/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/array12_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 23:14:29,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 23:14:29,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 23:14:29,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-09 23:14:29,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 23:14:29,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 23:14:29,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 23:14:29,875 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 23:14:29,891 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 23:14:29,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 23:14:29,892 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 23:14:29,892 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 23:14:29,892 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 23:14:29,892 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 23:14:29,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 23:14:29,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 23:14:29,893 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 23:14:29,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 23:14:29,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 23:14:29,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 23:14:29,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 23:14:29,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 23:14:29,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 23:14:29,894 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 23:14:29,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 23:14:29,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 23:14:29,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 23:14:29,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 23:14:29,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 23:14:29,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:14:29,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 23:14:29,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 23:14:29,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 23:14:29,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 23:14:29,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 23:14:29,895 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 23:14:29,895 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 23:14:29,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 23:14:29,895 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 23:14:30,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 23:14:30,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 23:14:30,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 23:14:30,115 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 23:14:30,116 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 23:14:30,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array12_pattern.c [2022-01-09 23:14:30,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52dc533e5/1f71b496e0d946318591fc128352188c/FLAG067b09812 [2022-01-09 23:14:30,537 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 23:14:30,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array12_pattern.c [2022-01-09 23:14:30,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52dc533e5/1f71b496e0d946318591fc128352188c/FLAG067b09812 [2022-01-09 23:14:30,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52dc533e5/1f71b496e0d946318591fc128352188c [2022-01-09 23:14:30,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 23:14:30,557 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 23:14:30,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 23:14:30,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 23:14:30,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 23:14:30,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:14:30" (1/1) ... [2022-01-09 23:14:30,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc76da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:30, skipping insertion in model container [2022-01-09 23:14:30,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:14:30" (1/1) ... [2022-01-09 23:14:30,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 23:14:30,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 23:14:30,690 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/array12_pattern.c[1349,1362] [2022-01-09 23:14:30,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:14:30,722 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 23:14:30,730 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/array12_pattern.c[1349,1362] [2022-01-09 23:14:30,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:14:30,743 INFO L208 MainTranslator]: Completed translation [2022-01-09 23:14:30,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:30 WrapperNode [2022-01-09 23:14:30,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 23:14:30,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 23:14:30,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 23:14:30,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 23:14:30,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:30" (1/1) ... [2022-01-09 23:14:30,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:30" (1/1) ... [2022-01-09 23:14:30,765 INFO L137 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2022-01-09 23:14:30,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 23:14:30,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 23:14:30,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 23:14:30,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 23:14:30,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:30" (1/1) ... [2022-01-09 23:14:30,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:30" (1/1) ... [2022-01-09 23:14:30,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:30" (1/1) ... [2022-01-09 23:14:30,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:30" (1/1) ... [2022-01-09 23:14:30,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:30" (1/1) ... [2022-01-09 23:14:30,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:30" (1/1) ... [2022-01-09 23:14:30,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:30" (1/1) ... [2022-01-09 23:14:30,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 23:14:30,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 23:14:30,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 23:14:30,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 23:14:30,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:30" (1/1) ... [2022-01-09 23:14:30,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:14:30,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:30,829 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 23:14:30,856 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 23:14:30,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 23:14:30,874 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-09 23:14:30,874 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-09 23:14:30,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 23:14:30,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-09 23:14:30,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-09 23:14:30,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 23:14:30,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 23:14:30,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-09 23:14:30,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-09 23:14:30,915 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 23:14:30,916 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 23:14:31,014 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 23:14:31,019 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 23:14:31,019 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-09 23:14:31,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:14:31 BoogieIcfgContainer [2022-01-09 23:14:31,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 23:14:31,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 23:14:31,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 23:14:31,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 23:14:31,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:14:30" (1/3) ... [2022-01-09 23:14:31,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed11b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:14:31, skipping insertion in model container [2022-01-09 23:14:31,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:30" (2/3) ... [2022-01-09 23:14:31,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed11b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:14:31, skipping insertion in model container [2022-01-09 23:14:31,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:14:31" (3/3) ... [2022-01-09 23:14:31,025 INFO L111 eAbstractionObserver]: Analyzing ICFG array12_pattern.c [2022-01-09 23:14:31,028 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 23:14:31,028 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 23:14:31,056 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 23:14:31,061 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 23:14:31,061 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 23:14:31,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:14:31,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-09 23:14:31,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:31,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:14:31,074 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:31,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:31,078 INFO L85 PathProgramCache]: Analyzing trace with hash -2136223091, now seen corresponding path program 1 times [2022-01-09 23:14:31,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:31,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021683546] [2022-01-09 23:14:31,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:31,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:14:31,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 