,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068090406] [2022-01-10 01:04:28,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:28,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:28,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:28,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-10 01:04:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:04:28,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:28,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068090406] [2022-01-10 01:04:28,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068090406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:28,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:28,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:04:28,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800064857] [2022-01-10 01:04:28,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:28,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:04:28,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:28,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:04:28,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:04:28,738 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 01:04:28,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:28,823 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2022-01-10 01:04:28,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:04:28,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-01-10 01:04:28,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:28,825 INFO L225 Difference]: With dead ends: 57 [2022-01-10 01:04:28,826 INFO L226 Difference]: Without dead ends: 55 [2022-01-10 01:04:28,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:04:28,827 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 19 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:28,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 177 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:04:28,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-10 01:04:28,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2022-01-10 01:04:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 33 states have internal predecessors, (37), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-10 01:04:28,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2022-01-10 01:04:28,836 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 23 [2022-01-10 01:04:28,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:28,837 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2022-01-10 01:04:28,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 01:04:28,837 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2022-01-10 01:04:28,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 01:04:28,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:28,839 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:28,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:04:28,839 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:28,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:28,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1727096996, now seen corresponding path program 1 times [2022-01-10 01:04:28,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:28,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998125436] [2022-01-10 01:04:28,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:28,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:28,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:28,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-10 01:04:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:28,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 01:04:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:29,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 01:04:29,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:29,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998125436] [2022-01-10 01:04:29,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998125436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:29,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:04:29,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:04:29,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056221239] [2022-01-10 01:04:29,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:29,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:04:29,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:29,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:04:29,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:04:29,066 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 01:04:29,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:29,188 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2022-01-10 01:04:29,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 01:04:29,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-01-10 01:04:29,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:29,190 INFO L225 Difference]: With dead ends: 67 [2022-01-10 01:04:29,190 INFO L226 Difference]: Without dead ends: 59 [2022-01-10 01:04:29,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-01-10 01:04:29,191 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:29,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 156 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:04:29,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-01-10 01:04:29,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2022-01-10 01:04:29,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 38 states have internal predecessors, (41), 14 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (15), 11 states have call predecessors, (15), 13 states have call successors, (15) [2022-01-10 01:04:29,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2022-01-10 01:04:29,202 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 26 [2022-01-10 01:04:29,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:29,202 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2022-01-10 01:04:29,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 01:04:29,203 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2022-01-10 01:04:29,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 01:04:29,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:29,203 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:29,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:04:29,204 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:29,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:29,204 INFO L85 PathProgramCache]: Analyzing trace with hash -941158096, now seen corresponding path program 1 times [2022-01-10 01:04:29,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:29,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346134472] [2022-01-10 01:04:29,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:29,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:29,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:29,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-10 01:04:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:29,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 01:04:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:29,463 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 01:04:29,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:29,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346134472] [2022-01-10 01:04:29,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346134472] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:29,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078858145] [2022-01-10 01:04:29,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:29,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:29,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:29,466 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) [2022-01-10 01:04:29,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 01:04:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:29,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-10 01:04:29,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:04:29,690 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 01:04:29,816 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-01-10 01:04:29,816 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-01-10 01:04:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 01:04:29,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:04:30,237 INFO L353 Elim1Store]: treesize reduction 7, result has 41.7 percent of original size [2022-01-10 01:04:30,237 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 96 [2022-01-10 01:04:30,381 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 01:04:30,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078858145] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:04:30,383 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:04:30,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 13] total 29 [2022-01-10 01:04:30,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880455648] [2022-01-10 01:04:30,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:04:30,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-10 01:04:30,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:30,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-10 