/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/array-patterns/array24_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 23:15:49,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 23:15:49,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 23:15:49,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-09 23:15:49,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 23:15:49,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 23:15:49,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 23:15:49,830 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 [2022-01-09 23:15:49,843 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 23:15:49,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 23:15:49,843 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 23:15:49,843 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 23:15:49,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 23:15:49,844 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 23:15:49,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 23:15:49,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 23:15:49,844 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 23:15:49,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 23:15:49,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 23:15:49,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 23:15:49,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 23:15:49,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 23:15:49,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 23:15:49,845 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 23:15:49,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 23:15:49,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 23:15:49,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 23:15:49,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 23:15:49,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 23:15:49,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:15:49,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 23:15:49,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 23:15:49,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 23:15:49,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 23:15:49,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 23:15:49,846 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 23:15:49,846 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 23:15:49,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 23:15:49,846 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 23:15:49,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 23:15:50,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 23:15:50,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 23:15:50,022 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 23:15:50,036 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 23:15:50,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array24_pattern.c [2022-01-09 23:15:50,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/096bfdbe6/c6d17f15375a4650986e66ffe4016f46/FLAGc57085380 [2022-01-09 23:15:50,390 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 23:15:50,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array24_pattern.c [2022-01-09 23:15:50,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/096bfdbe6/c6d17f15375a4650986e66ffe4016f46/FLAGc57085380 [2022-01-09 23:15:50,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/096bfdbe6/c6d17f15375a4650986e66ffe4016f46 [2022-01-09 23:15:50,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 23:15:50,829 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 23:15:50,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 23:15:50,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 23:15:50,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 23:15:50,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:15:50" (1/1) ... [2022-01-09 23:15:50,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c93414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:50, skipping insertion in model container [2022-01-09 23:15:50,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:15:50" (1/1) ... [2022-01-09 23:15:50,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 23:15:50,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 23:15:50,957 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array24_pattern.c[1359,1372] [2022-01-09 23:15:50,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:15:50,988 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 23:15:50,995 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array24_pattern.c[1359,1372] [2022-01-09 23:15:51,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:15:51,010 INFO L208 MainTranslator]: Completed translation [2022-01-09 23:15:51,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51 WrapperNode [2022-01-09 23:15:51,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 23:15:51,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 23:15:51,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 23:15:51,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 23:15:51,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ... [2022-01-09 23:15:51,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ... [2022-01-09 23:15:51,041 INFO L137 Inliner]: procedures = 17, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105 [2022-01-09 23:15:51,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 23:15:51,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 23:15:51,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 23:15:51,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 23:15:51,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ... [2022-01-09 23:15:51,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ... [2022-01-09 23:15:51,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ... [2022-01-09 23:15:51,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ... [2022-01-09 23:15:51,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ... [2022-01-09 23:15:51,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ... [2022-01-09 23:15:51,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ... [2022-01-09 23:15:51,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 23:15:51,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 23:15:51,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 23:15:51,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 23:15:51,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ... [2022-01-09 23:15:51,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:15:51,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:15:51,080 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) [2022-01-09 23:15:51,085 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 [2022-01-09 23:15:51,112 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2022-01-09 23:15:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2022-01-09 23:15:51,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 23:15:51,112 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-09 23:15:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-09 23:15:51,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 23:15:51,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-09 23:15:51,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-09 23:15:51,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 23:15:51,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 23:15:51,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-09 23:15:51,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-09 23:15:51,159 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 23:15:51,162 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 23:15:51,275 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 23:15:51,279 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 23:15:51,279 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-09 23:15:51,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:15:51 BoogieIcfgContainer [2022-01-09 23:15:51,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 23:15:51,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 23:15:51,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 23:15:51,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 23:15:51,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:15:50" (1/3) ... [2022-01-09 23:15:51,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2679b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:15:51, skipping insertion in model container [2022-01-09 23:15:51,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (2/3) ... [2022-01-09 23:15:51,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2679b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:15:51, skipping insertion in model container [2022-01-09 23:15:51,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:15:51" (3/3) ... [2022-01-09 23:15:51,285 INFO L111 eAbstractionObserver]: Analyzing ICFG array24_pattern.c [2022-01-09 23:15:51,288 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 23:15:51,288 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 23:15:51,316 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 23:15:51,321 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 [2022-01-09 23:15:51,321 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 23:15:51,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-09 23:15:51,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-09 23:15:51,334 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:15:51,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:15:51,335 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:15:51,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:15:51,338 INFO L85 PathProgramCache]: Analyzing trace with hash 2136211159, now seen corresponding path program 1 times [2022-01-09 23:15:51,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:15:51,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268684088] [2022-01-09 23:15:51,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:51,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:15:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:15:51,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 23:15:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:15:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:15:51,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:15:51,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268684088] [2022-01-09 