23:14:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:14:31,229 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 23:14:31,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:31,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021683546] [2022-01-09 23:14:31,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021683546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:14:31,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:14:31,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:14:31,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729710145] [2022-01-09 23:14:31,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:14:31,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-09 23:14:31,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:31,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-09 23:14:31,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 23:14:31,253 INFO L87 Difference]: Start difference. First operand has 30 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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 23:14:31,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:31,265 INFO L93 Difference]: Finished difference Result 57 states and 87 transitions. [2022-01-09 23:14:31,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-09 23:14:31,267 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 23:14:31,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:31,271 INFO L225 Difference]: With dead ends: 57 [2022-01-09 23:14:31,271 INFO L226 Difference]: Without dead ends: 26 [2022-01-09 23:14:31,273 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 23:14:31,275 INFO L933 BasicCegarLoop]: 36 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, 36 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 23:14:31,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:14:31,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-09 23:14:31,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-01-09 23:14:31,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:14:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-01-09 23:14:31,298 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 15 [2022-01-09 23:14:31,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:31,299 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-01-09 23:14:31,299 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 23:14:31,299 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-01-09 23:14:31,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-09 23:14:31,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:31,300 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] [2022-01-09 23:14:31,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 23:14:31,301 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:31,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:31,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1040942554, now seen corresponding path program 1 times [2022-01-09 23:14:31,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:31,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502413929] [2022-01-09 23:14:31,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:31,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:31,315 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:31,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985402545] [2022-01-09 23:14:31,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:31,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:31,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:31,317 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 23:14:31,368 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 23:14:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:14:31,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-09 23:14:31,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:31,593 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 23:14:31,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:14:31,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:31,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502413929] [2022-01-09 23:14:31,594 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:31,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985402545] [2022-01-09 23:14:31,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985402545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:14:31,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:14:31,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-09 23:14:31,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683770071] [2022-01-09 23:14:31,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:14:31,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-09 23:14:31,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:31,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-09 23:14:31,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-09 23:14:31,597 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 23:14:31,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:31,707 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2022-01-09 23:14:31,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-09 23:14:31,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-01-09 23:14:31,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:31,708 INFO L225 Difference]: With dead ends: 56 [2022-01-09 23:14:31,708 INFO L226 Difference]: Without dead ends: 38 [2022-01-09 23:14:31,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 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 23:14:31,710 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 44 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:31,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 49 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:14:31,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-09 23:14:31,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2022-01-09 23:14:31,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:14:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-01-09 23:14:31,717 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 27 [2022-01-09 23:14:31,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:31,717 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-01-09 23:14:31,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 23:14:31,718 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-01-09 23:14:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-09 23:14:31,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:31,719 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] [2022-01-09 23:14:31,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-09 23:14:31,940 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 23:14:31,940 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:31,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:31,942 INFO L85 PathProgramCache]: Analyzing trace with hash -66078307, now seen corresponding path program 1 times [2022-01-09 23:14:31,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:31,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054411865] [2022-01-09 23:14:31,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:31,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:31,954 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:31,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389352834] [2022-01-09 23:14:31,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:31,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:31,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:31,963 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 23:14:31,965 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 23:14:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:14:32,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-09 23:14:32,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:32,099 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 23:14:32,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:14:32,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:32,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054411865] [2022-01-09 23:14:32,100 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:32,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389352834] [2022-01-09 23:14:32,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389352834] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:14:32,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:14:32,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-09 23:14:32,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373517357] [2022-01-09 23:14:32,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:14:32,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:14:32,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:32,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:14:32,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:14:32,102 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 23:14:32,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:32,148 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2022-01-09 23:14:32,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 23:14:32,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-01-09 23:14:32,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:32,151 INFO L225 Difference]: With dead ends: 59 [2022-01-09 23:14:32,151 INFO L226 Difference]: Without dead ends: 36 [2022-01-09 23:14:32,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 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 23:14:32,154 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:32,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 45 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:14:32,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-09 23:14:32,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2022-01-09 