01:04:30,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2022-01-10 01:04:30,388 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand has 29 states, 25 states have (on average 1.6) internal successors, (40), 23 states have internal predecessors, (40), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 4 states have call successors, (7) [2022-01-10 01:04:30,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:30,806 INFO L93 Difference]: Finished difference Result 67 states and 82 transitions. [2022-01-10 01:04:30,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:04:30,806 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 1.6) internal successors, (40), 23 states have internal predecessors, (40), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 4 states have call successors, (7) Word has length 27 [2022-01-10 01:04:30,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:30,809 INFO L225 Difference]: With dead ends: 67 [2022-01-10 01:04:30,809 INFO L226 Difference]: Without dead ends: 59 [2022-01-10 01:04:30,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=1227, Unknown=0, NotChecked=0, Total=1406 [2022-01-10 01:04:30,812 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 38 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:30,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 385 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 327 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-01-10 01:04:30,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-01-10 01:04:30,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2022-01-10 01:04:30,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 32 states have (on average 1.1875) internal successors, (38), 35 states have internal predecessors, (38), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (13), 11 states have call predecessors, (13), 12 states have call successors, (13) [2022-01-10 01:04:30,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2022-01-10 01:04:30,832 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 27 [2022-01-10 01:04:30,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:30,832 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2022-01-10 01:04:30,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 1.6) internal successors, (40), 23 states have internal predecessors, (40), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 4 states have call successors, (7) [2022-01-10 01:04:30,832 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2022-01-10 01:04:30,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 01:04:30,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:30,833 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:30,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 01:04:31,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:31,050 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:31,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:31,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1463759490, now seen corresponding path program 1 times [2022-01-10 01:04:31,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:31,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613198658] [2022-01-10 01:04:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:31,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-10 01:04:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-10 01:04:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-10 01:04:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:04:31,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:31,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613198658] [2022-01-10 01:04:31,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613198658] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:31,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464549710] [2022-01-10 01:04:31,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:31,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:31,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:31,151 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) [2022-01-10 01:04:31,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 01:04:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 01:04:31,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:04:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:04:31,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 01:04:31,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464549710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:04:31,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 01:04:31,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2022-01-10 01:04:31,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408746554] [2022-01-10 01:04:31,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:04:31,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:04:31,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:31,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:04:31,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-01-10 01:04:31,362 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-10 01:04:31,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:31,468 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2022-01-10 01:04:31,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 01:04:31,468 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2022-01-10 01:04:31,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:31,471 INFO L225 Difference]: With dead ends: 63 [2022-01-10 01:04:31,471 INFO L226 Difference]: Without dead ends: 61 [2022-01-10 01:04:31,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:04:31,472 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 33 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:31,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 166 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:04:31,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-10 01:04:31,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2022-01-10 01:04:31,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 38 states have internal predecessors, (41), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (13), 11 states have call predecessors, (13), 12 states have call successors, (13) [2022-01-10 01:04:31,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2022-01-10 01:04:31,485 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 38 [2022-01-10 01:04:31,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:31,485 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2022-01-10 01:04:31,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-10 01:04:31,485 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2022-01-10 01:04:31,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 01:04:31,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:31,491 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:31,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 01:04:31,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:31,707 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:31,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:31,708 INFO L85 PathProgramCache]: Analyzing trace with hash -716850388, now seen corresponding path program 1 times [2022-01-10 01:04:31,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:31,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597616254] [2022-01-10 01:04:31,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:31,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-10 01:04:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-10 01:04:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-10 01:04:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-10 01:04:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:04:31,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:31,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597616254] [2022-01-10 01:04:31,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597616254] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:31,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631541510] [2022-01-10 01:04:31,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:31,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:31,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:31,901 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) [2022-01-10 01:04:31,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 01:04:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:31,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 01:04:31,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:04:32,161 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:04:32,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:04:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:04:32,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631541510] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:04:32,334 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:04:32,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-01-10 01:04:32,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862797485] [2022-01-10 