23:15:51,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268684088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:15:51,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:15:51,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:15:51,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689524272] [2022-01-09 23:15:51,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:15:51,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-09 23:15:51,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:15:51,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-09 23:15:51,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 23:15:51,465 INFO L87 Difference]: Start difference. First operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-09 23:15:51,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:15:51,478 INFO L93 Difference]: Finished difference Result 77 states and 115 transitions. [2022-01-09 23:15:51,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-09 23:15:51,480 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-01-09 23:15:51,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:15:51,484 INFO L225 Difference]: With dead ends: 77 [2022-01-09 23:15:51,484 INFO L226 Difference]: Without dead ends: 36 [2022-01-09 23:15:51,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 23:15:51,488 INFO L933 BasicCegarLoop]: 50 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, 50 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 [2022-01-09 23:15:51,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:15:51,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-09 23:15:51,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-01-09 23:15:51,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-09 23:15:51,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2022-01-09 23:15:51,513 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 15 [2022-01-09 23:15:51,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:15:51,513 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2022-01-09 23:15:51,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-09 23:15:51,513 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2022-01-09 23:15:51,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-09 23:15:51,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:15:51,515 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:15:51,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 23:15:51,515 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:15:51,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:15:51,516 INFO L85 PathProgramCache]: Analyzing trace with hash -699940082, now seen corresponding path program 1 times [2022-01-09 23:15:51,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:15:51,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789069746] [2022-01-09 23:15:51,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:51,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:15:51,542 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:15:51,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7544508] [2022-01-09 23:15:51,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:51,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:51,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:15:51,544 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) [2022-01-09 23:15:51,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 23:15:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:15:51,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-09 23:15:51,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:15:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:15:51,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:15:51,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:15:51,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789069746] [2022-01-09 23:15:51,760 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:15:51,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7544508] [2022-01-09 23:15:51,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7544508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:15:51,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:15:51,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-09 23:15:51,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542092016] [2022-01-09 23:15:51,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:15:51,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-09 23:15:51,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:15:51,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-09 23:15:51,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-09 23:15:51,763 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-09 23:15:51,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:15:51,883 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2022-01-09 23:15:51,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-09 23:15:51,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-01-09 23:15:51,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:15:51,887 INFO L225 Difference]: With dead ends: 76 [2022-01-09 23:15:51,887 INFO L226 Difference]: Without dead ends: 48 [2022-01-09 23:15:51,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-09 23:15:51,889 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 49 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:15:51,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 92 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:15:51,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-01-09 23:15:51,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2022-01-09 23:15:51,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-09 23:15:51,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2022-01-09 23:15:51,901 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 35 [2022-01-09 23:15:51,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:15:51,901 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2022-01-09 23:15:51,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-09 23:15:51,901 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2022-01-09 23:15:51,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-09 23:15:51,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:15:51,904 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:15:51,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-09 23:15:52,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:52,122 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:15:52,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:15:52,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1308831759, now seen corresponding path program 1 times [2022-01-09 23:15:52,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:15:52,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19213829] [2022-01-09 23:15:52,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:52,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:15:52,138 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:15:52,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907357422] [2022-01-09 23:15:52,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:52,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:52,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:15:52,150 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) [2022-01-09 23:15:52,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-09 23:15:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:15:52,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-09 23:15:52,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:15:52,266 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-09 23:15:52,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:15:52,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:15:52,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19213829] [2022-01-09 23:15:52,267 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:15:52,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907357422] [2022-01-09 23:15:52,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907357422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:15:52,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:15:52,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-09 23:15:52,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106517567] [2022-01-09 23:15:52,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:15:52,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:15:52,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:15:52,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:15:52,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:15:52,268 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-09 23:15:52,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:15:52,302 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2022-01-09 23:15:52,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 23:15:52,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2022-01-09 23:15:52,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:15:52,303 INFO L225 Difference]: With dead ends: 79 [2022-01-09 23:15:52,303 INFO L226 Difference]: Without dead ends: 46 [2022-01-09 23:15:52,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:15:52,304 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 27 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:15:52,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 76 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:15:52,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-09 23:15:52,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2022-01-09 23:15:52,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-09 23:15:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2022-01-09 23:15:52,309 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 41 [2022-01-09 23:15:52,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:15:52,310 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2022-01-09 23:15:52,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-09 23:15:52,310 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2022-01-09 23:15:52,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-09 23:15:52,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:15:52,311 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:15:52,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-09 23:15:52,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-09 23:15:52,512 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:15:52,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:15:52,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1300942485, now seen corresponding path program 1 times [2022-01-09 