23:14:32,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:14:32,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-01-09 23:14:32,163 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 33 [2022-01-09 23:14:32,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:32,163 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-01-09 23:14:32,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 23:14:32,164 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-01-09 23:14:32,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-09 23:14:32,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:32,164 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] [2022-01-09 23:14:32,183 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 23:14:32,383 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 23:14:32,384 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:32,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:32,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1831364287, now seen corresponding path program 1 times [2022-01-09 23:14:32,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:32,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252627965] [2022-01-09 23:14:32,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:32,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:32,415 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:32,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [93588105] [2022-01-09 23:14:32,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:32,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:32,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:32,441 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 23:14:32,483 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 23:14:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:14:32,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-09 23:14:32,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:32,824 INFO L353 Elim1Store]: treesize reduction 77, result has 1.3 percent of original size [2022-01-09 23:14:32,824 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 1 case distinctions, treesize of input 32 treesize of output 16 [2022-01-09 23:14:33,021 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-01-09 23:14:33,022 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 28 treesize of output 14 [2022-01-09 23:14:33,085 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:14:33,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:14:33,189 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-01-09 23:14:33,192 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 108 [2022-01-09 23:14:33,218 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-01-09 23:14:33,221 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 108 [2022-01-09 23:14:37,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:37,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252627965] [2022-01-09 23:14:37,898 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:37,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93588105] [2022-01-09 23:14:37,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93588105] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:14:37,899 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:14:37,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-01-09 23:14:37,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934362362] [2022-01-09 23:14:37,899 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-09 23:14:37,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-09 23:14:37,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:37,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-09 23:14:37,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=415, Unknown=1, NotChecked=0, Total=506 [2022-01-09 23:14:37,900 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 14 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:14:38,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:38,400 INFO L93 Difference]: Finished difference Result 81 states and 97 transitions. [2022-01-09 23:14:38,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-09 23:14:38,401 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 14 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 37 [2022-01-09 23:14:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:38,403 INFO L225 Difference]: With dead ends: 81 [2022-01-09 23:14:38,403 INFO L226 Difference]: Without dead ends: 77 [2022-01-09 23:14:38,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=262, Invalid=1069, Unknown=1, NotChecked=0, Total=1332 [2022-01-09 23:14:38,404 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 121 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:38,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 151 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 228 Invalid, 0 Unknown, 128 Unchecked, 0.1s Time] [2022-01-09 23:14:38,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-01-09 23:14:38,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 56. [2022-01-09 23:14:38,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 47 states have internal predecessors, (57), 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 23:14:38,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2022-01-09 23:14:38,424 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 37 [2022-01-09 23:14:38,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:38,425 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2022-01-09 23:14:38,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 14 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:14:38,425 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2022-01-09 23:14:38,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-09 23:14:38,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:38,433 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] [2022-01-09 23:14:38,452 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 23:14:38,634 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 23:14:38,634 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:38,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1155769123, now seen corresponding path program 2 times [2022-01-09 23:14:38,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:38,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481831079] [2022-01-09 23:14:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:38,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:38,646 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:38,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425300309] [2022-01-09 23:14:38,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 23:14:38,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:38,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:38,648 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 23:14:38,649 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 23:14:38,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-09 23:14:38,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:14:38,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-09 23:14:38,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:14:38,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:14:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-09 23:14:38,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:38,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481831079] [2022-01-09 23:14:38,816 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:38,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425300309] [2022-01-09 23:14:38,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425300309] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:14:38,816 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:14:38,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-09 23:14:38,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092237954] [2022-01-09 23:14:38,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:14:38,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-09 23:14:38,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:38,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-09 23:14:38,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-09 23:14:38,817 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:14:38,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:38,929 INFO L93 Difference]: Finished difference Result 115 states and 138 transitions. [2022-01-09 23:14:38,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-09 23:14:38,930 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2022-01-09 23:14:38,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:38,930 INFO L225 Difference]: With dead ends: 115 [2022-01-09 23:14:38,930 INFO L226 Difference]: Without dead ends: 85 [2022-01-09 23:14:38,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-09 23:14:38,931 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 105 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:38,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 102 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:14:38,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-01-09 23:14:38,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 64. [2022-01-09 23:14:38,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 55 states have internal predecessors, (65), 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 23:14:38,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2022-01-09 23:14:38,939 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 39 [2022-01-09 23:14:38,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:38,939 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2022-01-09 23:14:38,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:14:38,939 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2022-01-09 23:14:38,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-09 23:14:38,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:38,940 