01:04:32,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:04:32,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 01:04:32,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:32,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 01:04:32,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-01-10 01:04:32,337 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 21 states have internal predecessors, (41), 11 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) [2022-01-10 01:04:32,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:32,685 INFO L93 Difference]: Finished difference Result 136 states and 181 transitions. [2022-01-10 01:04:32,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 01:04:32,686 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 21 states have internal predecessors, (41), 11 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) Word has length 41 [2022-01-10 01:04:32,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:32,689 INFO L225 Difference]: With dead ends: 136 [2022-01-10 01:04:32,689 INFO L226 Difference]: Without dead ends: 116 [2022-01-10 01:04:32,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=215, Invalid=975, Unknown=0, NotChecked=0, Total=1190 [2022-01-10 01:04:32,691 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 71 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:32,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 522 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:04:32,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-01-10 01:04:32,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 99. [2022-01-10 01:04:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 66 states have internal predecessors, (71), 28 states have call successors, (28), 9 states have call predecessors, (28), 11 states have return successors, (30), 23 states have call predecessors, (30), 27 states have call successors, (30) [2022-01-10 01:04:32,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 129 transitions. [2022-01-10 01:04:32,717 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 129 transitions. Word has length 41 [2022-01-10 01:04:32,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:32,718 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 129 transitions. [2022-01-10 01:04:32,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 21 states have internal predecessors, (41), 11 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) [2022-01-10 01:04:32,718 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 129 transitions. [2022-01-10 01:04:32,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 01:04:32,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:32,720 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:32,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 01:04:32,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:32,937 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:32,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:32,938 INFO L85 PathProgramCache]: Analyzing trace with hash -635969832, now seen corresponding path program 1 times [2022-01-10 01:04:32,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:32,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587077559] [2022-01-10 01:04:32,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:32,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:33,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:33,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-10 01:04:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:33,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 01:04:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:33,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-10 01:04:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:33,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-10 01:04:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:33,024 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:04:33,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:33,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587077559] [2022-01-10 01:04:33,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587077559] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:33,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71678802] [2022-01-10 01:04:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:33,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:33,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:33,025 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) [2022-01-10 01:04:33,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 01:04:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:33,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 01:04:33,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:04:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 01:04:33,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:04:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:04:33,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71678802] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 01:04:33,455 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 01:04:33,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-01-10 01:04:33,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650726744] [2022-01-10 01:04:33,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 01:04:33,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 01:04:33,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:33,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 01:04:33,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-01-10 01:04:33,457 INFO L87 Difference]: Start difference. First operand 99 states and 129 transitions. Second operand has 18 states, 18 states have (on average 2.5) internal successors, (45), 15 states have internal predecessors, (45), 5 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 01:04:33,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:33,545 INFO L93 Difference]: Finished difference Result 155 states and 195 transitions. [2022-01-10 01:04:33,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:04:33,545 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 15 states have internal predecessors, (45), 5 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 42 [2022-01-10 01:04:33,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:33,546 INFO L225 Difference]: With dead ends: 155 [2022-01-10 01:04:33,546 INFO L226 Difference]: Without dead ends: 60 [2022-01-10 01:04:33,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-01-10 01:04:33,549 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 23 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:33,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 361 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 76 Invalid, 0 Unknown, 9 Unchecked, 0.0s Time] [2022-01-10 01:04:33,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-01-10 01:04:33,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2022-01-10 01:04:33,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.162162162162162) internal successors, (43), 40 states have internal predecessors, (43), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (13), 11 states have call predecessors, (13), 12 states have call successors, (13) [2022-01-10 01:04:33,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2022-01-10 01:04:33,557 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 42 [2022-01-10 01:04:33,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:33,557 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2022-01-10 01:04:33,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 15 states have internal predecessors, (45), 5 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 01:04:33,557 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2022-01-10 01:04:33,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 01:04:33,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:33,558 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:33,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 01:04:33,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:33,762 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:33,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:33,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1871327404, now seen corresponding path program 2 times [2022-01-10 01:04:33,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:33,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412016781] [2022-01-10 01:04:33,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:33,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:34,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:34,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-10 01:04:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:34,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 01:04:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:34,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-10 01:04:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:34,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 01:04:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:34,363 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 