23:15:52,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:15:52,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559981868] [2022-01-09 23:15:52,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:52,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:15:52,531 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:15:52,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1517985138] [2022-01-09 23:15:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:52,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:52,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:15:52,535 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) [2022-01-09 23:15:52,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-09 23:15:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:15:52,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-09 23:15:52,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:15:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-09 23:15:52,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:15:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-09 23:15:52,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:15:52,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559981868] [2022-01-09 23:15:52,822 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:15:52,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517985138] [2022-01-09 23:15:52,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517985138] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:15:52,822 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:15:52,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-01-09 23:15:52,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371122657] [2022-01-09 23:15:52,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:15:52,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-09 23:15:52,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:15:52,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-09 23:15:52,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-01-09 23:15:52,824 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-09 23:15:52,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:15:52,995 INFO L93 Difference]: Finished difference Result 85 states and 105 transitions. [2022-01-09 23:15:52,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-09 23:15:52,996 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 45 [2022-01-09 23:15:52,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:15:52,996 INFO L225 Difference]: With dead ends: 85 [2022-01-09 23:15:52,996 INFO L226 Difference]: Without dead ends: 50 [2022-01-09 23:15:52,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-01-09 23:15:52,998 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 104 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:15:53,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 151 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:15:53,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-09 23:15:53,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2022-01-09 23:15:53,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-09 23:15:53,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2022-01-09 23:15:53,016 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 45 [2022-01-09 23:15:53,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:15:53,017 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2022-01-09 23:15:53,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-09 23:15:53,017 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2022-01-09 23:15:53,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-09 23:15:53,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:15:53,018 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:15:53,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-09 23:15:53,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:53,228 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:15:53,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:15:53,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1544610617, now seen corresponding path program 2 times [2022-01-09 23:15:53,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:15:53,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495586936] [2022-01-09 23:15:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:53,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:15:53,243 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:15:53,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302359413] [2022-01-09 23:15:53,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 23:15:53,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:53,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:15:53,244 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) [2022-01-09 23:15:53,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-09 23:15:53,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-09 23:15:53,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:15:53,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-09 23:15:53,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:15:53,398 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-09 23:15:53,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:15:53,504 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-09 23:15:53,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:15:53,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495586936] [2022-01-09 23:15:53,505 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:15:53,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302359413] [2022-01-09 23:15:53,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302359413] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:15:53,505 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:15:53,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-09 23:15:53,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528695045] [2022-01-09 23:15:53,505 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:15:53,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-09 23:15:53,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:15:53,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-09 23:15:53,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-09 23:15:53,506 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-09 23:15:53,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:15:53,630 INFO L93 Difference]: Finished difference Result 106 states and 128 transitions. [2022-01-09 23:15:53,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-09 23:15:53,631 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 49 [2022-01-09 23:15:53,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:15:53,632 INFO L225 Difference]: With dead ends: 106 [2022-01-09 23:15:53,632 INFO L226 Difference]: Without dead ends: 74 [2022-01-09 23:15:53,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-01-09 23:15:53,633 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 50 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:15:53,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 198 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:15:53,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-09 23:15:53,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2022-01-09 23:15:53,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-09 23:15:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2022-01-09 23:15:53,638 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 49 [2022-01-09 23:15:53,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:15:53,639 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2022-01-09 23:15:53,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-09 23:15:53,639 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2022-01-09 23:15:53,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-09 23:15:53,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:15:53,640 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1] [2022-01-09 23:15:53,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-09 23:15:53,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:53,840 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:15:53,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:15:53,841 INFO L85 PathProgramCache]: Analyzing trace with hash -725408594, now seen corresponding path program 3 times [2022-01-09 23:15:53,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:15:53,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464769701] [2022-01-09 23:15:53,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:53,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:15:53,850 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:15:53,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232846152] [2022-01-09 23:15:53,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-09 23:15:53,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:53,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:15:53,858 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) [2022-01-09 23:15:53,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-09 23:15:54,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-01-09 23:15:54,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:15:54,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 86 conjunts are in the unsatisfiable core [2022-01-09 23:15:54,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:15:54,549 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 20 treesize of output 16 [2022-01-09 23:15:54,618 INFO L353 Elim1Store]: treesize reduction 49, result has 21.0 percent of original size [2022-01-09 23:15:54,618 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2022-01-09 23:15:54,738 INFO L353 Elim1Store]: treesize reduction 84, result has 16.8 percent of original size [2022-01-09 23:15:54,738 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2022-01-09 23:15:54,839 INFO L353 Elim1Store]: treesize reduction 186, result has 15.5 percent of original size [2022-01-09 23:15:54,840 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 59 [2022-01-09 23:16:17,463 INFO L353 Elim1Store]: treesize reduction 399, result has 11.1 percent of original size [2022-01-09 23:16:17,463 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 83 treesize of output 78 [2022-01-09 23:16:36,428 INFO L353 Elim1Store]: treesize reduction 198, result has 1.5 percent of original size [2022-01-09 23:16:36,428 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 23 [2022-01-09 23:16:36,647 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:16:36,647 INFO L328 TraceCheckSpWp]: Computing backward predicates...