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] [2022-01-09 23:14:38,974 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 23:14:39,176 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 23:14:39,177 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:39,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:39,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1584262531, now seen corresponding path program 3 times [2022-01-09 23:14:39,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:39,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128457201] [2022-01-09 23:14:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:39,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:39,185 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:39,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693791987] [2022-01-09 23:14:39,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-09 23:14:39,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:39,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:39,187 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 23:14:39,188 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 23:14:39,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-09 23:14:39,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:14:39,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-09 23:14:39,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:39,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:39,459 INFO L353 Elim1Store]: treesize reduction 42, result has 46.2 percent of original size [2022-01-09 23:14:39,460 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 53 [2022-01-09 23:14:40,276 INFO L353 Elim1Store]: treesize reduction 28, result has 61.6 percent of original size [2022-01-09 23:14:40,276 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2022-01-09 23:14:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-09 23:14:40,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:14:40,711 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2022-01-09 23:14:40,714 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 217 [2022-01-09 23:14:40,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:40,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128457201] [2022-01-09 23:14:40,944 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:40,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693791987] [2022-01-09 23:14:40,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693791987] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:14:40,945 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:14:40,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-01-09 23:14:40,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077691331] [2022-01-09 23:14:40,945 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-09 23:14:40,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-09 23:14:40,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:40,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-09 23:14:40,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2022-01-09 23:14:40,946 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 15 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:14:41,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:41,128 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2022-01-09 23:14:41,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-09 23:14:41,128 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 15 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2022-01-09 23:14:41,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:41,129 INFO L225 Difference]: With dead ends: 85 [2022-01-09 23:14:41,129 INFO L226 Difference]: Without dead ends: 81 [2022-01-09 23:14:41,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-01-09 23:14:41,130 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 20 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:41,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 132 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2022-01-09 23:14:41,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-01-09 23:14:41,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2022-01-09 23:14:41,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 64 states have (on average 1.171875) internal successors, (75), 64 states have internal predecessors, (75), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-09 23:14:41,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2022-01-09 23:14:41,138 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 39 [2022-01-09 23:14:41,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:41,138 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2022-01-09 23:14:41,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 15 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:14:41,139 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2022-01-09 23:14:41,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-09 23:14:41,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:41,139 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] [2022-01-09 23:14:41,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-09 23:14:41,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:41,349 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:41,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:41,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2076840219, now seen corresponding path program 4 times [2022-01-09 23:14:41,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:41,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477128660] [2022-01-09 23:14:41,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:41,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:41,387 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:41,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1304683198] [2022-01-09 23:14:41,388 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-09 23:14:41,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:41,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:41,391 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) [2022-01-09 23:14:41,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-09 23:14:41,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-09 23:14:41,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:14:41,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-09 23:14:41,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:41,531 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 23:14:41,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:14:41,615 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 23:14:41,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:41,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477128660] [2022-01-09 23:14:41,615 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:41,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304683198] [2022-01-09 23:14:41,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304683198] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:14:41,616 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:14:41,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-09 23:14:41,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418657417] [2022-01-09 23:14:41,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:14:41,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-09 23:14:41,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:41,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-09 23:14:41,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-09 23:14:41,617 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:14:41,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:41,773 INFO L93 Difference]: Finished difference Result 137 states and 161 transitions. [2022-01-09 23:14:41,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-09 23:14:41,774 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2022-01-09 23:14:41,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:41,774 INFO L225 Difference]: With dead ends: 137 [2022-01-09 23:14:41,774 INFO L226 Difference]: Without dead ends: 101 [2022-01-09 23:14:41,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-01-09 23:14:41,775 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:41,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 120 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:14:41,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-01-09 23:14:41,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 86. [2022-01-09 23:14:41,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 75 states have internal predecessors, (89), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-09 23:14:41,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2022-01-09 23:14:41,784 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 41 [2022-01-09 23:14:41,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:41,784 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2022-01-09 23:14:41,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:14:41,784 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2022-01-09 23:14:41,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-09 23:14:41,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:41,785 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-09 23:14:41,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-09 23:14:41,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:41,994 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:41,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:41,994 INFO L85 PathProgramCache]: Analyzing trace with hash -624697650, now seen corresponding path program 5 times [2022-01-09 23:14:41,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:41,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065766283] [2022-01-09 23:14:41,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:41,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:42,016 