01:04:34,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:34,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412016781] [2022-01-10 01:04:34,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412016781] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:34,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726036429] [2022-01-10 01:04:34,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 01:04:34,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:34,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:34,376 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 01:04:34,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 01:04:34,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 01:04:34,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 01:04:34,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 67 conjunts are in the unsatisfiable core [2022-01-10 01:04:34,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:04:34,492 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 01:04:34,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 01:04:34,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-01-10 01:04:35,020 INFO L353 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2022-01-10 01:04:35,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 16 [2022-01-10 01:04:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:04:35,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:04:37,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726036429] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:37,544 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 01:04:37,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37 [2022-01-10 01:04:37,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121649887] [2022-01-10 01:04:37,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 01:04:37,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-10 01:04:37,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:37,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-10 01:04:37,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1756, Unknown=1, NotChecked=0, Total=1892 [2022-01-10 01:04:37,546 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 37 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 9 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (9), 8 states have call predecessors, (9), 5 states have call successors, (9) [2022-01-10 01:04:38,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:38,396 INFO L93 Difference]: Finished difference Result 110 states and 134 transitions. [2022-01-10 01:04:38,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-10 01:04:38,396 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 9 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (9), 8 states have call predecessors, (9), 5 states have call successors, (9) Word has length 43 [2022-01-10 01:04:38,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:38,397 INFO L225 Difference]: With dead ends: 110 [2022-01-10 01:04:38,398 INFO L226 Difference]: Without dead ends: 106 [2022-01-10 01:04:38,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=256, Invalid=2935, Unknown=1, NotChecked=0, Total=3192 [2022-01-10 01:04:38,399 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 50 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:38,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 760 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 651 Invalid, 0 Unknown, 107 Unchecked, 0.3s Time] [2022-01-10 01:04:38,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-01-10 01:04:38,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2022-01-10 01:04:38,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 60 states have (on average 1.15) internal successors, (69), 66 states have internal predecessors, (69), 20 states have call successors, (20), 11 states have call predecessors, (20), 13 states have return successors, (25), 16 states have call predecessors, (25), 19 states have call successors, (25) [2022-01-10 01:04:38,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 114 transitions. [2022-01-10 01:04:38,406 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 114 transitions. Word has length 43 [2022-01-10 01:04:38,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:38,407 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 114 transitions. [2022-01-10 01:04:38,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 9 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (9), 8 states have call predecessors, (9), 5 states have call successors, (9) [2022-01-10 01:04:38,407 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 114 transitions. [2022-01-10 01:04:38,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 01:04:38,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:38,408 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:38,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 01:04:38,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:38,625 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:38,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:38,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2006836904, now seen corresponding path program 3 times [2022-01-10 01:04:38,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:38,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770677041] [2022-01-10 01:04:38,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:38,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:38,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:38,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-10 01:04:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:38,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:04:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:38,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-10 01:04:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:38,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-10 01:04:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:04:38,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:38,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770677041] [2022-01-10 01:04:38,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770677041] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:38,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486981553] [2022-01-10 01:04:38,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 01:04:38,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:38,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:38,821 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 01:04:38,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 01:04:38,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-10 01:04:38,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 01:04:38,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-10 01:04:38,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:04:39,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 01:04:39,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 01:04:39,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 01:04:39,777 INFO L353 Elim1Store]: treesize reduction 12, result has 68.4 percent of original size [2022-01-10 01:04:39,777 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 35 [2022-01-10 01:04:39,913 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:04:39,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:04:40,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486981553] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:40,604 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 01:04:40,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19] total 30 [2022-01-10 01:04:40,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516590038] [2022-01-10 01:04:40,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 01:04:40,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-10 01:04:40,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:04:40,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-10 01:04:40,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=912, Unknown=0, NotChecked=0, Total=992 [2022-01-10 01:04:40,605 INFO L87 Difference]: Start difference. First operand 94 states and 114 transitions. Second operand has 30 states, 25 states have (on average 1.72) internal successors, (43), 24 states have internal predecessors, (43), 9 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-01-10 01:04:42,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:04:42,169 INFO L93 Difference]: Finished difference Result 166 states and 204 transitions. [2022-01-10 01:04:42,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-10 01:04:42,170 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 25 states have (on average 1.72) internal successors, (43), 24 states have internal predecessors, (43), 9 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 44 [2022-01-10 01:04:42,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:04:42,174 INFO L225 Difference]: With dead ends: 166 [2022-01-10 01:04:42,174 INFO L226 Difference]: Without dead ends: 149 [2022-01-10 01:04:42,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=286, Invalid=2906, Unknown=0, NotChecked=0, Total=3192 [2022-01-10 01:04:42,177 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 64 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 01:04:42,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 932 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 796 Invalid, 0 Unknown, 67 Unchecked, 0.4s Time] [2022-01-10 01:04:42,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-01-10 01:04:42,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 133. [2022-01-10 01:04:42,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 83 states have (on average 1.1566265060240963) internal successors, (96), 92 states have internal predecessors, (96), 32 states have call successors, (32), 15 states have call predecessors, (32), 17 states have return successors, (40), 25 states have call predecessors, (40), 31 states have call successors, (40) [2022-01-10 01:04:42,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 168 transitions. [2022-01-10 01:04:42,220 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 168 transitions. Word has length 44 [2022-01-10 01:04:42,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:04:42,220 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 168 transitions. [2022-01-10 01:04:42,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 25 states have (on average 1.72) internal successors, (43), 24 states have internal predecessors, (43), 9 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-01-10 01:04:42,221 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 168 transitions. [2022-01-10 01:04:42,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 01:04:42,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:04:42,221 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:04:42,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 01:04:42,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:42,439 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:04:42,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:04:42,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1269781586, now seen corresponding path program 1 times [2022-01-10 01:04:42,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:04:42,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573936127] [2022-01-10 01:04:42,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:42,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:04:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:42,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 01:04:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:42,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-10 01:04:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:42,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-10 01:04:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:42,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-10 01:04:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:42,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-10 01:04:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:42,708 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:04:42,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:04:42,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573936127] [2022-01-10 01:04:42,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573936127] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:04:42,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997570879] [2022-01-10 01:04:42,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:04:42,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:04:42,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:04:42,720 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 01:04:42,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-10 01:04:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:04:42,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-10 01:04:42,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:04:42,845 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 01:04:42,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 01:04:42,881 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-01-10 01:04:42,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 01:04:42,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 01:04:42,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 01:04:42,931 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-01-10 01:04:42,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 01:04:42,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 01:04:42,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 01:04:42,976 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 01:04:42,976 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-01-10 01:04:43,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 01:04:43,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 01:04:43,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 01:04:43,317 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 01:04:43,317 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 26 [2022-01-10 01:04:43,406 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:04:43,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 01:05:00,820 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-01-10 01:05:00,821 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 415156 treesize of output 402868 [2022-01-10 01:05:23,398 WARN L228 SmtUtils]: Spent 22.57s on a formula simplification. DAG size of input: 431 DAG size of output: 428 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-10 01:05:23,410 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2022-01-10 01:05:23,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-10 01:05:23,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:05:23,628 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger out of long range at java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.computeDerApplicabilityScore(QuantifierPusher.java:685) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.selectBestEliminatee(QuantifierPusher.java:668) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:604) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:446) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:247) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-10 01:05:23,632 INFO L158 Benchmark]: Toolchain (without parser) took 55980.01ms. Allocated memory was 255.9MB in the beginning and 719.3MB in the end (delta: 463.5MB). Free memory was 200.3MB in the beginning and 598.3MB in the end (delta: -398.0MB). Peak memory consumption was 416.2MB. Max. memory is 8.0GB. [2022-01-10 01:05:23,632 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 255.9MB. Free memory is still 217.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 01:05:23,633 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.93ms. Allocated memory is still 255.9MB. Free memory was 200.0MB in the beginning and 225.2MB in the end (delta: -25.2MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. [2022-01-10 01:05:23,633 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.87ms. Allocated memory is still 255.9MB. Free memory was 225.2MB in the beginning and 223.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 01:05:23,633 INFO L158 Benchmark]: Boogie Preprocessor took 33.46ms. Allocated memory is still 255.9MB. Free memory was 223.6MB in the beginning and 222.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 01:05:23,633 INFO L158 Benchmark]: RCFGBuilder took 218.06ms. Allocated memory is still 255.9MB. Free memory was 222.1MB in the beginning and 210.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-10 01:05:23,633 INFO L158 Benchmark]: TraceAbstraction took 55352.60ms. Allocated memory was 255.9MB in the beginning and 719.3MB in the end (delta: 463.5MB). Free memory was 209.5MB in the beginning and 598.3MB in the end (delta: -388.8MB). Peak memory consumption was 426.5MB. Max. memory is 8.0GB. [2022-01-10 01:05:23,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 255.9MB. Free memory is still 217.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 332.93ms. Allocated memory is still 255.9MB. Free memory was 200.0MB in the beginning and 225.2MB in the end (delta: -25.2MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.87ms. Allocated memory is still 255.9MB. Free memory was 225.2MB in the beginning and 223.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.46ms. Allocated memory is still 255.9MB. Free memory was 223.6MB in the beginning and 222.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 218.06ms. Allocated memory is still 255.9MB. Free memory was 222.1MB in the beginning and 210.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 55352.60ms. Allocated memory was 255.9MB in the beginning and 719.3MB in the end (delta: 463.5MB). Free memory was 209.5MB in the beginning and 598.3MB in the end (delta: -388.8MB). Peak memory consumption was 426.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of long range de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger out of long range: java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-10 01:05:23,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...