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:42,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [96543419] [2022-01-09 23:14:42,016 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-09 23:14:42,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:42,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:42,018 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) [2022-01-09 23:14:42,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-09 23:14:42,086 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-09 23:14:42,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:14:42,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-09 23:14:42,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:42,165 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-09 23:14:42,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:14:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-09 23:14:42,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:42,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065766283] [2022-01-09 23:14:42,225 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:42,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96543419] [2022-01-09 23:14:42,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96543419] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:14:42,226 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:14:42,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-09 23:14:42,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853728] [2022-01-09 23:14:42,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:14:42,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-09 23:14:42,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:42,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-09 23:14:42,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-09 23:14:42,228 INFO L87 Difference]: Start difference. First operand 86 states and 99 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:14:42,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:42,343 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2022-01-09 23:14:42,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-09 23:14:42,344 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2022-01-09 23:14:42,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:42,344 INFO L225 Difference]: With dead ends: 105 [2022-01-09 23:14:42,344 INFO L226 Difference]: Without dead ends: 71 [2022-01-09 23:14:42,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-09 23:14:42,346 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 61 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:42,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 87 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:14:42,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-01-09 23:14:42,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2022-01-09 23:14:42,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 56 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:14:42,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2022-01-09 23:14:42,361 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 42 [2022-01-09 23:14:42,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:42,361 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2022-01-09 23:14:42,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:14:42,361 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2022-01-09 23:14:42,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-09 23:14:42,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:42,362 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:14:42,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-09 23:14:42,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:42,578 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:42,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:42,579 INFO L85 PathProgramCache]: Analyzing trace with hash -578017978, now seen corresponding path program 6 times [2022-01-09 23:14:42,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:42,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28556133] [2022-01-09 23:14:42,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:42,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:42,586 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:42,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009154097] [2022-01-09 23:14:42,586 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-09 23:14:42,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:42,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:42,589 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:14:42,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-09 23:14:42,696 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-01-09 23:14:42,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:14:42,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-09 23:14:42,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:42,774 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-09 23:14:42,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:14:42,842 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-09 23:14:42,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:42,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28556133] [2022-01-09 23:14:42,843 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:42,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009154097] [2022-01-09 23:14:42,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009154097] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:14:42,843 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:14:42,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-09 23:14:42,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011004004] [2022-01-09 23:14:42,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:14:42,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-09 23:14:42,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:42,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-09 23:14:42,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-09 23:14:42,844 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:14:42,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:42,970 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2022-01-09 23:14:42,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-09 23:14:42,971 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2022-01-09 23:14:42,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:42,971 INFO L225 Difference]: With dead ends: 70 [2022-01-09 23:14:42,971 INFO L226 Difference]: Without dead ends: 59 [2022-01-09 23:14:42,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2022-01-09 23:14:42,972 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 46 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:42,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 51 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:14:42,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-01-09 23:14:42,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2022-01-09 23:14:42,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:14:42,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2022-01-09 23:14:42,976 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 51 [2022-01-09 23:14:42,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:42,976 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2022-01-09 23:14:42,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:14:42,976 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2022-01-09 23:14:42,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-09 23:14:42,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:42,977 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] [2022-01-09 23:14:42,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-01-09 23:14:43,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-09 23:14:43,191 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:43,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:43,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1249277894, now seen corresponding path program 7 times [2022-01-09 23:14:43,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:43,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862687227] [2022-01-09 23:14:43,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:43,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:43,198 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:43,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278035093] [2022-01-09 23:14:43,198 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-09 23:14:43,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:43,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:43,199 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:14:43,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-09 23:14:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:14:43,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 80 conjunts are in the unsatisfiable core [2022-01-09 23:14:43,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:43,372 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 23:14:43,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:43,442 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 34 treesize of output 33 [2022-01-09 23:14:43,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:43,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:43,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:43,614 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-09 23:14:43,614 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 37 treesize of output 39 [2022-01-09 23:14:43,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:43,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:43,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:43,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:43,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:43,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:43,702 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-09 23:14:43,702 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2022-01-09 23:14:44,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:44,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:44,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:44,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:44,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:44,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:44,465 INFO L353 Elim1Store]: treesize reduction 340, result has 33.3 percent of original size [2022-01-09 23:14:44,465 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 72 treesize of output 198 [2022-01-09 23:14:45,047 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:14:45,098 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:14:45,201 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:14:53,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:53,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:53,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:53,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:53,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:53,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:53,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:53,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:53,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:53,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:53,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:53,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:53,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:53,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:53,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:53,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:53,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:53,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:53,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:14:53,883 INFO L353 Elim1Store]: treesize reduction 63, result has 70.1 percent of original size [2022-01-09 23:14:53,883 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 225 treesize of output 221 [2022-01-09 23:14:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:14:54,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:15:06,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:15:06,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862687227] [2022-01-09 23:15:06,297 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:15:06,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278035093] [2022-01-09 23:15:06,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278035093] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:15:06,298 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:15:06,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2022-01-09 23:15:06,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017027756] [2022-01-09 23:15:06,298 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-09 23:15:06,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-09 23:15:06,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:15:06,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-09 23:15:06,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=2213, Unknown=1, NotChecked=0, Total=2450 [2022-01-09 23:15:06,299 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 34 states, 33 states have (on average 1.393939393939394) internal successors, (46), 31 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:15:06,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:15:06,650 INFO L93 Difference]: Finished difference Result 103 states and 116 transitions. [2022-01-09 23:15:06,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-09 23:15:06,651 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.393939393939394) internal successors, (46), 31 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2022-01-09 23:15:06,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:15:06,652 INFO L225 Difference]: With dead ends: 103 [2022-01-09 23:15:06,652 INFO L226 Difference]: Without dead ends: 99 [2022-01-09 23:15:06,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=251, Invalid=2400, Unknown=1, NotChecked=0, Total=2652 [2022-01-09 23:15:06,653 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 29 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 264 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-09 23:15:06,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 297 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 211 Invalid, 0 Unknown, 264 Unchecked, 0.2s Time] [2022-01-09 23:15:06,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-01-09 23:15:06,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2022-01-09 23:15:06,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 83 states have (on average 1.1566265060240963) internal successors, (96), 83 states have internal predecessors, (96), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-09 23:15:06,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2022-01-09 23:15:06,663 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 55 [2022-01-09 23:15:06,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:15:06,663 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2022-01-09 23:15:06,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.393939393939394) internal successors, (46), 31 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:15:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2022-01-09 23:15:06,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-09 23:15:06,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:15:06,664 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2022-01-09 23:15:06,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-01-09 23:15:06,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-09 23:15:06,881 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:15:06,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:15:06,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1328435676, now seen corresponding path program 8 times [2022-01-09 23:15:06,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:15:06,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729280479] [2022-01-09 23:15:06,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:06,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:15:06,893 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:15:06,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1624049648] [2022-01-09 23:15:06,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 23:15:06,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:06,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:15:06,912 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:15:06,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-09 23:15:06,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-09 23:15:06,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:15:06,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-09 23:15:06,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:15:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 34 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-09 23:15:07,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:15:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 26 proven. 17 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-09 23:15:07,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:15:07,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729280479] [2022-01-09 23:15:07,212 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:15:07,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624049648] [2022-01-09 23:15:07,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624049648] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:15:07,212 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:15:07,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-01-09 23:15:07,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897197001] [2022-01-09 23:15:07,212 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:15:07,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-09 23:15:07,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:15:07,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-09 23:15:07,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-09 23:15:07,213 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:15:07,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:15:07,377 INFO L93 Difference]: Finished difference Result 201 states and 230 transitions. [2022-01-09 23:15:07,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-09 23:15:07,378 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2022-01-09 23:15:07,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:15:07,379 INFO L225 Difference]: With dead ends: 201 [2022-01-09 23:15:07,379 INFO L226 Difference]: Without dead ends: 161 [2022-01-09 23:15:07,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-01-09 23:15:07,379 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 145 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:15:07,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 102 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:15:07,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-01-09 23:15:07,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 130. [2022-01-09 23:15:07,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 115 states have (on average 1.1391304347826088) internal successors, (131), 115 states have internal predecessors, (131), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-09 23:15:07,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 145 transitions. [2022-01-09 23:15:07,391 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 145 transitions. Word has length 57 [2022-01-09 23:15:07,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:15:07,391 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 145 transitions. [2022-01-09 23:15:07,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:15:07,391 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 145 transitions. [2022-01-09 23:15:07,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-09 23:15:07,392 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:15:07,392 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2022-01-09 23:15:07,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-09 23:15:07,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-09 23:15:07,607 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:15:07,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:15:07,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1970471032, now seen corresponding path program 9 times [2022-01-09 23:15:07,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:15:07,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296454933] [2022-01-09 23:15:07,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:07,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:15:07,615 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:15:07,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496476659] [2022-01-09 23:15:07,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-09 23:15:07,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:07,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:15:07,616 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:15:07,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-09 23:15:07,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-01-09 23:15:07,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:15:07,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-09 23:15:07,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:15:07,936 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-09 23:15:07,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:15:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-09 23:15:08,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:15:08,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296454933] [2022-01-09 23:15:08,043 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:15:08,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496476659] [2022-01-09 23:15:08,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496476659] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:15:08,043 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:15:08,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-01-09 23:15:08,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468030385] [2022-01-09 23:15:08,044 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:15:08,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-09 23:15:08,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:15:08,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-09 23:15:08,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-09 23:15:08,044 INFO L87 Difference]: Start difference. First operand 130 states and 145 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:15:08,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:15:08,378 INFO L93 Difference]: Finished difference Result 204 states and 226 transitions. [2022-01-09 23:15:08,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-09 23:15:08,379 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2022-01-09 23:15:08,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:15:08,380 INFO L225 Difference]: With dead ends: 204 [2022-01-09 23:15:08,380 INFO L226 Difference]: Without dead ends: 200 [2022-01-09 23:15:08,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2022-01-09 23:15:08,381 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 66 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-09 23:15:08,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 138 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-09 23:15:08,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-01-09 23:15:08,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 159. [2022-01-09 23:15:08,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 140 states have (on average 1.1428571428571428) internal successors, (160), 140 states have internal predecessors, (160), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-09 23:15:08,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 178 transitions. [2022-01-09 23:15:08,394 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 178 transitions. Word has length 57 [2022-01-09 23:15:08,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:15:08,395 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 178 transitions. [2022-01-09 23:15:08,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:15:08,395 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 178 transitions. [2022-01-09 23:15:08,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-09 23:15:08,395 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:15:08,395 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:15:08,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-09 23:15:08,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-09 23:15:08,598 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:15:08,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:15:08,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1705219253, now seen corresponding path program 10 times [2022-01-09 23:15:08,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:15:08,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65248538] [2022-01-09 23:15:08,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:08,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:15:08,605 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:15:08,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813054168] [2022-01-09 23:15:08,605 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-09 23:15:08,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:08,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:15:08,611 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:15:08,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-09 23:15:08,657 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-09 23:15:08,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:15:08,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-09 23:15:08,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:15:08,794 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 58 proven. 17 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-09 23:15:08,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:15:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 50 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-09 23:15:08,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:15:08,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65248538] [2022-01-09 23:15:08,901 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:15:08,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813054168] [2022-01-09 23:15:08,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813054168] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:15:08,901 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:15:08,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-01-09 23:15:08,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140050394] [2022-01-09 23:15:08,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:15:08,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-09 23:15:08,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:15:08,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-09 23:15:08,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-09 23:15:08,902 INFO L87 Difference]: Start difference. First operand 159 states and 178 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:15:09,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:15:09,094 INFO L93 Difference]: Finished difference Result 207 states and 225 transitions. [2022-01-09 23:15:09,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-09 23:15:09,094 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2022-01-09 23:15:09,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:15:09,095 INFO L225 Difference]: With dead ends: 207 [2022-01-09 23:15:09,095 INFO L226 Difference]: Without dead ends: 160 [2022-01-09 23:15:09,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2022-01-09 23:15:09,096 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 69 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:15:09,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 136 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:15:09,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-01-09 23:15:09,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 147. [2022-01-09 23:15:09,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 132 states have (on average 1.121212121212121) internal successors, (148), 132 states have internal predecessors, (148), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-09 23:15:09,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 162 transitions. [2022-01-09 23:15:09,108 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 162 transitions. Word has length 62 [2022-01-09 23:15:09,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:15:09,109 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 162 transitions. [2022-01-09 23:15:09,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:15:09,109 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 162 transitions. [2022-01-09 23:15:09,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-09 23:15:09,109 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:15:09,109 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:15:09,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-09 23:15:09,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-09 23:15:09,327 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:15:09,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:15:09,327 INFO L85 PathProgramCache]: Analyzing trace with hash 15885836, now seen corresponding path program 11 times [2022-01-09 23:15:09,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:15:09,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399469648] [2022-01-09 23:15:09,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:09,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:15:09,343 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:15:09,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813172393] [2022-01-09 23:15:09,343 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-09 23:15:09,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:09,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:15:09,350 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:15:09,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-09 23:15:09,415 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-01-09 23:15:09,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:15:09,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-09 23:15:09,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:15:09,524 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 56 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-09 23:15:09,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:15:09,632 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-09 23:15:09,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:15:09,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399469648] [2022-01-09 23:15:09,632 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:15:09,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813172393] [2022-01-09 23:15:09,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813172393] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:15:09,632 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:15:09,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-01-09 23:15:09,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521703946] [2022-01-09 23:15:09,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:15:09,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-09 23:15:09,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:15:09,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-09 23:15:09,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-01-09 23:15:09,633 INFO L87 Difference]: Start difference. First operand 147 states and 162 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:15:09,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:15:09,817 INFO L93 Difference]: Finished difference Result 189 states and 204 transitions. [2022-01-09 23:15:09,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-09 23:15:09,818 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2022-01-09 23:15:09,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:15:09,818 INFO L225 Difference]: With dead ends: 189 [2022-01-09 23:15:09,819 INFO L226 Difference]: Without dead ends: 133 [2022-01-09 23:15:09,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-01-09 23:15:09,819 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 101 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:15:09,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 99 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:15:09,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-01-09 23:15:09,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 124. [2022-01-09 23:15:09,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 109 states have (on average 1.1009174311926606) internal successors, (120), 109 states have internal predecessors, (120), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-09 23:15:09,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2022-01-09 23:15:09,829 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 62 [2022-01-09 23:15:09,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:15:09,829 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2022-01-09 23:15:09,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:15:09,830 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2022-01-09 23:15:09,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-09 23:15:09,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:15:09,832 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:15:09,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-09 23:15:10,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-09 23:15:10,048 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:15:10,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:15:10,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1511383042, now seen corresponding path program 1 times [2022-01-09 23:15:10,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:15:10,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659946522] [2022-01-09 23:15:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:10,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:15:10,058 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:15:10,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855926429] [2022-01-09 23:15:10,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:15:10,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:15:10,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:15:10,061 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:15:10,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-09 23:15:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:15:10,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 100 conjunts are in the unsatisfiable core [2022-01-09 23:15:10,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:15:10,484 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 23:15:10,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:10,575 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 38 treesize of output 37 [2022-01-09 23:15:10,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:10,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:10,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:10,768 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-09 23:15:10,768 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 37 treesize of output 39 [2022-01-09 23:15:10,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:10,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:10,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:10,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:10,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:10,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:10,868 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-09 23:15:10,868 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2022-01-09 23:15:11,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:11,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:11,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:11,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:11,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:11,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:11,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:11,597 INFO L353 Elim1Store]: treesize reduction 383, result has 29.1 percent of original size [2022-01-09 23:15:11,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 78 treesize of output 187 [2022-01-09 23:15:12,525 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:12,555 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:12,636 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:12,872 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:23,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:23,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:23,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:23,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:23,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:23,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:23,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:23,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:23,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:23,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:23,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:23,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:23,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:23,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:23,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:23,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:23,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:23,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:24,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:24,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:15:25,778 INFO L353 Elim1Store]: treesize reduction 1166, result has 24.2 percent of original size [2022-01-09 23:15:25,779 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 37 case distinctions, treesize of input 197 treesize of output 432 [2022-01-09 23:15:36,904 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:37,171 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:37,414 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:37,532 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:37,665 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:38,020 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:38,375 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:38,791 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:38,846 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:39,009 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:43,703 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:44,016 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:44,364 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:44,509 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:44,586 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:44,922 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:45,290 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:45,772 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-01-09 23:15:45,891 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful